WORKING MACHINE

Description

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of priority to Japanese Patent Application No. 2024-221934 filed on Dec. 18, 2024, to Japanese Patent Application No. 2024-221933 filed on Dec. 18, 2024, and to Japanese Patent Application No. 2024-221935 filed on Dec. 18, 2024. The entire contents of these applications are hereby incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to working machines such as backhoes.

2. Description of the Related Art

A working machine disclosed in Japanese Unexamined Patent Application Publication No. 2021-4491 is known. The working machine disclosed in Japanese Unexamined Patent Application Publication No. 2021-4491 includes a machine body, an operator's seat provided on the machine body, a cabin that is an operator's seat protector to protect the operator's seat, a support body (support member) to support a rear portion of the cabin, and a weight provided at a rear portion of the machine body. The support body includes a placement portion (upper plate) for placement of the rear portion of the cabin thereon, and a front leg portion (a first front leg, a second front leg) extending diagonally forward and downward from the placement portion.

SUMMARY OF THE INVENTION

Since the working machine disclosed in Japanese Unexamined Patent Application Publication No. 2021-4491 includes the support body to support the rear portion of the cabin and the weight which are independent and separate from each other and requires a rear leg portion (a first rear leg, a second rear leg) to support the rear portion of the support body, the parts count is large and the total weight is heavy. One way to address this would be to cause the weight to support the rear portion of the cabin to cause the weight to function also as the rear leg portion, but, in such a case, when detaching the weight for maintenance or the like, it would be necessary to also detach the cabin, resulting in increased time and effort.

Example embodiments of the present invention make it possible to, in working machines in each of which the weight supports the rear portion of the support body supporting the rear portion of the operator's seat protector, allow the weight to be easily attached and detached.

A working machine according to an example embodiment of the present invention includes a machine body, an operator's seat provided on the machine body, an operator's seat protector to protect the operator's seat, a support body to support the operator's seat protector, the support body including a placement portion for placement of the operator's seat protector thereon, and a front leg portion extending diagonally forward and downward from the placement portion and attached to the machine body, a weight provided at a rear portion of the machine body, and a connector member to connect an upper portion of the weight and the support body, wherein the weight is configured to support a portion of the support body.

The working machine may be configured such that a disconnection between the weight and the connector member allows the weight to be detached from the machine body with the operator's seat protector placed on the placement portion and the support body attached to the machine body.

The working machine may further include a base plate on which a prime mover is provided, and a rear hood to cover a rear of the prime mover. The weight may include a first section fixed to the base plate, and a second section provided above the first section to have the rear hood attached thereto. The connector member may connect the second section and the support body.

The second section may include a left section extending upward from a left portion of the first section, a right section extending upward from a right portion of the first section, and an upper section connecting an upper end of the left section and an upper end of the right section. The connector member may connect the upper section and the support body.

The weight may include an opening surrounded by the first section, the left section, the right section, and the upper section. The rear hood may be attached to cover the opening from behind.

The connector member may include a first connector portion to be connected to the weight. The first connector portion may be configured to allow adjustment of a position of the weight relative to the connector member.

The connector member may include a second connector portion to be connected to the support body. The second connector portion may be configured to allow adjustment of a position of the connector member relative to the support body.

The first connector portion and the weight may be connected by at least one first bolt extending in an up-down direction. The second connector portion and the support body may be connected by at least one second bolt extending in a front-rear direction. The first connector portion may be configured to allow adjustment of a position of the at least one first bolt fixed to the weight relative to the connector member. The second connector portion may be configured to allow adjustment of the position of the connector member relative to the at least one second bolt fixed to the support body.

The working machine may further include a prime mover, a cooling fan to cool the prime mover, and a fan shroud provided around the cooling fan. The fan shroud may include a side surface facing a front surface of the weight. A gap between the side surface of the fan shroud and the front surface of the weight may be filled with a sealing material.

The operator's seat protector may be a cabin. The working machine may further include a condenser for an air conditioner to adjust a temperature in the cabin. The condenser may be provided at a periphery of the cabin and on an upper surface of the connector member.

The working machine may further include a prime mover provided on the machine body, and a condenser cover to cover at least a portion of the condenser and at least a portion of the upper surface of the connector member.

The connector member may be located rearward of the cabin. The condenser may be located rearward of the cabin and on the upper surface of the connector member.

The working machine may further include a condenser cover to cover a rear of the condenser. The condenser cover may cover at least an entire dimension of the upper surface of the connector member in a machine body width direction.

The condenser cover may include a lower end located rearward of the upper surface of the connector member and lower than the upper surface of the connector member.

The condenser cover may include a cover main body to cover at least a portion of the condenser, and a projecting portion projecting horizontally from a lower portion of the cover main body to cover at least a portion of the connector member.

The projecting portion may include a fixation portion to be fixed to the connector member.

The working machine may further include a prime mover provided on the machine body, a base plate on which the prime mover is provided, a rear hood to cover a rear of the prime mover, and a rear support member including a first member fixed to the base plate to have the rear hood attached thereto, and the connector member that is a second member fixed to an upper portion of the first member. The condenser may be placed on an upper surface of the second member.

The working machine may further include a prime mover provided on the machine body, and a rear hood to cover a rear of the prime mover. A dimension of the condenser cover in the machine body width direction may be greater than a dimension of the rear hood in the machine body width direction.

The working machine may further include a condenser cover to cover a rear of the condenser. The condenser cover may include a lower end positioned lower than the second member, to cover a rear of the second member.

The working machine may further include a front support member provided forward of the rear support member and connected to the rear support member. The first member may be connected to the front support member via the second member.

The above and other elements, features, steps, characteristics and advantages of the present invention will become more apparent from the following detailed description of the example embodiments with reference to the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete appreciation of example embodiments of the present invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings described below.

FIG. 1 is a left side view of a working machine.

FIG. 2 is a right side view of a working machine.

FIG. 3 is a schematic front view of a working machine.

FIG. 4 is a schematic back view of a working machine.

FIG. 5 is a schematic plan view of a working machine.

FIG. 6 is a perspective view of a working machine seen from the rear left.

FIG. 7 is a plan view schematically illustrating an arrangement of elements of a working machine.

FIG. 8 is a front perspective view illustrating a base plate and a support member.

FIG. 9 is a side view illustrating a base plate, a cabin, and a support member.

FIG. 10 is a rear perspective view illustrating a base plate and a support member.

FIG. 11 illustrates a support member (front support member, rear support member).

FIG. 12 is a rear perspective view of a first member (weight).

FIG. 13 is a front perspective view of a first member (weight).

FIG. 14 illustrates a structure to fix a first member (weight) to a base plate.

FIG. 15 is a front perspective view illustrating a base plate and a rear support member.

FIG. 16 illustrates a structure in which a second member (connector member) connects a first member and a front support member.

FIG. 17 illustrates a support member configured such that a second member (connector member) connects a first member and a front support member.

FIG. 18 illustrates a fan shroud and a cooling fan seen from the rear right.

FIG. 19 is a side cross-sectional view illustrating a fan shroud, a first member, and a first sealing material.

FIG. 20 illustrates an engine, a cooling fan, a fan shroud, and a first sealing material seen from the rear.

FIG. 21 illustrates a fan shroud, a first member, and a first sealing material seen from the front left.

FIG. 22 is a rear perspective view illustrating a condenser unit placed on an upper surface of a second member at a position rearward of a cabin.

FIG. 23 is a side cross-sectional view illustrating a condenser unit, a condenser cover, a rear support member and the like.

FIG. 24 is a rear perspective view illustrating a support frame to support a condenser main body, and the like.

FIG. 25 is a side view of a base plate and a support member (front support member, rear support member).

FIG. 26 is a rear perspective view illustrating a state in which a condenser cover covers a condenser unit at a position rearward of a cabin.

FIG. 27 is a rear perspective view illustrating a condenser cover placed on an upper surface of a rear support member.

FIG. 28 is a rear perspective view illustrating a base plate, a support member, and a condenser cover.

FIG. 29 is a rear perspective view of a condenser cover.

FIG. 30 is a front perspective view of a condenser cover.

DETAILED DESCRIPTION OF THE EXAMPLE EMBODIMENTS

Example embodiments will now be described with reference to the accompanying drawings, wherein like reference numerals designate corresponding or identical elements throughout the various drawings. The drawings are to be viewed in an orientation in which the reference numerals are viewed correctly.

The following discusses example embodiments of the present invention with reference to drawings as appropriate. In the present example embodiment, a backhoe, which is a swiveling working machine, is illustrated as an example of a working machine 1. However, the working machine 1 is not limited to the backhoe.

FIG. 1 is a left side view of the working machine 1. FIG. 2 is a right side view of the working machine 1. FIG. 3 is a front view schematically illustrating the working machine 1. FIG. 4 is a back view schematically illustrating the working machine 1. FIG. 5 is a plan view schematically illustrating the working machine 1. FIG. 6 is a perspective view of the working machine seen from the rear left.

As shown in FIGS. 1 and 2, the working machine 1 includes a machine body (swivel base) 2, a traveling device 3, and a working device 4. In FIGS. 3 to 6, the working device 4 is not shown. The machine body 2 has provided thereon an operator's seat 7 in which an operator (driver) sits, and a cabin 8 that is an operator's seat protector to protect the operator's seat 7.

In the following description, the direction (indicated by arrow A1) forward with respect to the operator sitting in the operator's seat 7 of the working machine 1 is referred to as a forward direction, and the direction (indicated by arrow A2) rearward with respect to the operator is referred to as a rearward direction. The direction (indicated by arrow B1) leftward with respect to the operator is referred to as a leftward direction, and the direction (indicated by arrow B2) rightward with respect to the operator is referred to as a rightward direction. A horizontal direction (left-right direction) perpendicular to a front-rear direction K1 is referred to as a machine body width direction K2.

The traveling device 3 is a crawler traveling device to support the machine body 2 such that the machine body 2 is allowed to travel. The traveling device 3 includes a left traveling device 3L to support a lower left portion of the machine body 2, and a right traveling device 3R to support a lower right portion of the machine body 2. The traveling device 3 is a crawler traveling device 3 in the present example embodiment, but this does not imply any limitation. The traveling device 3 may be a wheeled traveling device. A dozer device 9 is attached to a front portion of the traveling device 3.

As shown in FIG. 1, the machine body 2 is supported on the traveling device 3 via a swivel (slewing) bearing 10 to be swivelable about a swivel axis X1 which is an axis extending in the up-down direction. As shown in FIGS. 3 to 5, the cabin 8 is provided at a front-left position of the machine body 2.

The cabin 8 includes a roof 11 to cover the space above the operator's seat 7, front pillars 12 to support the front portion of the roof 11, and rear pillars 13 to support the rear portion of the roof 11. The front pillars 12 include a left-front pillar 12L provided leftward and forward of the operator's seat 7, and a right-front pillar 12R provided rightward and forward of the operator's seat 7. The rear pillars 13 include a left-rear pillar 13L provided leftward and rearward of the operator's seat 7, and a right-rear pillar 13R provided rightward and rearward of the operator's seat 7.

The cabin 8 includes a front panel including a front window 8a, at the front portion thereof. The cabin 8 includes a rear panel including a rear window 8b, at the rear portion thereof. The cabin 8 includes a door panel including a left side window 8c, at the left side thereof. The cabin 8 includes a side panel including a right side window 8d, at the right side thereof. Each of the windows includes a material transparent to light (glass and/or the like).

The machine body 2 is provided, at the front portion thereof, with a support bracket 14 and a swing bracket 15 to support the working device 4. The support bracket 14 projects forward from the machine body 2. The swing bracket 15 is attached at a front portion of the support bracket 14 to be swingable about a vertical axis (axis extending in the up-down direction).

As shown in FIGS. 1 and 2, the working device 4 is attached to a front portion of the machine body 2. The working device 4 includes a boom 16, an arm 17, and a bucket 18. A proximal portion of the boom 16 is pivotally supported at an upper portion of the swing bracket 15 to be rotatable about a horizontal axis (axis extending in the machine body width direction K2). The arm 17 is pivotally supported at a distal end portion of the boom 16 to be rotatable about a horizontal axis. The bucket 18 is provided at a distal end portion of the arm 17 such that the bucket 18 is allowed to perform shoveling and dumping.

The working device 4 is configured to have attached thereto, instead of or in addition to the bucket 18, any of working tools (hydraulic attachments) to be driven by hydraulic actuator(s). Examples of the other working tools include hydraulic breakers, hydraulic crushers, angle brooms, earth augers, pallet forks, sweepers, mowers, and snow blowers.

The swing bracket 15 is swingable by the extension or retraction of a swing cylinder C1. The boom 16 is swingable by the extension or retraction of a boom cylinder C2. The arm 17 is swingable by the extension or retraction of an arm cylinder C3. The bucket 18 is configured to perform shoveling and dumping by the extension and retraction of a bucket cylinder C4. The swing cylinder C1, the boom cylinder C2, the arm cylinder C3, and the bucket cylinder C4 each include a hydraulic cylinder (hydraulic actuator).

As shown in FIGS. 1 and 7, the machine body 2 has a prime mover 20 provided at the rear portion thereof. The prime mover 20 is provided in a prime mover room 21 provided at the rear portion of the machine body 2. The prime mover 20 includes a diesel engine. Note that the prime mover 20 may include a gasoline engine, an electric motor, or a hybrid of an engine and an electric motor. A cooling fan 22 is attached at a right portion of the prime mover 20. The cooling fan 22 is driven by the prime mover 20 to generate a cooling air flow flowing from the outside of the machine body 2 to the prime mover 20. Specifically, the cooling fan 22 is a suction fan to suck air (outside air) from the right side of the machine body 2 and cause the air to flow to the prime mover 20.

A radiator 23, an oil cooler 24, and a reserve tank 29 are provided at the right side of the cooling fan 22. The radiator 23 is a cooler to cool a coolant to cool the prime mover 20. The oil cooler 24 is a cooler to cool returned hydraulic fluid returned from the hydraulic actuator(s) such as hydraulic cylinder(s) and/or hydraulic motor(s). Such coolers are cooled by cooling air flow sucked by the cooling fan 22. The reserve tank 29 reserves an extra supply of coolant for the radiator 23.

The machine body 2 includes a swivel frame 25 (see FIG. 8) to define a framework of the machine body 2. The swivel frame 25 includes a base plate (swivel base plate) 26 defining a bottom portion of the machine body 2, and vertical ribs (left vertical rib 27L, right vertical rib 27R) provided upright on the base plate 26 to extend in or substantially in the front-rear direction. The base plate 26 includes a thick steel sheet or the like. The base plate 26 is supported on the traveling device 3 via the swivel bearing 10 (see FIG. 1) to be rotatable about the swivel axis X1.

The swivel frame 25 includes the support bracket 14 and a partition plate 28. The support bracket 14 is provided at a front portion of the base plate 26. The swing bracket 15 is attached to the support bracket 14, and the proximal end of the working device 4 (boom 16) is attached to the swing bracket 15 (see FIGS. 1 and 2). The partition plate 28 is connected to rear portions of the vertical ribs 27 and extends in the machine body width direction. The partition plate 28 separates a lower portion of the prime mover room 21 from a space in front of the prime mover room 21. The plate surfaces of the partition plate 28 face forward and rearward, and the partition plate 28 is provided at a rear portion of the base plate 26 such that the partition plate 28 extends from one of opposite sides (left side) of the rear portion to the other of the opposite sides (right side) in the machine body width direction.

As shown in FIGS. 1, 2, 4, and 6, the working machine 1 includes a hood 30 provided at a rear portion of the machine body 2. The hood 30 covers the prime mover room 21 (see FIGS. 1 and 7) in which the prime mover 20 is provided. The hood 30 includes a rear hood 31, a left side hood 32, and a right side hood 33. The rear hood 31 covers the rear of the prime mover room 21. The left side hood 32 covers the left side of the prime mover room 21. The right side hood 33 covers the right side of the prime mover room 21. The right side hood 33 includes an opening 33a to allow outside air to enter the prime mover room 21. The opening 33a is provided with a mesh plate.

As shown in FIGS. 1, 2, 4, and the like, the rear hood 31 is provided rearward of the cabin 8. The rear hood 31 is provided rearward and downward of the rear window 8b of the cabin 8. The rear hood 31 covers the rear of the prime mover room 21, but does not cover the space above the prime mover room 21.

As shown in FIG. 9, a support member 40 to support the cabin 8 is provided at an upper portion of the base plate 26. As shown in FIGS. 8 to 10, the support member 40 includes a front support member 41 and a rear support member 45. The front support member 41 is a support body to support the rear portion of the cabin 8. The front support member 41 is provided forward of the rear support member 45 and connected to the rear support member 45. The rear support member 45 is connected to the front support member 41 and supports the rear portion of the cabin 8.

As shown in FIGS. 8 and 11, the front support member (support body) 41 includes a placement portion 42 for placement of the rear portion of the cabin 8 thereon, and a front leg portion 43 extending diagonally forward and downward from the placement portion 42 and attached to the machine body 2. The placement portion 42 is in the form of a plate, and extends in the machine body width direction. The rear portion of the cabin 8 is placed on the upper surface of the placement portion 42 via a mount member 35 including a rubber vibration isolator (see FIG. 23).

As shown in FIG. 8, the front leg portion 43 includes a left-front leg portion 43L and a right-front leg portion 43R. The left-front leg portion 43L extends diagonally forward and downward from a left portion of the placement portion 42. The right-front leg portion 43R extends diagonally forward and downward from a right portion of the placement portion 42. A lower portion of the front leg portion 43 is fixed to support plate(s) 28a provided at an upper portion of the partition plate 28. A partition wall 44 is provided between the left-front leg portion 43L and the right-front leg portion 43R. The partition wall 44, at a position above the partition plate 28, separates an upper portion of the prime mover room 21 from the space in front of the prime mover room 21.

As shown in FIG. 9, the rear support member 45 is provided rearward of the cabin 8. The rear support member 45 includes a first member 46 and a second member 47. The first member 46 is fixed to the rear portion of the base plate 26. The second member 47 is fixed to an upper portion of the first member 46.

The first member 46 is a weight (counterweight) to keep the balance in weight with the working device 4 along the front-rear direction of the machine body 2. The first member 46 is also referred to as a weight 46 in the following description. As shown in FIGS. 12 and 13, the first member (weight) 46 includes a first section 46a and a second section 46b.

The first section 46a is positioned at a lower portion of the first member 46. The first section 46a is hereinafter also referred to as a lower section 46a. The first section (lower section) 46a is fixed to the base plate 26 and extends in the machine body width direction. The second section 46b is positioned above the first section 46a. The second section 46b includes a left section 46b1, a right section 46b2, and an upper section 46b3. The left section 46b1 extends upward from a left portion of the lower section 46a. The right section 46b2 extends upward from a right portion of the lower section 46a. The upper section 46b3 extends in the machine body width direction to connect the upper end of the left section 46b1 and the upper end of the right section 46b2.

The rear hood 31 (see FIGS. 4 and 6) is attached to the first member 46. As shown in FIGS. 12 and 13, the first member 46 includes an opening 46d surrounded by the first section (lower section) 46a, the left section 46b1, the right section 46b2, and the upper section 46b3. The opening 46d is in the form of or substantially in the form of a rectangle in a rear view thereof. The rear hood 31 is attached to cover the opening 46d from behind.

A left portion of the rear hood 31 is attached to the left section 46b1 via hinge(s) (not shown). The rear hood 31 is configured to swing open rearward about the hinge. By opening the rear hood 31, it is possible to access the interior of the prime mover room 21 from behind via the opening 46d.

The left side hood 32 covers the rear of the left section 46b1. The right side hood 33 covers the rear of the right section 46b2. A condenser cover 70 (described later) covers the rear of the upper section 46b3. Therefore, the first member 46 is exposed and visible from the outside only at the lower section 46a thereof (see FIG. 4).

As shown in FIG. 12, the first member 46 includes attachment portion(s) 46c to attach thereto the left side hood 32. The attachment portions 46c are provided at an upper-right portion of the left section 46b1 of the second section 46b and a left portion of the upper surface of the first section 46a. The right section 46b2 of the second section 46b includes an attachment portion 46k to attach a fan cover 36 thereto. The fan cover 36 is provided rearward of the cooling fan 22 (see FIGS. 7 and 21). With this, it is possible to eliminate or reduce the likelihood that a hand will touch the cooling fan 22 during maintenance or the like.

As shown in FIG. 2, a front end of the first member (weight) 46 is positioned rearward of the roof 11 of the cabin 8. In FIG. 2, an imaginary line L1 indicates the position of the front end of the first member 46 along the front-rear direction, and an imaginary line L2 indicates the position of the rear end of the roof 11 along the front-rear direction. The front end of the first member 46 is positioned rearward of the operator's seat 7.

Thus, the front end of the weight, which is the first member 46, is positioned closer to the rear of the machine body 2 than to the front of the machine body 2. The dimension of the first member 46 in the front-rear direction is less than the dimension in the front-rear direction of a weight attached to a known working machine (backhoe). With this, it is possible to move the position of the center of gravity of the machine body 2 rearward, making it possible to keep the balance in the center of gravity along the front-rear direction even if the weight, i.e., the first member 46, is more lightweight than the known one. This makes it possible to make the entire working machine 1 lightweight.

Furthermore, even if the height of the weight, which is the first member 46, is higher than that of the weight of the known working machine, it is possible to eliminate or reduce the likelihood that the weight balance will decrease. Furthermore, since it is possible to increase the distance from the swivel axis X1 of the machine body 2 to the first member (weight) 46, it is possible to improve stability when the machine body 2 swivels.

As shown in FIGS. 12 and 13, the first section 46a includes fixing portion(s) 46e to be fixed to the base plate 26. As shown in FIG. 14, the base plate 26 includes a rear base 26a extending in the machine body width direction at an upper face of a rear portion of the base plate 26. The rear base 26a includes fixed portion(s) 26b to which the first member (weight) 46 is fixed. Bolt(s) BL is/are inserted through through-hole(s) 46f in the fixing portion(s) 46e and the bolt(s) BL is/are screwed into screw hole(s) in the fixed portion(s) 26b, so that the first member 46 is fixed to the rear base 26a of the base plate 26. Each fixing portion 46e is fixed to the corresponding fixed portion 26b of the rear base 26a from behind. With this, the position of the first member 46 relative to the base plate 26 in the front-rear direction is fixed.

As shown in FIGS. 13 and 15, the first section 46a includes placement portion(s) 46g to be placed on the rear base 26a of the base plate 26. Each placement portion 46g is placed onto the rear base 26a of the base plate 26 from above. With this, the position of the first member 46 relative to the base plate 26 in the up-down direction is fixed.

Since the position of the first member 46 relative to the base plate 26 in the front-rear direction and the up-down direction is fixed as described above, it possible to, when the position of the second member 47 relative to the first member 46 is adjusted as described later, adjust the position of the second member 47 relative to the base plate 26.

As shown in FIGS. 16 and 17, the second member 47 is a connector member to connect the upper portion of the first member (weight) 46 and the front support member (support body) 41. Specifically, the second member (connector member) 47 connects the second section 46b of the first member 46 and the front support member 41. More specifically, the second member 47 connects the upper section 46b3 of the second section 46b and the front support member 41. Specifically, the second member 47 connects the upper section 46b3 of the second section 46b and the placement portion 42 of the front support member 41.

The following discusses the position and the configuration of the second member (connector member) 47, and the structure in which the second member 47 connects the first member (weight) 46 and the front support member 41.

As shown in FIGS. 16 and 17, the second member 47 is placed on and fixed to the upper portion of the first member 46. Specifically, the second member 47 is placed on and fixed to the upper surface of the upper section 46b3 of the first member 46.

As shown in FIG. 17, the second member 47 includes a flat plate portion 47a and a vertical plate portion 47b. The second member 47 is, in a side view, in an L shape defined by the flat plate portion 47a and the vertical plate portion 47b. The flat plate portion 47a extends in the machine body width direction to cover the upper surface of the upper section 46b3 of the first member 46. The vertical plate portion 47b extends upward from the front edge of the flat plate portion 47a. The vertical plate portion 47b extends along the front edge of the flat plate portion 47a in the machine body with direction.

As shown in FIG. 16, the second member 47 includes first connector portion(s) 47c connected to the first member (weight) 46. Each first connector portions 47c includes a first through-hole 47d penetrating the flat plate portion 47a in the up-down direction. A plurality of (two) such through-holes 47d are provided in each of the left and right portions of the flat plate portion 47a.

First brackets 48 are fixed to the second member 47. The first brackets 48 are fixed to the left portion and the right portion of the second member 47. Each of the first brackets 48 is positioned to extend along the flat plate portion 47a and the vertical plate portion 47b. Each of the first brackets 48 includes an abutting portion 48a to abut on a rear surface of the vertical plate portion 47b, and a fixation portion 48b fixed to the upper surface of the flat plate portion 47a.

The second member 47 includes second connector portion(s) 47e connected to the front support member (support body) 41. Each second connector portion 47e includes second through-hole(s) 47f. Each second through-hole 47f penetrates the abutting portion 48a and the vertical plate portion 47b in the front-rear direction.

As shown in FIG. 12, the first member (weight) 46 includes first screw hole(s) 46h at the upper section 46b3 of the first member (weight) 46. Each first screw hole 46h extends downward from the upper surface of the upper section 46b3. Such first screw holes 46h are provided at the left portion and the right portion of the upper section 46b3.

As shown in FIG. 16, first bolts BL1 are inserted through the first through-holes 47d, and the first bolts BL1 are screwed into the screw holes 46h, so that the first member 46 and the second member 47 are connected. Thus, the first connector portions 47c of the second member (connector member) 47 and the first member (weight) 46 are connected by the first bolts BL1 extending in the up-down direction.

As shown in FIG. 12, the first member 46 includes raised portions 46i on the upper surface (upper surface of the upper section 46b3) of the first member 46. The raised portions 46i are provided at the left portion and the right portion of the upper surface of the upper section 46b3. The upper surfaces of the raised portions 46i are flat. When the first member 46 and the second member 47 are connected, the lower surface of the second member 47 abuts on the upper surfaces of the raised portions 46i.

A sealing material (not shown) is interposed between the upper surface (upper surface of the upper section 46b3) of the first member 46 and the lower surface of the second member 47. The material for the sealing material includes, for example, ethylene propylene diene monomer (EPDM) rubber. By interposing the sealing material between the upper surface (upper surface of the upper section 46b3) of the first member 46 and the lower surface of the second member 47, it is possible to close the gap between the upper surface (upper surface of the upper section 46b3) of the first member 46 and the lower surface of the second member 47.

As described above, the second member 47 functions as a connector member connecting the first member (weight) 46 and the front support member 41. Since the front support member 41 is connected to the first member 46 via the second member 47, it is possible to improve the strength (stiffness) of the front support member 41. The second member 47 also functions as a shielding plate to stop warm air in the prime mover room 21 from flowing to the outside. The second member 47 also functions as a partition plate to separate the prime mover room 21 from a condenser 60 described later.

As shown in FIG. 16, second bracket(s) 49 is/are fixed to the front support member (support body) 41. The second bracket(s) 49 is/are fixed to a lower surface of the placement portion 42 of the front support member 41. Each second bracket 49 includes an abutting portion 49a to abut on the vertical plate portion 47b. The abutting portion 49a includes third through-hole(s) 49b penetrating the abutting portion 49a in the front-rear direction. Nut(s) (not shown) is/are fixed to front surface of the abutting portions 49a at the position(s) corresponding to the third through-hole(s) 49b. The screw hole of each nut (second screw hole) extends in the front-rear direction.

As shown in FIG. 16, second bolt(s) BL2 is/are inserted through the second through-hole(s) 47f and the third through-hole(s) 49b, and the second bolt(s) BL2 is/are screwed into the screw hole(s) of the nut(s) (second screw hole(s)), so that the second member (connector member) 47 and the front support member (support body) 41 are connected. Thus, the second connector portions 47e of the second member 47 and the front support member 41 are connected by the second bolts BL2 each extending in the front-rear direction.

As described above, the first member 46 and the second member 7 are connected, and the second member 47 and the front support member 41 are connected, so that the first member (weight) 46 and the front support member (support body) 41 are connected via the second member (connector member) 47 (see FIG. 17). Furthermore, the first member (weight) 46 and the front support member (support body) 41, as a single assembly, are fixed on the base plate 26 (see FIG. 10). With this, the first member (weight) 46 and the front support member (support body) 41, as a single assembly, can support the cabin 8 on the base plate 26 (see FIG. 9). This eliminates the need for the rear legs of the cabin support frame of the known working machine (backhoe). Furthermore, the disconnection between the first member 46 and the second member 47, allows the first member 46 to be detached from the base plate 26 with the cabin 8 supported on the base plate 26 by the front support member 41.

As described above, in the working machine 1, the first member (weight) 46 and the front support member (support body) 41 are connected via the second member (connector member) 47, so that a portion of the front support member (support body) 41 is supported by the first member 46. Furthermore, the disconnection between the first member 46 and the connector member 47 allows the first member 46 to be detached from the machine body 2 with the operator's seat protector (cabin 8) placed on the placement portion 42 and the support body 41 attached to the machine body 2.

Each of the first through-holes 47d of the first connector portions 47c may be an elongated hole extending in the front-rear direction. With this, it is possible to change the positions of the first bolts BL1 relative to the first through-holes 47d in the front-rear direction. Thus, the first connector portions 47c may be configured to allow adjustment of the positions of the first bolts BL1 fixed to the first member 46 relative to the second member 47 in the front-rear direction. With this, it is possible to adjust the position of the first member 46 relative to the second member 47 in the front-rear direction.

Each of the first through-holes 47d of the first connector portions 47c may be an elongated hole extending in the left-right direction (machine body width direction). With this, it is possible to change the positions of the first bolts BL1 relative to the first through-holes 47d in the left-right direction. Thus, the first connector portions 47c may be configured to allow adjustment of the positions of the first bolts BL1 fixed to the first member 46 relative to the second member 47 in the left-right direction. With this, it is possible to adjust the position of the first member 46 relative to the second member 47 in the left-right direction.

Each of the second through-holes 47f of the second connector portions 47e may be an elongated hole extending in the up-down direction. With this, it is possible to change the positions of the second bolts BL2 relative to the second through-holes 47f in the up-down direction. Thus, the second connector portions 47e my be configured to allow adjustment of the position of the second member 47 relative to the second bolts BL2 fixed to the front support member (support body) 41 in the up-down direction. With this, it is possible to adjust the position of the second member 47 relative to the front support member 41 in the up-down direction.

Each of the second through-holes 47f of the second connector portions 47e may be an elongated hole extending in the left-right direction (machine body width direction). With this, it is possible to change the positions of the second bolts BL2 relative to the second through-holes 47f in the left-right direction. Thus, the second connector portions 47e may be configured to allow adjustment of the position of the second member 47 relative to the second bolts BL2 fixed to the front support member (support body) 41 in the left-right direction. With this, it is possible to adjust the position of the second member 47 relative to the front support member 41 in the left-right direction.

As described above, when the first member (weight) 46 and the front support member (support body) 41 are connected via the second member (connector member) 47, and the first through-holes 47d and/or the second through-holes 47f are elongated holes, it is possible to adjust the position of the first member 46 relative to the second member 47 and/or the position of the second member 47 relative to the front support member 41. With this, even if there are variations in dimensions of the first member 46 and/or the front support member 41, it is possible to assemble them while accommodating the variations.

With the above-described adjuster mechanism, the following is achieved. When assembling the first member (weight) 46, the front support member (support body) 41, and the second member (connector member) 47 to the base plate 26, it is possible to assemble them while accommodating the above-described variations in dimensions, by attaching the front support member 41, the first member 46, and the second member 47 in the order named.

Although the front support member 41 in the above description is a support body to support the rear portion of the cabin 8, the front support member 41 may be a support body to support the rear portion (rear pillars) of a canopy. That is, the front support member (support body) 41 supports the rear portion of the operator's seat protector (cabin or canopy). In the case where the operator's seat protector is a canopy, the rear pillars (right rear pillar and left rear pillar) are placed on the placement portion 42 of the front support member 41.

As shown in FIG. 7, the working machine 1 includes a fan shroud 50. As shown in FIG. 18, the fan shroud 50 is provided around the cooling fan 22. The outside surface of the fan shroud 50 includes an upper surface 50a positioned above the cooling fan 22, a lower surface 50b positioned below the cooling fan 22, a first side surface 50c positioned at one of the opposite sides of the cooling fan 22, and a second side surface 50d positioned at the other of the opposite sides of the cooling fan 22.

A sealing material 55 is provided along the outside surface of the fan shroud 50. The sealing material 55 includes a first sealing material 56 and a second sealing material 57. The first sealing material 56 is provided along the first side surface 50c. The second sealing material 57 is provided along the upper surface 50a and the second side surface 50d.

As shown in FIG. 20, the first sealing material 56 extends in the up-down direction, and its position in the left-right direction (machine body width direction K2) stays the same over the area between the upper end and an intermediate portion thereof in the up-down direction. The first sealing material 56 includes, in the area between the intermediate portion in the up-down direction and the lower end thereof, an inclined portion 56a inclined toward one of the opposite sides (right side) of the machine body along the machine body width direction with decreasing distance to the bottom thereof. Since the first sealing material 56 includes the inclined portion 56a in such a manner, the first sealing material 56 is less likely to be displaced, making it possible to eliminate or reduce the likelihood that sealing performance will decrease.

The fan shroud 50 is provided such that the first side surface 50c faces rearward, and the second side surface 50d faces forward. As shown in FIGS. 19 and 21, the first side surface 50c faces the first member (weight) 46 provided rearward of the fan shroud 50. The first sealing material 56 is provided to fill the gap between the first side surface 50c of the fan shroud 50 and a front surface (inner surface) of the first member 46. There are no other elements between the first sealing material 56 and the first member 46.

As shown in FIGS. 13 and 15, the front surface (inner surface) of the first member 46 includes a first curved portion 46j curved such that the first curved portion 46j is recessed rearward. The first curved portion 46j is provided on the front surface (inner surface) of the right section 46b2 of the first member 46. As shown in FIGS. 18 and 19, the first side surface 50c includes a second curved portion 50e facing the first curved portion 46j and curved to be convex rearward. The second curved portion 50e is curved along the path of rotation of the radially outer end of the cooling fan 22.

As shown in FIGS. 19 and 21, the first sealing material 56 is provided to fill the gap between the first curved portion 46j and the second curved portion 50e. The first sealing material 56 is curved along the first curved portion 46j and the second curved portion 50e. Note that, since the first sealing material 56 includes the inclined portion 56a, the cross section of the lower portion of the first sealing material 56 does not appear in the cross-sectional view of FIG. 19. That is, in the cross-sectional view of FIG. 19, the lower portion of the first sealing material 56 is positioned closer to the viewer of FIG. 19 than is the surface of the sheet on which FIG. 19 is printed, and therefore the cross-section of the lower portion of the first sealing material 56 does not appear in the cross-sectional view of FIG. 19.

As described above, the first sealing material 56 is positioned to fill the gap between the fan shroud 50 and the first member 46, and therefore it is not necessary to provide a separate member (sheet metal or the like) to attach the sealing material between the fan shroud 50 and the first member 46. With this, it is possible to reduce the parts count of the working machine 1.

The working machine 1 includes an air conditioner to adjust the temperature in the cabin 8. The air conditioner includes an evaporator, a blower fan, a compressor, a condenser 60, an electric fan (condenser fan) 61, a receiver 62, and the like (see FIGS. 22, 23, and the like). These elements are connected to each other by pipe(s) to allow refrigerant to flow therethrough.

The evaporator cools air to be blown into the cabin 8, by performing heat exchange between air blown from the blower fan into the cabin and the refrigerant. The compressor is a device to compress the vaporized refrigerant. The condenser 60 is a cooler (condenser) to cool the compressed refrigerant. The receiver 62 temporary stores the condensed refrigerant. The evaporator and the blower fan are provided at a lower portion of the interior of the cabin 8.

As shown in FIGS. 22 and 23, the electric fan 61, the condenser 60, and the receiver 62 of the air conditioner are provided rearward of the cabin 8. The condenser 60 is provided rearward of a lower portion of the rear window 8b of the cabin 8. The electric fan 61 is provided between the condenser 60 and the cabin 8. The receiver 62 is provided at the left side of the condenser 60.

The condenser 60 includes a condenser main body 63, and a support frame 64 to support the condenser main body 63. As shown in FIG. 24, the support frame 64 includes a support plate 65 including an opening 65a, and a frame body 66 provided around the support plate 65. The frame body 66 is positioned to surround the condenser main body 63. The condenser main body 63 is positioned to face the opening 65a of the support plate 65.

The support frame 64 includes, at the lower portion thereof, a portion of the support plate 65 at which the support frame 64 is supported on the upper surface of the rear support member 45. The support plate 65 is fixed to stay(s) 67 (see FIG. 23) via fastener(s) such as bolt(s). Each stay 67 is connected to the corresponding first bracket 48 placed on and fixed to the upper surface of the rear support member 45.

As shown in FIG. 22, the condenser 60 is placed at the periphery of the cabin 8 and on the upper surface of the support member 40. Specifically, the condenser 60 is placed rearward of the cabin 8 and in contact with the upper surface 45a of the rear support member (second member) 45. In other words, the condenser 60 is placed directly (without other elements therebetween) on the upper surface 45a of the rear support member 45. Specifically, as shown in FIG. 23, the support plate 65 to support the support frame 64 of the condenser 60 is placed on and in contact with the upper surface of the flat plate portion 47a of the second member 47 of the rear support member 45. There are no other elements (the hood 30 such as the rear hood 31) between the upper surface 45a of the rear support member 45 and the lower surface of the condenser 60.

Since the condenser 60 is placed on and in contact with the upper surface (upper surface 45a of the rear support member 45) of the support member 40 in this manner, it is possible to lower the height of the condenser 60. With this, it is possible to eliminate or reduce the likelihood that the rear field of view of the operator sitting in the operator's seat 7 will be hindered by the condenser 60 located rearward of the cabin 8.

As shown in FIGS. 17 and 25, the upper surface 45a of the rear support member 45 on which the condenser 60 is placed is provided at a position lower than the upper surface of the placement portion 42 of the front support member 41. By lowering the height of the upper surface 45a of the rear support member 45 in this manner, it is possible to lower the height of the condenser 60 placed on and in contact with the upper surface 45a of the rear support member 45.

As shown in FIG. 23, the lower end of the condenser 60 placed on and in contact with the upper surface of the rear support member 45 is positioned lower than the upper surface of the placement portion 42 of the front support member 41. Specifically, the lower end of the support plate 65 of the condenser 60 is positioned lower than the upper surface of the placement portion 42 of the front support member 41. The lower end of the condenser main body 63 is also positioned lower than the upper surface of the placement portion 42 of the front support member 41. With this, it is possible to lower the position of the upper end of the condenser 60 (i.e., the height of the condenser 60).

As shown in FIG. 23 and the like, the working machine 1 includes a condenser cover 70. The condenser cover 70 covers at least a portion of the condenser 60 and at least a portion of the upper surface of the support member 40 (rear support member 45).

As shown in FIG. 23, the condenser cover 70 covers the rear of the condenser 60. As shown in FIGS. 22 and 26, the condenser cover 70 covers the rear, the sides (left and right sides), and the space above the condenser 60. Specifically, the condenser cover 70 covers the rear, the sides (left and right sides), and the space above a condenser assembly 68 including the electric fan 61, the condenser 60, and the receiver 62. The front side and the bottom of the condenser cover 70 are open.

As shown in FIG. 27, the condenser cover 70 is placed at an upper portion of the support member 40 (rear support member 45). The condenser cover 70 is fixed to the upper surface of the second member 47 of the rear support member 45 at first fixation portion(s) 73 described later. With this, as shown in FIG. 28, the condenser cover 70 is provided above the rear support member 45 connected to the front support member 41. As shown in FIG. 26 and the like, the condenser cover 70 is provided rearward of the cabin 8.

As shown in FIG. 23, the condenser cover 70 is provided above the rear hood 31. The most portion of the condenser cover 70 is located forward of the rear hood 31. The condenser cover 70 covers the area above the prime mover room 21, in which the prime mover 20 is provided, without the hood 30 such as the rear hood 31 between the condenser cover 70 and the prime mover room 21. The area above the prime mover room 21 covered by the condenser cover 70 without the hood 30 therebetween is an area forward of an imaginary line LL in FIG. 23 (forward of the front end of the upper portion of the rear hood 31).

The condenser cover 70 covers the area above the prime mover room 21, in a manner similar to the cover member (rear cover) provided above the prime mover room at a position rearward of the cabin of a known working machine (backhoe). In other words, the condenser cover 70 covers the area above the prime mover room 21 instead of the cover member of the known working machine.

As shown in FIGS. 29 and 30, the condenser cover 70 includes a cover main body 71 and projecting portion(s) 72. The cover main body 71 covers at least a portion of the condenser 60. Specifically, the cover main body 71 covers the rear and the sides (left and right sides) of the condenser 60. More specifically, the cover main body 71 covers the rear and the sides (left and right sides) of the condenser assembly 68 including the condenser 60.

Each projecting portion 72 projects horizontally from a lower portion of the cover main body 71 to cover at least a portion of the support member 40 (second member 47 of the rear support member 45). Such projecting portions 72 project outward (leftward and rightward, respectively), along the machine body width direction, from respective lower portions of the side surfaces of the cover main body 71. The height of the projecting portions 72 is lower than the height of the cover main body 71. Specifically, the height of the projecting portions 72 is less than half the height of the cover main body 71.

The cover main body 71 includes a back plate 71a, an upper plate 71b, a left side plate 71c, and a right side plate 71d. The back plate 71a covers the rear of the condenser assembly 68. The upper plate 71b covers the space above the condenser assembly 68. The left side plate 71c covers the left of the condenser assembly 68. The right side plate 71d covers the right of the condenser assembly 68. The back plate 71a and the right side plate 71d each include a meshed opening to pass air therethrough.

The projecting portions 72 include a left projecting portion 72L and a right projecting portion 72R. The left projecting portion 72L projects leftward from the lower portion of the left side plate 71c of the cover main body 71. The right projecting portion 72R projects rightward from the lower portion of the right side plate 71d of the cover main body 71. The condenser cover 70 includes the projecting portions 72, and therefore the dimension of the condenser cover 70 in the machine body width direction is significantly greater than the dimension of the condenser assembly 68 in the machine body width direction.

As shown in FIG. 4, a dimension La of the condenser cover 70 in the machine body width direction is greater than a dimension Lb of the rear hood 31 in the machine body width direction. The dimension La of the condenser cover 70 in the machine body width direction is greater than a dimension Lc of the rear window 8b in the machine body width direction. The condenser cover 70, in terms of the position in the machine body width direction, extends over the entire rear hood 31, a portion of the left side hood 32, and a portion of the right side hood 33.

The condenser cover 70 is configured to, since it includes the projecting portions 72, widely cover the area above the prime mover room 21 along the machine body width direction. The condenser cover 70 covers the entire or substantially entire upper surface of the rear support member (second member) 45. The condenser cover 70 covers at least the entire dimension of the upper surface of the rear support member (second member) 45 in the machine body width direction. The condenser cover 70 may cover the entire dimension of the upper surface of the rear support member (second member) 45 in the front-rear direction.

With this, the condenser cover 70 functions as the cover member (rear cover) included in the foregoing known working machine (backhoe). That is, the condenser cover 70 includes the projecting portions 72, and therefore, as well as the function to cover the condenser assembly, the condenser cover 70 also has the function of the cover member of the known working machine to cover the upper surface of the rear support member. That is, the condenser cover 70 is a member in which the condenser cover, configured to cover the condenser assembly, is integral with the cover member of the known working machine. With the use of the condenser cover 70, it is possible to eliminate the need for the cover member included in the known working machine, and reduce the parts count.

As shown in FIG. 23, the lower portion of the condenser cover 70 is positioned rearward of the second member 47. A lower end 70a of the condenser cover 70 is positioned lower than the second member 47. The lower end 70a of the condenser cover 70 is positioned rearward of the upper surface of the second member 47 and lower than the upper surface of the second member 47. With this, the condenser cover 70 covers the rear of the second member 47. Furthermore, the lower end 70a of the condenser cover 70 is positioned lower than the upper surface of the first member 46. The rear end of the condenser cover 70 is positioned lower than the upper surface (upper surface of the upper section 46b3) of the first member 46. With this, it is possible to prevent or reduce water ingress through the gap between the first member 46 and the second member 47. Furthermore, it is possible to improve the outer appearance of the working machine 1 seen from behind.

As shown in FIGS. 29 and 30, the condenser cover 70 includes fixation portions (first fixation portions 73 and second fixation portions 74). The first fixation portions 73 fix the projecting portions 72 to the support member 40 (second member 47 of the rear support member 45). The first fixation portions 73 are provided on the respective projecting portions 72. The second fixation portions 74 are provided on an upper portion of the back plate 71a of the cover main body 71.

Each of the fixation portions 73 includes a first hole 73a for insertion of a bolt. The first hole 73a penetrates the corresponding one of the projecting portions 72 in the up-down direction. As shown in FIG. 27, first screw receiving portions 45b are provided on the upper surface of the rear support member 45, and bolts BLa inserted through the respective first holes 73a are screwed into the respective first screw receiving portions 45b, so that the projecting portions 72 are fixed to the rear support member 45. With this, the condenser cover 70 is fixed to the rear support member 45.

Each of the second fixation portions 74 includes a second hole 74a for insertion of a bolt. The second hole 74a penetrates the back plate 71a in the front-rear direction. As shown in FIG. 27, second screw receiving portions 64a are provided at an upper portion of the support frame 64 of the condenser 60, and bolts BLb inserted through the respective second holes 74a are screwed into the respective second screw receiving portions 64a, so that the cover main body 71 is fixed to the support frame 64. With this, the condenser cover 70 is connected to the support frame 64.

Note, however, that the method of fixing the condenser cover 70 is not limited to the above-described method. For example, the first screw receiving portions 45b may be provided on the first brackets 48. The second screw receiving portions 64a may be provided on the rear support member 45. The first fixation portions 73 or the second fixation portions 74 may be omitted.

As shown in FIGS. 1 to 3, the upper end of the condenser cover 70 is lower than the midpoint between the upper end and the lower end of the rear window 8b of the cabin 8, and located at a position lower than the upper end of a backrest of the operator's seat 7. As shown in FIG. 5, the condenser cover 70 is provided, in plan view, at a position inward of the outer edge (opposite sides in the machine body width direction) of the machine body 2.

As shown in FIG. 23, the condenser main body 63 is inclined diagonally rearward and downward. The back plate 71a of the condenser cover 70 is positioned in parallel to the rear surface of the condenser main body 63, and is inclined diagonally rearward and downward. The upper plate 71b of the condenser cover 70 is inclined diagonally downward and rearward. With this, it is possible to eliminate or reduce the likelihood that the rear field of view of the operator sitting in the operator's seat 7 will be hindered by the installation of the condenser cover 70.

Example embodiments of the present invention provide working machines 1 described in the following items. The working machines 1 described in items A1 to A13 may additionally include at least one of the features of items B1 to B9.

• • (Item A1) A working machine 1 including a machine body 2, a cabin 8 provided on the machine body 2, a condenser 60 for an air conditioner to adjust a temperature in the cabin 8, and a support member 40 to support the cabin 8, wherein the condenser 60 is provided at a periphery of the cabin 8 and on an upper surface of the support member 40.

With the working machine 1 according to item A1, since the condenser 60 is provided at a periphery of the cabin 8 and on the upper surface of the support member 40, it is possible to lower the height of the condenser 60 provided at the periphery of the cabin 8. With this, it is possible to improve the visibility around the cabin 8, in a working machine in which the condenser is provided at a periphery of the cabin.

• • (Item A2) The working machine 1 according to item A1, further including a prime mover 20 provided on the machine body 2, and a condenser cover 70 to cover at least a portion of the condenser 60 and at least a portion of the upper surface of the support member 40.

With the working machine 1 according to item A2, the condenser cover 70 functions as a cover member to cover at least a portion of the upper surface of the support member 40, and therefore it is not necessary to provide a cover member separately from the condenser cover 70. This makes it possible to omit the cover member, and reduce the parts count.

• • (Item A3) The working machine 1 according to item A1 or A2, wherein the support member 40 includes a rear support member 45 located rearward of the cabin 8, and the condenser 60 is located rearward of the cabin 8 and on an upper surface 45a of the rear support member 45.

With the working machine 1 according to item A3, since the condenser 60 is placed on the upper surface 45a of the rear support member 45 provided rearward of the cabin 8, it is possible to lower the height of the condenser 60 provided rearward of the cabin 8. With this, it is possible to improve the visibility rearward of the cabin 8, in a working machine in which the condenser is provided rearward of the cabin.

• • (Item A4) The working machine 1 according to item A3, further including a prime mover 20 provided on the machine body 2, and a condenser cover 70 to cover a rear of the condenser 60, wherein the condenser cover 70 is provided above the rear support member 45, and covers at least an entire dimension of the upper surface of the rear support member 45 in a machine body width direction.

With the working machine 1 according to item A4, since the condenser cover 70 functions as a cover member to cover at least the entire dimension of the upper surface of the rear support member 45 in the machine body width direction, it is not necessary to provide a cover member separately from the condenser cover 70. Therefore, it is possible to omit the cover member, and reduce the parts count.

• • (Item A5) The working machine according to item A4, wherein the condenser cover 70 includes a lower end 70a located rearward of the upper surface 45a of the rear support member 45 and lower than the upper surface 45a of the rear support member 45.

With the working machine 1 according to item A5, since the condenser cover 70 can hide the rear support member 45 from behind, it is possible to improve the appearance of the working machine 1 seen from behind.

• • (Item A6) The working machine according to item A2 or A4, wherein the condenser cover 70 is fixed to the support member 40.

With the working machine 1 according to item A6, since the condenser cover 70 is fixed to the support member 40, it is possible to lower the height of the condenser cover 70, and possible to eliminate or reduce the likelihood that the field of view around the cabin 8 will be hindered.

• • (Item A7) The working machine 1 according to item A2 or A4, wherein the condenser cover 70 includes a cover main body 71 to cover at least a portion of the condenser 60, and a projecting portion 72 projecting horizontally from a lower portion of the cover main body 71 to cover at least a portion of the support member 40.

With the working machine 1 according to item A5, since the condenser cover 70 includes the projecting portion(s) 72, it is possible to widely cover the area above the prime mover room 21 in the machine body width direction. Therefore, the condenser cover 70 can function as a cover member to cover the area above a rear portion of the prime mover room 21. This makes it possible to omit the cover member of a known working machine, and reduce the parts count.

• • (Item A8) The working machine 1 according to item A7, wherein the projecting portion 72 includes a fixation portion (first fixation portion 73) to be fixed to the support member 40.

With the working machine 1 according to item A8, it is possible to fix the condenser cover 70 to the support member 40 while preventing or reducing increases in the size of the cover main body 71.

• • (Item A9) The working machine 1 according to item A2 or A3, wherein the machine body 2 includes a prime mover 20 provided on the machine body 2, a base plate 26 on which the prime mover 20 is provided, and a rear hood 31 to cover a rear of the prime mover 20, the rear support member 45 includes a first member 46 fixed to the base plate 26 and configured to have the rear hood 31 attached thereto, and a second member 47 fixed to an upper portion of the first member 46, and the condenser 60 is placed on an upper surface of the second member 47.

With the working machine 1 according to item A9, since the condenser 60 is placed on the upper surface of the second member 47, it is possible to eliminate or reduce the likelihood that vibrations or impacts will be transmitted from the first member 46 contacting the base plate 26 and the hood 30 directly to the condenser 60.

• • (Item A10) The working machine 1 according to item A4 or A5, further including a prime mover 20 provided on the machine body 2, and a rear hood 31 to cover a rear of the prime mover 20, wherein a dimension of the condenser cover 70 in the machine body width direction is greater than a dimension of the rear hood 31 in the machine body width direction.

With the working machine 1 according to item A10, since the condenser cover 70 widely covers the area above the rear hood 31, it is possible to omit the cover member of the known working machine, and reduce the parts count.

• • (Item A11) The working machine 1 according to item A9, further including a condenser cover 70 to cover a rear of the condenser 60, wherein the condenser cover 70 includes a lower end 70a positioned lower than the second member 47, to cover a rear of the second member 47.

With the working machine 1 according to item A11, the condenser cover 70 prevents or reduces water ingress through the gap between the first member 46 and the second member 47.

• • (Item A12) The working machine 1 according to item A9 or A11, wherein the support member 40 includes a front support member 41 provided forward of the rear support member 45 and connected to the rear support member 45, and the first member 46 is connected to the front support member 41 via the second member 47.

With the working machine 1 according to item A12, it is possible to connect the first member 46 and the front support member 41 via the second member 47. This makes it possible for the first member 46, the front support member 41, and the second member 47 to support the rear portion of the cabin 8.

• • (Item A13) The working machine 1 according to any one of items A3 to A5 and A9to A12, wherein the support member 40 includes a front support member 41 provided forward of the rear support member 45 and connected to the rear support member 45, the front support member 41 includes a placement portion 42 for placement of a rear portion of the cabin 8 thereon, and a front leg portion 43 extending diagonally forward and downward from the placement portion 42, and an upper surface of the rear support member 45 is positioned lower than an upper surface of the placement portion 42.

With the working machine 1 according to item A13, it is possible to lower the height of the upper surface of the rear support member 45, and thus possible to lower the height of the condenser 60 placed on and in contact with the upper surface of the rear support member 45.

• • (Item B1) A working machine 1 including a machine body 2, an operator's seat 7 provided on the machine body 2, an operator's seat protector to protect the operator's seat 7, a support body 41 to support the operator's seat protector, the support body 41 including a placement portion 42 for placement of the operator's seat protector thereon, and a front leg portion 43 extending diagonally forward and downward from the placement portion 42 and attached to the machine body 2, a weight 46 provided at a rear portion of the machine body 2, and a connector member 47 to connect an upper portion of the weight 46 and the support body 41, wherein the weight 46 is configured to support a portion of the support body 41.

With the working machine 1 according to item B1, since the weight 46 supports a portion of the support body 41 to support the operator's seat protector, and the connector member 47 connects the support body 41 to support the operator's seat protector and the upper portion of the weight 46, a disconnection between the weight 46 and the connector member 47 makes it possible to easily detach the weight 46 from the machine body 2.

• • (Item B2) The working machine 1 according to item B1, wherein the working machine 1 is configured such that a disconnection between the weight 46 and the connector member 47 allows the weight 46 to be detached from the machine body 2 with the operator's seat protector placed on the placement portion 42 and the support body 41 attached to the machine body 2.

With the working machine 1 according to item B2, it is possible to detach the weight 46 from the machine body 2 with the operator's seat protector placed on the placement portion 42 and the support body 41 attached to the machine body 2, and therefore it is not necessary to also detach the operator's seat protector when detaching the weight 46 to perform maintenance, making it possible to reduce the time and effort for work.

• • (Item B3) The working machine 1 according to item B1 or B2, further including a base plate 26 on which a prime mover 20 is provided, and a rear hood 31 to cover a rear of the prime mover 20, wherein the weight 46 includes a first section 46a fixed to the base plate 26, and a second section 46b provided above the first section 46a to have the rear hood 31 attached thereto, and the connector member 47 connects the second section 46b and the support body 41.

With the working machine 1 according to item B3, the rear hood 31 can be attached to the weight 46, and therefore a separate member to attach the rear hood 31 is not needed. It is also possible, by the connector member 47, to connect the weight 46 with the rear hood 31 attached thereto and the support body 41.

• • (Item B4) The working machine 1 according to item B3, wherein the second section 46b includes a left section 46b1 extending upward from a left portion of the first section 46a, a right section 46b2 extending upward from a right portion of the first section 46a, and an upper section 46b3 connecting an upper end of the left section 46b1 and an upper end of the right section 46b2, and the connector member 47 connects the upper section 46b3 and the support body 41.

With the working machine 1 according to item B4, it is possible, by the connector member 47, to connect, to the support body 41, the second section 46b provided above and apart from the first section 46a fixed to the base plate 26. That is, it is possible, by the connector member 47, to connect the weight 46 and the support body 41 without other elements between the weight 46 and the connector member 47.

• • (Item B5) The working machine 1 according to item B4, wherein the weight 46 includes an opening 46d surrounded by the first section 46a, the left section 46b1, the right section 46b2, and the upper section 46b3, and the rear hood 31 is attached to cover the opening 46d from behind.

With the working machine 1 according to item B5, it is possible to attach the rear hood 31 to the weight 46, and therefore a separate member to attach the weight 46 to the rear hood 31 is not needed. It is also possible to, by opening the rear hood 31, access the prime mover 20 and the like in the prime mover room 21 from the opening 46d of the weight 46.

• • (Item B6) The working machine 1 according to any one of items B1 to B5, wherein the connector member 47 includes a first connector portion 47c to be connected to the weight 46, and the first connector portion 47c is configured to allow adjustment of a position of the weight 46 relative to the connector member 47.

With the working machine 1 according to item B6, it is possible to adjust the position of the weight 46 relative to the second member 47. With this, even if there are variations in dimensions of the weight 46 or the second member 47, it is possible to assemble them while accommodating the variations.

• • (Item B7) The working machine 1 according to any one of items B1 to B6, wherein the connector member 47 includes a second connector portion 47e to be connected to the support body 41, and the second connector portion 47e is configured to allow adjustment of a position of the connector member 47 relative to the support body 41.

With the working machine 1 according to item B7, it is possible to adjust the position of the second member 47 relative to the front support member 41. With this, even if there are variations in dimensions of the front support member 41 and the second member 47, it is possible to assemble them while accommodating the variations.

• • (Item B8) The working machine 1 according to item B7 taken in combination with item B6, wherein the first connector portion 47c and the weight 46 are connected by at least one first bolt BL1 extending in an up-down direction, the second connector portion 47e and the support body 41 are connected by at least one second bolt BL2 extending in a front-rear direction, the first connector portion 47c is configured to allow adjustment of a position of the at least one first bolt BL1 fixed to the weight 46 relative to the connector member 47, and the second connector portion 47e is configured to allow adjustment of the position of the connector member 47 relative to the at least one second bolt BL2 fixed to the support body 41.

With the working machine 1 according to item B8, by adjusting the positions of the first bolt(s) BL1 fixed to the weight 46 relative to the connector member 47, it is possible to adjust the position of the connector member 47 relative to the weight 46 along the front-rear direction or the machine body width direction (left-right direction). Furthermore, by adjusting the position of the connector member 47 relative to the second bolt(s) BL2 fixed to the support body 41, it is possible to adjust the position of the support body 41 relative to the connector member 47 along the up-down direction or the machine body width direction (left-right direction).

• • (Item B9) The working machine 1 according to any one of items B1 to B4, further including a prime mover 20, a cooling fan 22 to cool the prime mover 20, and a fan shroud 50 provided around the cooling fan 22, wherein the fan shroud 50 includes a side surface facing a front surface of the weight 46, and a gap between the side surface of the fan shroud 50 and the front surface of the weight 46 is filled with a sealing material (first sealing material 56).

With the working machine 1 according to item B9, the sealing material (first sealing material 56) is provided to fill the gap between the side surface of the fan shroud 50 and the front surface of the weight 46, and a separate member (metal sheet or the like) to attach the sealing material between the fan shroud 50 and the weight 46 is not needed. With this, it is possible to reduce the parts count of the working machine 1 to achieve easy and lightweight assembly.

While example embodiments of the present invention have been described above, it is to be understood that variations and modifications will be apparent to those skilled in the art without departing from the scope and spirit of the present invention. The scope of the present invention, therefore, is to be determined solely by the following claims.