Construction site device with climbing formwork and co-elongated elevator

Abstract

The invention relates to a construction site device comprising: a climbing formwork module (2) for manufacturing a concrete section (9) of a building comprising at least one elevator shaft (4); and an elevator system (3) that is elongated together and has a machine platform (6) that can be moved vertically in an elevator shaft (4); and a lifting platform (10) for lifting the machine platform (6). The lifting platform (10) is fixedly connected to the climbing formwork module (2) by means of a rope-based sling (20) at least during a climbing step in such a way that the lifting platform (10) can be lifted together with the climbing formwork module (2) during the climbing step.

Description

Field of the Invention

[0001] The present invention relates to a construction site device for an elevator installation and a method for constructing such an elevator installation for a building under construction, the building having an elevator shaft that increases in height as the height of the building increases during the construction phase of the building. Such an elevator installation can in particular be applied to a building construction site of a high-rise building. Background Art

[0002] When constructing a building, the lower floors that are first constructed may already be completed to the extent that they are habitable or otherwise usable. For this purpose, the elevator installation includes an elevator car that can be used during the construction phase of the building to reach floors that are already used as living or commercial spaces. Here, the construction phase elevator with this elevator car mainly grows with the building, that is, the available lifting height of the construction elevator increases as the height of the building or the elevator shaft increases. This enables construction personnel and construction materials or, if necessary, users to be transported by the elevator car from living or commercial spaces that are already available before the building is completed. US2016 / 0152442A1 shows such an elevator installation. The elevator installation has a machine platform that can move along the elevator shaft, and the elevator car is suspended on the machine platform by a suspension means arranged in the elevator shaft. The machine platform is lifted respectively to increase the available lifting height of the elevator car in the elevator shaft. To lift the machine platform, a lifting platform that can move along the elevator shaft is provided for forming a load-bearing structure that can be supported on the wall of the elevator shaft. The load-bearing structure arranged above the machine platform is respectively raised to a height at which the platform carried by the load-bearing structure can be lifted by a certain stroke before lifting the machine platform, by means of a first hoist installed in the upper region of the elevator shaft. A second hoist arranged on the lifting platform is used to lift the machine platform.

[0003] The construction of an elevator shaft in a building can be carried out with the aid of climbing formwork. The climbing formwork belongs to a discontinuous formwork system and is used for manufacturing tower-shaped building structures. The concrete segments for the elevator shaft can be manufactured in a floor-by-floor manner with the climbing formwork. However, it is also conceivable to manufacture concrete segments for two or more floors. From WO2022 / 126906A1, a construction site device with climbing formwork modules for manufacturing concrete segments of a building including an elevator shaft and a co-growing elevator installation is known. In one embodiment, the lifting platform is directly arranged on the climbing carriage or the hydraulic cylinder of the hydraulic climbing mechanism of the climbing formwork. In the two-stage climber of the climbing formwork, in the second step, the hydraulic cylinder is tightened again by pulling in the piston rod and thereby the lifting platform connected to the hydraulic cylinder is lifted. Thus, the climbing formwork continuously bears the lifting platform. In another embodiment, the lifting platform is variably connected to the climbing formwork platform by means of a sling. In order to lift the lifting platform to the next higher level, the lifting platform must be moved relative to each other by means of a drive and is thus lifted. Summary of the Invention

[0004] The object of the present invention is to overcome the disadvantages of the known art and in particular to provide a construction site device of the aforementioned type that can be operated simply and effectively.

[0005] According to the present invention, this object and other objects are achieved by a construction site device having the features of claim 1. According to the present invention, this object and other objects are achieved by a construction site device having the features of claim 1.

[0006] The construction site equipment includes climbing formwork modules for preferably layer-by-layer manufacturing of concrete segments of a building including at least one shaft. Furthermore, the construction site equipment also includes a growing elevator installation with a machine platform vertically movable in the elevator shaft, the machine platform having an elevator drive and an elevator car suspended on the machine platform by means of a sling. The concrete segments for the elevator shaft can be manufactured in a layer-by-layer manner using the climbing formwork modules; however, it is also conceivable to manufacture concrete segments for two or more floors. In the elevator shaft, the elevator car and the counterweight can move up and down along a vertical travel track. The elevator shaft can be a single shaft surrounded by shaft walls and having a rectangular planar shape. Here, the elevator installation is an elevator installation for a building under construction, which has an elevator shaft that increases in height as the height of the building increases during the construction phase of the building. The elevator installation also has a movable lifting platform for lifting the machine platform. By means of or by means of a lifting platform, which is also vertically movable in the elevator shaft and arranged above the machine platform, the machine platform can be simply lifted in the elevator shaft with the aid of the elevator installation. The elevator installation can have an assembly platform from which the guide rail strands can be extended upwards during the track assembly phase in order to guide the elevator car and, if necessary, the counterweight. In order to lift the lifting platform, the lifting platform is fixedly connected to the climbing formwork module via a sling at least during the climbing step of the climbing formwork module, such that the lifting platform can be lifted together with the climbing formwork module during the climbing step, whereby a series of advantages are obtained, in which, during the climbing step of the climbing formwork module, the climbing formwork module moves to the next higher vertical plane after completion of the concrete segment. Thus, the climbing process of the climbing formwork module can also be used to lift the lifting platform, which is very effective and can thereby accelerate the construction progress. This arrangement also has advantages in terms of energy. Here, the sling is understood to be a longitudinally extending mechanism such as ropes, belts and chains, which can carry high loads in the extension direction, yet are bendable or flexible transversely to the extension direction.

[0007] The climbing formwork module can be configured as a self-climbing climbing formwork. The self-climbing climbing formwork can be equipped with an integrated climbing drive. As climbing drives, linear drives can be considered, in particular as hydraulic cylinders or pneumatic cylinders, spindle drives, rack drives and / or chain drives.

[0008] The lifting platform can be suspended directly or indirectly by means of a sling on the working platform below the climbing formwork module, whereby, when lifting the subsequent lower working platform by means of a chain drive, the lifting platform is automatically lifted together and without using its own lifting mechanism and thus climbs with it. The working platform is also referred to as a workbench.

[0009] For the above indirect cases, the following embodiments can be obtained. The climbing formwork module can have a carrier platform that preferably cannot move, which is arranged below the working platform below, wherein the lifting platform is suspended on the carrier platform. Separating the working platform and the carrier platform has advantages in terms of the operation of the construction site equipment. For example, holes for providing suspension points for one or more lifting devices can be provided on the lower side of the carrier platform.

[0010] The climbing formwork module can include a lower working platform and at least one second working platform above the lower working platform, and the lifting platform is suspended on the second working platform, and the lifting platform is formed by the lower working platform. Therefore, the climbing formwork module includes at least two working platforms arranged at different heights, wherein the lower working platform forms the lifting platform.

[0011] However, the climbing formwork module can also include three working platforms arranged at different heights. The climbing formwork module can include a lower working platform or a subsequent working platform, an intermediate working platform above it, and an upper working platform above the intermediate working platform, wherein the lifting platform is suspended on the upper working platform, and the lifting platform is composed of the lower working platform.

[0012] The construction site equipment can include a lowering device preferably integrated in the climbing formwork module. However, it is also conceivable to assign the lowering device to the lifting platform. During the climbing step of the climbing formwork module (in this step, the climbing formwork module moves to the next higher vertical plane after completing a concrete segment), based on the fact that the lifting platform is fixedly connected to the climbing formwork module, the lifting platform is lifted together with the climbing formwork module. Therefore, the lifting platform becomes the lifted or elevated lifting platform. After the climbing step is completed, with the help of this lowering device, the elevated lifting platform can be moved downward, and thus can be in or on the elevator shaft and descend to a temporary or fixed fixing point (for example, a pocket-shaped recess in the shaft wall, the floor of the floor, a bracket fixed on the shaft wall or optionally even formed). During the construction phase, the lifting platform is temporarily supported at these fixing points. The machine platform can also be supported at such fixing points. The lowering device can also be used to adjust the vertical position of the lifting platform. Therefore, the upward movement of the lifting platform can also be performed when needed using the lowering device.

[0013] As a lowering device, a spreader towing device, such as a drivable continuous winch, can be used separately. For example, a working platform or a carrier platform as a lowering device can have a spreader towing device, such as a drivable continuous winch. If the spreader is a cable, the lowering device can be a cable continuous winch. As a cable continuous winch, for example, the so-called "Tirak" can be used. Such cable continuous winches have the advantages that they are very simply and robustly constructed and are less prone to failure. Therefore, the manufacturing costs and maintenance costs can be minimized.

[0014] In order to connect the climbing formwork module and the lifting platform, the construction site equipment can have at least one chain as a spreader. In other words, the lifting platform can be suspended from the working platform or the carrier platform by chains to form a spreader. Preferably, the lifting platform is connected to the climbing formwork module by four chains preferably arranged in the corner regions of the lifting platform.

[0015] The construction site equipment can also include a rope-based safety mechanism for securing the lifting platform in an emergency in case of spreader failure. The failure involves, for example, at least one chain.

[0016] For example, the connection between the climbing formwork module and the lifting platform can have at least one chain as a spreader and a steel cable as a safety mechanism. The spreader and the safety mechanism basically have the same orientation here, where the safety mechanism is slightly slack under normal circumstances and is only used and loaded with tension in an emergency.

[0017] Furthermore, it is advantageous that the lifting platform has two parallel horizontal carriers, where, in order to extend the carrier length to match different shaft sizes, the horizontal carriers are each designed to be telescopic. As an alternative or supplement, movable support elements, such as pivotally supported on the carriers, can be provided at one carrier end of the respective horizontal carrier and preferably at both carrier ends, and the support elements of the respective horizontal carrier and thus the lifting platform as a whole can be supported on fixed points in or on the elevator shaft by these support elements.

[0018] One or more connection points for one or more spreaders can be integrated into the horizontal carriers of the lifting platform. Here, each horizontal carrier can respectively have two connection points formed by holes.

[0019] The lifting platform can have a flat top structure to form a protective roof cover, and the flat top structure can have a top plate pre-set with a protective roof cover. For a larger range of applications, it would be advantageous for the lifting platform to have a horizontal top structure for forming a protective roof cover, where the top structure consists of a plurality of plates arranged side by side. Thus, a separate protective roof cover can be dispensed with.

[0020] Another aspect of the present invention relates to a method for constructing an elevator installation for a building under construction, the elevator installation having an elevator shaft that increases in height as the height of the building increases during the construction phase of the building, wherein the elevator shaft is preferably constructed in concrete sections layer by layer with the aid of climbing formwork modules, wherein the climbing formwork modules move upward in a climbing step between the individual concrete sections, and wherein the elevator installation includes a machine platform that is vertically movable in the elevator shaft and a lifting platform that is vertically movable in the elevator shaft for lifting the machine platform. The available lifting height of the elevator installation can be matched to the increasing height of the building by performing at least one lifting process in which the machine platform and an elevator car suspended from the machine platform by means of a suspension device are lifted in the elevator shaft using an elevator drive. The advantage of this method is that, based on the lifting platform being fixedly connected to the climbing formwork module by means of a suspension device, the lifting platform is simultaneously lifted when the climbing formwork module climbs. Thus, a very effective, fast and easy-to-operate method is provided for constructing a growing elevator installation in combination with a climbing formwork design.

[0021] After the end of the climbing step, the raised lifting platform can be moved downward by means of a lowering device and lowered to a fixed point on the shaft side. The lowering process does not necessarily have to be carried out immediately after or after a climbing step performed by the climbing formwork module. If the climbing formwork module has, for example, a hydraulic device in the form of a hydraulic cylinder for climbing or lifting, it is possible that after the hydraulic lift, a second lifting step is carried out in which the lifting platform is moved upward in the case of a temporarily fixed climbing formwork module and more precisely in the case of a temporarily fixed working platform (on which the lifting platform is suspended). This relative movement can be implemented by means of a chain hoist or a winch, in particular by means of the continuously operating winch already mentioned above. Thus, the lifting can be carried out in two stages, wherein the lifting platform is mainly or on a vertical main path section, for example, hydraulically lifted by means of the climbing formwork module (first stage), and wherein the lifting platform is secondarily or on a relatively short vertical path section lifted by influencing the suspension device, for example, by winding up the suspension device or other forms of shortening (second stage). For this purpose, the lowering device can be used, that is to say, the lowering device can also form a lifting device for secondarily lifting the lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other advantages and individual features result from the following description of the embodiments and the drawings. Among them:

[0023] Figure 1 A schematic view showing a construction site installation having a climbing formwork module and a growing elevator installation

[0024] Figure 2 Side view of a construction site device showing a lifting platform with a climbing formwork module and an elevator device

[0025] Figure 3 Showing after the climbing step Figure 2 of the construction site device

[0026] Figure 4 Perspective view of a lifting platform for an elevator device

[0027] Figure 5 Showing Figure 4 an enlarged view of the horizontal carrier of the lifting platform in

[0028] Figure 6a and Figure 6b showing the horizontal carrier in two different positions, and

[0029] Figure 7 Side view of a lifting platform temporarily fixed in an elevator shaft of an elevator device Detailed Description

[0030] Figure 1 Schematically shows a construction site device 1 denoted by 1 with a climbing formwork module 2 and a growing elevator device 3. The climbing formwork module 2 is used to manufacture concrete segments of a building including an elevator shaft 4 floor by floor. Here, only the building part with the elevator shaft 4 is shown in the building. The elevator shaft 4 represents the actual shell core, which usually includes one or more such elevator shafts. In particular, it extends vertically on the elevator shaft, and this vertical extension can actually travel over the entire building height at a certain elevator shaft

[0031] The climbing formwork module 2 is currently configured as a self-climbing formwork. In this crane-independent variant of the climbing formwork, a climbing mechanism lifts the unit to the next floor. The climbing mechanism of the climbing formwork module can include a linear drive, in particular a hydraulic cylinder or a pneumatic cylinder, a spindle drive, a rack drive or a chain drive or a combination of different drives. In this embodiment, the climbing process is carried out hydraulically. The corresponding hydraulic cylinder is denoted by 30

[0032] Therefore, the elevator installation 3 for a building under construction includes an elevator shaft 4, which grows in height as the building height increases during the construction phase of the building. An elevator car 5 is provided in the elevator shaft 4. The elevator car 5 is guided on at least one guide rail strand during vertical movement. The elevator or elevator installation 3 generally also includes a counterweight (not shown here) in addition to the elevator car 5. The elevator car 5 and the counterweight are connected to each other by ropes or belts 16 and can thus move in opposite directions to each other. An elevator drive 17 is used to move the elevator car 5 (and the counterweight), and the elevator drive can, for example, have a motor-driven traction sheave. In order to optimally guide the elevator car and the counterweight in a straight line, a plurality of guide rail strands are required, where each guide rail strand consists of guide rails arranged next to each other. The elevator installation 3 has a structure above the elevator car 5 for equipping the upward-growing elevator shaft 4 with guide rails 35 for the guide rail strands. This structure includes a lifting platform 10, a machine platform 6, and an assembly platform 7 arranged between these two platforms 6, 10. Here, the assembly platform 7 is a platform from which the guide rail strands extend upward. The assembly platform 7 serves as a workbench for the assembly personnel. In addition, in addition to the guide rails, the assembly platform 7 can also serve as a transport device for other elevator components to be assembled. The assembly platform 7 is suspended on the lifting platform 10 via a rope-based lifting device and can move up and down in the area between the platforms 6 and 10.

[0033] In this embodiment, the elevator shaft 4 is designed for an elevator with an elevator car and a counterweight. However, the elevator shaft 4 can also be designed for multiple elevators. The elevator shaft 4 can further be designed for a self-driven construction phase elevator car.

[0034] During the building construction phase, the elevator car 5 is already able to transport people and goods to and from the lower floors. In particular, the elevator car can be used to transport construction workers and construction materials. But it can also be used to transport, in compliance with regulations, users of residential or commercial spaces that are already available before the building is completed, at least between the floors corresponding to these spaces.

[0035] The climbing formwork module 2 includes a lower working platform 14, which forms a workbench. Another workbench of the climbing formwork module 2 is denoted by 13. In addition, a carrier formwork 34 can be seen, into which fresh concrete is poured.

[0036] Different operations for the climbing formwork can be carried out by the working platforms 13, 14. Personnel are schematically shown on the working platform 13u. The working platforms 13, 14 are walkable. For example, the climbing brackets can be operated by the working platforms. Cones can also be removed from the wall from here.

[0037] The lifting platform 10 denoted by 10 is temporarily fixed in the upper region of the currently existing elevator shaft 4. The lifting platform 10 is configured as a load-bearing structure. In addition, the lifting platform 10 is used to carry a lifting device through which the assembly platform 7 can be moved up and down. The lifting platform 10 may also include a mechanism for lifting the machine platform 6 provided with the top plate 38. However, the purpose of the lifting platform 10 is also to protect the personnel and equipment in the elevator shaft 4, especially the personnel and equipment in the assembly platform 7, from objects that may fall during construction work on the building.

[0038] The lifting platform 10 can be brought to a higher level in the advantageous manner described below without using a crane. After reaching the next higher level, the lifting platform 10 can be temporarily fixed in the elevator shaft 4 again. Thereafter, the machine platform 6 can be lifted to the next higher level. For this purpose, the lifting platform 10 has a lifting mechanism, such as a chain hoist. The chain hoist is designed such that the mechanical platform 6 preferably together with the suspended elevator car 5 can be lifted up and down.

[0039] The lifting platform 10 has a horizontal flat top structure 26 for covering the elevator shaft 4 and forming a protective roof. The task of the protective roof 26 is to prevent concrete and objects from reaching the shaft space below the platform 10 (see Figure 4 ). Advantageously, a sealing device configured as a surrounding seal can be installed on the platform 10 on the edge side.

[0040] The lifting platform 10 is fixedly connected to the climbing formwork module 2 by means of a sling 20 in the form of a rope, belt or chain, so that the lifting platform 10 can be lifted together with the climbing formwork module 2 during the climbing step of the climbing formwork module 2. To perform the climbing step, a hydraulic cylinder 30 is required. In Figure 1 a position of the climbing formwork module 2 is shown in which the lower working platform 14 has been hydraulically lifted beforehand. To bring the lower working platform 14 and thus also the lifting platform 10 to the next higher level, starting from the position shown in Figure 1 the working platform 13 must first be moved up or climbed. Then, the lower working platform 14 can be lifted later together with the lifting platform 10 by means of the hydraulic cylinder 30.

[0041] A lowering device (not shown here) can be provided by means of which the raised lifting platform 10 can be lowered to a fixed point in the elevator shaft 4. These fixed points can be, for example, pocket-shaped recesses in the shaft wall and / or the floor bottom. For example, if the sling 20 is designed as a load-bearing rope, the said lowering device can be a drivable cable continuous winch that can also perform an adjustment task.

[0042] Figure 2 and Figure 3 relates to another embodiment of the construction site equipment 1. The climbing formwork module 2 for the concrete segments 9 for layer-by-layer construction of a building including an elevator shaft 4 currently includes three working platforms 12, 13, 14. The so-called carrier grid is designated by 39. The climbing formwork module 2 has a hydraulic cylinder 30 by means of which the climbing formwork module 2 can continue to move upward in a creeping or caterpillar manner in the vertical direction. In the climbing step, the rear lower working platform 14 is moved upward hydraulically. In this climbing step, since the lifting tackle 20 is fixedly connected to the climbing formwork module 2 during this climbing step, the lifting platform 10 is also raised by the same distance at the same time. The climbing formwork module 2 may also have a (not shown) carrier platform which is arranged below the lower working platform 14 and on which the lifting platform 10 is suspended. In this case, the lifting platform 10 is formed by the lower working platform 14. Therefore, it is obvious here that the lifting platform 10 and the lower working platform 14 can be equivalent.

[0043] In Figure 2 , the lifting platform 10 is in a position just above the floor 37. For the safe operation of the elevator equipment 3, the lifting platform 10 is lowered to the height of the floor 37 and fixed to the floor. In this way, an assembly and machine platform (not shown here) can be reliably placed in the desired position. The lowering step of the lifting platform 10 is indicated by the arrow s. For lowering, for example, a cable continuous winch 11 can be used separately. On each new floor, the height of the lifting platform 10 can be adjusted, for example, by means of two cable continuous winches 11 so as not to transfer force from the lifting platform 10 to the climbing formwork module 2 located above it.

[0044] After the hydraulic climbing process (in which the lifting platform 10 is brought to the next higher plane by means of the hydraulic cylinder 30, which plane roughly corresponds to one floor), the situation as shown in Figure 3 can occur. The lifting platform 10 is located slightly below the floor 37. For reliable fixation in the shaft, the lifting platform 10 can be moved upward in the direction of the arrow h by means of the cable continuous winch 11 and moved in the s direction for lowering.

[0045] In Figure 4 , Figure 5 and Figure 6a , 6bThe structural details for designing the lifting platform 10 are shown. The lifting platform 10 has two parallel horizontal carriers 21, where the horizontal carriers 21 are each designed to be telescopic. Support elements 24 pivotally supported on the carriers are provided at both carrier ends of each horizontal carrier 21, and through these support elements, the horizontal carrier 21 and thus also the lifting platform 10 can be supported at fixed points in or on the elevator shaft. Each horizontal carrier 21 has two connection points 25 formed by holes for a lifting tackle (not shown here).

[0046] For connecting between the climbing formwork module and the lifting platform 10, the lifting tackle can be designed as a chain. Thus, the lifting platform 10 is connected to the climbing formwork module by four chains arranged in the corner regions of the lifting platform. The construction site equipment can also have a rope-based safety mechanism for securing the lifting platform 10 in an emergency in case the chains fail, where, for redundant safety functions, a steel cable is advantageously used as the safety mechanism.

[0047] The lifting platform 10 has a horizontal top structure 26 for forming a protective roof, where the top structure is significantly composed of plates.

[0048] Figure 7 A possible structural design of the lifting platform 10 is shown, and this lifting platform can be used for Figure 1 construction site equipment in an elevator installation of a certain type. The lifting platform 10 has, for example, pivotable support elements 24 that are inserted into recesses 36 in the shaft wall to fix the lifting platform 10. On the opposite side, the lifting platform 10 is also fixed to the floor 37 by support elements of the same construction. Furthermore, a motorized lifting device 18 with a chain hoist for lifting a machine platform can also be seen. The chain of the chain hoist is stored in a chain storage. Through this chain hoist, a displaceable machine platform and an elevator car can be moved from a lower temporary use position to the next higher use position. The chain hoist, denoted by 20, is used as the lifting tackle through which the lifting platform 10 is connected to the climbing formwork module and can move downward and upward for adjustment if necessary.

Claims

1. A construction site device, comprising: A climbing formwork module (2) for manufacturing concrete segments (9) of a building including at least one elevator shaft (4), An elevator device (3) that grows together with a machine platform (6) capable of moving vertically in the elevator shaft (4), the machine platform (6) having: an elevator drive, an elevator car (5) suspended on the machine platform (6) by a rope or belt (16), and a lifting platform (10) for lifting the machine platform (6), characterized in that, The lifting platform (10) is fixedly connected to the climbing formwork module (2) at least during the climbing step by a lifting tackle (20) in such a way that the lifting platform (10) can be lifted together with the climbing formwork module (2) during the climbing step.

2. The construction site equipment according to claim 1, characterized in that, The climbing formwork module (2) is configured as a self-climbing formwork, and the lifting platform (10) is suspended on the working platform (14) of the climbing formwork module (2) via the lifting tackle (20).

3. The construction site equipment according to claim 2, characterized in that, The climbing formwork module (2) has a lower working platform (14) and at least one working platform (12) located above the lower working platform, wherein the lifting platform (10) is suspended on the working platform (12) located above the lower working platform, and the lifting platform (10) is constituted by the lower working platform (14).

4. The construction site equipment according to claim 3, wherein The climbing formwork module (2) has a lower working platform (14), an intermediate working platform (13) and an upper working platform (14) above the lower working platform, wherein the lifting platform (10) is suspended on the upper working platform (12), and the lifting platform (10) is constituted by the lower working platform (14).

5. The construction site equipment according to any one of claims 1 to 4, characterized in that, A lowering device (11) is provided, by means of which the elevated lifting platform (10) can be lowered to a fixed point in or on the elevator shaft (4).

6. The construction site equipment according to claim 5, characterized in that, The lowering device is a traction device or includes a traction device, which is in particular a continuous winch (11).

7. The construction site equipment according to any one of claims 1 to 6, characterized in that, The construction site device has at least one chain as a lifting tackle (20) for connection between the climbing formwork module (2) and the lifting platform (10).

8. The construction site equipment according to any one of claims 1 to 7, characterized in that, The lifting platform (10) is connected to the climbing formwork module (2) by four lifting tackles (20) mounted on the corner regions of the lifting platform and in particular by chains.

9. The construction site equipment according to any one of claims 1 to 8, characterized in that, The construction site device also has a rope-based safety mechanism for securing the lifting platform (10) in case of failure of the lifting tackle (20).

10. The construction site equipment according to any one of claims 1 to 9, characterized in that, The lifting platform (10) has two parallel horizontal carriers (21), wherein the horizontal carriers (21) are each designed to be telescopic, and / or at one carrier end and preferably at both carrier ends of the respective horizontal carrier (21), support elements (24) that can be movably supported, for example pivotally supported, on the carrier are arranged, and through the support elements, the horizontal carriers (21) and thus also the lifting platform can be supported on a fixed point in or on the elevator shaft.

11. The construction site equipment according to claim 10, wherein, The connection points for the spreader (20) are integrated in the horizontal carrier (21) of the lifting platform (10), wherein each horizontal carrier (21) has two connection points (25) formed by eyelets respectively.

12. The construction site equipment according to any one of claims 1 to 11, characterized in that, The lifting platform (10) has a horizontal top structure (26) for forming a protective roof, wherein the top structure is assembled from plates.

13. A method for constructing an elevator installation (3) for a building (10) under construction, the elevator installation having an elevator shaft (4) that increases in height as the height of the building increases during the course of the building construction phase, wherein, The elevator shaft (4) is constructed by means of climbing formwork modules (2), and the elevator installation (3) includes a machine platform (6) which can move vertically in the elevator shaft (4) and a lifting platform (10) which can move vertically in the elevator shaft (4) for lifting the machine platform (6), characterized in that, based on the fact that the lifting platform is fixedly connected to the climbing formwork module (2) by means of a spreader (20), when the climbing formwork module (2) climbs, the lifting platform (10) is simultaneously lifted together.

14. The method according to claim 13, wherein After the climbing step is completed, the raised lifting platform (10) moves downward by means of a lowering device (11) and descends to a fixed point on the shaft side.

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