Climbing formwork device for a shaft

Abstract

The invention relates to a climbing formwork device (10) for a shaft-shaped component, comprising a central formwork support device (12) which carries at least four formwork parts (16, 18) on its circumference, which can be arranged aligned next to each other to form an inner formwork, wherein the formwork support device (12) has a lifting device (34) to move opposing anchoring formwork parts (16) relative to the formwork support device (12) and relative to the other formwork parts (18) in the lifting direction, and wherein the formwork support device (12) is further configured to move all formwork parts (16, 18) between a retracted lifting position and a formwork position.The anchoring formwork parts (16) have at least two securing extensions (22a, 22b) projecting from the formwork plane of the formwork parts (16, 18) for vertically securing the climbing formwork device (10) in the already completed shaft wall, the securing extensions (22a, 22b) are spaced apart from each other in the direction of lifting by the stroke of the lifting device (34), and the distance between the securing extensions (22a, 22b) spaced apart in the direction of lifting is adjustable.

Description

[0001] The present invention relates to a climbing formwork system for one or more shafts. Up to now, formwork of any type has generally been erected and moved using cranes or hoists. Climbing formwork consists of scaffolding structures that support and secure concrete formwork, which are transported upwards as construction progresses. This allows building components, such as shafts (e.g., elevator or utility shafts), to grow upwards with the overall construction progress. However, the vertical transport of the climbing formwork using hoists or cranes and the attachment of the scaffolding to already completed concrete elements of the building under construction is time-consuming and labor-intensive. Current self-climbing formwork systems usually have a hydraulic drive and climb upwards along a pre-climbed guide rail, which requires the formwork to be retracted.Other solutions rely on transverse beams that rest in wall pockets with gravity latches, or on brackets anchored in the wall. These always require at least two such support structures, which alternately bear the loads during climbing and when the climbing mechanism is being pulled. All these solutions require material and labor for attachment to the structure, including the necessary preparations and ancillary work for setting up, anchoring, and adjusting the formwork. For larger anchors or wall pockets, repositioning the vertical reinforcement is necessary. The individual work and climbing steps have so far been either not automated or only partially automated.

[0002] The object of the invention is to create a self-climbing formwork device that enables the construction of a shaft, particularly a vertical one, with less personnel and in a shorter time than previously possible. Furthermore, the anchoring in the structure should be completely removable and as small as possible in its dimensions. As many work steps as possible should be automated without human intervention. This object is achieved by a climbing formwork device with the features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims. Advantageous embodiments of the invention are also described in the description and in the drawings.

[0003] According to the invention, the climbing formwork device has a central formwork support assembly which carries at least four formwork sections around its circumference. The formwork sections can be arranged next to each other in alignment around its circumference by means of the formwork support assembly, so that they form a closed inner formwork for the shaft. The formwork support assembly has a lifting device configured to move at least two spaced-apart, in particular at least two mutually opposed or diagonally opposite, anchoring formwork sections relative to the formwork support assembly and relative to the other formwork sections in the lifting direction. In the remainder of this description, the anchoring formwork sections will also be referred to synonymously as lifting elements. This makes it possible to transport the formwork support assembly upwards in the shaft by means of the lifting device.It should be noted 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 usually elongated.

[0004] At the start of a lifting operation, the movable formwork parts can be fixed in an already completed lower shaft section, which, at the bottom, is done by means of securing extensions that extend outwards from the formwork parts towards the concrete of the shaft.

[0005] Using the lifting device, the entire formwork support assembly can now be raised upwards, supported by the anchoring formwork components or lifting elements, preferably by a stroke length corresponding to the length of the formwork components, the height of the concreting section, or just a portion thereof. Once the formwork support assembly has been raised to its new, higher position, it is secured there, preferably again by means of securing projections that extend substantially transversely, and in particular perpendicularly, to the formwork components towards the concrete. These projections then engage in recesses in the concrete of an already completed lower shaft section. Alternatively, it is also possible for other projections to be provided on the formwork support assembly, which are supported by the upper edge of an already concreted shaft section or in recesses in the concrete wall.

[0006] Once the formwork support assembly, together with the formwork sections that cannot be moved in the lifting direction, has been raised into the new position—which typically extends upwards by approximately the length of the formwork sections into the area of ​​the shaft that has not yet been concreted—the at least two opposing anchoring formwork sections, which were previously used as supports for the lifting process, can be pulled into position from this point. This ensures that all formwork sections and the formwork support assembly are now in the new, raised position. Alternatively, it is also possible to slide the anchoring formwork sections into the higher position, fix them there, and then pull the entire formwork support assembly, along with the other formwork sections, into position.

[0007] The formwork support device is further designed to move all formwork parts transversely to the lifting direction for the lifting process, between a retracted lifting position in which they are arranged closer to the formwork support device and spaced away from the shaft walls, and for the concreting process in a formwork position further away from the formwork support device, in which the formwork parts form a closed inner formwork for concreting the shaft wall.

[0008] In the lifting position, the anchoring formwork components are spaced apart from the already completed shaft section and can be moved in the lifting direction without being obstructed by the completed shaft section or by completed reinforcement for the new shaft section. The formwork support structure will be moved into the new position by means of the lifting device after all the formwork components being moved have assumed their lifting position. Once the formwork support structure with the formwork components has been lifted into the new position and fixed there, the anchoring formwork components can be moved from their formwork position into the lifting position and then pulled upwards into the new position of the formwork support structure.Now the entire climbing formwork system is in the new position and can move all formwork parts into their formwork position, which allows the shaft to be concreted by another concreting section height.

[0009] The anchoring formwork components do not need to be exactly opposite each other. For example, in a round shaft, there can be six formwork components, with every other one acting as a lifting element. In this case, the movable formwork components are not facing away from each other but are positioned at a 120-degree angle to one another. However, for stability reasons, it is advisable that at least two of the anchoring formwork components are opposite each other. In a rectangular shaft, the corner formwork components located in the inside corners are preferably used as anchoring formwork components—that is, four in the case of a rectangular shaft. In this case, when the formwork support structure is raised using the lifting mechanism, all four corner formwork components can be used alternately for support.Of the four corner formwork sections, two opposing ones can then be pulled forward using the lifting device. Their locking projections are then used to fix the formwork support assembly in the raised position on the completed shaft section. Only then are the remaining two corner formwork sections pulled forward, at which point the entire climbing formwork assembly is in its new raised position.

[0010] The number and geometry of the formwork components must correspond to the geometry of the shaft. For example, a rectangular shaft might have corner formwork components with flat formwork components arranged between them, while a round shaft requires several, at least four, round formwork components arranged side-by-side around its circumference, all of which are round according to the geometry of the shaft to be formed.

[0011] The lifting mechanism can be an electrical device, such as a motor with a gear and rack, a design known per se for rack-and-pinion hoists. Hydraulic cylinders that move the formwork support structure in a single lift are also conceivable. Preferably, however, hydraulic cylinders with a ratchet mechanism are used as the lifting device, as they operate reliably in harsher construction site environments and can exert high forces. Generally, spindle drives are also conceivable as drive units.

[0012] In an advantageous embodiment of the invention, two spaced-apart formwork sections, in particular the anchoring formwork sections, have at least one securing extension extending transversely to the lifting direction for vertically fixing the climbing formwork device in the concrete of the already completed shaft wall. These securing extensions, mentioned above, protrude from the formwork section and thus engage in the concrete of the shaft to be cast or of the already completed shaft. In this way, the raised formwork support device can be securely fixed in its new raised position. As already explained above, such a securing extension can also be formed by an edge or a hinged latch that bears against the already cast part of the shaft.In its simplest form, the safety extension can also consist of an essentially horizontal profile on the formwork panel, which, however, has the disadvantage that the finished concrete wall would then also be profiled. The safety extensions, spaced apart from each other in the direction of lift, are adjustable in their spacing, making it possible to create concreting sections of varying lengths. If the formwork panels are length-adjustable, for example, by means of intermediate sections, this can also be taken into account. The adjustable spacing can be achieved in various ways, for example, by having one of the safety extensions adjustable on a rail running in the direction of lift, or by providing several spaced-apart attachment points in the direction of lift for at least one of the two safety extensions. Alternatively, intermediate sections can also be provided on the formwork panels to, for example,to adjust the mutual spacing of the safety projections arranged in the area of ​​the upper end and the lower end.

[0013] According to the invention, at least two locking projections spaced apart in the direction of lifting are formed on the formwork sections, which are spaced apart from each other, particularly on opposing formwork sections, and preferably on the anchoring formwork sections. The vertical distance between these two locking projections is adjustable either in increments or continuously to a concreting section height or a climbing height. Alternatively, a support for one locking projection, e.g., the anchoring formwork section, can be moved relative to the other locking projection by means of a carriage extending in the direction of lifting, which in particular carries the other locking projection, in order to adjust the mutual distance between the two formwork sections.

[0014] During the formation of the shaft, the upper retaining extension creates a recess in the poured concrete, shaped according to its form. After the concrete has hardened and the formwork support structure and formwork components have been lifted, the lower retaining extension engages in this recess. This allows the formwork support structure to be fixed in its new, raised vertical position.

[0015] In an advantageous embodiment of the invention, at least one of the two locking projections is adjustable between a locking position and a release position, wherein, in the locking position, its free end projects from the formwork plane of the associated formwork component into the concreting area of ​​the shaft wall to be formed, and in the release position, it is flush with the formwork plane of the associated formwork component or even recessed, or projects only to such an extent that it does not collide with the shaft wall when the lifting position of the formwork components is retracted during the lifting process. This has the advantage that the lifting element can be easily released from its fixed position in order to then be moved in a vertical direction.

[0016] The retaining extension is preferably tapered, e.g., pyramidal or conical, and in particular designed as a conical bolt whose diameter decreases towards its free end. This has the advantage that the retaining extension can be more easily withdrawn from its fixed position in the hardened concrete in order to release the associated formwork component for a vertical lifting movement. Inserting a cone into a corresponding recess in the hardened concrete is also easier.

[0017] It should be noted that the invention can be used in particular for vertical or inclined shafts. In principle, however, it is also possible to use the device according to the invention for horizontal shafts.

[0018] If a polygonal shaft is to be constructed, at least eight formwork elements are preferably held on the circumference of the formwork support structure, of which four are alternately designed as corner formwork elements and four as flat formwork elements. Depending on the size of the shaft, several flat formwork elements can also be arranged side by side, thus making it possible to realize any desired size and geometry of a rectangular shaft. In this case, the corner formwork elements are preferably designed as the anchoring formwork elements.Preferably, in the case of a square shaft, all four corner formwork parts are designed as anchoring formwork parts, which has the advantage that two opposing corner formwork parts can be used to horizontally secure the climbing formwork device, whereas the other two opposing corner formwork parts can be used to secure the climbing formwork device in its new position after lifting, preferably via the securing extensions.

[0019] In an advantageous embodiment of the invention, the formwork support device has a central support structure extending in the lifting direction, around the circumference of which actuators for each formwork element are arranged. These actuators are designed to move the formwork elements between the lifting position and the formwork position. In a climbing formwork device, in which, for example, several flat formwork elements are arranged side by side, several formwork elements can also be moved jointly by one actuator. Otherwise, the adjacent formwork elements are preferably moved between their lifting position and the formwork position by a separate actuator. The movement between the lifting position and the formwork position occurs with a directional component transverse to the lifting direction, typically transverse to the vertical direction, since the lifting direction is vertical in most shafts.

[0020] For movement between the lifting position and the formwork position, the formwork components can be connected to the supporting structure, for example, via at least two support arms spaced apart in the lifting direction, which are pivotable about an axis transverse to the lifting direction. This makes it possible to position the formwork components in either their formwork position or their lifting position. The actuator is designed, in particular, as a first hydraulic cylinder capable of both performing the pivoting movement and locking the formwork component in both the lifting and formwork positions. The advantage of a lifting cylinder over electric drives in construction operations lies in its greater insensitivity to the dirt and grime typically found on a construction site.

[0021] In an advantageous embodiment of the invention, each lifting element or anchoring formwork component is mounted on a slide extending in the lifting direction, the slide being movably connected to a slide carrier in the lifting direction. The slide carrier, in turn, is held on the supporting structure by at least two support arms spaced apart in the lifting direction, in the same manner as a formwork component, and can thus, driven by an actuator, in particular a first hydraulic cylinder, move the slide as well as the lifting element or anchoring formwork component connected to it between the lifting position and the formwork position. Other common drives, e.g., spindle drives, can also be used as actuators.

[0022] Preferably, an actuator of the lifting device is arranged between the carriage and the carriage support to move the carriage and the carriage support relative to each other in the lifting direction. The carriage preferably has approximately the length of a formwork panel in the lifting direction, making it possible to raise the climbing formwork device by approximately the length of the formwork panels during a single lifting operation. The actuator can preferably be formed by a second hydraulic cylinder, which is connected to the carriage support at its first end and whose second end has a ratchet mechanism with a first detent that engages a detent formed on the carriage. This has the advantage that the actuator can have a shorter stroke than the length of an entire lifting operation. Raising the formwork support device to the new raised position therefore does not have to be done in a single lifting operation.For example, if the length of the formwork components, and thus the length of a lifting operation, were approximately 3 m, a hydraulic cylinder with a 3 m stroke would be required. This is hardly feasible for reasons of space and cost. Therefore, a ratchet mechanism is used in conjunction with a detent on the carriage, allowing a lifting operation to be achieved through a series of small lifting cycles. Preferably, a second ratchet mechanism with a second detent is provided on the carriage carrier, which interacts with the detent on the carriage to secure the carriage's new position on the carriage carrier after a stroke of the actuator.For example, raising the formwork support unit can be achieved in five to ten actuator stroke cycles, with each stroke cycle raising the formwork support unit by 1 / 5 to 1 / 10 of the total stroke length. The actuator, particularly the second hydraulic cylinder, can therefore be built smaller, for example, with a length of less than 1 m. Furthermore, the detent of the carriage in conjunction with the ratchet mechanism has the advantage that the formwork support unit is securely held in its new position after each small stroke cycle by the detent pawl located on the carriage. Thus, if a sudden pressure loss occurs, the formwork support unit does not fall back to its original position along the entire stroke length, but remains engaged at the last detent, which, depending on the detent spacing, can be between 20 and 50 cm, for example.

[0023] Preferably, the two locking or ratchet mechanisms are switchable between two opposite directions of movement, which can be implemented, for example, by spring action or positive control. This has the advantage that the formwork support assembly can first be pushed upwards, supported by the carriage, and once the formwork support assembly has reached its new raised position, the ratchet mechanisms can be switched and the movable formwork support parts, previously used for securing, can be pulled into the new position of the formwork support assembly. The actuator can thus operate in both lifting and pulling motions.

[0024] Preferably, the central support structure is constructed in two parts in the lifting direction: a lower part in which the carriages and carriage supports, and preferably also support feet at the lower end, are arranged, and an upper part in which the formwork components are arranged. The lower part of the support structure is thus functionally optimized for supporting and moving the entire climbing formwork system within the shaft, while the upper part of the support structure, with the formwork components, has the primary function of forming the shaft, i.e., moving the formwork components into and out of the formwork position. Both parts are approximately the same length. The support foot has the advantage that the climbing formwork system can be set up on the floor of the structure at the beginning of shaft construction.As the climbing and vertical construction of the shaft progresses, the support feet are naturally no longer needed; the climbing formwork device is then supported by the securing extensions in the concrete of the already completed shaft wall.

[0025] Preferably, the sled is connected to the lower end of the movable formwork part, so that the entire assembly of sled and movable formwork part extends approximately over the entire length of the entire central support structure, with the movable formwork part being located at the upper end of the support structure and the sled in the lower part.

[0026] Preferably, the central support structure is divided into four quadrants perpendicular to the lifting direction, which can be connected to each other either directly or via intermediate sections. In this way, different shaft sizes and geometries can be realized, and the support structure can be adapted to the size of a shaft to be produced. The number of formwork components used can also be adjusted according to the size of the resulting support structure.

[0027] In an advantageous embodiment of the invention, the formwork components can be extended in length in the lifting direction by means of extension pieces, so that the climbing formwork device can be optimized for different shaft heights. Preferably, the lifting capacity of the climbing formwork device is designed for the maximum length of the formwork components. In this way, the lifting process can also be increased accordingly for longer formwork components.

[0028] Preferably, the actuators for moving the formwork components between their lifting position and their formwork position, as well as the actuator(s) of the lifting device, are formed by hydraulic cylinders, which are preferably controllable via a central control unit. If the safety extensions are movable, the corresponding drives for them are also preferably controllable via the central control unit. The control unit can either be located on the central support structure or connected via cables in a control cabinet. If the central control unit is connected to the formwork support structure, it preferably has a communication module for radio transmission in order to control the climbing formwork system with a wireless control device, e.g., from the ground.

[0029] Preferably, the climbing formwork device has a guide structure arranged with the supporting structure, preferably at its lower end, which is spaced apart from the securing projections in the lifting direction and 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 tipping during the lifting process. This results in increased operational safety of the climbing formwork device.

[0030] The invention has the advantage that the entire climbing formwork system can be operated by a single person, thus minimizing the labor required for constructing a concrete shaft. The climbing formwork system is particularly suitable for constructing very tall shafts, especially those exceeding 50 m, because it is precisely in longer shafts that the semi-automatic formwork setup and lifting described above demonstrates its greatest advantages and amortizes any additional costs.

[0031] The invention also relates to a method for operating a climbing formwork device according to one of the preceding claims, in which the climbing formwork device is placed on the floor of a shaft, whereupon the formwork parts are moved into their formwork position.

[0032] At the upper end of at least one of the movable formwork sections, a safety extension is extended, and the shaft is concreted according to the length of the formwork sections, provided that an outer formwork also exists for concreting the shaft. For a rectangular shaft, the movable formwork sections are preferably the corner formwork sections. All four corner formwork sections are left in their formwork position, while all other formwork sections are moved into their lifting position. The lifting mechanism then raises the formwork support assembly, together with the flat formwork sections, by the lifting length, which is slightly less than the length of the formwork sections. Two opposite corner formwork sections are then moved into their lifting position and subsequently pulled upwards by the lifting mechanism into the newly raised position.There, they are moved into their formwork position, in which their lower end rests against the already completed shaft section.

[0033] Now, the locking projections at the lower ends of the raised corner formwork sections are extended, allowing them to move into the recesses of the completed shaft section. These recesses were created by the locking projections at the upper ends of the movable formwork sections in their previous position. In this way, the two raised corner formwork sections are now secured in their new position within the formwork support system. Finally, the last two movable corner formwork sections, used for support, can be moved from their formwork position into the lifting position and pulled upwards, so that the entire climbing formwork system, with all its formwork sections, is now in its new position.

[0034] It is obvious to the person skilled in the art that all the embodiments of the invention described above can be combined with each other in any way, provided that features of different embodiments do not contradict each other.

[0035] The following terms are used synonymously: locking mechanism - ratchet mechanism; anchoring formwork part - lifting element; The invention is described below by way of example with reference to the schematic drawing. In this drawing: Fig. 1 a perspective view of the climbing formwork device according to the invention, Fig. 2 a top view of the climbing formwork device made of Fig. 1 , Fig. 2 leg top view of the climbing formwork device made of Fig. 1 In exploded view, divided into four separate quadrants, Fig. 3 shows a perspective view of a first quadrant of the climbing formwork device. Fig. 2b , Fig. 3-legged side view of a second quadrant of the climbing formwork device made of Fig. 2b , Fig. 4 an exploded view of one quadrant of the climbing formwork device made of Fig. 2b Fig. 5 a perspective view of the climbing formwork device at the beginning of a lifting operation with all formwork parts in formwork position, Fig. 6a and 6b side view of two adjacent quadrants of the climbing formwork device in the position according to Fig. 5 Fig. 7 a perspective view of the climbing formwork device after lifting the formwork support device and the non-movable formwork parts, Fig. 8 a side 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 after the first two corner formwork sections have been pulled into the raised position of the formwork support device. Figs. 10a and 10b show a side view of two adjacent quadrants of the climbing formwork device in the position shown. Fig. 9 Fig. 11 shows a perspective view of the climbing formwork device after completion of the lifting process, with the corner formwork sections in the formwork position and the flat formwork sections in the lifting position. Figs. 12a and 12b show side views of two adjacent quadrants of the climbing formwork device in the position of Fig. 11 Fig. 13 shows a vertical section of the climbing formwork device according to the invention, Figs. 14a and 14b show a detailed representation of the lifting device of the climbing formwork device. Fig. 13 , and Fig. 15a and 15legs perspective view of the climbing formwork device when inserting intermediate parts to extend the formwork parts.

[0036] Fig. 1 Figure 1 shows a climbing formwork device 10 with a formwork support assembly 12 divided into four quadrants 16a to 16d transversely to the lifting direction H, which has four corner formwork sections 16 and eight flat formwork sections 18 around its circumference. The corner formwork sections 16 are mounted at their lower ends on elongated carriages 20, which extend downwards from the corner formwork sections 16 in the lifting direction H. The units consisting of corner formwork sections 16 and the carriages 20 connected to them each have two upper securing projections 22a and two lower securing projections 22b spaced apart in the lifting direction H, the distance L between which in the lifting direction H corresponds approximately to the length I of the formwork elements 16, 18. The formwork support assembly 12 has a central support structure 24, which consists of four quadrants 26a-26d, each with a base 28 at its lower end.The formwork parts 16, 18 are attached to the central supporting structure 24 via actuators 30, which will be described in more detail later, between the formwork position of the formwork parts 16, 18 shown in the figure and a lifting position (. Fig. 9 ) adjustable, in which the formwork parts 16, 18 are set back closer to the central support structure 24 and can thus be moved within an already completed shaft section in the lifting direction H.

[0037] Fig. 2a The overhead view shows the climbing formwork device according to Fig. 1 from above, where the securing extensions 22a and the subdivision of the climbing formwork device 10 into quadrants 14a to 14d are clearly visible, which in Fig. 2b as becomes even clearer in the exploded view. The central supporting structure 24 is also subdivided into quadrants 26a to 26d according to the subdivision of the climbing formwork device. The quadrants 26a-26d can either be, as shown in Fig. 2a shown, they can be directly connected to each other or via (not shown) intermediate parts, which allows any rectangular geometries of the climbing formwork device 10 to be realized for any shaft cross-sections.

[0038] The Fig. 3a und 3b Figure 1 shows the attachment of the formwork sections 16, 18 to the central support structure 24, or to its quadrants 26d and 26c, respectively. The flat formwork sections 18 are each suspended from the central support structure 24 by means of two first support arms 32a. The first support arms 32a are pivotable about pivot axes perpendicular to the lifting direction H, with the pivot position of the support arms 32a being set by a first actuator 30a. In this way, by actuating the first actuators 30a, the flat formwork sections 18 can be moved into the formwork position shown or into a lifting position in which they are spaced away from the shaft wall and can thus be moved in the lifting direction H by means of a lifting device described later.

[0039] The corner formwork sections 16 are held on the carriages 20. The carriages 20, in turn, are movably held on a carriage support 36 between their lifting position and formwork position. The carriage support 36 is articulated to the central support structure 24, or to the corresponding quadrant 26, via two secondary support arms 32b. The pivot position of the secondary support arms 32b can be adjusted via secondary actuators 30b, so that the corner formwork sections 16 can also be moved between the formwork position shown and a lifting position located closer to the central support structure 24 by means of the carriages 20 and carriage support 36.

[0040] Sled 20 is via a in Fig. 4 The lifting device 34, shown in more detail, is movable relative to the slide carrier 36 in the lifting direction. Fig. 4 Figure 1 shows an exploded view of quadrant 14d of the climbing formwork device 10 and, correspondingly, a quadrant 26d of the central support structure 24. The lifting device 34 consists of the carriage carrier 36, on which the carriage 20 is slidably held in the lifting direction H. The carriage carrier 36 is articulated to the associated quadrant 26d of the central support structure 24 via the two spaced-apart second support arms 32b and is adjustable via the second actuator 30b, in particular a hydraulic cylinder, between a formwork position further away from the quadrant 26d of the support structure 24 and a lifting position closer to the quadrant 26d of the support structure 24.

[0041] The lifting device 34 includes an actuator 38 in the form of a second hydraulic cylinder extending along the slide carrier 36 in the lifting direction H, at whose free end 40 (see Fig. 14a und 14b A first pawl 42 of a first ratchet mechanism is arranged. A second pawl 46 of a second ratchet mechanism is arranged directly on the slide carrier 36. The two pawls 42 and 46 interact with a detent 50 formed on the slide 20 and the corner formwork part 16. By actuating the actuator 38, the first pawl 42, located at its free end 40, is moved in the stroke direction H, engaging the detent 50 and thereby moving the slide 20 and the corner formwork part 16 connected to it relative to the slide carrier 36. The second pawl 46, located directly on the slide carrier 36, then engages the detent 50 in the new position.The actuator 38 can now be returned to its retracted position and actuated again to perform the relative movement between the slide carrier 36 and the slide 20 once more, with the new position again being secured by the second detent 46. The two detent 42 and 46 are reversible in their direction of action, thus allowing relative movement between the slide carrier 36 and the slide 20 in both directions.

[0042] The lifting device 34 can thus be used to move the formwork support assembly 12 upwards relative to the carriage 20. Once the lifting operation is complete and the formwork support assembly 12 is in the raised position, the two locking pawls 42, 46 are switched, so that the carriage 20 is now pulled upwards relative to the formwork support assembly 12. In this way, the two corner formwork sections 16 used for support, along with their associated carriages 20, are also pulled into the new raised position of the climbing formwork assembly 10. The actuator 38, which is designed as a second hydraulic cylinder, thus operates under both tension and compression forces.

[0043] Fig. 5 Figure 1 shows the climbing formwork device 10 at the beginning of a climbing or lifting operation. The formwork components 16 and 18 are all in their formwork position, in which they form the inner formwork of the shaft while the concrete hardens. The corresponding side views of two quadrants of the climbing formwork device 10 are shown in the Fig. 6a und 6b shown.

[0044] In Fig. 7 The flat formwork sections 18 are in their lifting position. In this position, they could be moved together with the formwork support device 12 in the lifting direction to the raised position shown. The four carriages 20 with the associated corner formwork sections 16 remain in the formwork position and serve to anchor the climbing formwork device 10 in the set concrete of the shaft by means of the upper securing extensions 22a. The corresponding side view of a supporting quadrant 14d of the climbing formwork device 10 is shown in Fig. 8 depicted.

[0045] According to Fig. 9 Two opposing sleds 20 with the associated corner formwork parts 16 are now moved upwards by means of the lifting device 34 and subsequently moved into their illustrated formwork position, whereby their lower securing extensions 22b engage in the recesses of the set concrete, which in the previous position according to Fig. 5 formed by the upper securing extensions 22a. In this way, the position of the formwork support device 12 in the new position is secured by the two opposite corner formwork parts 16. The corresponding views of adjacent quadrants 14c, 14d of the climbing formwork device 10 are shown in the Fig. 10a und 10b described, whereby Fig. 10a the representation of a still supporting corner formwork part 16 and Fig. 10b The already raised fixing position of one of the other two raised corner formwork parts 16 is shown.

[0046] Now, the two corner formwork sections 16, which remain in their original lower position, are pulled upwards together with their slides 20 by means of the lifting device 34 and moved into the position by means of the second actuators 30b. Fig. 11 The formwork is moved to the depicted position. The entire climbing formwork device 10 is now secured in the set concrete via the corner formwork sections 16a-16d, in particular via their lower locking projections 22b. It should be added that the locking projections 22a,b are adjustable between the depicted protruding fixing position and a retracted position flush with the plane of the corner formwork sections 16, so that the corner formwork sections 16 can be more easily released from a secured position or moved into a secured position by actuating the locking projections.

[0047] The position of Fig. 11 The corresponding side views of two adjacent quadrants 14c,d of the climbing formwork device 10 are shown in the Fig. 12a und 12b The flat formwork sections 18 are still in their lifting position and are then moved into their formwork position, whereby the entire climbing formwork device returns to the position shown. Fig. 5 The initial state shown is present. From there, a new lifting process can begin following this pattern.

[0048] Fig. 13 shows a vertical section of the climbing formwork device made of Fig. 1 The design of the sled carriers 36, the sleds 20, and the actuators 38 of the lifting device 34 is clearly visible here. The first and second actuating elements 30a, 30b, the actuators 36 of the lifting device 34, as well as the locking bolts 22a, 22b, can be operated by means of a hydraulic control 52, which has a wireless communication module for communicating with a radio controller 54 of the control unit 52. An operator can thus control the entire operation of the climbing formwork device 10 from the ground.

[0049] The Fig. 14a und b The operation of the lifting device 34 with the second hydraulic cylinder 38 as actuator of the lifting device 34 is shown, firstly, in Fig. 14a in the retracted position of the second hydraulic cylinder 38 and in Fig. 14b in the extended position. The thrust actuation of the carriage 20 or the corner formwork section 16 is effected via a first detent 42, which is connected to the free end 40 of the second hydraulic cylinder 38 or is arranged on a support element connected thereto. The first detent 42 is moved by the second hydraulic cylinder 38 as it engages the detent 50 of the carriage 10 or the corner formwork section 16. In doing so, it displaces the carriage 20 or the corner formwork section 16 relative to the carriage support 36 and thus also relative to the formwork support assembly 12 and its central support structure 24 in the stroke direction H.The advanced position is then secured by the second locking pawl 46 connected to the slide carrier 36, so that in this way the slide 20 can be moved relative to the slide carrier 36 in several smaller stroke steps according to the length of the second hydraulic cylinder 38, until the total stroke of the climbing formwork device 12 is reached, which corresponds approximately to the length l of the formwork parts 16, 18.

[0050] The Fig. 15a und 15b This shows that the length of the formwork sections 16, 18 can be increased by first shorter intermediate sections 56 and second longer intermediate sections 58, resulting in different final lengths l1 and l2 of the formwork sections and thus a variable length of the inner formwork for the shaft. It is essential that the formwork sections 16, 18 are designed in two parts in the lifting direction H, forming a base formwork 55 and a formwork crown 57 attached to its upper surface. The intermediate sections 56, 58 are inserted between these two to extend the formwork sections 16, 18. The formwork crown 57 must always remain at the upper end of the formwork because the upper safety extensions 22a, possibly with associated drives, are located there.The figures also show at the lower end of the supporting structure 24 a guide structure 60 consisting on each side of a holder running horizontally towards the shaft wall with two running wheels which are supported on the already formed shaft wall in order to protect the climbing formwork device from any tilting movement.

[0051] The invention is not limited to the illustrated embodiment, but can instead be varied within the scope of protection of the attached claims. Bezugszeichenliste:

[0052] 10 Climbing formwork device 12 Formwork support device 14a-d Quadrants of the climbing formwork device 16 Corner formwork parts - Anchoring formwork parts - Lifting elements 18 Planar formwork parts arranged between the corner formwork parts 20 Slides to which the corner formwork parts are attached / arranged 22a,b Safety extensions, preferably extendable 24 Central support structure 26a-d Quadrants of the central support structure 28 Base at the lower end of the central support structure - Trailing platform 30a, Second actuators - First hydraulic cylinders 32a,b Swiveling support arms for attaching the formwork parts between the lifting position and the formwork position 34 Lifting device 36 Slide support 38 Actuator of the lifting device - Second hydraulic cylinder 40 Free end of the actuator - Support elementwhich is connected to the free end of the actuator 42 first locking pawl at the free end of the actuator 46 second locking pawl on the carriage carrier 50 locking mechanism on the carriage / corner formwork part for interaction with the locking pawls 52 central control of the climbing formwork device 54 wireless operating device for the central control 56 shorter intermediate parts 58 longer intermediate parts 60 guide structure on each side at the lower end of the central support structure, in particular a holder with two rollers for support against the shaft wall,

Claims

1. Climbing formwork device (10) for a shaft-shaped component, comprising a central formwork support device (12) which carries at least four formwork parts (16, 18) on its circumference, which can be arranged flush next to each other by means of the formwork support device (12) to form a closed inner formwork for the shaft, wherein the formwork support device (12) has a lifting device (34) to move at least two opposing anchoring formwork parts (16) relative to the formwork support device (12) and relative to the other formwork parts (18) in the lifting direction, and wherein the formwork support device (12) is further configured to move all formwork parts (16, 18) between a retracted lifting position, in which they are movable in the shaft in the lifting direction, and a formwork position in which they form the inner formwork, characterized by the fact thatthe anchoring formwork parts (16) have at least two securing extensions (22a, 22b) projecting from the formwork plane of the formwork parts (16, 18) for vertically securing the climbing formwork device (10) in the concrete of the already completed shaft wall, that the at least two securing extensions (22a, 22b) are spaced apart from each other in the direction of lifting by the stroke of the lifting device (34), and that the distance between the securing extensions (22a, 22b) spaced apart in the direction of lifting is adjustable.

2. Climbing formwork device (10) according to claim 1, characterized by the fact thatat least the forward safety extension (22a, 22b) in the direction of lifting is adjustable between a locking position and a release position, wherein its free end protrudes from the formwork plane of the associated formwork part (16, 18) in the locking position and is aligned with the formwork plane of the associated formwork part (16, 18) in the release position or is set back relative to it in the direction of the central formwork support device (12) or protrudes only to such an extent that it does not collide with the shaft wall when the formwork parts are in the retracted lifting position during the lifting process.

3. Climbing formwork device (10) according to claim 1 or 2, characterized by the fact that the at least two locking projections (22a, 22b) are tapered, in particular designed as a conical bolt or pin, in particular with a diameter between 80 and 100 mm and in particular with a length between 100 and 150 mm.

4. Climbing formwork device (10) according to one of the preceding claims for a rectangular shaft, characterized by the fact that it has at least eight formwork parts (16, 18) over its circumference, of which four are designed as corner formwork parts (16) and at least four as flat formwork parts (18), and that the corner formwork parts (16) form the anchoring formwork parts.

5. Climbing formwork device (10) according to one of the preceding claims, characterized by the fact that the formwork support device (12) has a central support structure extending in the lifting direction, on the circumference of which actuators (30a, 30b) for the formwork parts (16, 18), in particular for each formwork part, are arranged, which are designed to move the formwork parts (16, 18) between the lifting position and the formwork position.

6. Climbing formwork device (10) according to claim 5, wherein the formwork parts (16, 18) are connected to the support structure (24) via at least two spaced-apart support arms (32a, 32b) which are pivotable about an axis transverse to the lifting direction in order to move the formwork part (16, 18) between the lifting position and the formwork position, wherein the actuating element (30a, 30b), in particular a first hydraulic cylinder or spindle drive, is designed to perform the pivoting movement.

7. Climbing formwork device (10) according to claim 6, characterized by the fact thatEach anchoring formwork part (16) is mounted on a slide (20) extending in the lifting direction, such that the slide (20) is movably connected in the lifting direction to a slide carrier (36) which is connected to the support structure (24) via at least two support arms (32a, 32b) spaced apart from each other and pivotable about an axis transverse to the lifting direction and is held on the support structure (24) movably between the lifting position and the formwork position by means of the actuating element (30a, 30b).

8. Climbing formwork device (10) according to claim 7, characterized by , and that an actuator (38) of the lifting device (34) is arranged between the carriage (20) and the carriage carrier (36) to move the carriage (20) and the carriage carrier (36) relative to each other in the lifting direction.

9. Climbing formwork device (10) according to claim 8, characterized by the fact thatthe actuator (38), in particular a second hydraulic cylinder, is connected at its first end to the slide carrier (36), and that the second end of the actuator (38) has a detent mechanism with a first detent pawl (42) which engages with a detent (50) formed on the slide (20).

10. Climbing formwork device (10) according to claim 9, wherein a second locking mechanism with a second locking pawl (46) is formed on the slide carrier (36), which interacts with the locking (50) of the slide (20) to secure the new position of the slide (20) on the slide carrier (36) after a stroke of the second hydraulic cylinder (38).

11. Climbing formwork device (10) according to claim 10, wherein the ratchet mechanisms with the first and second locking pawl (42, 46) are switchable between two opposite directions of movement.

12. Climbing formwork device (10) according to one of claims 7 to 11, characterized by the fact thatthe central support structure (24) is constructed in two parts in the lifting direction, with a lower part in which the slides (20) and the slide supports (36) and preferably also support feet (28) are arranged at the lower end and with an upper part in which the formwork parts (16, 18) are arranged.

13. Climbing formwork device (10) according to one of claims 7 to 12, characterized by the fact that the sled (20) is connected to the lower end of the anchoring formwork part (16).

14. Climbing formwork device (10) according to one of claims 5 to 13, characterized by the fact that the formwork support device (12), in particular the central support structure (24), is divided transversely to the lifting direction into four quadrants (14a-d, 26a-d) which can be connected directly or via intermediate parts.

15. Climbing formwork device (10) according to one of the preceding claims, characterized by the fact thatthe formwork parts (16, 18) can be extended in length in the lifting direction by intermediate parts (56, 58).

16. Climbing formwork device (10) according to one of the preceding claims, characterized by the fact that it has a central control unit (52), in particular for the lifting device (34), for the actuators (30a, 30b) and for the adjustable safety extensions (22a, 22b), which preferably has a communication module for a wireless connection with an operating unit (54).

17. Climbing formwork device (10) according to claim 16, characterized by the fact that the central control unit (52) is connected to sensors which provide information to the control unit about the movement and / or position of the climbing formwork device in the shaft or about the current operating state of the climbing formwork device.

18. Climbing formwork device (10) according to one of the preceding claims, characterized by the fact thatit has a guide structure (56) connected to the formwork support device (12) or to the support structure (48), which is spaced apart in the lifting direction from the securing extensions (22b), and, preferably via adjustable pressure rollers, rests against the inside of the already completed shaft wall in order to secure the climbing formwork device (10) against tipping during the lifting process.

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