WO2020064423A1 - Climbing unit for a formwork scaffolding - Google Patents

Abstract

The invention relates to a climbing unit for a formwork scaffolding (10) for supporting a formwork element for a concrete wall formwork, by means of which climbing unit the formwork scaffolding is displaceable in a height-variable manner at existing structural wall portions (12). The formwork scaffolding has at least one working bracket (14) supporting the formwork element and has at least one climbing bracket (16) provided with a linear drive (18), the drive of which can bring about a relative movement between the climbing bracket(16) and the working bracket (14), wherein a pole (22) fixed to one of the brackets (14, 16) is provided and connects the working bracket (14) to the climbing bracket (16) and specifies the maximum distance between the two brackets. The pole (22) is then moved via a toothed rack configuration (23) relative to the linear drive (18), which is in the form of a toothed gearing.

Description

 CLIMBING DEVICE FOR SHUTTERING SCAFFOLDING

The invention relates to a formwork scaffold provided with a climbing device, which serves as a working platform and for supporting a formwork element for a concrete wall formwork. Such climbing systems are used in construction e.g. used for the production of building walls, bridges, dams, shafts and the like buildings.

In the climbing system also known as climbing formwork, climbing scaffold or climbing protection wall, the scaffolding is successively displaced upwards via mounting rails attached vertically to already solidified wall sections of the building. During a phase in which the scaffolding is to be displaced on it, the mounting rail is locked to several anchors or so-called climbing shoes which are fixed to the wall and which were previously introduced here when casting structural sections.

A connection between the mounting rail and the scaffold is in turn made by means of climbing heads on which latch levers sit, which allow a relative displacement in a desired direction (up or down), but act in the opposite direction as locking cams.

If you want to lift the scaffolding or the rails from a lower concrete wall section to a further section of the building that has just hardened above it for fixing there, a lifting drive is used, as described, for example, in the published patent application DE 10 201 6 205 956 A1 or the international publication WO 2009/1 1 7986 A1 in the form of a hydraulic cylinder. As a result, the climbing rail can be shifted upwards via the hydraulic cylinder supported on a climbing shoe and then anchored to an upper climbing shoe in order to subsequently lift the scaffold upwards via a support on the rail.

For the rest, DE 43 02 1 97 A1 shows a self-climbing device for a climbing frame with a linear drive, which generates a relative movement between a sliding bracket of the frame and a mounting rail - which device is shown in the prior art in FIG. 1 of the present application. This relative lifting movement has to be carried out several times from a first position of the scaffolding to the next higher one, because a single linear lifting distance is predetermined by the stroke length of the linear drive and this is always smaller than the distance between the fixing points for the temporarily final ones Scaffold positions:

To lift the climbing frame, the attachment of the transport rail 6 is first released from the scaffolding or climbing shoes 4 and 5, whereas the working platform 8 remains fixed in the climbing shoe 5 - see in particular Fig. 1 for understanding this method. If the hydraulic cylinder 1 3 is now actuated, a climbing head 14 fastened to the lower end of the lifting rod 1 6, which engages in the mounting rail 6, is pushed together with the latter as far as the stroke of the hydraulic cylinder 1 3 permits. The rail 6 slides through the climbing head 1 5 with the pawl released, while a locking member in the lower climbing head 14 grips the rail and takes it upwards. Then the mounting rail 6 is fastened again in the climbing shoes at several spaced-apart anchor points and the lifting rod is extended again, so that this time the scaffold is supported by the lifting rod on the mounting rail by the same stroke length upwards to lift. This work cycle repeats itself until the mounting rail is raised by a concreting section and is fastened several times in fastening anchors arranged further up in the wall. With a 3 m high concrete section and a stroke of the hydraulic cylinder of 60 cm, this work cycle is repeated 5 times - which is time-consuming and complicated.

The aim of the present invention is to simplify the climbing process.

This is solved by a climbing device according to claim 1, or by a work scaffold as formwork scaffold according to claim 8. Advantageous embodiments emerge from the respective subclaims.

The main idea of the invention is to present a solution according to which the successive lifting steps described above are carried out by a continuous, i.e. single lifting step between two anchor positions for the scaffold are replaced.

For this purpose, the formwork scaffold has at least two brackets, more precisely, at least one working bracket (ACS-C working bracket) carrying a formwork element and at least one climbing bracket (ACS-C climbing bracket) trailing in the upward climbing direction. Each of the brackets can be individually anchored locally to and removed from a building wall. Furthermore, a linear motor is installed on one of the two brackets, whereas a post is then fixed on the other remaining bracket, via which a guided and thus defined relative movement between the brackets can be carried out. The length of the post specifies the lifting height of the relative movement between the brackets - a relative movement that can be carried out continuously, ie without interruption, in one process step. In other words, the first console climbs on the post along the other console. This movement can be up or down.

As a result, the post takes over the function of the climbing rail known in the prior art. The post is available in the form and shape of a rail as a tube, I-profile, U-profile, L-profile or T-profile. Since the upright is fixed to one of the brackets in its lower area, a truss can advantageously be present at the upper end of the upright, with which the upright can be suspended from existing structural parts. In the simplest case, the truss consists of traverses running in the horizontal direction, which can be placed on the uppermost section of the structure.

The above relative movement is realized in that an output gear of the linear drive engages in a rack configuration implemented on the upright. The rack can be welded to the upright. This has the advantage that the upright itself is not weakened by material removal. However, if such a weakening due to material removal is taken into account in the dimensioning of the post by selecting its wall thickness in advance, the tooth geometry can also be introduced into the post itself. A rack can be lasered, punched or stamped into the post. This design has the advantage of simple manufacture of the post with a desired rack geometry.

According to an advantageous embodiment, the linear drive has output gears which are arranged in pairs with respect to one another and which act on opposite sides of the gear rack configuration. For this purpose, the term “rack configuration” means a respective rack at two positions of the upright. According to a further advantageous embodiment, the linear drive is designed to be self-locking. This means that the linear drive itself can inhibit a shift between the brackets and the gear (s) engaging the rack of the upright blocks / block a relative movement.

The linear motor used for the linear drive can be driven electrically or hydraulically. Compared to known climbing drives, even when using a hydraulic drive, there is still less oil volume used - with an electric drive, the use of hydraulic oil is completely eliminated.

The synchronization of the motor is easy to monitor and regulate with digital speed encoders. This results in simple control and adjustment of the lifting height.

The lifting height can be increased as required by multiple installation of modular gear drives. The gear modules are then either electrically or hydraulically connected so that the individual gears are driven with the same torque.

The core idea of the invention can be implemented in two different variants (see also the following description of the drawings attached to both variants, from which the respective mode of operation is explained with individual work steps): i) According to a first variant, when using the formwork scaffold, the the lower climbing console - opposite the upper working console, which carries the formwork element. The upright is fixed to the upper work console, and the upright projects downward from below according to its length defining the desired lifting height Working console. The minimum length of the post beyond the upper work console is determined by the height of a section of the building. ii) According to the second variant, when using the formwork scaffold, the console provided with the linear drive is the upper work console, which in turn carries the formwork element. The post is fixed to the lower climbing console here, and the post only protrudes upwards over the climbing console according to its length, which defines the desired lifting height.

According to an advantageous embodiment of the second variant, the upper climbing console has a tunnel tube with which the formwork element is carried and in which the post can also be moved. The shape of the tunnel tube should advantageously be complementary to the post. This embodiment with a tunnel tube has the advantage that the total length of the post can be divided into two sections between the post itself and the tunnel tube at the maximum distance between the brackets. Because one has to take into account that the formwork element still has to protrude upwards over a working height compared to the last manufactured concrete wall section if liquid concrete has to be poured onto it to form the closest wall part. This section of the working height is then realized by the tunnel tube to which the formwork element is fixed (see Fig. 4 & 5 for understanding).

Details of the invention are described below using two exemplary embodiments in conjunction with the accompanying drawing figures.

Show in these

 Fig. 1 is a formwork with climbing system according to the state of the

Technology, 2 the formwork scaffold according to the invention with the climbing device according to the invention in an embodiment according to the above first variant i),

 3 shows a perspective view of the formwork scaffold from FIG. 2 with a detailed view of the linear drive of the climbing device according to the invention,

 Fig. 4, the formwork scaffold according to the invention in an embodiment according to the above second variant ii), and

 5 shows a perspective view of the formwork scaffold from FIG. 4 with a detailed view of the linear drive.

The formwork framework shown in FIG. 1 from the prior art from DE 43 02 1 97 A1 is discussed in the introduction to the description above.

Compared to this, the formwork scaffold illustrated in FIG. 2 shows a new way of climbing. It relates to an embodiment according to a first variant of the subject matter of the invention, as is defined under section i) above on page 5 of the description.

This embodiment shows a double-sided formwork scaffold (see illustration on the right in FIG. 2, each with two work consoles 14 and two climbing brackets 16 and two uprights 22 for a single formwork scaffold. Of course, one formwork scaffold can deviate from this number and both several of these components and only one have individual components from the work console, climbing console and upright.

For the sake of simplicity, the method of operation is described below on a single assembly consisting of a single work console and climbing console with upright: The formwork scaffold 10 of a single assembly has an upper work console 14 and a climbing console 16 located underneath. The work console is defined by carrying the formwork element, which is a common element and is therefore not shown in the figures. In the present case, the formwork element can also be mounted on the cross member 11.

Both brackets are in their working position on a building wall 12 from previously concreted sections. However, it is not necessary for both brackets 14, 16 of this one assembly to be anchored to the building wall 12 at the same time. This can apply to a phase in which the entire formwork framework 10 has to remain static during the casting of a concrete wall section. For this period, anchoring all brackets on all sides increases the stability of the formwork scaffold on the wall.

On the upper work console 14, a post 22 is fixed in place. The post 22 extends over a long length, i. H. beyond the upper work console 14 upwards in order to be able to carry the traverse 11 up to the last concreting section to be manufactured or to be manufactured; And below the work console 14 downwards in a length that is greater than the distance of a concreting section for the next building section. This length is made up of a minimum distance between the upper work console plus the distance to the lower climbing console plus a length that corresponds to the vertical distance of a next section of the structure. This is because the climbing bracket 16 must be able to raise the working bracket 14 with its upright 22 by exactly the distance of a building section in a continuous working step.

The post 22 has a rack configuration 23 over at least this length of a structural section. According to this configuration, opposing tooth spaces are incorporated in the post. While one looks at one of these racks in the left-hand side of FIG. 2, one can see from the right-hand illustration that where the two gears 20 of a linear drive 18 on the lower climbing bracket 1 6 engage the upright, there is a rack recess on both sides . In the example shown, it is part of the upright 22, which is selected in a tubular embodiment.

The aforementioned linear drive 18 is installed on the lower climbing bracket 16, which in the example shown here comprises two motors, each with two gear wheels 20. Both gearwheels engage in a respective rack configuration 23 of the upright. The linear drive on the lower climbing bracket is thus able to move the post upwards over the lower section shown in the picture from the gearwheels 20 over the remaining distance of the post to its lower end. This distance should at least correspond to the height of the next section of the building. Because the upright 22 is firmly connected to the upper work console 14, the work console 14 is also moved upward as soon as the linear drive 18 is actuated. Then, when the lower end of the post 22 reaches the area of the gear wheels 20 - that is, the post 22 has been moved over the working distance - the work console 14 is then the uppermost section of the building wall 12 and can be anchored there. The next section of the building can then be concreted by anchoring all the brackets.

In a subsequent step, the climbing console now has to be pulled up towards the work console. This is done with a work console 14 anchored to the existing building wall. In addition, the formwork scaffold is supported on the top section of the building via the cross member 11. If the climbing bracket 1 6 is now detached from its anchoring, it can move upwards automatically on the post 22 by means of the linear drive (18) until the working console 14 is reached. A situation then arises as shown in FIG. 2: The work console 14 is located at a minimal distance from the climbing console 1 6. The above steps can be repeated as required to manufacture the building wall 12 as desired.

Fig. 3 shows the version shown in Fig. 2 in perspective view with a detail of the lower climbing bracket 1 6. In this detail, the motor of the linear drive 18 is shown enlarged how it can move the gear 20 with a worm gear. The latter engages in the rack configuration 23, as it faces the viewer. A second linear motor 18, which is operated in analog and synchronous fashion, is located on the opposite side of the post 22, mirror-symmetrical to this arrangement. The gear 20 is held on the climbing console 1 6 in a gear holder 21.

FIG. 4 shows a further embodiment of a second version of the invention as defined under section ii) on page 6 above. Here, too, the formwork scaffold consists of two symmetrical units, each with a work console and a climbing console. Here, too, of course, a formwork scaffold can deviate from this number and have several of these components as well as only a single component consisting of a work console, climbing console and post.

In the following, reference will again be made to an individual unit for explanation of the mode of operation of this embodiment:

In this version too, the work console 14 carrying a formwork element (not shown) is the upper console. And the linear drive 18 is also installed here. In contrast, the lower climbing bracket 1 6 carries the post 22 with the rack configuration 23. The post 22 in this version is held so that it can move in a tunnel tube 24, which tunnel tube 24 is firmly fixed to the upper work console 14 - to which tunnel tube the formwork element is also attached. The tunnel tube 24 points to the placements of the gears 20 of the linear drive 18 has a respective window through which the respective gear can reach. This is necessary so that a respective gear wheel of the drive can interact with the rack configuration 23 of the post 22 through said window.

If the formwork frame 10 is now to be continuously raised from the position shown in FIG. 4 for the manufacture of a next concreting step, the work console 14 will be supported on the rack configuration 23 of the upright by actuating the linear drive 18 and with the turning of the gear wheels 20 with the climbing bracket 1 anchored 6 up in a single step, ie proceed continuously. When the upper work console 14 reaches the final work position required for this, the pouring process for concreting can be started after the work console 14 is anchored to the building wall 12. The climbing bracket 1 6 is subsequently to be released from the anchoring on the building wall 12, the climbing bracket 1 6 together with its upright 22 being able to be pulled upwards by actuating the linear drive 18. This tightening also takes place in a continuous work step. Here, the formwork scaffolding is additionally supported on the solidified upper section of the structure via the crossbar 11.

Compared to the version i) shown in FIGS. 2 and 3, the upright 22 according to the version ii) shown in FIGS. 4 and 5 does not have to be of this length. This is because the outer tunnel tube 24 complements the length of the upright 22. Thus, the upper work console 14 always carries the formwork element 11 in a spaced-apart state due to the tunnel tube 24. This length does not have to be taken over by the upright 22 - which, however, is necessary in the version 1 embodiment.

FIG. 5 shows the embodiment from FIG. 4 in a perspective view with a detail on the work console 14, namely again the drive 18. In the detail, one can clearly see how the gearwheel 20 through the window of the tunnel tube 24 passes through to engage the rack configuration 23 of the post 22. Details of the linear drive 18 are identical to the drive shown in FIG. 3.

Reference number list:

1 0 formwork scaffold

1 1 truss

 1 2 Building wall section

14 work console

1 6 climbing console

18 linear actuator

20 gear

 21 gear holder

22 uprights

 23 Rack configuration

 24 tunnel tube

Claims

Expectations 1 . Climbing device, in particular for a concrete wall formwork, the climbing device being adjustable in height on existing building wall sections (12), which climbing device has at least one work console (14) and at least one climbing bracket (1 6) provided with a linear drive (18), by the drive thereof a relative movement between the climbing console (1 6) and the work console (14) can be realized, a post (22) fixed to one of the consoles (14, 1 6) being provided, which supports the work console (14) with the climbing console (1 6 ) connects and specifies the maximum distance between the two brackets, which post (22) is moved via a rack configuration (23) relative to the linear drive (18), which is designed as a gear transmission. 2. climbing device according to claim 1, characterized in that the upright (22) has a truss (1 1) which can be fixed at its upper end and by means of which the upright can be suspended from an existing structural wall section (12). 3. climbing device according to claim 1 or 2, characterized in that the linear drive (18) is designed to be self-locking. 4. Climbing device according to one of the preceding claims, characterized in that the linear drive (18) has output gears (20) which are arranged in pairs and which act on opposite sides of the rack configuration (23). 5. Climbing device according to one of the preceding claims 1 to 4, characterized in that the linear drive (18) is installed on the lower climbing bracket (1 6) when using the climbing device, whereas on the then upper working console (14) the upright (22) is fixed. 6. Climbing device according to one of the preceding claims 1 to 4, characterized in that the linear drive (18) is installed on the upper work console (14) when using the formwork scaffold, whereas the post (22) is fixed to the then lower climbing console (16) is. 7. climbing device according to claim 6, characterized in that the work console (14) has a tunnel tube (24) running in the direction of travel of the brackets, in which the upright (22) fixed to the lower climbing bracket (1 6) can be moved. 8. Scaffolding with a climbing device according to one of the preceding claims. 9. scaffolding according to claim 8, characterized in that the work scaffold is designed as a formwork scaffold for supporting at least one formwork element for a concrete wall formwork, the work console (14) being set up to support the formwork element. 10. Climbing formwork with at least one formwork element for a concrete wall formwork, wherein the climbing formwork comprises a climbing device according to one of claims 1 to 7, wherein the work console (14) carries the formwork element.