VARIABLE PLATE FOR CEILING WORK

Description

CROSS REFERENCE TO RELATED APPLICATION OF THE DISCLOSURE

The present application claims the benefit of Korean Patent Application No. 10-2024-0122316 filed in the Korean Intellectual Property Office on Sep. 9, 2024, and Korean Patent Application No. 10-2024-0127601 filed in the Korean Intellectual Property Office on Sep. 20, 2024, the entire contents of which are incorporated herein by reference.

BACKGROUND OF THE DISCLOSURE

Field of the Disclosure

The present disclosure relates to a variable plate for ceiling work, more specifically to a variable plate for ceiling work that is capable of being used to provide a safe working environment for a worker moving on the ceiling of a building or construction site.

Background of the Related Art

Generally, structures for ceiling work in a building or construction site are necessary to ensure a worker's safety, and recently, various technologies for the structures for ceiling work have been developed and suggested.

First, a variable work platform is designed to allow a worker to perform ceiling work at different heights, and a new model having an automatic horizontal adjustment function and a firm safety handrail additionally provided thereto has been currently developed. Further, a fixed safety structure is permanently built on a ceiling to allow a worker to perform ceiling work stably. The fixed safety structure is generally made of steel or aluminum so that it ensures good durability and stability.

The introduction of a worker's safety detection and warning generation upgrades stability in his or her work environment. Recently, a sensor-based system has been widely utilized, and such a system monitors the position and state of the worker in real time through a pressure sensor or motion sensor. If an abnormal position or state is detected, warning is immediately generated. Further, a wearable device such as a smart helmet, which has a function similar to the sensor-based system, monitors the position and state of a wearer in real time, and if the wearer is in a risky situation, the wearable device generates warning.

These days, further, a module type structure is developed, and in this case, the module type structure is easily built and removed according to various work environments. After ceiling work has been completed, the module type structure is easily removed from the ceiling and kept in given place. Therefore, the module type structure ensures efficient work and stability, and further, the module type structure is designed to have an integrated system so that it is built together with electricity and lighting, without any additional installation process of the electricity and lighting, thereby optimizing a working space.

Recently, a technology related to a material of the ceiling work structure has been developed. In this case, the ceiling work structure is generally made of a high strength lightweight material, and further, a material such as carbon fiber reinforced plastic (CFRP) has been introduced to improve the worker's safety and the structure's efficiency. Furthermore, parts constituting the ceiling structure are customizedly made using 3D printing, thereby making it possible to design and build the structure satisfying given requirements of working spaces.

Such various technologies as mentioned above have been developed, but it is still hard to find a ceiling work structure capable of being easily built and removed on/from a ceiling, being applicable to various sites, and ensuring a worker's safety and convenient movements.

SUMMARY OF THE DISCLOSURE

Accordingly, the present disclosure has been made in view of the above-mentioned problems occurring in the related art, and it is an object of the present disclosure to provide a variable plate for ceiling work that is capable of being used to provide a safe working environment for a worker moving on the ceiling of a building or construction site.

It is another object of the present disclosure to provide a variable plate for ceiling work that is capable of being easily built and removed on/from a ceiling, being applicable to various sites, and ensuring a worker's safety and convenient movements.

To accomplish the above-mentioned objects, according to the present disclosure, there is provided a variable plate for ceiling work, including: coupling parts separably coupled to ceiling structures; and a block module part connected between the coupling parts, extendable in shape, and having support blocks adapted to support a worker or heavy object.

According to the present disclosure, desirably, each coupling part may include: a coupling part body; and ball plungers adapted to fix the coupling part body to the support blocks.

According to the present disclosure, desirably, the coupling part may further include a toggle clamp adapted to fix the coupling part body to the corresponding ceiling structure.

According to the present disclosure, desirably, the block module part may further include an extension block located between the neighboring support blocks in such a way as to be extendable in a longitudinal direction thereof.

According to the present disclosure, desirably, the extension block may include: a first fixed case fixed to one side support block of the neighboring support blocks; a second fixed case fixed to the other side support block of the neighboring support blocks; and a fixing guide located between the first fixed case and the second fixed case, and the second fixed case slides along the fixing guide in such a way as to be varied in position with respect to the first fixed case.

According to the present disclosure, desirably, the second fixed case may have a plurality of holes formed thereon, and the extension block may include escape prevention pins coupled to the holes of the second fixed case in such a way as to fix the second fixed case and the fixing guide to each other.

According to the present disclosure, desirably, the extension block may further include: sliders located between the first fixed case and the fixing guide and between the second fixed case and the fixing guide; and an escape prevention part located on the second fixed case in such a way as to fix the second fixed case, the fixed guide, and the sliders to one another.

According to the present disclosure, desirably, the block module part having the support blocks in a transverse direction thereof may further include top fasteners or underside fasteners for fixing the support blocks to one another.

According to the present disclosure, desirably, the block module part may include: a first block module having the support blocks in the transverse direction thereof and the top fasteners or underside fasteners for fixing the support blocks to one another; a second block module located close to the first block module and having the support blocks in the transverse direction thereof and the top fasteners or underside fasteners for fixing the support blocks to one another; and module fasteners for fixing the first block module and the second block module to each other.

According to the present disclosure, desirably, the coupling parts may be located on both sides of the block module part.

According to the present disclosure, desirably, each coupling part may include: a coupling part body; a first ball plunger for fixing the coupling part body and the corresponding support block to each other; and a second ball plunger for fixing the coupling part body and the corresponding ceiling structure to each other.

According to the present disclosure, desirably, the block module part may further include a sensing part detachably mounted on the end portions thereof in such a way as to detect whether the worker approaches the end portions thereof.

According to the present disclosure, desirably, the block module part may further include a lighting part located on one surface thereof.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present disclosure will be apparent from the following detailed description of the embodiments of the disclosure in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic sectional view showing a state where a variable plate for ceiling work according to the present disclosure is built;

FIGS. 2 and 3 are perspective views showing the variable plate for ceiling work of FIG. 1;

FIG. 4 is an enlarged perspective view showing a coupling part of the variable plate for ceiling work according to the present disclosure;

FIG. 5 is an enlarged perspective view showing a block module part of the variable plate for ceiling work wherein the coupling part is removed;

FIGS. 6 to 8 are side views showing operating states of the coupling part of the variable plate for ceiling work according to the present disclosure;

FIG. 9 is an enlarged perspective view showing extension blocks of the variable plate for ceiling work according to the present disclosure;

FIG. 10 is a perspective view showing an example of the extension block of the variable plate for ceiling work according to the present disclosure;

FIG. 11 is a perspective view showing another example of the extension block of the variable plate for ceiling work according to the present disclosure;

FIG. 12 includes side views showing operating states of the extension block of the variable plate for ceiling work of FIG. 11;

FIGS. 13 to 14 are perspective views showing a method for fixing support blocks of the variable plate for ceiling work according to the present disclosure;

FIG. 15 includes perspective views showing top fasteners and module fasteners of the variable plate for ceiling work according to the present disclosure;

FIG. 16 is an enlarged perspective view showing the coupling part between the support blocks of the variable plate for ceiling work according to the present disclosure;

FIGS. 17 to 18 are side views showing operating states of the coupling part of the variable plate for ceiling work of FIG. 16;

FIG. 19 is a perspective view showing a state where the variable plate for ceiling work according to the present disclosure further includes a sensing part; and

FIG. 20 is a perspective view showing a state where the variable plate for ceiling work according to the present disclosure further includes a lighting part.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Hereinafter, the present disclosure will be described with reference to the attached drawings. Before the present disclosure is described, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure, which can be embodied in various forms. Further, the corresponding parts in the embodiments of the present disclosure are indicated by corresponding reference numerals and the repeated explanation on the corresponding parts will be avoided. If it is determined that the detailed explanation on the well known technology related to the present disclosure makes the scope of the present disclosure not clear, the explanation will be avoided for the brevity of the description.

When it is said that one element is described as being “connected” or “coupled” to the other element, one element may be directly connected or coupled to the other element, but it should be understood that another element may be present between the two elements. In the description, when it is said that one portion is described as “includes” any component, one element further may include other components unless no specific description is suggested.

Terms used in this application are used to only describe specific exemplary embodiments and are not intended to restrict the present disclosure. An expression referencing a singular value additionally refers to a corresponding expression of the plural number, unless explicitly limited otherwise by the context. In this application, terms, such as “comprise”, “include”, or ‘have”, are intended to designate those characteristics, numbers, steps, operations, elements, or parts which are described in the specification, or any combination of them that exist, and it should be understood that they do not preclude the possibility of the existence or possible addition of one or more additional characteristics, numbers, steps, operations, elements, or parts, or combinations thereof.

Now, an embodiment of the present disclosure will be explained in detail with reference to the attached drawings. First, FIG. 1 is a schematic sectional view showing a state where a variable plate for ceiling work according to the present disclosure is built, and FIGS. 2 and 3 are perspective views showing the variable plate for ceiling work of FIG. 1.

As shown, a variable plate 1 for ceiling work according to the present disclosure is coupled to ceiling structures 2. In many cases, cables, pipes, ducts, etc. may be built on a ceiling of a factory or construction site, and further, various equipment or devices may be built thereon. To perform the maintenance for such parts, equipment, and devices, a worker has to have ceiling work, and therefore, a structure for such ceiling work is built on the ceiling of a building or construction site in such a way as to allow the worker to move therealong. The variable plate 1 for ceiling work according to the present disclosure can be understood as installation device that is fixedly built onto a ceiling directly or indirectly through the ceiling structures 2 to support a worker or heavy object or understood as a device having a function and shape similar to the installation device.

Referring to FIGS. 2 and 3, the variable plate 1 for ceiling work according to the present disclosure includes coupling parts 10 and a block module part 20.

The coupling parts 10 are separably coupled to the ceiling structures 2. Each coupling part 10 includes a coupling part body 11 and a toggle clamp 12, and details of the coupling part 10 will be discussed later.

The block module part 20 is connected between the coupling parts 10 and extendable in shape. The block module part 20 includes support blocks 21 adapted to support a worker or heavy object. As shown, the coupling parts 10 are located on both sides of the block module part 20. The block module part 20 further includes extension blocks 22, top fasteners 23, and underside fasteners 24, and details of the block module part 20 will be discussed later.

Next, explanations of the coupling parts 10 and the configuration around the coupling parts 10 will be given with reference to the attached drawings. FIG. 4 is an enlarged perspective view showing the coupling part of the variable plate for ceiling work according to the present disclosure, FIG. 5 is an enlarged perspective view showing the block module part of the variable plate for ceiling work wherein the coupling part is removed, and FIGS. 6 to 8B are side views showing operating states of the coupling part of the variable plate for ceiling work according to the present disclosure.

As shown, each coupling part 10 includes the coupling part body 11 and ball plungers 13 adapted to fix the coupling part body 11 to the support blocks 21. Further, the coupling part 10 includes the toggle clamp 12 adapted to fix the coupling part body 11 to the corresponding ceiling structure 2.

A ball plunger is a ball-shaped spring-loaded device, which is used for fixing a structure in position. A ball and a spring are located inside the ball plunger so that if an external force is applied, the ball is pressurized, and contrarily, if the external force disappears or becomes weakened, the ball returns to its original position by means of the force generated from the spring. As a result, the structure is fixed in position. Since the function and configuration of the ball plunger are well known, details of the ball plunger 13 will not be explained anymore.

The toggle clamp is a mechanical device designed to quickly and securely fix an object in place. The toggle clamp includes a lever and a hinge structure so that it provides a fixing force, and further, the toggle clamp is advantageous for quick, repeated fixing work. If the lever is pulled by a user, the toggle clamp operates to allow the lever to be locked at a given position, so that the object is fixed, and in this case, even if an external force is applied to the toggle clamp, the lever is not unlocked. If the lever is unlocked by the user, further, the toggle clamp is unfastened to allow the object to be removed from the fixed state. Since the function and configuration of the toggle clamp are well known, details of the toggle clamp 12 will not be explained anymore.

Referring to FIG. 4, the coupling part body 11 includes an upper body 111 and a lower body 112, and the upper body 111 and the lower body 112 include one or more holes 113. A portion of the toggle clamp 12 moves along the hole 113 corresponding thereto, and further, the ball plungers 13 are fixedly located on the holes 113.

Referring to FIGS. 4 to 6, the upper body 111 is shaped to have a horizontal top flange and a downward concave groove formed on the center of the top flange. The ball plungers 13 are located inside the concave groove of the upper body 111 of the coupling part body 11. Further, the lower body 112 is shaped to have a horizontal bottom flange and an upward concave groove formed on the center of the bottom flange. The shaft of the toggle clamp 12 moves inside the concave groove of the lower body 112 of the coupling part body 11, so that the toggle clamp 12 is fastened or unfastened.

Referring continuously to FIGS. 4 to 6, a side flange 211 of the support blocks 21 is firmly fixed to the upper body 111 by means of the ball plungers 113 located on the upper body 111. Further, the side flange 211 is coupledly inserted into the concave groove of the upper body 111 so that it cannot be separated easily from the upper body 111. FIG. 7A shows a state before the coupling part 10 is fixedly coupled to the support blocks 21 of the block module part 20, and FIG. 7B shows a state after the coupling part 10 has been fixedly coupled to the support blocks 21.

Referring to FIGS. 8A and 8B, the ceiling structure 2 is firmly fixed to the lower body 112 by means of the toggle clamp 12 located on the lower body 112. In this case, the ceiling structure 2 may be a T-bar. The ceiling structure 2 is coupledly inserted into the concave groove of the lower body 112 so that it cannot be separated easily from the lower body 112. FIG. 8A shows a state before the coupling part 10 is fixedly coupled to the ceiling structure 2, and FIG. 8B shows a state after the coupling part 10 has been fixedly coupled to the ceiling structure 2.

As described above, the variable plate 1 is stably fixed to the ceiling structures 2 by means of the configurations, shapes, and coupling relations of the respective parts, so that the variable plate 1 can prevent the worker or heavy object from falling down therefrom.

Next, explanations of the block module part 20 and the configuration around the block module part 20 will be given with reference to the attached drawings. FIG. 9 is an enlarged perspective view showing the extension blocks of the variable plate for ceiling work according to the present disclosure, FIG. 10 is a perspective view showing an example of the extension block of the variable plate for ceiling work according to the present disclosure, FIG. 11 is a perspective view showing another example of the extension block of the variable plate for ceiling work according to the present disclosure, FIGS. 12A and 12B are side views showing operating states of the extension block of the variable plate for ceiling work of FIG. 11, FIGS. 13 to 14B are perspective views showing a method for fixing the support blocks of the variable plate for ceiling work according to the present disclosure, and FIGS. 15A to 15C are perspective views showing top fasteners and module fasteners of the variable plate for ceiling work according to the present disclosure.

As shown, the block module part 20 includes the support blocks 21 and the extension blocks 22. Further, the block module part 20 includes the top fasteners 23, the underside fasteners 24, and the module fasteners 25 adapted to fixedly coupling the support blocks 21 to one another.

Referring to FIGS. 9 to 11, each extension block 22 is located between the neighboring support blocks 21 and extendable in a longitudinal direction thereof.

Referring to FIG. 10, the extension block 22 includes a first fixed case 221 fixed to one side support block 21 of the neighboring support blocks 21, a second fixed case 223 fixed to the other side support block 21 of the neighboring support blocks 21, and a fixing guide 222 located between the first fixed case 221 and the second fixed case 223. As the second fixed case 223 slides along the fixing guide 222, it is varied in position with respect to the first fixed case 221. That is, a longitudinal distance between the neighboring support blocks 21 is adjustable by means of the extension block 22.

Referring continuously to FIG. 10, the first fixed case 221 has a plurality of holes 2211 formed on top thereof. Further, the second fixed case 223 has a plurality of holes 2231 formed on sides thereof. Escape prevention pins 224 are coupled to the holes 2231 of the second fixed case 223 so that the second fixed case 223 and the fixing guide 222 are fixed to each other. Even though not shown, a wire or strap may be provided to prevent the escape prevention pins 224 from being lost. The first fixed case 221 and the second fixed case 223 move relative to each other and are thus located on appropriate positions after the escape prevention pins 224 have been removed from the holes 2231 by the worker, and next, the escape prevention pins 224 are fitted to the holes 2231 to prevent the first fixed case 221 and the second fixed case 223 from moving relative to each other, so that the first fixed case 221 and the second fixed case 223 are fixed. It is possible that the escape prevention pins 224 or the holes 2231 are designed to have specific shapes or structures to prevent the escape prevention pins 224 from easily escaping from the holes 2231 after the escape prevention pins 224 have been fitted to the holes 2231.

Generally, sizes of the ceiling of the building or construction site are different, and therefore, a space in which the ceiling structures 2 and the variable plate 1 are built may be differently provided. According to the embodiment of the present disclosure, the entire length of the variable plate 1 can increase by means of the addition of the extension blocks 22, which enables the ceiling work to be performed safely according to such various spaces.

Next, another example of the extension block 22 will be explained with reference to FIGS. 11 to 12B. In this case, the corresponding parts in the above-mentioned embodiment of the present disclosure are indicated by corresponding reference numerals and the repeated explanation on the corresponding parts will be avoided. Each extension block 22 has the first fixed case 221, the fixing guide 222, the second fixed case 223, and sliders 225. The sliders 225 are located between the first fixed case 221 and the fixing guide 222 and between the second fixed case 223 and the fixing guide 222. Referring to FIGS. 12A and 12B, the sliders 25 as moving parts allow the fixing guide 222 to be located on the insides thereof and allow vertical flange 212 of the support block 21 to be placed therebetween in such a way as to locate the second fixed case 223 on the outsides thereof.

An escape prevention part 226 is located on one side of the second fixed case 223. The escape prevention part 226 serves to fix the second fixed case 223, the fixed guide 222, and the sliders 225 to one another. The escape prevention part 226 is movable forward and backward by means of rotation of a screw thread or other structures such as a clamp, a lever, a cam, and the like. The escape prevention part 226 may be appropriately designed by a person having ordinary skill in the art according to its function, and therefore, an explanation of the escape prevention part 226 will be avoided.

As the escape prevention part 226 is controlled by the user, the coupling among the second fixed case 223, the fixed guide 222, and the sliders 225 is released to allow the second fixed case 223 to move relative to the first fixed case 221, and after the second fixed case 223 is placed at an appropriate position with respect to the first fixed case 221, next, the escape prevention part 226 is controlled again by the user, so that the second fixed case 223, the fixed guide 222, and the sliders 225 are fixedly coupled to one another. Therefore, a relative distance between the first fixed case 221 and the second fixed case 223 is minutely adjusted, and in this case, such adjustment is more advantageous than the adjustment by the distance between the neighboring holes 2231 of the second fixed case 223 in the above-mentioned embodiment of the present disclosure.

Next, explanations of a method for fixing the support blocks and configurations of the support blocks will be given with reference to the attached drawings. Referring to FIGS. 13 to 14B, the plurality of support blocks 21 are provided. In this case, the entire width of the support blocks 21 may be adjusted according to a working situation of the worker or an installation situation of the heavy object. Therefore, the block module part 20 includes the plurality of support blocks 21 in a transverse direction thereof. As shown, for example, four blocks, that is, a first support block 21a, a second support block 21b, a third support block 21c, and a fourth support block 21d are provided as the support blocks 21.

According to the embodiment of the present disclosure, in this case, the block module part 20 further includes top fasteners 23 and underside fasteners 24 for fixing the first to fourth support blocks 21a to 21d arranged in the transverse direction thereof.

Referring continuously to FIGS. 13 to 14B, each top fastener 23 is fittedly coupled to tops of the first to fourth support blocks 21a to 21d of the block module part 20 to fix the first to fourth support blocks 21a to 21d to one another. Further, each underside fastener 24 is fittedly coupled to undersides of the first to fourth support blocks 21a to 21d of the block module part 20 to fix the first to fourth support blocks 21a to 21d to one another.

Referring to FIGS. 15A to 15C, the block module part 20 consists of a first block module 20a and a second block module 20b. The first block module 20a and the second block module 20b have substantially the same structure or shape. That is, the first block module 20a includes the plurality of support blocks 21 in a transverse direction thereof and the top fasteners 23 and the underside fasteners 24 for fixing the plurality of support blocks 21 to one another. The second block module 20b is located close to the first block module 20a in a transverse direction thereof. Further, the second block module 20b includes the plurality of support blocks 21 in the transverse direction thereof and the top fasteners 23 and the underside fasteners 24 for fixing the plurality of support blocks 21 to one another.

Further, the block module part 20 includes module fasteners 25 for fixing the first block module 20a and the second block module 20b to each other. Actually, the module fasteners 25 have the similar shapes and materials to the top fasteners 23.

FIG. 15A shows the top fasteners 23, the underside fasteners 24, and the module fasteners 25 of the block module part 20. For example, the first block module 20a consists of four support blocks 21, and the second block module 20b consists of four support blocks 21.

As shown in FIG. 15B, each top fastener 23 consists of horizontal portions 231 corresponding to tops of the individual support blocks 21 and concave portions 232 formed concavely between the neighboring horizontal portions 231. Each concave portion 232 has the same width as the gap between the neighboring support blocks 21 in the transverse direction and is fitted to the gap.

As shown in FIG. 15C, each module fastener 25 consists of horizontal portions 251 and a concave portion 252 formed concavely between the neighboring horizontal portions 251. The concave portion 252 has the same width as the gap between the first block module 20a and the second block module 20b and is fitted to the gap.

The top fasteners 23, the underside fasteners 24, and the module fasteners 25 may be provided appropriately in number according to the longitudinal sizes of the support blocks 21. Further, any ones among the top fasteners 23, the underside fasteners 24, and the module fasteners 25 may be provided, and otherwise, ones or more of them or all of them may be provided.

Up to now, the configuration of the coupling part located on one side of the block module part has been explained. Now, the coupling part located on the other side of the block module part and the configuration around the coupling part will be explained with reference to FIGS. 16 to 18B. In this case, the corresponding parts in the above-mentioned embodiment of the present disclosure are indicated by corresponding reference numerals and the repeated explanation on the corresponding parts will be avoided. FIG. 16 is an enlarged perspective view showing the coupling part between the support blocks of the variable plate for ceiling work according to the present disclosure, and FIGS. 17 to 18B are side views showing operating states of the coupling part of the variable plate for ceiling work of FIG. 16.

According to the embodiment of the present disclosure, the coupling parts 10 are located on both sides of the support blocks 21 of the block module part 20. The coupling parts 10 on both sides of the support blocks 21 have perfectly the same shape or function as each other, and otherwise, the coupling parts 10 on both sides of the support blocks 21 may have partially different shapes or functions from each other. For example, the coupling parts 10 on both sides of the support blocks 21 are fixedly coupled to the ceiling structures 2, and otherwise, any one or both of the coupling parts 10 on both sides of the support blocks 21 is (are) connected only to the neighboring block modules 20 in longitudinal directions, not to the ceiling structures 2.

Referring to FIGS. 17 to 18B, the coupling part 10 includes the coupling part body 11, a first ball plunger 13a for fixing the coupling part body 11 and the support block 21 to each other, and a second ball plunger 13b for fixing the coupling part body 11 and the ceiling structure 2 to each other. In the above-mentioned embodiment of the present disclosure, the coupling part 10 is provided with the ball plungers and the toggle clamp, but in this case, two ball plungers 13a and 13b are provided, without the toggle clamp.

Next, additional parts of the variable plate for ceiling work according to the embodiment of the present disclosure will be explained with reference to FIGS. 19 and 20. FIG. 19 is a perspective view showing a state where the variable plate for ceiling work according to the present disclosure further includes a sensing part, and FIG. 20 is a perspective view showing a state where the variable plate for ceiling work according to the present disclosure further includes a lighting part.

Referring to FIG. 19, the block module part 20 further includes a sensing part 201. The sensing part 201 is detachably mounted on the end portions of the block module part 20. For example, the sensing part 201 is an infrared sensor consisting of a pair of transmitter 201a and receiver 201b. If the worker approaches the end portions of the block module part 20, the sensing part 201 senses the worker's approach and generates a warning sound or transmits the sensing result to the worker or manager. As a result, the worker can be protected from falling accidents.

Referring to FIG. 20, the block module part 20 further includes a lighting part 202. The lighting part 202 is located on one surface of the block module part 20. Further, the lighting part 202 is fixed to the block module part 20 or detachably mounted onto the block module part 20. The lighting part 202 includes a body and an LED located on one side of the body. Further, the body of the lighting part 202 is made of a flexible material, and otherwise, it may have a flexible structure, so that lighting is applied to a desired place of the worker.

Up to now, the variable plate for ceiling work according to the embodiment of the present disclosure has been explained. If the variable plate for ceiling work according to the embodiment of the present disclosure is used, as mentioned above, the worker can safely move on the ceiling of the building or construction site. Further, the variable plate of the present disclosure can be easily built and removed on/from the ceiling. Moreover, the variable plate of the present disclosure is applicable to various work spaces, while ensuring the worker's safety and convenient movements. Furthermore, the variable plate of the present disclosure is lightweight, has excellent mobility, and is easily extendable in transverse and longitudinal directions thereof so that the variable plate can be built on different construction sites.

While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention. For example, the parts expressed in a singular form may be dispersedly provided, and in the same manner as above, the parts dispersed may be combined with each other.

This application is intended to cover any adaptations or variations of the present invention. Therefore, it is manifestly intended that this invention be limited only by the claims and the equivalents thereof.