CLIMBING FORMWORK DEVICE FOR A SHAFT

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of European Patent Application No. EP 24190515.7, filed Jul. 24, 2024, the disclosure of which is hereby incorporated herein in its entirety by reference.

FIELD OF THE INVENTION

The present invention relates to a climbing formwork device for one or several shafts.

BACKGROUND

Formworks have generally been set up and moved by means of cranes or hoisting gear. Scaffolding structures have been transported to the top of a structure being built as climbing formwork in order to support and fasten concrete formworks in the course of the construction progress of a structure, whereby building parts, such as, for example, a shaft, e.g., an elevator or supply shaft, are built upwards during the general construction progress. However, the vertical transporting of the climbing formwork with hoisting gear or cranes and the attaching of the scaffoldings to already completed concrete elements of the structure being built is time-consuming and labor-intensive. For the most part, current self-climbing formworks have a hydraulic drive and climb upwards on a climbing guide rail, which requires the formwork to be moved back. Other solutions are based on transversely running carriers, which rest with gravity pawls in wall pockets, or on consoles, which are anchored in the wall. At least two such support structures, which alternately support the loads when climbing and when pulling up the climbing mechanism, are always necessary. All of these solutions require materials and labor for fastening the formwork to the structure including the required preparations and extra work of placing, anchoring and adjusting the formwork. In the case of large anchors or wall pockets, a shifting of the vertical reinforcement is necessary. The operation and climbing steps have not been automated or have only been partly automated until now.

SUMMARY

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. Other aspects and advantages of the invention will be apparent from the following detailed description of the embodiments and the accompanying drawing figures.

It is the object of the invention to create a self-climbing formwork device, which provides for the construction of a vertical shaft with less personnel expenditure and within a shorter period of time than previously required. In addition, the anchoring in the structure should be recoverable without leaving any residue and the dimensions thereof should be as small as possible. As many operating steps as possible should run in an automated manner without human intervention. This object is solved by means of a climbing formwork device with the features of claim 1. Advantageous further developments of the invention are subject matter of the dependent claims. Advantageous further developments of the invention are also described in the description and in the drawings.

According to the invention, the climbing formwork device has a central formwork carrier means, which supports at least four formwork parts on its circumference. By means of the formwork carrier means, the formwork parts can be arranged next to one another so as to be aligned on their circumference in such a way that they form a closed inner formwork for the shaft. The formwork carrier means has a lifting means, which is formed to move at least two anchoring formwork parts, which are spaced apart from one another, in particular at least two anchoring formwork parts, which face away from one another or which are positioned diagonally opposite one another, relative to the formwork carrier means and relative to the other formwork parts in the lifting direction. In this description, the anchoring formwork parts are also referred to as lifting elements. This makes it possible to transport the formwork carrier means upwards in the shaft by means of the lifting means. It is important to note here that the lifting direction essentially corresponds to the longitudinal direction of the shaft and also to the longitudinal direction of the climbing formwork device, which is generally formed in an elongated manner.

The movable formwork parts can be fixed in an already completed lower shaft section at the beginning of a lifting process, which, described below, takes place by means of securing appendages or attachments or connectors, which extend outwards from the formwork parts in the direction of the concrete of the shaft.

The entire formwork carrier means can now be lifted upwards while supporting itself on the anchoring formwork parts or lifting elements by means of the lifting means, preferably by a lifting length, which corresponds to the length of the formwork parts, the height of the concreting section or only a portion thereof. Once the formwork carrier means has been raised into the new higher position, it is fixed there, again preferably with the help of securing appendages, which extend essentially transversely, in particular at a right angle to the formwork parts in the direction of the concrete. They then engage with recesses of the concrete of an already completed lower shaft section. Alternatively, it is also possible that other appendages, which support themselves on the upper edge of an already concreted shaft section or in recesses in the concrete wall, can be provided on the formwork carrier means.

Once the shaft section is formed, which cannot be moved in the lifting direction, and the formwork carrier means has been raised into the new position, which may extend upwards into the region of the not yet concreted shaft approximately by one length of the shaft section, the at least two anchoring formwork parts, which face away from one another and which have previously been used as support for the lifting process, can be pulled up from this position, so that all formwork parts are now in the new raised position with the formwork carrier means. Alternatively, it is also possible to push the anchoring formwork parts into the higher position, to fix them there and to then pull up the entire formwork carrier means with the other formwork parts.

For the lifting process, the formwork carrier means is furthermore formed to move all formwork parts transversely to the lifting direction to a retracted lifting position, in which they are arranged closer to the formwork carrier means and are spaced apart from the shaft walls, and, for the connecting process, a formwork position, which projects further away from the formwork carrier means and in which the formwork parts form a closed inner formwork for the concreting of the shaft wall.

In the lifting position, the anchoring formwork parts are spaced apart from the already completed shaft section and can be moved in the lifting direction, without being hindered by the completed shaft section or by a completed reinforcement for the new shaft section. The formwork carrier means will be moved into the new position by means of the lifting means, after all formwork parts, which have also been moved, have assumed their lifting position. Once the formwork carrier means has been raised with the formwork parts into the new position and has been fixed there, the anchoring formwork parts can be moved from their formwork position into the lifting position and can then be pulled upwards into the new position of the formwork carrier means. The entire climbing formwork device is now in the new position and can move all formwork parts into their formwork position there, which provides for a concreting of the shaft by a further concreting section height.

The anchoring formwork parts do not have to be positioned exactly opposite one another. In the case of a round shaft, for example six formwork parts can be present, every second one of which is embodied as lifting element. The movable formwork parts do not face away from one another in this case but are at a 120-degree angle to one another. However, for stabilizing reasons, it is preferrable that at least two of the anchoring formwork parts are positioned opposite one another. In the case of an angular shaft, the corner formwork parts, i.e., four pieces in the case of a rectangular shaft, are preferably used as anchoring formwork parts. When lifting the formwork carrier means by means of the lifting means, all four corner formwork parts can then be used alternately for supporting purposes. Two corner formwork parts positioned opposite one another of the four corner formwork parts can then be pulled up by means of the lifting means and can then be used by means of their securing appendages to fix the formwork carrier means to the completed shaft section in the raised position. The remaining two corner formwork parts are pulled up only subsequently, whereby the entire climbing formwork device is then in its new raised position.

The number of formwork parts and the geometry thereof corresponds to the geometry of the shaft. In the case of an angular shaft, there can be, for example, corner formwork parts and flat formwork parts arranged therebetween, while several, at least four, curved formwork parts, which are arranged next to one another in the circumference and all of which are formed in a curved manner according to the shaft geometry of the shaft to be formed, are provided for creating a round shaft.

The lifting means can be formed by an electrical means, such as, for example, a motor with rack and a pinion, which is known in the art of rack-and-pinion elevators. Hydraulic cylinders, which relocate the formwork carrier means in a single lift, are also foreseeable. However, hydraulic cylinders with latching climbing mechanism, which operate reliably in a rougher construction environment and which can exert large forces, are preferably used as lifting means. Spindle drives are generally also foreseeable as drives.

In an advantageous further development of the invention, two formwork parts, which are spaced apart from one another, in particular the anchoring formwork parts, have at least one securing appendage, which extends transversely to the lifting direction, for the vertical fixation of the climbing formwork device in the concrete of the already completed shaft wall. These securing appendages, which have already been discussed above, project from the formwork part and thus engage with the concrete of the shaft, which is to be cast or which has already been completed. A secure fixation of the raised formwork carrier means in the new raised position can take place in this way. As already described above, a securing appendage of this type can also be formed by an edge or a foldable pawl, which supports itself on the already cast part of the shaft. In a simplest form, the securing appendage can also be an essentially horizontal profiling or extension of the formwork part, which would have the disadvantage, however, that the completed concrete wall is then also profiled. The securing appendages, which are spaced apart from one another in the lifting direction, can be adjusted in their distance relative to one another, which makes it possible to realize concreting sections of different lengths. When the formwork parts are length-adjustable, e.g., by means of intermediate parts, this fact can be also be taken into account. The settability of the distance can be realized in different ways, e.g., one of the securing appendages is connected in an adjustable manner on a rail, which extends in the lifting direction, or several fastening points, which are spaced apart from one another, for at least one of the two securing appendages are provided in the lifting direction. Intermediate parts can alternatively also be provided on the formwork parts, in order to set the distance between of the securing appendages, e.g., in the region of the upper end and of the lower end.

According to the invention, at least two securing appendages, which are spaced apart from one another in the lifting direction, are formed on the formwork parts, which are spaced apart from one another, in particular, positioned opposite one another, and preferably on the anchoring formwork parts. The vertical distance of these two securing appendages can either be set in adjustable increments or a constant distance relative to a concreting section height or to a climbing height. A carrier of a securing appendage, e.g., the anchoring formwork part, can alternatively be capable of being displaced relative to the other securing appendage by means of a carriage, which moves in the lifting direction and which in particular carries the other securing appendage, in order to be able to set the distance between the two formwork parts.

During the formation of the shaft, the upper securing appendage then forms a recess in the cast concrete, which recess is formed according to the shape of the securing appendage and with which the lower securing appendage engages after the hardening of the concrete and after the raising of the formwork carrier means and of the formwork parts. The formwork carrier means can be fixed in the new raised vertical position hereby.

In an advantageous further development of the invention, at least one of two securing appendages can be adjusted to a locked position and a release position, wherein, in the locked position, its free end projects from the formwork plane of the respective formwork part into the concreting region of the shaft wall to be formed and, in the release position, is aligned with the formwork plane of the respective formwork part or is set back or projects only so far that it does not collide with the shaft wall in the case of the retracted lifting position of the formwork parts during the lifting process. This has the advantage that the lifting element can be easily released from its fixing position, in order to then move it in the vertical direction.

The securing appendage is preferably formed so as to taper, e.g., in a pyramid-shaped or cone-shaped manner, in particular as a cone-shaped bolt, the diameter of which is reduced towards its free end. This has the advantage that the securing appendage can be easily retracted from its fixed position in the hardened concrete, in order to release the respective formwork part for a vertical lifting movement. The insertion of a cone into a corresponding recess of the hardened concrete is also facilitated.

It is important to note that the invention can in particular be used for vertical or also for obliquely running shafts. It is generally also possible, however, to use the device according to the invention for horizontally running shafts.

If a polygonal shaft is to be created, preferably at least eight formwork parts are on the circumference of the formwork carrier means, four of which are alternately formed as corner formwork parts and four as flat formwork parts. According to the size of the shaft, several flat formwork parts can also be arranged next to one another, whereby any size and geometry of an angular shaft can be realized. The corner formwork parts are preferably formed as the anchoring formwork parts in this case. In the case of a rectangular shaft, all four corner formwork parts are preferably formed as anchoring formwork parts, which has the advantage that two corner formwork parts positioned opposite one another can be used to horizontally secure the climbing formwork device, whereas the other two corner formwork parts positioned opposite one another can be used to secure the climbing formwork device in its new position after being raised, preferably via the securing appendages.

In an advantageous further development of the invention, the formwork carrier means has a central carrying structure, which moves in the lifting direction and on the circumference of which control elements for each formwork part are arranged, which are formed to move the formwork parts to the lifting position and the formwork position. Several formwork parts can also be capable of being moved together by means of a control element in a climbing formwork device, in which, for example, several flat formwork parts are arranged next to one another. Otherwise, the formwork parts, which are arranged next to one another, can preferably be moved to their lifting position and the formwork position by means of a separate control element. The movement to lifting position and formwork position takes place with a directional component transversely to the lifting direction, and may be transverse to the vertical direction, because the lifting direction is vertical in the case of most shafts.

For the movement to the lifting position and the formwork position, the formwork parts can be connected to the carrying structure, for example, via at least two carrying arms, which are spaced apart from one another in the lifting direction and which can be pivoted about an axis transverse to the lifting direction, whereby it is then possible to arrange the formwork parts in their formwork position or in their lifting position. The control element is preferably formed as a first hydraulic cylinder, which is able to carry out the pivoting movement to fix the formwork part in the lifting position and in the formwork position. The advantage of a lifting cylinder compared to electrical drives lies in its larger resistance to dirt, which is present at a construction site, during construction operation.

In an advantageous further development of the invention, each lifting element or anchoring formwork part, respectively, is assembled on a carriage, which extends in the lifting direction, wherein the carriage is connected to a carriage carrier so as to be capable of being moved in the lifting direction. The carriage carrier, in turn, is connected to the carrying structure in the same way as the formwork part, that is via at least two carrying arms, which are spaced apart from one another in the lifting direction, and can thus move the carriage as well as the lifting element or anchoring formwork part connected to it, to the lifting position and the formwork position, driven by a control element, in particular a first hydraulic cylinder. Other common drives, e.g., spindle drives, can also be used as a control element.

An actuator of the lifting means is preferably arranged between the carriage and the carriage carrier in order to move the carriage and the carriage carrier relative to one another in the lifting direction. In the lifting direction, the carriage preferably has approximately the length of a formwork part, whereby it is possible to raise the climbing formwork device approximately the length of the formwork parts during a lifting process. The actuator can thereby preferably be formed by a second hydraulic cylinder, which is connected to the carriage carrier on its first end and the second end of which has a ratchet mechanism with a first latching pawl, which engages with a detent formed on the carriage. This has the advantage that the actuator can have a smaller lifting length than the length of an entire lifting process. The raising of the formwork carrier means into the new raised position thus does not need to take place in one lifting process. If, for example, the length of the formwork parts and thus the length of a lifting process was approximately 3 m, a hydraulic cylinder with a 3 m long lift would need to be used when using a hydraulic cylinder. This is hardly feasible for spatial and for cost reasons. A ratchet mechanism in combination with a detent formed on the carriage is thus used, so that a lifting process can be realized with a number of small lifting cycles. A second ratchet mechanism with a second latching pawl is preferably formed on the carriage carrier, which ratchet mechanism cooperates with the detent of the carriage, in order to secure the new position of the carriage on the carriage carrier after lifting the actuator in its new position. For example, the raising of the formwork carrier means can thus take place in five to ten lifting cycles of the actuator, wherein each lifting cycle raises the formwork carrier means by ⅕ to 1/10 of the entire lifting length. The actuator, in particular the second hydraulic cylinder, can thus be built smaller, for example having a length of less than 1 m. The detent of the carriage, in combination with the ratchet mechanism, additionally has the advantage that the formwork carrier means is held securely in the new position after each small lifting cycle by means of the latching pawl, which is arranged or positioned on the carriage carrier. If a sudden pressure loss occurs, the formwork carrier means does not fall back into its original position by the complete lifting length, but remains on the last detent, which can be positioned, for example, between 20 and 50 cm therefrom, depending on the distance of the detent from the formwork carrier means.

The two latching or ratchet mechanisms can preferably be switched between two opposite movement directions, which can be realized in a spring-loaded or positively controlled manner. This has the advantage that the formwork carrier means can first be pushed upwards, supporting itself on the carriage, and the ratchet mechanisms can be switched over once the formwork carrier means has reached its new raised position, and the movable formwork carrier parts, which had formerly been used for securing purposes, can be pulled up into the new position of the formwork carrier means. The actuator can thus operate under pressure to lift, as well as under tension.

The central carrying structure is preferably constructed in two parts in the lifting direction, with a lower part, in which the carriages and the carriage carriers and preferably feet are also arranged on the lower end, and with an upper part, in which the formwork parts are arranged. The lower part of the carrying structure is thus functionally optimized for supporting and further moving the entire climbing formwork device in the shaft, while the upper part of the carrying structure with the formwork parts has the main task of forming the shaft, i.e., the movement of the formwork parts into or out of the formwork position. Both parts are formed to be of approximately the same length. The foot has the advantage that the climbing formwork device can be set up on the bottom of the structure at the beginning of the shaft construction. In the further course of climbing and continued formation of the shaft in the vertical direction, the feet are obviously no longer needed, the climbing formwork device is then supported on the securing appendages in the concrete of the already completed shaft wall.

The carriage is preferably connected to the lower end of the movable formwork part, so that the overall assembly of carriage and movable formwork part extends approximately over the entire length of the entire central carrying structure, wherein the movable formwork part is arranged in the upper end of the carrying structure and the carriage in the lower part.

The central carrying structure is preferably divided into four quadrants transverse to the lifting direction, which quadrants can be connected to one another either directly or via intermediate parts. Different shaft sizes and geometries can be realized in this way and the carrying structure can be adapted to the size of a shaft to be produced. The number of the formwork parts to be used can also be adapted according to the size of the carrying structure resulting in this way.

In an advantageous further development of the invention, the formwork parts can be extended in their length in the lifting direction by means of extension parts, so that the climbing formwork device can be optimized for different shaft heights. The lifting capacity of the climbing formwork device is preferably designed with respect to the maximum length of the formwork parts. In the case of longer formwork parts, the lifting process can then also be enlarged accordingly in this way.

The control elements formed for the movement of the formwork parts to their lifting position and their formwork position, as well as the actuator or the actuators of the lifting device, are preferably formed by means of hydraulic cylinders, which can preferably be controlled via a central control. If the securing appendages are movable, the corresponding drives for them can preferably also be controlled via the central control. The control can either be located on the central carrying structure or can be located in a control cabinet, connected via cables. If the central control is in communication with the formwork carrier means, said central control preferably has a communication module for radio communication, in order to be able to control the climbing formwork device in this way by means of a wireless control apparatus, e.g., from the bottom of the structure.

The climbing formwork device preferably has a guide structure, which is arranged with the carrying structure, preferably on the lower end thereof and which is spaced apart from the securing appendages in the lifting direction and which rests against the inner sides of the already completed shaft wall, preferably via adjustable pressure rollers, in order to secure the climbing formwork device against tilting during the lifting process. This leads to increased operational safety of the climbing formwork device.

The invention has the advantage that the entire climbing formwork device can be operated by a single person, so that the personnel expenditure is minimized during the production of a concrete shaft. The climbing formwork device is in particular suitable for the production of very high shafts, in particular more than 50 m, because the above-described semi-automatic formwork creation and formwork raising has most of its advantages and recoups possible additional costs, in particular in longer shafts.

The invention also relates to a method for operating a climbing formwork device according to the claims, in the case of which the climbing formwork device is placed onto the bottom of a shaft, in which the formwork parts are moved into their formwork position.

A securing appendage is extended at the upper end of at least one of the movable formwork parts and the shaft is concreted according to the length of the formwork parts, provided that an outer formwork for the concreting of the shaft also exists. In the case of an angular shaft, the movable formwork parts are preferably the corner formwork parts. All four corner formwork parts are now left in their formwork position, while all other formwork parts are moved into their lifting position. The formwork carrier means is then raised upwards by the lifting length, which is a little less than the length of the formwork parts, together with the flat formwork parts by means of the lifting means. Two corner formwork parts, which face away from one another, are then moved into their lifting position and are then pulled upwards by the lifting means into the new raised position. There, they are moved into their formwork position, in which they rest with their lower end against the already completed shaft section.

In the case of the raised corner formwork parts, the securing appendages located on their lower end are then extended, so that they move into the recesses of the completed shaft section, which have been created by means of the securing appendages, which are arranged on the upper end, of the movable formwork parts in their previous position. The two raised corner formwork parts are then fixed in their new position of the formwork carrier means in this way. The last two movable corner formwork parts used for support purposes can lastly be moved from their formwork position into the lifting position and can be pulled upwards, so that the entire climbing formwork device is now in its new position with all formwork parts.

It is obvious for the person of skill in the art that all above-described embodiments of the invention can be combined with one another in any way, provided that features of different embodiments do not contradict one another.

The following expressions are used synonymously: latching mechanism and ratchet mechanism; and anchoring formwork part and lifting element.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described in an exemplary manner, below, on the basis of the schematic drawings, in which:

FIG. 1 shows a perspective view of a climbing formwork device according to an embodiment of the invention;

FIG. 2a shows a plan view of the climbing formwork device from FIG. 1;

FIG. 2b shows an exploded, plan view of the climbing formwork device from FIG. 1 divided into four separate quadrants;

FIG. 3a shows a perspective view of a first quadrant of the climbing formwork device from FIG. 2b;

FIG. 3b shows an elevation view of a second quadrant of the climbing formwork device from FIG. 2b;

FIG. 4 shows an exploded view of a quadrant of the climbing formwork device from FIG. 2b;

FIG. 5 shows a perspective view of the climbing formwork device of FIG. 1 at the beginning of a lifting process with all formwork parts in formwork position;

FIGS. 6a and 6b show elevation views of two adjacent quadrants of the climbing formwork device in the position according to FIG. 5;

FIG. 7 shows a perspective view of the climbing formwork device of FIG. 1 after the raising of the formwork carrier means and the non-movable formwork parts;

FIG. 8 shows an elevation view of a quadrant of the climbing formwork device in the position according to FIG. 7;

FIG. 9 shows a perspective view of the climbing formwork device of FIG. 1 after the first two corner formwork parts have been pulled up into the raised position of the formwork carrier means;

FIGS. 10a and 10b show elevation views of two quadrants positioned next to one another of the climbing formwork device in the position according to FIG. 9;

FIG. 11 shows a perspective view of the climbing formwork device of FIG. 1 after conclusion of the lifting process with the corner formwork parts in formwork position and the flat formwork parts in lifting position;

FIGS. 12a and 12b show elevation views of two quadrants positioned next to one another of the climbing formwork device in the position of FIG. 11;

FIG. 13 shows a cross-sectional view of the climbing formwork device of FIG. 1 according to the invention;

FIGS. 14a and 14b show detailed views of the lifting means of the climbing formwork device from FIG. 13; and

FIGS. 15a and 15b show perspective views of an embodiment of the climbing formwork device when using intermediate parts for extending the formwork parts.

The drawing figures do not limit the invention to the specific embodiments disclosed and described herein. The drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the invention.

DETAILED DESCRIPTION

The following detailed description references the accompanying drawings that illustrate specific embodiments in which the invention can be practiced. The embodiments are intended to describe aspects of the invention in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments can be utilized, and changes can be made without departing from the scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense. The scope of the invention is defined only by the appended claims, along with the full scope of the equivalents to which such claims are entitled.

FIG. 1 shows a climbing formwork device 10 with a formwork carrier means 12, which is divided into four quadrants 14a to 14d transverse to the lifting direction H and which has four corner formwork parts 16 and eight flat formwork parts 18 on its circumference. The corner formwork parts 16 are assembled with their lower ends connected to elongated carriages 20, which extend downwards from the corner formwork parts 16 in the lifting direction H. The corner formwork parts 16 and carriages 20 connected thereto in each case have, spaced apart in the lifting direction H, two upper securing appendages 22a and two lower securing appendages 22b, the distance L of which in the lifting direction H corresponds approximately to the length I of the formwork elements 16 and 18. The formwork carrier means 12 has a central carrying structure 24, which consists of four quadrants 26a-26d, which have a foot 28 on their lower end. The formwork parts 16 and 18 are connected to the central carrying structure 24 via control elements 30a and 30b, which will be described in more detail herein, so as to be adjustable to the formwork position of the formwork parts 16 and 18 illustrated in the figure and a lifting position (FIG. 9), in which the formwork parts 16 and 18 are set back closer to the central carrying structure 24 and can thus be moved in the lifting direction H within an already completed shaft section.

FIG. 2a shows the plan view of the climbing formwork device according to FIG. 1, whereby the securing appendages 22a and the division of the climbing formwork device 10 into quadrants 14a to 14d are shown, and which is even more clearly shown in FIG. 2b by the exploded views thereof. The central carrying structure 24 is also divided into quadrants 26a to 26d according to the division of the climbing formwork device. The quadrants 26a-26d can either be connected directly to one another, as is shown in FIG. 2a, or via (non-illustrated) intermediate parts, whereby any rectangular geometries of the climbing formwork device 10 can be realized for any shaft cross sections.

FIGS. 3a and 3b show the fastening of the formwork parts 16 and 18 to the central carrying structure 24 or to the quadrants 26d and 26c thereof, respectively. The flat formwork parts 18 are each suspended on the central carrying structure 24 by means of two first carrying arms 32a. The first carrying arms 32a can be pivoted about pivot axes extending perpendicular to the lifting direction H, wherein the pivot position of the carrying arms 32a is set by a first control element 30a. By actuating the first control elements 30a, the flat formwork parts 18 can be moved into the illustrated formwork position or into a lifting position, in which they are spaced apart from the shaft wall and can thus be displaced in the lifting direction H via a lifting means, which will be described herein.

The corner formwork parts 16 are connected to the carriages 20. The carriages 20, in turn, are connected to a carriage carrier 36 so as to be capable of being moved to their lifting position and formwork position. The carriage carrier 36 is articulated via two second carrying arms 32b on the central carrying structure 24 or on the corresponding quadrant 26. The pivot position of the second carrying arms 32b can be set via second control elements 30b, so that the corner formwork parts 16 can also be moved to the illustrated formwork position and a lifting position, which is located closer to the central carrying structure 24, by means of the carriages 20 and carriage carriers 36.

The carriage 20 can be moved relative to the carriage carrier 36 in the lifting direction via a lifting means 34, which is illustrated in more detail in FIG. 4. FIG. 4 shows an exploded view of a quadrant 14d of the climbing formwork device 10 and thus a quadrant 26d of the central carrying structure 24. The lifting means 34 consists of the carriage carrier 36, on which the carriage 20 is connected so as to be capable of being shifted in the lifting direction H. The carriage carrier 36 is articulated via the two second carrying arms 32b, which are spaced apart from one another, on the respective quadrant 26d of the central carrying structure 24 and can be adjusted to a formwork position, which is spaced apart father from the quadrant 26d of the carrying structure 24, and a lifting position, which is offset closer to the quadrant 26d of the carrying structure 24, via the second control element 30b, in particular a hydraulic cylinder.

The lifting means 34 includes an actuator 38 in the form of a second hydraulic cylinder, which moves on the carriage carrier 36 in the lifting direction H and on the free end 40 (see FIGS. 14a and 14b) of which a first latching pawl 42 of a first ratchet mechanism is arranged or positioned. A second latching pawl 46 of a second ratchet mechanism is arranged or positioned directly on the carriage carrier 36. The two latching pawls 42 and 46 cooperate with a detent 50 formed on the carriage 20 and the corner formwork part 16. By means of actuation of the actuator 38, the first latching pawl 42 arranged on the free end 40 of said actuator is moved in the lifting direction H, whereby it engages with the detent 50 and moves the carriage 20 and the corner formwork part 16 connected thereto relative to the carriage carrier 36. The second latching pawl 46 arranged directly on the carriage carrier 36 then engages with the detent 50 in the new position. The actuator 38 can now be moved back into its retracted position and can be actuated again, in order to carry out the relative movement between carriage carrier 36 and carriage 20 again, wherein the new position, in turn, is secured via the second latching pawl 46. The two latching pawls 42 and 46 can be switched over or the direction of action reversed, so that they permit a relative movement between carriage carrier 36 and carrier 20 in both directions.

The lifting device 34 can thus be used to move the formwork carrier means 12 upwards relative to the carriage 20. When the formwork carrier means 12 is in the raised position after the concluded lifting process, the two latching pawls 42 and 46 are switched over, so that the carriage 20 is now pulled upwards relative to the formwork carrier means 12. The two corner formwork parts 16, which are used for support purposes, are also pulled up with their respective carriages 20 into the new raised position of the climbing formwork device 10 in this way. The actuator 38, which is formed as second hydraulic cylinder, thus operates under tension as well as under pressure.

FIG. 5 shows the climbing formwork device 10 at the beginning of a climbing or lifting process. All of the formwork parts 16 and 18 are in their formwork position, in which they form the inner formwork of the shaft while concrete hardens. The corresponding elevation views of two quadrants of the climbing formwork device 10 are shown in FIGS. 6a and 6b.

The flat formwork parts 18 are in their lifting position in FIG. 7. In this position, it is possible to move them together with the formwork carrier means 12 into the illustrated raised position in the lifting direction. The four carriages 20 with the respective corner formwork parts 16 are still in the formwork position and serve the purpose of anchoring the climbing formwork device 10 in the set concrete of the shaft by means of the upper securing appendages 22a. The corresponding elevation view of a supporting quadrant 14d of the climbing formwork device 10 is illustrated in FIG. 8.

According to FIG. 9, two carriages 20 positioned opposite one another are now moved upwards with the corresponding corner formwork parts 16 by means of the lifting means 34 and are subsequently moved into their illustrated formwork position, wherein the lower securing appendages 22b thereof engage with the recesses of the set concrete, which were formed by means of the upper securing appendages 22a in the previous position according to FIG. 5. The position of the formwork carrier means 12 in the new position is secured in this way by means of the two corner formwork parts 16, which face away from each other. The corresponding views of adjacent quadrants 14c and 14d of the climbing formwork device 10 are shown in FIGS. 10a and 10b, wherein FIG. 10a shows the corner formwork part 16, which still supports the climbing formwork device 10, and FIG. 10b shows the already pulled-up fixing position of one of the two other raised corner formwork parts 16.

The two corner formwork parts 16, which remain in their lower original position, are now pulled upwards together with their carriages 20 by means of the lifting means 34 and are moved into the formwork position illustrated in FIG. 11 by means of the second control elements 30b. The entire climbing formwork device 10 is now secured in the set concrete via the corner formwork parts 16a-16d, in particular via the lower securing appendages 22b thereof. It is important to add here that the securing appendages 22a and b can be adjusted to the illustrated projecting fixing position and a retracted position, which is aligned with the plane of the corner formwork parts 16, so that the corner formwork parts 16 can be released from a secured position or can be transferred into a secured position more easily by means of the actuation of the securing appendages.

The elevation views, which correspond to the position of FIG. 11, of two quadrants 14c and d, which are positioned next to one another, of the climbing formwork device 10 are illustrated in FIGS. 12a and 12b. The flat formwork parts 18 are still in their lifting position and are subsequently moved into their formwork position, whereby the entire climbing formwork device is located in the initial state illustrated in FIG. 5 again. From then on, a new lifting process can begin again according to this pattern.

FIG. 13 shows a cross-sectional view of the climbing formwork device from FIG. 1, whereby the formation of the lifting means 34, including the carriage carriers 36, the carriages 20, and, the actuators 38 is shown. The first and second control elements 30a and 30b, the actuators 38 of the lifting device 34, as well as the securing bolts 22a and 22b can be actuated by means of a hydraulic control 52, which has a wireless communication module, in order to communicate with a radio controller 54 of the control 52. An operator can thus control the entire operation of the climbing formwork device 10 from the bottom of the structure.

FIGS. 14a and b show the operation of the lifting means 34 with the second hydraulic cylinder 38 as actuator of the lifting means 34, in FIG. 14a in the retracted position and in FIG. 14b in the extended position. The pushing actuation of the carriage 20 or of the corner framework part 16 takes place via a first latching pawl 42, which is connected to the free end 40 of the second hydraulic cylinder 38 or which is arranged on a carrying element connected thereto. The first latching pawl 42 is moved by means of the second hydraulic cylinder 38, while it engages with the detent 50 of the carriage 10 or of the corner framework part 16. It shifts the carriage 20 or the corner framework part 16 relative to the carriage carrier 36, and thus also relative to the framework carrier means 12 and the central carrying structure 24 thereof in the lifting direction H. The advanced position is then secured by means of the second latching pawl 46, which is connected to the carriage carrier 36, so that the carriage 20 can be shifted in this way relative to the carriage carrier 36 in several small lifting steps corresponding to the length of the second hydraulic cylinder 38, until the entire lift of the climbing formwork device 10 is reached, which corresponds approximately to the length I of the formwork parts 16 and 18.

FIGS. 15a and 15b show that the length of the formwork parts 16 and 18 can be enlarged by means of first shorter intermediate parts 56 and second longer intermediate parts 58, so that different resulting lengths 11 and 12 of the formwork parts, and thus a variable length of the inner formwork, results for the shaft. It is essential that the formwork parts 16 and 18 are formed in two parts in the lifting direction H and thus form a basic formwork 55 and a formwork crown 57 attached to the top or upper side thereof. Between these two, the intermediate parts 56 or 58 are used to extend the formwork parts 16 and 18. The formwork crown 57 is at the upper end of the formwork because the upper securing appendages 22a are possibly formed with corresponding drives there. On the lower end of the carrying structure 24, the figures also show a guide structure 60 on each side of a holder, which extends horizontally towards the shaft wall, with two impellers, which support themselves on the already formed shaft wall, in order to protect the climbing formwork device against tilting movement.

Many different arrangements of the various components depicted, as well as components not shown, are possible without departing from the spirit and scope of the present disclosure. Embodiments of the present disclosure have been described with the intent to be illustrative rather than restrictive. Alternative embodiments will become apparent to those skilled in the art that do not depart from its scope. A skilled artisan may develop alternative means of implementing the aforementioned improvements without departing from the scope of the present disclosure. It will be understood that certain features and subcombinations are of utility and may be employed without reference to other features and subcombinations and are contemplated within the scope of the claims. The invention is not limited to the illustrated exemplary embodiment but can instead be varied within the scope of protection of the enclosed claims.