HK40124170A - Platform for an elevator system for a building which is under construction - Google Patents

Description

Platform used for elevator equipment in buildings under construction

Technical Field

This invention relates to a platform for an elevator system having an elevator shaft that increases in height as the building's construction progresses, and specifically to such an elevator system. This elevator system is particularly suitable for use on construction sites of high-rise buildings.

Background Technology

During building construction, the lower floors may be completed first and ready for residential or other use. For this purpose, elevator equipment includes elevator cars that can be used to reach floors already used as residential or commercial spaces during the building construction phase. Here, the construction-phase elevator with such an elevator car grows along with the building, meaning the available lifting height of the construction elevator increases with the height of the building or elevator shaft. This allows construction workers and building materials, or, if necessary, users of apartments or commercial spaces already occupied before the building's completion, to be transported via the elevator car during construction. Such elevator equipment is known from US 2016/0152442 A1. The elevator equipment has a machine platform movable along the elevator shaft, on which the elevator car is suspended by a hoist arranged in the elevator shaft. The machine platform is lifted separately to increase the available lifting height of the elevator car within the elevator shaft. To lift the machine platform, a platform movable along the elevator shaft is provided to form a load-bearing structure that can be supported against the elevator shaft wall. Before lifting the machine platform, the supporting structure positioned above it is raised to a height by a first lifting device installed in the upper area of the elevator shaft, at which the platform supported by the supporting structure can be lifted a certain distance. A second elevator, positioned on the supporting structure, is used to lift the machine platform. Using this prior art, the elevator car built during the construction phase can continue to be used in the building after its completion.

The construction of elevator shafts in buildings can be accomplished using climbing formwork. Climbing formwork is a discontinuous formwork system used for constructing tower-like structures. It allows for the construction of concrete sections of elevator shafts, layer by layer. It is known that pocket-shaped notches are provided during the construction of these concrete sections. Telescopic support elements of machine platforms or support elements of other platforms engage with these notches in the shaft wall, thereby enabling the respective platforms to be positioned in a fixed location. This is illustrated, for example, in WO 2022/069316 A1. However, practice shows that, for example, when using climbing formwork, such notches are often not formed on the shaft wall, or their positions are incorrect.

Summary of the Invention

The object of this invention is to overcome the shortcomings of known elevator equipment, and in particular to provide an elevator equipment of the type described at the beginning, which can be simply and safely installed in an elevator shaft. The elevator equipment should include a platform that can be reliably and safely positioned in the elevator shaft without special structural measures.

According to the invention, the aforementioned and other objectives are achieved by a platform having the features of claim 1. An elevator system for a building under construction has an elevator shaft that increases in height as the building height increases during the construction phase. The elevator system includes a platform installed in the elevator shaft that is adapted to or capable of adapting to the increased building height. Here, the elevator system may have one or more such platforms. For example, the platform may be a so-called machine platform, i.e., a platform with an elevator drive, by which an elevator car suspended on the machine platform by means of a hoist can be driven. The machine platform can be lifted in the elevator shaft by means of a lifting device to adapt to the increased building height. The platform may have, for example, a retractable and extendable support mechanism or a pivotable support mechanism for support in the elevator shaft. In this document, the term "elevator shaft" should be understood as a space in a building under construction whose height increases with the progress of construction, wherein the space is sized and designed such that at least one elevator car, typically one elevator car and a counterweight, can move up and down along vertical travel tracks within that space. Such an elevator shaft can be a single shaft enclosed by shaft walls. However, an elevator shaft can also be part of a continuous space in which the elevator cars of at least two elevators arranged parallel to each other, along with, if necessary, the travel rails of a counterweight, are arranged, wherein there are no shaft walls between the travel rails of adjacent elevators, but there are usually steel frames for fixing elevator components.

A platform is supported on an elevator shaft by means of at least one supporting base, which is fixed to the shaft wall by anchor bolts, anchor plugs, or other fixing mechanisms. Fastening elements are arranged to pre-define fixing points on the shaft side, and these fastening elements are also fixed to the shaft wall by anchor bolts, anchor plugs, or other fixing mechanisms. The fastening mechanisms are connected to or can be connected to the fastening elements to secure the platform. The platform can also be reliably and safely positioned within the elevator shaft, for example, on a smooth shaft wall or on an elevator shaft that was not specially prepared by structural measures during concrete formwork construction. At least one supporting base can be arranged at least temporarily for the construction phase, particularly for sections between two lifting processes during the track assembly phase. However, at least one supporting base can also be permanently arranged in the elevator shaft and does not need to be removed after the platform is lifted. The corresponding supporting base is preferably a metal supporting base to form a stable shaft support. This also applies to the case of at least one fastening element. Fastening elements can be installed temporarily or permanently in the elevator shaft. The fastening mechanism used to secure the platform to prevent it from falling is temporarily fixed to the fastening element, or otherwise connected to or accessible to it. Thus, the fastening mechanism cooperates with the fastening element to ensure the platform does not fall. The fastening element, such as a hook, eye bolt, or eye bolt, has a pre-defined anchor point on the shaft side, where a fastening rope or chain is attached as a fastening mechanism, for example, by hooking. If the platform moves downwards in an abnormal (safety-critical) situation, such as when the support frame fails, the fastening rope or chain is used to prevent a fall.

As an alternative or addition to the aforementioned machine platform, the elevator equipment may also include other platforms positioned and secured in the elevator shaft as described above. This platform may be, for example, a lifting platform, designed to move the machine platform further upwards during the lifting process. Such a lifting platform is referred to as an upper protection platform (crash deck). The platform may also include, for example, a protective roof. The platform may then contain basic components forming the load-bearing structure, which are adapted to the shaft space and almost completely fill the shaft space in the plan view. These basic components may be designed as plates or have plates. During the installation of the foundation components or during the construction phase, the basic components are preferably oriented horizontally.

According to a preferred embodiment, the fastening elements can be designed as fastening bases. These bases can be easily fixed to the shaft wall while also meeting high safety requirements, thus providing a favorable fixing point on the shaft side for the fastening mechanism.

Preferably, two support frames and two fastening frames can be provided on the corresponding sides to support and secure the platform. Here, these components are particularly preferably arranged in pairs in the elevator shaft, with each support frame and fastening frame forming such a support and fastening pair. This arrangement ensures a particularly stable and secure fixed position of the platform in the elevator shaft.

If the platform has a preferably retractable and extendable or pivotable support mechanism for support, the support base has lateral retainers, particularly in the form of side plates, for securing the support mechanism in position. For example, a metal profile component can be used as the support mechanism, movably supported in a horizontal carrier, allowing the metal profile component to retract and extend retractably. Thanks to such retainers, the platform can be stably positioned in its fixed location. During the lifting process, the support mechanism can retract or swing in, allowing the platform to move upwards without problems. After the lifting process is complete, the support mechanism can extend or swing out again, and the platform can then be lowered onto one or more upper support bases by means of the support mechanism to form a new fixed position in the elevator shaft.

The support frame may have: a fixed section, preferably plate-shaped, that lies flat or can lie flat (flat against or can be against) to the shaft wall; and a support section extending at right angles from the fixed section to define the resting surface for the platform and, in particular, for the aforementioned support mechanism. Both the fixed section and the support section may be metal components, particularly made of steel. However, a monolithic structure may also be considered, in which the fixed section and the support section are formed together and integrally molded, for example, a cast metal body.

In a preferred embodiment of the elevator equipment, the fastening element is designed as a fastening base, and the platform has at least one retaining device to form a fastening mechanism. This retaining device can be effectively connected to or cooperate with the fastening base to secure the platform. Here, the fastening base can form a stop against the retaining device. If the platform moves downward or is about to move in a safety situation, a stop-like contact will occur between the retaining device and the fastening base, thus preventing a fall. If two fastening bases are provided on each side, two retaining devices must be provided to secure the platform.

The retaining device can be pivotally secured to the platform. The pivotable design allows for easy disengagement of the effective connection in relation to the lifting process. The retaining device can pivot back and forth between an active position (where the platform is secured) and a second position, in which the retaining device is removed from or detached from the securing base for use in the lifting process to disengage the effective connection.

The retaining device may have an engagement opening that surrounds the support of the fastening base in the active position, such that in the event of a safety condition, the support forms a stop for the retaining device to prevent the platform from moving further downward.

The retaining device may have a retaining arm and a retaining segment connected to the retaining arm, wherein the retaining device is pivotally supported on the platform by the lower end of the retaining arm, and wherein the retaining segment is connected to the upper end of the retaining arm, the retaining segment being designed in the form of a frame and forming an engagement opening. In its active position, the retaining device is able to be held in a fastening base, thereby ensuring engagement by means of the engagement opening.

The retaining device includes a retaining arm and a retaining segment made of one or more metal plates.

To further enhance safety, a positioning mechanism can be provided to hold the retaining device in the fastening base, thereby ensuring engagement and securing the retaining device in the active position.

An advantageous elevator setup can be achieved when the support frame is located below the platform and the fastening elements, particularly the fastening frame, are located above the platform. This arrangement allows for exceptionally stable positioning, while also making fastening easy to operate.

Advantageously, the (multiple) support frames and (multiple) fastening frames are essentially of the same type and preferably identical in design. This reduction in the number of different components brings advantages in assembly and cost. The fact that the same component can be used for both support and fastening frames also offers logistical advantages.

Another aspect of the invention relates to a platform for an elevator system in a building under construction, the elevator system having an elevator shaft that increases in height as the building height increases during the construction phase, wherein the available lifting height of the elevator system is adapted to the increased building height when using the platform, particularly to the aforementioned elevator system, wherein at least one of these platforms has a support mechanism or a pivotable support mechanism preferably retractable and extendable for support on at least one support base, and the platform has a retaining device that can be effectively connected to a fastening base for securing the platform.

Finally, another aspect of the invention relates to a method for constructing an elevator system for a building under construction, the elevator system having an elevator shaft that increases in height as the building height increases during the construction phase, wherein the available lifting height of the elevator system is adapted to the increased building height by performing at least one lifting process, in which a machine platform with an elevator drive and an elevator car suspended on the machine platform by means of a hoist are lifted in the elevator shaft, for example by means of a lifting device. The advantage of this method is that, after the lifting process, the machine platform is mounted on at least one side of a smooth shaft wall in such a way that the machine platform is placed on at least one support frame fixed to the shaft wall by anchor screws, anchor bolts, or other fixing mechanisms, and at least one fastening frame is fixed to the shaft wall by anchor screws, anchor bolts, or other fixing mechanisms, and the machine platform is secured by at least one fastening frame. Here, "smooth" refers to the wall area where the platform is to be mounted; of course, the wall does not need to be completely smooth. Smoothness means that the wall has a more or less flat surface, and at least in the desired installation area of the platform, there are no recesses or notches in the wall that would otherwise be common in the prior art for inserting a support mechanism. This method is particularly suitable for constructing the aforementioned elevator equipment.

Attached Figure Description

Other advantages and individual features will become apparent from the following description of the embodiments and the accompanying drawings. Wherein:

Figure 1 shows a schematic diagram of an elevator system for a building under construction, in a side view. The elevator system has an elevator shaft that increases in height as the building's construction progresses. The elevator system includes a machine platform fixedly positioned within the elevator shaft.

Figure 2 shows an enlarged detailed view of the elevator equipment shown in Figure 1, in which the machine platform is securely and fixedly positioned in the elevator shaft by means of a support frame and a fastening frame.

Figure 3 shows a perspective view of the machine platform of the elevator equipment according to the present invention, which is fixedly positioned in the elevator shaft.

Figure 4 shows an enlarged view of the support frame or fastening frame of the elevator equipment according to Figure 3.

Figure 5 shows a retaining device for securing the machine platform of the elevator equipment according to Figure 3.

Detailed Implementation

Figure 1 schematically illustrates an elevator system 1 for a building under construction. The building includes an elevator shaft 2, which increases in height as the building progresses during its construction phase. An elevator car 3 is installed in the elevator shaft 2. The elevator also has a counterweight and hoisting devices 26. During vertical travel, the elevator car 3 and counterweight 4 are guided on guide rails (not shown here for simplicity). A drive 5 (e.g., a traction pulley drive) drives the corresponding hoisting devices (e.g., one or more belts, cables), thereby moving the elevator car 2 and counterweight 4 in opposite directions. The elevator car 3 can transport people and goods to or from lower floors during the building's construction phase. In particular, the elevator car can be used to transport construction workers and building materials. However, for users of apartments or commercial premises already occupied before the building's completion, transport can also be carried out, at least between the floors allocated to those rooms, as per regulations.

Elevator equipment 1 has a machine platform 7 with the aforementioned drive unit 5, and the elevator car 3 is suspended from the machine platform 7 by a hoist 26. During the construction phase, the machine platform 7 can move upward along the elevator shaft 2. In Figure 1, the machine platform 7 is fixedly positioned in the elevator shaft 2 as explained in detail below. However, this fixed positioning is only temporary; the elevator equipment grows discontinuously. The fixed positioning must be canceled before the lifting process can proceed. During the lifting process, the machine platform 7 is raised to the next higher floor in the elevator shaft 2.

Elevator equipment 1 has a device (not shown here) above machine platform 7 for equipping the upwardly extending elevator shaft 2, specifically with guide rails for the guide rail strands. In addition to machine platform 7, this arrangement includes other platforms, such as an upper protection platform (not shown), through which machine platform 7 can be lifted in elevator shaft 2. For lifting, a lifting device, indicated by 28, assigned to the upper protection platform, can be used. The upper protection platform also supports an assembly platform (also not shown). Here, the assembly platform is the platform from which the guide rail strands extend upwards. The assembly platform serves as a workbench for assembly personnel. The upper protection platform also has the task of protecting personnel and equipment in elevator shaft 2, particularly in the aforementioned assembly platform, from objects that may fall during building construction. A growth or elongation phase can begin after the rail assembly phase. After the rail assembly phase is completed, and as construction of building 2 progresses and elevator shaft 2 becomes sufficiently high, the platform must be positioned for the next higher floor. Once the upper protection platform has been temporarily secured again in elevator shaft 2, machine platform 7 can be raised to the next higher floor. In this embodiment, the machine platform 7 has connection points, for example, in the form of eyelets 23, for suspending, for example, a chain crane. The chain crane is designed such that the machine platform 7, preferably together with the suspended elevator car 3 (and counterweight), can move upwards for a lifting process. However, the machine platform 7 can also be moved to an upper working position by other lifting devices (e.g., cranes, winches, hydraulic jacks, or wire rope jacks).

As shown in Figure 1, the machine platform 7 is supported on one side by a support frame marked 8. The shaft opening is located on the other side. On this side, the machine platform 7 is supported on the floor, where a movable support mechanism 25 in the form of a profile component is provided for support. This support mechanism 25 can be moved or removed when necessary, allowing the machine platform 7 to move upward for an unobstructed lifting process. The support frame 7 is fixed to the shaft wall 6 of the elevator shaft 2 by means of anchor screws 13, anchor bolts, or other fixing mechanisms. Above the support frame is a second frame. This second frame, marked 9, is used to fasten the machine platform 7 and is therefore referred to as the fastening frame below. The fastening frame 9 has a pre-defined fixing point on the shaft side, and a retaining device 12, pivotally fixed to the platform 7, engages with this fixing point.

Figure 2 shows the details of the aforementioned retaining device 12. The retaining device 12 has a hook-shaped engagement structure that, in the event of a safety situation arising from the failure of the support frame 8, abuts against the fixed frame 9, thereby preventing undesirable downward movement of the machine platform 7. In addition to the fixed frame 9, other fastening elements, such as hooks, eye bolts, or eye locks inserted into the shaft wall 6, can be considered to pre-define the fixing points on the shaft side. Other fastening mechanisms can also be used besides the retaining device 12. For example, to prevent the platform 7 from falling, fastening ropes or chains can be temporarily connected to the aforementioned fixing points on the shaft side.

Figures 3 to 5 illustrate another embodiment of an elevator system for a building under construction, having an elevator shaft that increases in height as the building height increases during the construction phase. In this system, at least one platform is held and secured in the elevator shaft in a similar manner; this platform is, for example, a machine platform 7. The actuator for moving the elevator car is not shown in this example. The machine platform 7 has two horizontal main carriers 10 extending parallel to each other. The main carriers 10 are equipped with movable support mechanisms 11, 25 at both ends. The machine platform 7 has retractable and extendable support mechanisms 11 at its ends facing the shaft wall. These support mechanisms 11 are formed of profile components movably supported within a carrier 10 designed as a longitudinal carrier, wherein, in this embodiment, the longitudinal carrier 10 is designed as a box-shaped profile.

In Figure 3, the support mechanism 11 is in the extended state. Clearly, the corresponding profile components forming the support mechanism are located on the support base 8, thus supporting the platform. The support base 8 is fixed to the shaft wall 6 by means of anchor bolts 13. A fastening base 9 is arranged above the support base 8, which is also fixed to the shaft wall 6 in a similar manner by means of anchor bolts 13. Furthermore, as can be seen from Figure 3, on the side facing the shaft wall 6, two support bases 8, 8' and two fastening bases 9, 9' are provided for supporting and fastening the machine platform 7, with the support bases and fastening bases respectively paired and mating.

Structurally, the support base 8 and the fastening base 9 are designed identically. For simplicity, the structure and design of the support base 8 will be explained below. Therefore, the description of the support base 8 also applies to the fastening base 9. The support base 8 has a plate-shaped fixing section 17 that rests flat against the shaft wall 6, and a support section 18 extending at right angles from the fixing section to define the resting surface.

The machine platform 7 has a support mechanism arranged at the end of the longitudinal carrier 10, wherein the support mechanism, designated 25, is pivotally fixed to the carrier 10. The support mechanism 25, pivotally fixed to the carrier about a pivot axis 43, can pivot to the vertical position shown in FIG. 3 and is secured in this position by means of a fastening pin. The support mechanism can be preloaded, for example, by means of a spring, so that the support mechanism 42 pivots out to a horizontal position under the action of the spring. The machine platform 7 is fixedly positioned in the elevator shaft at the front by the pivoted support mechanism 25, wherein, in order to fix this position in the front region, the support mechanism 25 can be securely connected to the building floor for the required time by means of screws (not shown). The platform can also be fixedly positioned by means of such a pivotable support mechanism with smooth shaft walls, similar to the left or rear side, wherein, as already described, a telescopically movable support mechanism is used instead of a pivotal support mechanism.

Figure 4 shows the structural details of the design of the support base 8 (or the identically structured fastening base 9). The support base 8, made of sheet metal, can be produced at low cost yet with high stability. Multiple holes 22 are provided in the fixed section 17 formed of sheet metal through which anchoring screws can be guided. Support sections 18, extending perpendicularly from the fixed section 17, are connected to the fixed section 17 by plugs and preferably by welding. For structural reinforcement, fixing ribs 27 are also provided, supporting the support sections 18 downwards. Two side plates form lateral retainers 20 for securing the corresponding support mechanisms of the platform in place. The side plates 20 have leg sections on the front side, which define engagement surfaces when the retaining device 12 lowers in a safety situation. In this case, the force of the platform 7 now resting against the fastening base 9 is transferred to the fastening base 9 through the side plates 20.

The structural details of the retaining device 12 are shown in Figure 5. The retaining device 12 has a retaining arm 14 and a retaining segment 15 connected thereto, wherein the retaining device is composed of multiple metal plates. The retaining device 12 is pivotally connected to the platform 7, wherein the pivot axis is indicated by S. The retaining device 12 is pivotally supported on the platform via the lower end of the retaining arm 14. The retaining segment 15 is designed as a frame and forms an engagement opening 16. In the active position shown in Figure 3, the engagement opening 16 of the retaining device 12 surrounds the support of the fastening base 9, such that in the event of a safety situation, the support forms a stop against the retaining device 12 to prevent the platform 7 from moving further downward.

Figure 3 shows the positioning mechanism 21, which is configured to securely hold the retaining device 12 in its active position within the fastening base 9, thereby ensuring engagement and securing the retaining device 12. The fixed positioning must be released before the lifting process can proceed, elevating the machine platform 7 to the next higher floor in the elevator shaft 2. For this lifting process, the positioning mechanism 21 is released by removal, and the retaining device 12 is pivoted downwards to at least the extent that it no longer obstructs the fastening base 9, allowing the machine platform 7 to be lifted without hindrance. This structure can be designed so that the retaining device 12 can pivot to a substantially vertical position.

As shown in Figure 5, in this embodiment, the positioning mechanism 21 includes two threaded rods that are guided through holes in the retaining segment 15. The threaded rods are secured with nuts on the front side. The threaded rods are screwed into a flat profile on the back side, and the flat profile can be inserted into the fastening base 9 through the elongated hole 29 (elongated hole 29: see Figure 4) in the side plate 20.

The lifting platform or crash barrier that allows the machine platform 7 to move upward can also be equipped with a similar retaining device and supported on the support frame in a similar manner to the machine platform 7, and secured by the retaining device and the fastening frame.

A method for constructing an elevator system 1 for a building under construction typically includes multiple lifting processes performed therein. The elevator system has an elevator shaft 2 that is elevated as the building height increases during the construction phase, wherein the available lifting height of the elevator system 1 is adapted to the increase in building height. During the lifting process, a machine platform 7 with an elevator drive 5 and an elevator car 3 suspended from the machine platform 7 by means of a hoisting device 28 are lifted within the elevator shaft 2. After the lifting process, the machine platform 7 is installed on the smooth shaft wall 6 of the elevator shaft 2. During this installation, the machine platform 7 is placed on a support base 8, 8' fixed to the shaft wall 6 by means of anchoring screws on one side. On the opposite side of the shaft wall 6, the machine platform 7 can be placed on the floor. On this side, the machine platform 7 can also be positioned in a fixed location by other means. It is also contemplated that a support base and a fastening base be used on two opposite sides of the elevator shaft, respectively.

Claims (15)

1. An elevator device (1) for a building under construction, the elevator device having an elevator shaft (2) that increases in height as the building height gradually increases during the construction phase of the building, the elevator device including a platform (7) installed in the elevator shaft (2) that is adapted to or can be adapted to the gradually increasing building height, characterized in that at least one support frame (8) is arranged in the elevator shaft (2), the support frame being fixed to the shaft wall (6) of the elevator shaft (2) by means of anchor screws (13), anchor bolts or other fixing mechanisms, the platform (7) being supported on the support frame (8), and at least one fastening element for a pre-given fixing point on the shaft side is arranged in the elevator shaft (2), the fastening element being fixed to the shaft wall (6) of the elevator shaft (2) by means of anchor screws, anchor bolts or other fixing mechanisms, wherein, in order to fasten the platform (7), a plurality of fastening mechanisms are connected or can be connected to the fastening element. 2. The elevator equipment (1) according to claim 1, wherein the fastening element is designed as a fastening base frame (9). 3. The elevator equipment (1) according to claim 2, characterized in that the fastening base frame (9) and the supporting base frame (8) are designed in the same manner. 4. The elevator equipment (1) according to any one of claims 1 to 3, characterized in that two supporting base frames (8, 8') and two fastening base frames (9, 9') are provided on the respective sides for supporting and fastening the platform (7). 5. The elevator equipment (1) according to any one of claims 1 to 4, characterized in that the platform (7) has a support mechanism (11) that is preferably retractable and extendable in a telescopic manner for support, and the support base (8) has lateral retainers (20) in particular in the form of side plates for securing the support mechanism in position. 6. The elevator equipment (1) according to claim 5, characterized in that the support base frame (8) has: a fixed segment (17) preferably in the shape of a plate, the fixed segment being laid flat or being able to be laid flat on the shaft wall (17); and a support segment (18) extending at a right angle from the fixed segment (17) for defining the resting surface. 7. The elevator equipment (1) according to any one of claims 1 to 6, characterized in that the fastening element is designed as a fastening base (9), and the platform (7) has at least one retaining device (12) to form a fastening mechanism, the at least one retaining device being able to be effectively connected to or cooperate with the fastening base (9) to fasten the platform. 8. The elevator equipment (1) according to claim 7, wherein the retaining device (12) is pivotally fixed to the platform (7). 9. The elevator equipment (1) according to claim 7 or 8, characterized in that the retaining device (12) has an engagement opening (16) that surrounds the support of the fastening base (9) in the active position. 10. The elevator device (1) according to claim 9, characterized in that the retaining device (12) has a retaining arm (14) and a retaining segment (15) connected to the retaining arm, wherein the retaining device (12) is pivotally supported on the platform by the lower end of the retaining arm, and the retaining segment (15) is connected to the upper end of the retaining arm, the retaining segment being designed as a frame and forming an engagement opening (16). 11. The elevator equipment (1) according to any one of claims 7 to 10, characterized in that the retaining device (12) including the retaining arm (14) and the retaining section (15) is made of one or more metal plates. 12. The elevator equipment (1) according to any one of claims 7 to 11, characterized in that it is provided with a positioning mechanism for holding the retaining device (12) in the fastening base (9). 13. The elevator equipment (1) according to any one of claims 1 to 12, characterized in that the support base (8) is positioned below the platform (7), and the fastening element, in particular the fastening base (9), is positioned above the platform (7). 14. A platform (7) for an elevator system in a building under construction, the elevator system having an elevator shaft (2) that increases in height as the building height gradually increases during the construction phase of the building, the platform being particularly for an elevator system (1) according to any one of claims 2 to 13, characterized in that the platform (1) has a retaining device (12) capable of being effectively connected to a fastening base frame (9) to secure the platform. 15. A method for constructing an elevator device (1) for a building under construction, the elevator device having an elevator shaft (2) that increases in height as the building height gradually increases during the construction phase of the building, wherein the available lifting height of the elevator device (1) is adapted to the gradually increasing height of the building by performing at least one lifting process, during which a machine platform (7) with an elevator drive (5) and a suspension device (26) suspended from the machine platform (7) are lifted in the elevator shaft (2) by means of a lifting device (28). 7) The elevator car (3) is lifted, characterized in that, after the lifting process, the machine platform (7) is installed on at least one side of the smooth shaft wall (6) of the elevator shaft (2) in the following manner: the machine platform (7) is placed on at least one support base (8) fixed to the shaft wall by means of anchoring screws, anchor bolts or other fixing mechanisms, and at least one fastening base (9) is fixed to the shaft wall (6) by means of anchoring screws, anchor bolts or other fixing mechanisms, and the machine platform (7) is fastened by means of at least one fastening base (9).