Method for constructing an elevator shaft composed of shaft modules placed one on top of the other

Abstract

The invention relates to a method for constructing an elevator shaft for an elevator system, the elevator shaft being composed of shaft modules placed one on top of the other. In the method, a shaft module, which has preinstalled elevator components, and a pit assembly (59), which has two opposite guide rail pieces (76, 80) and a support device (50), are provided. The pit assembly (59) is arranged in a pit element, the support device (50) is fastened to a shaft floor of the elevator shaft, and said shaft module is placed onto the pit element. In an operating state of the elevator system, guide rails of the elevator system are supported on the shaft floor of the elevator shaft by means of the support device (50). The guide rail pieces (76, 80) and the support device (50) are connected to one another. In the operating state of the elevator system, the support device (50) is supported directly on the shaft floor of the elevator shaft.

Description

[0001] 2022P00372WÖ

[0002] - 1 -

[0003] Method for constructing an elevator shaft composed of stacked shaft modules

[0004] The invention relates to a method for creating an elevator shaft composed of stacked shaft modules for an elevator system according to the preamble of claim 1.

[0005] Installing an elevator is a complex and therefore costly process. In particular, constructing an elevator shaft, for example during building construction, and subsequently installing the elevator components within the shaft is quite involved. Typically, the elevator shaft is first constructed entirely within the building housing the elevator, and then the elevator system, with its components such as the cabin, counterweight, drive unit, and guide rails, is installed within the shaft. It has already been proposed to construct the elevator shaft from several prefabricated shaft modules, in which elevator components, such as guide rail sections or shaft doors, are at least partially pre-assembled.Prefabrication and pre-assembly do not take place on the construction site of the building housing the elevator, i.e., at the elevator installation site, but rather in a factory, i.e., at a manufacturing site. This approach requires less time at the installation site. Furthermore, this method has a positive impact on the quality of the installation and the occupational safety of the installation personnel.

[0006] EP 3960677 A1 describes a method for constructing an elevator shaft for an elevator system, composed of stacked shaft modules. The shaft modules are provided with pre-assembled elevator components, such as guide rails and shaft doors. A shaft module located at the bottom of the completed elevator shaft includes a pit assembly with two opposing guide rail sections and a support device. During operation of the elevator system, the guide rail sections rest on this support device from above. The support device rests on plates attached to the lower edge of the lowest shaft module and is thus held in place by these plates during transport of the lowest shaft module. During operation of the elevator system, the guide rails are supported by the support device and the aforementioned plates on the shaft floor of the elevator shaft. 2022P00372WÖ

[0007] - 2 -

[0008] US Patent 2022 / 024723 A1 also describes such a method, in which shaft modules are stacked on top of each other. The lowest shaft module has two opposing guide rail sections and a support device on which the guide rail sections are supported from above when the elevator is in operation.

[0009] In contrast, the object of the invention is, in particular, to propose a method that is flexible, cost-effective, and / or easy to implement. According to the invention, this object is achieved with a method having the features of claim 1.

[0010] In the inventive method for constructing an elevator shaft for an elevator system, composed of stacked shaft modules, a shaft module with pre-assembled elevator components and a pit assembly with two opposing guide rail sections and a support device are provided. The pit assembly is arranged in a pit element, the support device is fixed to a shaft floor of the elevator shaft, and the aforementioned shaft module is placed onto the pit element. During operation, the guide rails of the elevator system are supported on the shaft floor of the elevator shaft via the support device. According to the invention, the guide rail sections and the support device are connected to each other, and during operation, the support device rests directly on the shaft floor of the elevator shaft.The aforementioned procedural steps can be carried out in the specified order or in a different order.

[0011] When arranging the pit assembly within the pit element as described above, the pit assembly does not need to be moved directly into its final position, i.e., its position in the operating state of the elevator system. It is also possible to place the pit assembly into the pit element, initially secure it provisionally, and then align and finally secure it at a later time.

[0012] The prefabricated pit assembly can be arranged in differently designed pit elements, making it highly versatile. This allows for relatively large-scale prefabrication, thus reducing costs. The pit element can be installed as a 2022P00372WÖ unit embedded in the floor of the building where the elevator system is to be installed.

[0013] - 3 -

[0014] The pit must be constructed in advance. This allows for the advantageous use of a prefabricated pit assembly even in the case of an existing shaft pit, which, as described above, offers advantages in terms of installation time and quality. The pit element can also be designed as a special prefabricated shaft module in which the pit assembly is arranged. This shaft module can be referred to as a pit module, which, when stacking the shaft modules, is the first shaft module installed and thus forms the lowest shaft module of the elevator shaft.

[0015] Connecting the guide rail sections to the support structure in the pit assembly eliminates the need for additional plates to secure the support structure during transport. This makes the pit assembly particularly cost-effective. Furthermore, the elimination of these additional plates means that the support structure rests directly on the shaft floor when the elevator is in operation.

[0016] In the following, directional terms such as up, down, and sideways, or vertical and horizontal, refer to the orientation of the respective component in the operating state of the elevator system. The operating state of the elevator system is defined as the state after completion of installation and commissioning. In this operating state, the elevator system can transport people and / or goods in an elevator car between floors of the building housing the elevator.

[0017] The elevator system may also include a counterweight, which is connected to the elevator car by means of a load-bearing element, such as a rope or belt. During operation, the load-bearing element, and thus the elevator car and counterweight, can be moved within the elevator shaft formed by the shaft modules by means of the elevator's drive motor. It is also possible for the elevator system to have no counterweight. In this case, the elevator car is designed as a self-propelled elevator car, for example, equipped with a friction wheel drive.

[0018] The provision of a shaft module here means that the shaft module is manufactured at the production site and then transported to the construction site 2022P00372WÖ

[0019] - 4 - is transported. During the production of the shaft module, prefabricated elements can be used at the manufacturing site, or the shaft module can be manufactured from scratch. At the manufacturing site, elevator components are arranged within the shaft module, i.e., fixed within the shaft module. For example, guide rail sections and shaft doors can be arranged within a shaft module. Transport from the manufacturing site to the assembly site is primarily carried out by truck. It is also possible that further elevator components are arranged within a shaft module at the assembly site before or after the shaft modules are stacked on top of each other. It is also possible that individual shaft walls of the shaft modules are manufactured at the manufacturing site and transported to the assembly site. At the assembly site, shaft modules can then first be assembled from the shaft walls and subsequently stacked on top of each other.It is also possible that the aforementioned shaft walls can be placed individually or in combination onto a partially constructed elevator shaft, thus assembling the shaft modules.

[0020] A shaft module can be bounded by shaft walls, which can be made of materials such as concrete or wood. It is also possible for a shaft module to be bounded by a supporting structure, particularly one made of metal. Combinations of these designs are also conceivable.

[0021] The provision of the pit assembly, analogous to the provision of a shaft module, means that the pit assembly is prefabricated. This can take place wholly or partially at the manufacturing site or wholly or partially at the installation site. The arrangement of the pit assembly components relative to each other after provision corresponds, in particular, to the arrangement of the components relative to each other when the elevator system is in operation. This allows the components to be advantageously aligned correctly at an early stage, and especially before the actual installation of the elevator system.

[0022] The support structure of the pit assembly consists primarily of metal and has a T-shaped base, with a transverse element running along one side wall of the pit element. The support structure can be described as a so-called pit set and is essentially constructed like an "elevator pit assembly" as described in US 7,000,736 B2. Such pit sets are commercially available. 2022P00372WÖ

[0023] - 5 -

[0024] The support structure can consist of metal plates. However, it is also possible for the support structure to have sections, particularly metal profiles, arranged side by side and spaced apart, which are connected to each other by cross-connectors. These profiles are typically designed as corner profiles. A support structure constructed in this way requires little weight and is therefore lightweight. Such pit sets are also available on the market.

[0025] The support device is fixed or attached directly to the shaft bottom, in particular by being screwed to it. For this purpose, it has through holes through which fasteners, for example in the form of screws or anchor bolts, are inserted and held in corresponding holes in the shaft bottom.

[0026] The two guide rail sections of the pit assembly can be designed as either temporary or permanent guide rail sections. A permanent guide rail section, as defined here, is one that, together with other aligned guide rail sections, forms a continuous, vertical guide rail running throughout the elevator shaft. During operation, the elevator car or counterweight is guided along this guide rail in a known manner. A temporary guide rail section, as defined here, is one that is replaced by a permanent guide rail section during the installation of the elevator system. A temporary guide rail section generally has the same contour as a permanent guide rail section but is typically significantly shorter.A temporary guide rail section can, for example, have a length between 30 and 75 cm, while a final guide rail section can be significantly longer. The shorter length of the temporary guide rail section results in easier handling of the pit assembly.

[0027] The guide rail sections and the support structure of the pit assembly are connected to each other, in particular, by the same connection used when the elevator is in operation. Specifically, the guide rail sections and the support structure are bolted together.

[0028] The pit assembly can be fully completed before being arranged in the pit element 2022P00372WÖ

[0029] - 6 - are. After being arranged in the pit element, the pit assembly is connected to the pit element, in particular by bolting. For example, a rail bracket can be bolted to the pit element, in particular to a wall or a support of the pit element.

[0030] However, it is also possible to place an incomplete pit assembly within the pit element and complete it within the pit element. This procedure also involves placing a pit assembly within a pit element. In this case, the pit assembly is simultaneously provided and positioned within the pit element.

[0031] When the elevator is in operation, the guide rails, consisting of individual guide rail sections, are supported by the support device on the shaft floor. If the pit assembly contains permanent guide rail sections, these sections are supported as described. If the pit assembly contains temporary guide rail sections, the guide rail sections replacing the temporary guide rail sections are supported as described. The aforementioned permanent guide rail sections of the pit assembly serve primarily to guide the elevator car when the elevator is in operation.

[0032] The support device rests directly on the shaft floor of the elevator shaft. This means that the support device rests directly on the shaft floor and that at least no rigid element, such as a plate, and in particular no metal plate, is positioned between the support device and the shaft floor.

[0033] In an embodiment of the invention, the provided pit assembly additionally comprises at least one of the following elevator components:

[0034] - a buffer element,

[0035] - a buffer support to carry the buffer element,

[0036] - a rail bracket for fixing a guide rail section,

[0037] - an element of a speed limiter.

[0038] This allows for the advantageous arrangement of a particularly large number of components on the pit assembly, especially in the correct alignment with each other. In particular, two 2022P00372WÖ

[0039] - 7 -

[0040] Buffer elements, for example in the form of a spring buffer or a hydraulic buffer, can be arranged. These buffer elements are typically mounted on a buffer support to ensure sufficient clearance between the buffer element and the elevator car when the car rests on them. The buffer support is typically a hollow cuboid element, for example made of metal. It can have a height of between 60 and 90 cm.

[0041] In particular, two rail brackets, and especially two differently designed rail brackets, can be arranged on the pit assembly. These two rail brackets are positioned at the same height in the elevator shaft during operation and are referred to as a set of rail brackets. The rail brackets are also called brackets.

[0042] A guide rail section of the pit assembly is connected to a so-called "Z-bracket." A Z-bracket consists of two bracket parts that can slide relative to each other. One bracket part is connected to the guide rail section, and the other, when the elevator is in operation, is connected to the pit element or a shaft wall. This allows the distance between the guide rail section connected to the Z-bracket and the aforementioned shaft wall to be adjusted.

[0043] The other guide rail section of the pit assembly is connected to a so-called "omega bracket." An omega bracket is shaped so that, when the elevator is in operation, it encloses a space opposite a shaft wall or the profile of a shaft module, within which the elevator's counterweight can be repositioned. On one side of the omega bracket facing away from this enclosed space, the second guide rail section, opposite the one on the Z-bracket, is located. An omega bracket also has sliding parts, allowing the distance between the guide rail section connected to the omega bracket and the shaft wall or profiles of a shaft module to be adjusted.

[0044] When arranging the pit assembly within the pit element, the outward-facing parts of the rail brackets, directed towards the shaft wall or profiles of a shaft module, can be moved completely inwards or even removed. This can make arranging the pit assembly within the pit element particularly easy. It is also possible that the pit assembly has more 2022P00372WÖ

[0045] - 8 - as a set of rail brackets.

[0046] The aforementioned element of a speed limiter is specifically designed as a deflection pulley for a cable of the speed limiter. During operation of the elevator system, the speed limiter ensures that if a permissible maximum speed is exceeded, the elevator car is stopped by a safety brake.

[0047] In this embodiment of the invention, the two opposing guide rail sections are connected by a temporary connecting beam when the pit assembly is provided. This results in a particularly stable design of the pit assembly, in which the alignment of the individual elements of the pit assembly relative to each other is maintained with exceptional precision. A temporary connecting beam, analogous to a temporary guide rail section, is understood to be a connecting beam that is removed during the installation of the elevator system and serves a purpose only during installation or only in a specific section of the installation. The temporary connecting beam is therefore no longer present when the elevator system is in operation.

[0048] The connecting beam is designed, in particular, as a rigid beam, for example, made of one or more metal profiles. The length of the connecting beam is selected, in particular, such that the two guide rail sections of the pit assembly maintain the necessary distance between them during the operation of the elevator system. If the pit assembly has temporary guide rail sections, then the connecting beam is, in particular, bolted or permanently connected to the guide rail sections, for example, by welding or riveting. In the case of permanent guide rail sections in the pit assembly, there is, in particular, a detachable clamp connection between the connecting beam and the guide rail sections.

[0049] In this embodiment of the invention, a buffer support is arranged on the support device when the pit assembly is deployed. The buffer support and the connecting beam linking the two guide rail sections are designed and arranged relative to each other such that the connecting beam is guided away from the buffer support when moved away from the support device. This advantageously maintains the alignment of the elements relative to each other during movement of the connecting beam and thus of the guide rail sections with the rail brackets attached to them. 2022P00372WÖ

[0050] - 9 - received.

[0051] The aforementioned relocation of the connecting beam and the elements connected to it is necessary to bring the rail brackets to their final position and thus to their final height, at which they are connected to the pit element, i.e., in particular, screwed to a shaft wall. The connecting beam has, in particular, two parallel profiles, especially made of metal, between which one or, in particular, two buffer supports are arranged. The two profiles are connected, in particular, with two pins or screws per buffer support, such that the buffer support is positioned in the resulting gap. The profiles and—if present—the pins or screws are arranged relative to each other in such a way that, during the aforementioned relocation of the connecting beam, guidance is provided by the buffer support in two directions, one horizontal and one perpendicular to each other.

[0052] In one embodiment of the invention, the pit element is first moved into its final position, and then the pit assembly is arranged within the pit element. The final position of the pit element is understood to be its position in the operating state of the elevator system. In this case, the pit element is specifically designed as a pit embedded in the floor of the building in which the elevator system is to be installed. Alternatively, the pit element can be designed as a pit module in which the pit assembly is only arranged once the pit module has been positioned in its final location.

[0053] In this embodiment of the invention, after the pit assembly has been arranged in the pit element, the entire pit assembly is aligned. This means that the pit assembly is aligned as a single unit, without altering the arrangement of its individual components relative to one another. This simplifies the alignment process, as all elements of the pit assembly are aligned in a single operation. The alignment is performed, in particular, relative to reference lines that define the course of the elevator shaft and the position of individual elements in a known manner. As described above, the relative orientation of the pit assembly elements remains unchanged during this alignment process.

[0054] In an embodiment of the invention, temporary 2022P00372WÖ components are attached to the pit assembly.

[0055] - 10 -

[0056] Guide rail sections are arranged, with a rail bracket attached to each guide rail section. After the pit assembly is positioned within the pit element, the rail brackets are first moved into their final positions and secured. The temporary guide rail sections are then replaced with permanent guide rail sections. To do this, the connections between the temporary guide rails and the support device are removed. Since the permanent guide rail sections are moved to the same position as the temporary ones when replacing them, realignment of the permanent guide rail sections is unnecessary or at least easily accomplished. This makes aligning the elements particularly simple and quick.

[0057] In this embodiment of the invention, final guide rail sections are arranged on the pit assembly, with a rail bracket attached to each guide rail section. A positive-locking connection is also established between each guide rail section and its corresponding rail bracket. This positive-locking connection provides a particularly secure link between the rail bracket and the guide rail section, enabling safe transport of the pit assembly. The rail brackets are positioned in the pit assembly, specifically at their final height, so that the positive-locking connection does not need to be released during the installation of the elevator system. The positive-locking connection can be established, for example, by pinning.

[0058] In this embodiment of the invention, the pit assembly is arranged within the pit element before the pit element is moved into its final position. The pit element is thus designed, in particular, as a pit module in which the pit assembly is already arranged before it is positioned at the production site. The pit element is, in particular, open at the bottom. The guide rail sections of the pit assembly are, in this case, designed, in particular, as final guide rail sections.

[0059] The pit assembly is pre-assembled within the pit element at the manufacturing site, allowing the pit element and the pit assembly to be transported together from the manufacturing site to the installation site. This enables a significant number of the elevator installation steps to be completed at the manufacturing site. 2022P00372WÖ

[0060] - 11 -

[0061] In this embodiment of the invention, the pit assembly comprises a total of four guide rail sections, which are specifically designed as final guide rail sections. This advantageously allows for a particularly large number of elements to be arranged on the pit assembly, thus enabling particularly simple installation of the elevator system. During operation, two of the four guide rail sections guide the elevator car, and two guide the counterweight as it moves within the elevator shaft.

[0062] Further advantages, features, and details of the invention will become apparent from the following description of exemplary embodiments and from the drawings, in which identical or functionally equivalent elements are provided with identical reference numerals. The drawings are schematic only and not to scale.

[0063] This shows:

[0064] Fig. 1 shows an elevator system with one cabin in an elevator shaft composed of shaft modules,

[0065] Fig. 2 shows a snapshot of a shaft module being placed on a pit element of an unfinished elevator shaft of an elevator system.

[0066] Fig. 3 shows a pit element with a pit assembly arranged therein in a side view and

[0067] Fig. 4 shows a pit assembly with two guide rail sections and a support device in a top view.

[0068] According to Fig. 1, an elevator system 10 has an elevator shaft 12 for a three-story building, which in the present embodiment is composed of two base modules 16 and a top module 18. Depending on the number of floors, the elevator shaft 12 can include further base modules 16. The aforementioned shaft modules 16, 18 are prefabricated in a factory and thus at a production site and fitted with elevator components. They are then transported to the construction site of the building housing the elevator system 10 and assembled. The elevator shaft 12 shown in Fig. 1 has a pit element 14, which is designed as a pit embedded in a floor 15 of the building (not shown) in which the elevator system 10 is installed. The pit element 14 was used in the construction of the 2022P00372WÖ

[0069] - 12 -

[0070] A base module 16 is placed on top of elevator shaft 12. The shaft floor 17 of elevator shaft 12 is therefore lower than the floor 15 of the building (not shown).

[0071] Figure 2 shows how the first base module 16 is placed onto a pit element 14 from above using a crane 20. In the example shown in Figure 2, the pit element 14 is designed as a prefabricated shaft module, which was also placed on the floor 15 of the building (not shown) using the crane 20 and thus brought into its final position. In this case, the pit element 14 can be referred to as a pit module. The shaft floor 17 of the elevator shaft 12 is at the same level as the floor 15 of the building (not shown). After the first base module 16 has been placed onto the pit element 14, the second base module 16 and then the top module 18 are placed on top in the same way, thus closing off the elevator shaft 12 at the top.

[0072] The basic module 16 contains pre-assembled elevator components, of which only a shaft door 19 is shown in Fig. 2. In addition to the shaft door 19, the basic module 16 also contains guide rail sections (see 56, 60, 62 in Fig. 3) on which a car 22 (see Fig. 1) and a counterweight 30 (see Fig. 1) are guided when the elevator system 10 is in operation. A pit assembly 59, not shown in Fig. 2, was already installed in the pit element 14 in Fig. 2, which is in the form of the pit module, at the manufacturing site. This pit assembly 59 is described in more detail in connection with Figs. 3 and 4. Thus, the pit assembly 59 was already installed in the pit element 14 before the pit element 14 was moved into its final position.

[0073] In the pit element 14 shown in Fig. 1, in the form of the pit embedded in the ground, a pit assembly 59 (not shown in Fig. 1) was also installed during the construction of the elevator shaft 12. The pit assembly 59 was prefabricated at the manufacturing site, transported to the installation site, and positioned in the prepared pit. Thus, after the pit element 14 was moved into its final position, the pit assembly 59 was installed within the pit element 14.

[0074] The elevator system 10 of Fig. 1 also includes the cabin 22, which can be moved vertically along guide rails (not shown in Fig. 1) in the elevator shaft 12. For this purpose, the elevator system 10 has a suspension element 24, the first end 26 of which is located in the top module 2022P00372WÖ.

[0075] - 13 -

[0076] The cable is fixed at the top module 18. It then runs around the bottom of the cabin 22 and is guided over a drive motor 28 located opposite the first end 26 of the suspension element 24 in the top module 18. From there, it runs through a suspension of a counterweight 30 to its second end 32, which is fixed in the area of ​​the drive motor 28. The drive motor 28 can move the suspension element 24 and thus the cabin 22 in the elevator shaft 12. The cabin 22 is connected via a suspension cable 34 to an elevator control unit 36 ​​located in the top module 18. The suspension cable 34 enables power supply and communication with the cabin 22.

[0077] The pit element 14 in the form of a pit module (as shown in Fig. 2) has, according to Fig. 3, a vertically extending first side wall 40 and an opposing second side wall 42. The side walls 40, 42, like a front wall and a rear wall of the pit element 14, are constructed of metal profiles.

[0078] A first guide rail section 56 is fixed to the first side wall 40 via a first rail bracket 54 in the form of a so-called Z-bracket. A second, opposite guide rail section 60 is fixed to the second side wall 42 via a second rail bracket 58 in the form of a so-called Omega bracket. An optional positive-locking connection in the form of a pin (not shown) exists between the guide rail sections 56, 60 and their respective associated rail brackets 54, 58.

[0079] The first guide rail section 56 and the second guide rail section 60 are screwed to a support device 50 at their lower ends and thus connected to the support device 50. In the example shown in Fig. 3, the guide rail sections 56 and 60 are designed as permanent guide rail sections. They are therefore not replaced by other guide rail sections during the construction of the elevator shaft 12, but serve to guide the cabin 22 when the elevator system 10 is in operation. When the elevator system 10 is in operation, the guide rails of the elevator system 10, consisting among other things of the guide rail sections 56 and 60, are supported directly on the shaft floor 17 via the support device 48.

[0080] The first and second guide rail sections 56, 60 are connected via a horizontally extending temporary connecting beam 51. The connecting beam 51 is designed as a rigid beam having two parallel metal profiles. The 2022P00372WÖ

[0081] - 14 -

[0082] Connecting beam 51 is connected at one end to the first guide rail section 56 and at the other end to the second guide rail section 60 by means of a detachable clamp connection. Connecting beam 51 is removed during the construction of the elevator shaft 12.

[0083] The second rail bracket 58, in the form of an omega bracket, is designed such that the second guide rail section 60 is spaced from the second side wall 42. In the resulting space, the counterweight 30 travels during operation of the elevator 10. To guide the counterweight 30, a third guide rail section 62 and a fourth guide rail section (concealed by the third guide rail section in Fig. 3 and therefore not visible) are fixed to the omega brackets 58. The third and fourth guide rail sections 62 and 62 are also designed as final guide rail sections and are connected to the support device 50. During operation of the elevator 10, they are also supported on the shaft floor 17 via the support device 50.

[0084] Two buffers 52 are arranged on the support device 50. Each buffer 52 has a buffer support 53 projecting upwards from the support device 50 and a buffer element 55 arranged at the top of the buffer support. The connecting beam 51, which connects the two guide rail sections 56, 60, is arranged such that the buffer supports 53 are positioned between its two metal profiles (see Fig. 4).

[0085] Furthermore, an element 57 of a speed limiter (not shown) is arranged on the support device 50. The element 57 is designed as a deflection pulley for a cable of the speed limiter.

[0086] The four guide rail sections 56, 60, 62, the rail brackets 54, 58, the support device 50, the connecting beam 51, the buffers 52 and the element 57 of the speed limiter thus form a pit assembly 59, which was arranged in the pit element 14 in the form of a pit module.

[0087] Fig. 4 shows a pit assembly 59, which is basically constructed the same way as the pit assembly 59 in Fig. 3. As can be seen from Fig. 4, the support device 50 has a predominantly T-shaped basic form. The pit assembly 59 in Fig. 4 has not yet been 2022P00372WÖ

[0088] - 15 - is arranged in a pit element. It was therefore manufactured at the production site and transported to the construction site. In contrast to the pit assembly 59 in Fig. 3, the pit assembly 59 in Fig. 4 has only first and second guide rail sections 76, 80 and no third and fourth guide rail sections. The first and second guide rail sections 76, 80 are designed as temporary guide rail sections, which are replaced by permanent guide rail sections during the construction of the elevator shaft 12. The connections between the temporary guide rail sections 76, 80 and the connecting support 51 are not designed as clamp connections, but as screw connections.

[0089] In the top view shown in Fig. 4, the two parallel metal profiles 61 of the connecting beam 51 are visible. The metal profiles 61 are connected by a total of four pins 63, which are arranged such that each buffer support 53 passes through the opening formed by two pins 63 and the two metal profiles 61. The arrangement of the connecting beam 51 and the buffer supports 53 is designed such that when the connecting beam 51 is moved upwards, i.e., away from the support device 50, the movement is guided by the buffer supports 53, meaning that the metal profiles 61 and each pair of pins 63 bear against the buffer supports 53 or slide along them. In the pit assembly 59 shown in Fig. 4, no buffer elements are yet arranged on the buffer supports.

[0090] During the construction of the elevator shaft 12, a pit assembly 59, as shown in Fig. 4, is arranged in a pit element. For this purpose, the rail brackets 56, 58 can be fully pushed together or the outer rail bracket sections can be removed. After the pit assembly 59 has been arranged in a pit element, the entire pit assembly 59 is aligned with reference strings, and then the support device 50 is bolted to the shaft base 17. Next, the connections between the temporary guide rail sections 76, 80 and the support device 50 are disconnected, and then the rail brackets 54, 58, together with the temporary guide rail sections 76, 80 and the connecting beam 51, are guided by the buffer supports 53 to their correct height and bolted to the pit element.After the rail brackets are screwed to the pit element, the temporary guide rail pieces 76, 80 are removed together with the connecting beam 51 and final guide rail pieces are installed.

[0091] If the necessary work on the pit assembly 59 and on the pit element 2022P00372WÖ

[0092] Once the first basic module 16 is completed, a shaft module in the form of the first base module 16 is placed onto the pit element using crane 20. Subsequently, the remaining required shaft modules, for example, further base modules 16 and the top module 18, are placed on top using crane 20. After the top module 18 is in place, thus completing the elevator shaft at the top, the installation of the elevator system can continue and be completed.

[0093] Finally, it should be noted that terms such as "comprising," "encompassing," etc., do not exclude other elements or steps, and terms such as "a" or "an" do not exclude a plurality. Furthermore, it should be noted that features or steps described with reference to one of the above embodiments may also be used in combination with other features or steps from other embodiments described above. Reference numerals in the claims are not to be considered as a limitation.

Claims

1. 2022P00372WÖ - 17 - Patent claims 1. Method for constructing an elevator shaft (12) composed of stacked shaft modules (16, 18) for an elevator system (10) comprising the following method steps: - Providing a shaft module (16) with pre-assembled elevator components (19), - Providing a pit assembly (59) with two opposing guide rail sections (56, 60; 76, 80) and a support device (50), - Arranging the pit assembly (59) in a pit element (14), - Fixing the support device (50) to a shaft floor (17) of the elevator shaft (12) and - Placing the shaft module (16) onto the pit element (14), wherein guide rails (56, 60) of the elevator system (10) are supported on the shaft floor (17) of the elevator shaft (12) via the support device (50) in an operating state of the elevator system (10), characterized in that - the guide rail pieces (56, 60; 76, 80) and the support device (50) are connected to each other and - the support device (50) rests directly on the shaft floor (17) of the elevator shaft (12) in the operating state of the elevator system (10).

2. Method according to claim 1, characterized in that the provided pit assembly (59) additionally comprises at least one of the following elevator components: - a buffer element (55), - a buffer support (53) for supporting the buffer element (55), - a rail bracket (54, 58) for fixing a guide rail section (56, 60; 76, 80), - an element (57) of a speed limiter. 2022P00372WÖ - 18 - 3. Method according to claim 1 or 2, characterized in that when providing the pit assembly (59) the two opposing guide rail pieces (56, 60; 76, 80) are connected with a temporary connecting carrier (51).

4. Method according to claim 3, characterized in that when the pit assembly (59) is provided, a buffer support (53) is arranged on the support device (50) and the buffer support (53) and the connecting beam (51) connecting the two guide rail pieces (76, 80) are designed and arranged to each other in such a way that the connecting beam (51) is guided away from the buffer support (53) when it is moved away from the support device (50).

5. Method according to one of claims 1 to 4, characterized in that first the pit element (14) is brought into its final position on the shaft floor (17) of the elevator shaft (12) and then the pit assembly (59) is arranged in the pit element (14).

6. Method according to claim 5, characterized in that after arranging the pit assembly (59) in the pit element (14) the entire pit assembly (59) is aligned.

7. Method according to claim 5 or 6, characterized in that temporary guide rail pieces (76, 80) are arranged on the pit assembly (59), wherein a rail bracket (54, 58) is attached to each guide rail piece (76, 80), and after arranging the pit assembly (59) in the pit element (14), the rail brackets (54, 58) are first brought into their final position and then the temporary guide rail pieces (76, 80) are replaced with final guide rail pieces (56, 60). 2022P00372WÖ - 19 - 8. Method according to claim 5 or 6, characterized in that final guide rail pieces (56, 60) are arranged on the pit assembly, wherein a rail bracket (54, 58) is attached to each guide rail piece (56, 60), and a positive locking connection is established between a guide rail piece (56, 60) and the associated rail bracket (54, 58).

9. Method according to one of claims 1 to 4, characterized in that the pit assembly (59) is arranged in the pit element (13) before the pit element (14) is brought into its final position.

10. Method according to claim 9, characterized in that the pit assembly (59) comprises a total of four guide rail pieces (56, 60, 62).

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