Method for installing an elevator

Abstract

The invention relates to a method for installing a lift system. In the method according to the invention, a plurality of prefabricated shaft modules (14, 16, 17, 18) are provided. The shaft modules (14, 16, 17, 18) are placed on top of one another to form a lift shaft (12). A base module (14) and a first intermediate module (16) each have at least one guide rail piece (40) after provision. According to the invention, an upper end (46) of the guide rail piece (40) of the base module (14) is arranged downwardly spaced apart from an upper edge (48) of the base module (14). The guide rail piece (40) of the first intermediate module (16) is moved vertically downwards after being placed on the base module (14) until it is supported on the guide rail piece (40) of the base module (14). Before the guide rail piece (40) of the first intermediate module (16) is moved downwards, a lower end (52) of the guide rail piece (40) of the first intermediate module (16) is arranged upwardly spaced apart from a lower edge (54) of the first intermediate module (16) and an upper end (56) of the guide rail piece (40) of the first intermediate module (16) is arranged downwardly spaced apart from an upper edge (58) of the first intermediate module (16).

Description

[0001] The invention relates to a method for installing an elevator system according to the preamble of claim 1.

[0002] Installing an elevator is a complex and therefore costly process. In particular, constructing the elevator shaft, for example during building construction, and subsequently installing the 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 car, counterweight, drive unit, and guide rails, is installed within the shaft. It has been proposed to construct the elevator shaft from several prefabricated modules, in which the necessary components, such as guide rail sections, are at least partially pre-assembled. This prefabrication and pre-assembly would not take place on the building's construction site, but rather in a factory.This approach requires less time. Furthermore, it has a positive impact on the quality of the installation and the occupational safety of the installation personnel. After assembling the individual shaft modules to form an elevator shaft, the individual guide rail sections must be joined to form continuous guide rails, with the individual guide rail sections touching, particularly at their end faces, to allow one guide rail section to be supported by the guide rail section directly below it.

[0003] EP 2559647 A1 describes a method for installing an elevator system in which a plurality of prefabricated shaft modules are provided. The shaft modules are stacked on top of each other in such a way that the shaft chambers of the shaft modules are vertically aligned and form a vertically extending elevator shaft. An elevator car is arranged within the resulting elevator shaft so as to be vertically movable. After being provided, each shaft module has a guide rail section, which together form a vertically extending guide rail for the elevator car within the elevator shaft formed by the shaft modules. The individual guide rail sections of the shaft modules protrude from the respective shaft module after the aforementioned provision of the shaft modules.

[0004] WO 2022 / 233803 A1 also describes a method for installing an elevator system from a plurality of prefabricated shaft modules.

[0005] In contrast, the object of the invention is, in particular, to propose a method for installing an elevator system that enables simple installation with the lowest possible risk of damage to components used during installation. According to the invention, this object is achieved by a method with the features of claim 1.

[0006] The inventive method for installing an elevator system comprises at least the following process steps: Providing a plurality of shaft modules, wherein the shaft modules are prefabricated and intended to be stacked on top of each other and wherein each shaft module encloses a shaft space and stacking the said shaft modules in such a way that the shaft spaces of the shaft modules are vertically aligned and form a vertically extending elevator shaft in which an elevator car of the elevator system can be movably arranged.

[0007] The aforementioned multiple shaft modules comprise a base module, a first intermediate module designed to be placed on top of the base module, and optionally further intermediate modules. The height of the intermediate modules corresponds, in particular, to the floor height of the building housing the elevator system. Thus, one intermediate module is provided for each floor of the building. The height of the base module may differ from the aforementioned floor height.

[0008] After being deployed, each shaft module has at least one guide rail section. Within the elevator shaft formed by the shaft modules, the guide rail sections of the individual shaft modules form a vertically extending guide rail for the elevator car. After being placed on the base module, the guide rail section of the first intermediate module is moved vertically downwards until it rests on the guide rail section of the base module. According to the invention, an upper end of the guide rail section of the base module is spaced downwards from an upper edge of the base module.

[0009] The aforementioned distance between the upper end of the guide rail section of the base module and the upper edge of the base module advantageously allows other components to be placed on the base module after the base module has been positioned and before the first intermediate module is installed—that is, before the elevator installation begins in the building where the elevator will be housed—without risking damage to the guide rail section of the base module. This facilitates handling of the base module and other elevator components, such as intermediate modules. The shaft modules can thus be easily stored temporarily, and in particular stacked on top of each other, before the elevator installation begins. The aforementioned lowering of the guide rail section of the first intermediate module enables the individual guide rail sections to be easily and therefore quickly and cost-effectively joined together to form a guide rail.

[0010] In the following, directional terms such as top, bottom, and side, or vertical and horizontal, refer to the orientation of the respective component, in particular a shaft module or a guide rail section, when assembled. This orientation corresponds to the orientation of the respective component in an operating state of the elevator system. The operating state of the elevator system is understood to be the state after completion of installation and commissioning. In this operating state, people and / or goods can be transported in the elevator car between floors of the building housing the elevator system.

[0011] The shaft modules, and thus the guide rail sections, can be transported from the factory where they are manufactured to the construction site of the building housing the elevator system in an orientation other than that specified. At the start of the assembly process, the base module, the lowest shaft module, is positioned, particularly on a foundation of the building. The first intermediate module, the lowest intermediate module, is then placed on top of the base module to form the elevator shaft. Subsequently, further shaft modules, either as additional intermediate modules or as a top module to close off the elevator shaft, can be placed on top of each uppermost intermediate module until the elevator shaft reaches its intended height.The arrangement of the basic module and the subsequent placement of the first intermediate module and any further shaft modules is carried out in particular with a crane.

[0012] The shaft modules can be bounded by shaft walls, which can be made of materials such as concrete or wood. However, it is also possible for the shaft modules to be bounded by a supporting structure, particularly made of metal.

[0013] 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 a 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. The elevator system may also be designed as a so-called drum elevator in this case.

[0014] After the above-described setup, and thus even before the aforementioned stacking of the shaft modules, the shaft modules have at least one guide rail section. This guide rail section is therefore positioned within the respective shaft module during setup, in particular attached to a shaft wall of the shaft module. After the shaft modules are stacked, the guide rail sections of the individual shaft modules are connected to each other in such a way that together they form a continuous, vertically extending guide rail for the elevator car within the elevator shaft created by the shaft modules. A guide rail section has an elongated shape and typically a T-shaped profile.

[0015] The guide rail section is fixed to a shaft wall or a support beam defining the shaft module, particularly by means of at least one, and especially at least two, so-called rail brackets. The rail brackets are particularly multi-part, with a first bracket section being fixed to the shaft wall or support beam, for example, by screwing it in place, and a second bracket section being connected to the guide rail section by means of rail clamps or rail clips. The guide rail section is clamped, in particular, between the rail clamps and the second bracket section. The first and second bracket sections are screwed together, and their alignment relative to each other can be adjusted to align the guide rail section. Different types of brackets can be used, such as Z-brackets, L-brackets, or Omega-type brackets.An omega bracket is designed such that a travel path for a counterweight of the elevator system runs between an inner side of the omega bracket and the side wall to which the omega bracket is fixed.

[0016] The elevator car and, if present, the elevator counterweight are guided within the elevator shaft by two opposing guide rails. This means that two or four guide rail sections are installed in each shaft module when the modules are being installed. In addition to the guide rail sections, other elevator components can also be installed within the shaft modules during this process.

[0017] The guide rail section of the base module, when the elevator is in operation, rests primarily on the floor of the elevator shaft, and thus specifically on the foundation of the building housing the elevator. This guide rail section can therefore be supported directly or indirectly, via another component of the elevator system, on the floor of the elevator shaft. The guide rail section of the base module is typically positioned in its final position—that is, its position in the operating state of the elevator—within the base module itself. However, it is also possible that, after being placed on the building's foundation, the guide rail section is moved vertically downwards until it rests on the shaft floor.

[0018] The upper end of the guide rail section of the base module is positioned at a downward distance from the upper edge of the base module. The guide rail section of the base module therefore does not project upwards from the base module. In particular, the guide rail section of the base module also does not project downwards from the base module. This distance can be, for example, 0.5 to 5 cm, and in particular 1 cm.

[0019] The elevator shaft of the elevator system can be designed so that a single elevator car can be moved vertically within it. However, it is also possible for the shaft to be designed so that more than one, for example, two or three elevator cars, can be moved vertically side by side and independently of each other. The elevator shaft can thus be designed as a so-called single shaft or a multi-shaft. In the multi-shaft design, the shaft modules are specifically designed so that they are stacked on top of each other to form the elevator shaft; that is, no shaft modules are arranged side by side. However, it is also conceivable that shaft modules are arranged both side by side and on top of each other to form the elevator shaft.

[0020] In addition to the aforementioned process steps of providing and stacking shaft modules, the process includes in particular the further process steps of providing an elevator car and optionally a counterweight and arranging the elevator car and optionally the counterweight in the elevator shaft in such a way that the elevator car and optionally the counterweight can be moved vertically in the elevator shaft.

[0021] According to the invention, before the aforementioned downward displacement of the guide rail section of the first intermediate module, and thus after the first intermediate module has been provided, a lower end of the guide rail section of the first intermediate module is spaced upwards from a lower edge of the first intermediate module, and an upper end of the guide rail section of the first intermediate module is spaced downwards from an upper edge of the first intermediate module. The guide rail section of the first intermediate module therefore does not protrude either upwards or downwards from the first intermediate module. These distances can be, for example, 0.5 to 5 cm, and in particular 1 cm. The distance to the upper edge and the distance to the lower edge can be the same or different. This significantly reduces the risk of the guide rail section of the first intermediate module being damaged before or during placement on the base module.Furthermore, handling the first intermediate module is simplified. The shaft modules can thus be easily stored temporarily, and in particular stacked on top of each other, before the elevator installation begins.

[0022] In this embodiment of the invention, when the first intermediate module is provided, the guide rail section of the first intermediate module is arranged within the first intermediate module such that it runs vertically. To ensure that the ends of the guide rail section maintain a distance from the edge of the first intermediate module despite the vertical orientation, the length of the guide rail section is less than the height of the first intermediate module. The vertical orientation of the guide rail section advantageously allows it to be moved vertically downwards to form a continuous guide rail until it rests on the guide rail section of the base module. This enables a particularly simple and therefore cost-effective installation of the elevator system.

[0023] As an alternative to the aforementioned vertical alignment of the guide rail section of the first intermediate module, when providing the first intermediate module, the guide rail section of the first intermediate module can be arranged within the first intermediate module in such a way that it is pivoted relative to the vertical and thus inclined relative to the vertical. The guide rail section of the first intermediate module then has a length that corresponds to the height of the first intermediate module.

[0024] To form a continuous guide rail, such a guide rail section is first pivoted so that it runs vertically and then shifted vertically downwards until it rests on the guide rail section of the base module. This arrangement of the guide rail section of the first intermediate module, pivoted relative to the vertical, advantageously allows the ends of the guide rail section to maintain a distance from the edges of the first intermediate module even when the length of the guide rail section corresponds to the height of the first intermediate module. This advantageously means that when stacking more than one intermediate module, the guide rail sections do not need to be shifted further and further vertically downwards with each additional intermediate module to form a continuous guide rail.

[0025] In an embodiment of the invention, when the first intermediate module is provided, a connecting tab is attached to one end of the guide rail section of the first intermediate module for connecting the guide rail section of the first intermediate module to an adjacent guide rail section, such that the connecting tab does not project beyond said end of the guide rail section of the first intermediate module in a principal direction of extension. In the case of an elongated guide rail section, the principal direction of extension refers to its length, and in the operating state of the elevator system, therefore, to its vertical direction. The connecting tab has, in particular, an elongated cuboid shape with several through holes or threaded holes.To prevent the connecting tab from protruding beyond the aforementioned end of the guide rail section, it is attached to the aforementioned end of the guide rail section in such a way that it does not extend outwards from the aforementioned end with respect to the guide rail section, but inwards.

[0026] To form and secure a continuous guide rail, the guide rail sections of adjacent shaft modules are firmly connected using a connecting bracket. The connecting bracket is screwed to the two adjacent guide rail sections. To enable this, the connecting bracket must extend beyond the ends of both guide rail sections. The screws used to connect the guide rail section and the connecting bracket pass through the through holes or threaded holes in the connecting bracket, which are aligned with corresponding through holes or threaded holes in the guide rail sections. Such connecting brackets are available in various designs on the market.

[0027] Attaching a connecting tab to one end of the guide rail section advantageously provides the connecting tab for joining the guide rail sections after the shaft modules have been stacked, precisely where the connecting tab is needed. This eliminates the need to provide the connecting tab separately, which would otherwise cause additional effort and thus costs.

[0028] The connecting tab is attached to the end of the guide rail section in such a way that, to connect the guide rail section to an adjacent guide rail section, it is first removed from the aforementioned end of the guide rail section and then connected to the two guide rail sections. With the described cuboid shape of the connecting tab featuring through holes or threaded holes, this means that the connecting tab is attached "upside down," in particular screwed, to the end of the guide rail section of the first intermediate module using the through holes or threaded holes, which are intended for connection to an adjacent guide rail section during the operating state of the elevator system.

[0029] Alternatively, the connecting tab is attached to the end of the guide rail section in such a way that, to connect the guide rail section to an adjacent guide rail section, it is pivoted relative to the aforementioned end of the guide rail section and then connected to the aforementioned adjacent guide rail section. With the described cuboid shape of the connecting tab featuring through holes or threaded holes, this means that the connecting tab is attached, in particular screwed, to the end of the guide rail section of the first intermediate module using only one of at least two adjacent through holes or threaded holes.To connect the guide rail section of the first intermediate module to an adjacent guide rail section, the fastening of the connecting tab, in particular the screw connection to the guide rail section of the first intermediate module, is loosened. The connecting tab is then pivoted around the loosened connection into the position necessary for connection with the adjacent guide rail section. Finally, the connecting tab is connected to the two adjacent guide rail sections using all through-holes or threaded holes, in particular by screwing. When preparing the first intermediate module, the connecting tab can also be attached to the guide rail section of the first intermediate module with an additional connection, which is loosened before pivoting the connecting tab as described.

[0030] In an embodiment of the invention, several intermediate modules are provided and stacked on top of each other, the intermediate modules being, in particular, identical in design. The first intermediate module is placed on the base module as described above. A second intermediate module is then placed on top of the first. This process is repeated up to a top intermediate module. After being placed on the shaft module below, the guide rail sections of each intermediate module are moved vertically downwards until they rest on the guide rail section of the shaft module below. This downward movement occurs, in particular, first at the guide rail section of the first intermediate module, then at the guide rail section of the second intermediate module, and finally at the guide rail section of the top intermediate module.

[0031] In one embodiment of the invention, an additional guide rail section is placed on top of the guide rail section of an uppermost intermediate module. This is particularly advantageous when providing and stacking several intermediate modules with guide rail sections that are shorter than the height of the intermediate modules. With each such intermediate module that is added, the corresponding guide rail section must be moved further downwards until it can rest on the guide rail section below it. The additional guide rail section serves to compensate for this movement, thus ensuring that even the uppermost intermediate module has a sufficiently long guide rail section, in this case a two-part guide rail section.The additional guide rail section is placed on top of the guide rail section of the uppermost intermediate module, particularly after the guide rail section of the uppermost intermediate module has been moved vertically downwards.

[0032] For example, if 20 intermediate modules are stacked on top of each other and the respective guide rail sections are 2 cm shorter than the height of the intermediate modules, then the guide rail section of the uppermost intermediate module must be shifted downwards by 40 cm. The additional guide rail section should then advantageously have a length of 40 cm.

[0033] In this embodiment of the invention, a top module is provided as a further shaft module, which is placed on top of the uppermost intermediate module. This closes off the elevator shaft at the top. After being provided, the top module also has a guide rail section, which, after being placed on the uppermost intermediate module, is moved vertically downwards to form the guide rail for the elevator car. The guide rail section of the top module is moved vertically downwards, in particular until it rests on the guide rail section of the uppermost intermediate module or, if an additional guide rail section is provided, on the additional guide rail section from above. During the provision of the top module, a drive and other components of the elevator system are arranged in the top module. The top module can, for example, be designed like a top module described in WO 2022 / 233803 A1.

[0034] In particular, a lower end of the guide rail section of the top module has a vertical distance upwards from the lower edge of the top module.

[0035] It is also possible that the top module, which closes off the elevator shaft at the top, does not have a guide rail section, thus forming a kind of machine room.

[0036] If an additional guide rail section is provided, it is positioned within the top module, particularly during its deployment. This advantageously eliminates the need for separate transport and deployment of the additional guide rail section, as it is transported and deployed within the top module. Furthermore, positioning the additional guide rail section within the top module allows the top module to be placed on top of the uppermost intermediate module, ensuring the additional guide rail section is positioned precisely where it is required.

[0037] 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.

[0038] This shows: Fig. 1 an elevator system with an elevator car in an elevator shaft composed of three shaft modules, Fig. 2 a snapshot during the placement of a top module onto an unfinished elevator shaft of an elevator system, Fig. 3 an elevator shaft composed of five shaft modules before the lowering of guide rail sections, Fig. 4 the elevator shaft made of Fig. 3 After lowering the guide rail sections, Fig. 5, ends of adjacent guide rail sections with a connecting tab arranged at one end of a guide rail section, before lowering the upper guide rail section, Fig. 6, the ends from Fig. 5 After lowering the upper guide rail section and connecting the adjacent guide rail sections with the connecting tab, Fig. 7 ends of adjacent guide rail sections with a opposite Fig. 5 alternative arrangement of the connecting tab, Fig. 8 an elevator shaft composed of five shaft modules before lowering guide rail sections with a opposite Fig. 3 alternative arrangement of the guide rail pieces in the shaft modules and Fig. 9 the elevator shaft made of Fig. 8 after lowering the guide rail sections,

[0039] 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 three shaft modules: a base module 14, a first intermediate module 16, and a top module 18. Depending on the number of floors, the elevator shaft 12 can include further intermediate modules 16. The aforementioned shaft modules 14, 16, and 18 are prefabricated in a factory and fitted with elevator components. They are then transported to the construction site and assembled. The described prefabrication, fitting with elevator components, and transport of the shaft modules 14, 16, and 18 can be described as the provision of the shaft modules 14, 16, and 18.

[0040] Each shaft module 14, 16 and 18 encloses a shaft space 15. The shaft modules 14, 16, 18 are stacked on top of each other in such a way that the shaft spaces 15 of the shaft modules 15, 16, 18 are vertically aligned and form the vertically extending elevator shaft 12 in which an elevator car 22 of the elevator system 10 is arranged in a movable manner.

[0041] In Fig. 2 The figure shows how the top module 18 is placed onto the first intermediate module 16 from above using a crane 20. The first intermediate module 16 was previously placed onto the base module 14 in the same way. The base module 14 rests on a foundation of the elevator shaft 12 (not shown). The base module 14 and the first intermediate module 16 form an open, unfinished elevator shaft, which is closed off by the placement of the top module 18.

[0042] The elevator system 10 of the Fig. 1 It also features elevator cabin 22, which runs along in the Fig. 1 guide rails not shown (see 66 in Fig. 4 The elevator system 10 can be moved vertically in the elevator shaft 12. For this purpose, the elevator system 10 has a suspension element 24, the first end 26 of which is fixed in the top module 18. It then runs around the bottom of the elevator car 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 elevator car 22 in the elevator shaft 12. The elevator car 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 elevator car 22.

[0043] The individual shaft modules can be bounded by shaft walls, which can be made of concrete or wood, for example. It is also possible for the shaft modules to be bounded by a supporting structure, particularly made of metal. The elevator shaft can also have more than one intermediate module, with the individual intermediate modules being of identical construction.

[0044] The elevator shaft 12 according to Fig. 3 The shaft module consists of a base module 14, a first intermediate module 16, two further intermediate modules 17, and a top module 18, i.e., a total of five shaft modules. During the provision of the shaft modules 14, 16, 17, 18, a guide rail section 40 was installed in each shaft module. The guide rail sections 40 were screwed to a wall of the respective shaft module using rail brackets (not shown). The following describes the procedure for only one guide rail section per shaft module. Two guide rail sections for guiding the elevator car 22 and two guide rail sections for guiding the counterweight 30 are installed in each shaft module. The procedure for all guide rail sections is analogous to the procedure described below for one guide rail section.

[0045] The guide rail section 40 of the base module 14 was arranged in the base module 14 such that a lower end 42 of the guide rail section 40 of the base module 14 is flush with a lower edge 44 of the base module 14. This allows the guide rail section 40 of the base module 14 to be supported on the floor of the elevator shaft 12. It is also possible for at least one metal plate and / or at least one block to be attached to the lower end of the guide rail section of the base module, which are flush with the lower edge of the base module.

[0046] An upper end 46 of the guide rail section 40 of the base module 14 is spaced downwards from an upper edge 48 of the base module 14. The guide rail section 40 of the base module 14 thus ends below the upper edge 48 of the base module 14. A connecting tab 50 is arranged at the upper end 46 of the guide rail section 40 of the base module 14, onto which, in connection with the Fig. 5 bis 7 The connecting tab 50 is attached to the guide rail section 40 of the base module 14 in such a way that it does not project beyond the upper end 46 of the guide rail section 40 of the base module 14 in a main extension direction of the guide rail section, and thus in the vertical direction.

[0047] The guide rail section 40 of the first intermediate module 16, which is mounted on the base module 14, is arranged above the guide rail section 40 of the base module 14. The guide rail section 40 of the first intermediate module 16 is positioned within the intermediate module 16 such that a lower end 52 of the guide rail section 40 of the first intermediate module 16 is spaced upwards from a lower edge 52 of the intermediate module 16. Thus, the guide rail section 40 of the first intermediate module 16 terminates above the lower edge 52 of the first intermediate module 16. An upper end 56 of the guide rail section 40 of the first intermediate module 16 is spaced downwards from an upper edge 58 of the first intermediate module 16. Thus, the guide rail section 40 of the first intermediate module 16 terminates below the upper edge 58 of the first intermediate module 16.At the upper end 54 of the guide rail section 40 of the first intermediate module 16, a connecting tab 50 is arranged analogously to the arrangement at the upper end 46 of the guide rail section 40 of the base module 14.

[0048] The two further intermediate modules 17 arranged above the first intermediate module 16 are identical in construction to the first intermediate module 16.

[0049] A guide rail section 40 is also arranged in the top module 18, the lower end 60 of which is spaced upwards from a lower edge 62 of the top module 18. The drive motor 28 is supported from above on the guide rail section 40 of the top module 18. An additional guide rail section 64 with a connecting tab 50 is also arranged laterally offset from the guide rail section 40 of the top module 18 in the top module 18.

[0050] In the Fig. 3 In the described example, the basic module 14 for the construction of a shaft pit is higher than the intermediate modules 16 and 17. However, it is also possible that the basic module is correspondingly Fig. 3 is replaced by a combination of a low base module and a first intermediate module.

[0051] Starting from the in Fig. 3 In the depicted state of the guide rail sections 40, for further installation the guide rail section 40 of the first intermediate module 16 is first moved vertically downwards until it rests on the guide rail section 40 of the base module 14, i.e., until the lower end 52 of the guide rail section 40 of the first intermediate module 16 and the upper end 46 of the guide rail section 40 of the base module 14 touch. Subsequently, the lower end 52 of the guide rail section 40 of the first intermediate module 16 and the upper end 46 of the guide rail section 40 of the base module 14 are connected by means of the connecting tab 50 arranged on the guide rail section 40 of the base module 16.

[0052] The described lowering and connecting process is repeated with the guide rail sections 40 of the further intermediate modules 17. Then, the additional guide rail section 64 is detached from the top module 18 and positioned above the guide rail section 40 of the uppermost intermediate module 17 and connected to it. The length of the additional guide rail section 64 is chosen such that the gap between the guide rail section 40 of the uppermost intermediate module 17 and the guide rail section 40 of the top module 18 is almost closed. After the additional guide rail section 64 has been positioned, the guide rail section 40 of the top module 18 is lowered until it rests on the additional guide rail section 64 from above. Finally, the guide rail section 40 of the top module 16 and the additional guide rail section 64 are connected with the connecting tab 50 previously positioned in the top module 16. The resulting state is described in Fig. 4 shown. In this state, the guide rail sections 40 of the shaft modules 14, 16, 17 and 18 together with the additional guide rail section 64 form a vertically extending guide rail 66 for the elevator car 22.

[0053] According to Fig. 5 A connecting tab 50 has a total of eight first through holes 68. The connecting tab could also have threaded holes instead of through holes. When a shaft module with a guide rail section 40 is provided, a connecting tab 50 is attached to the upper end of the guide rail section 40 in such a way that the connecting tab 50 does not project upwards beyond the guide rail section 40. The guide rail sections 40 each have four second through holes 70 at their ends. The first and second through holes 68, 70 are arranged such that the connecting tab 50 can be positioned on the guide rail section 40 in such a way that the first and second through holes 68, 70 are aligned and screws 72 can be inserted through the through holes 68, 70. Fig. 5 The connecting tab 50 is attached with two screws 72 at the Fig. 5 lower guide rail section 40 is attached.

[0054] Following the incident related to Fig. 3 und 4 Following the described lowering of the guide rail sections 40, the two screws 72 are loosened, thereby detaching the connecting bracket 50 from the lower guide rail section 40. The connecting bracket 50 is then slid upwards along the lower and upper guide rail sections 40 until the four upper through holes 68 of the connecting bracket 50 align with the four through holes 70 of the upper guide rail section 40, and the four lower through holes 68 of the connecting bracket 50 align with the four through holes 70 of the lower guide rail section 40. Subsequently, screws 72 are inserted through all through holes 68 and 70, and the connecting bracket 50 is screwed to the guide rail sections 40. This state is in Fig. 6 depicted.

[0055] Fig. 7 shows a comparison to Fig. 5 Another arrangement of a connecting tab 50 on a guide rail section 40 during the provision of a shaft module. The connecting tab 50 is connected to the lower guide rail section 40 by only one screw 72. This single screw 72 is selected and positioned so that it is already located in the same position as it will be after connection to the upper guide rail section 40. After lowering the upper guide rail section 40, this single screw 72 simply needs to be loosened, and the connecting tab 50 moved around this single screw 72 into the Fig. 6 The position shown can be pivoted. The connecting bracket 50 can then be screwed to the two guide rail pieces 40 as described above.

[0056] The in Fig. 8 The elevator shaft 12 shown differs from the elevator shaft from Fig. 8 mainly due to the arrangement of the guide rail sections 40 in the intermediate modules 16, 17, which is why only the differences between these two elevator shafts will be discussed. The guide rail sections 40 of the intermediate modules 16, 17 do not run as in Fig. 3 in the vertical direction, but are arranged at an angle relative to the vertical. One length of the guide rail sections 40 of the intermediate modules 16, 17 corresponds to one height of the intermediate modules 16, 17. The guide rail sections 40 of the intermediate modules 16, 17 are angled relative to the vertical to such an extent that their ends are spaced above and below the edges of the respective intermediate module.

[0057] Due to the aforementioned length of the guide rail sections 40 of the intermediate modules 16, 17, in contrast to Fig. 3 No additional guide rail section is necessary. The guide rail section 40 of the top module 18 can be moved downwards until it rests on the guide rail section 40 of the uppermost intermediate module 17. This condition is in Fig. 9 depicted.

[0058] 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 within the scope of protection of the attached claims. Reference numerals in the claims are not to be considered as limitations.

Claims

1. Method for installing an elevator system (10), having the following method steps: - providing a plurality of shaft modules (14, 16, 17, 18), wherein the shaft modules (14, 16, 17, 18) are prefabricated and are intended to be placed on top of one another and wherein each shaft module (14, 16, 17, 18) encloses a shaft space (15), and - placing said shaft modules (14, 16, 17, 18) on top of one another in such a way that the shaft spaces (15) of the shaft modules (14, 16, 17, 18) are aligned vertically and form a vertically extending elevator shaft (12) in which an elevator car (22) of the elevator system (10) can be arranged in a displaceable manner, wherein - said plurality of shaft modules (14, 16, 17, 18) comprises a base module (14) and a first intermediate module (16) intended to be placed on the base module (14), and - the shaft modules (14, 16, 17, 18) each have at least one guide rail piece (40) after provision, which guide rail pieces (40) together form a vertically extending guide rail (66) for the elevator car (22) in the elevator shaft (12) formed by the shaft modules (14, 16, 17, 18), - the guide rail piece (40) of the first intermediate module (16) is displaced vertically downwards after being placed on the base module (14) until it rests on the guide rail piece (40) of the base module (14), characterized in that an upper end (46) of the guide rail piece (40) of the base module (14) is arranged at a downward distance from an upper edge (48) of the base module (14) and prior to the said downward displacement of the guide rail piece (40) of the first intermediate module (16), - a lower end (52) of the guide rail piece (40) of the first intermediate module (16) is arranged at an upward distance from a lower edge (54) of the first intermediate module (16), and - an upper end (56) of the guide rail piece (40) of the first intermediate module (16) is arranged at a downward distance from an upper edge (58) of the first intermediate module (16).

2. Method according to claim 1, characterized in that, when providing the first intermediate module (16), the guide rail piece (40) of the first intermediate module (16) is arranged in the first intermediate module (16) such that it extends vertically.

3. Method according to claim 1, characterized in that, when providing the first intermediate module (16), the guide rail piece (40) of the first intermediate module (16) is arranged in the first intermediate module (16) such that it extends pivoted relative to the vertical.

4. Method according to claim 3, characterized in that the guide rail piece (40) of the first intermediate module (16) has a length which corresponds to a height of the first intermediate module (16).

5. Method according to any of claims 1 to 4, characterized in that, when providing the first intermediate module (16), a connecting tab (50) for connecting the guide rail piece (40) of the first intermediate module (16) to an adjacent guide rail piece (40) is fastened to one end (56) of the guide rail piece (40) of the first intermediate module (16) in such a way that it does not protrude beyond said end (56) of the guide rail piece (40) of the first intermediate module (16) in a main extension direction of the guide rail piece (40) of the first intermediate module (16).

6. Method according to claim 5, characterized in that the connecting tab (50) is fastened to the end (56) of the guide rail piece (40) of the first intermediate module (16) in such a way that, in order to connect the guide rail piece (40) of the first intermediate module (16) to an adjacent guide rail piece (40), it is first removed from said end (56) of the guide rail piece (40) of the first intermediate module (16) and then connected to the two guide rail pieces (40).

7. Method according to claim 5, characterized in that the connecting tab (50) is fastened to the end (56) of the guide rail piece (40) of the first intermediate module (16) in such a way that, in order to connect the guide rail piece (40) of the first intermediate module (16) to an adjacent guide rail piece (40), it is pivoted relative to said end (56) of the guide rail piece (40) of the first intermediate module (16) and is then connected to said adjacent guide rail piece (40).

8. Method according to any of claims 1 to 7, characterized in that a plurality of intermediate modules (16, 17) are provided and placed on top of one another.

9. Method according to claim 8, characterized in that all intermediate modules (16, 17) are identical.

10. Method according to any of claims 1 to 9, characterized in that an additional guide rail piece (64) is placed on top of the guide rail piece (40) of an uppermost intermediate module (17).

11. Method according to any of claims 1 to 10, characterized in that a top module (18) is provided as a further shaft module, which is placed on top of the uppermost intermediate module (17), whereby the elevator shaft (12) is closed off at the top, wherein the top module (18) after provision has a guide rail piece (40) which, after being placed on the uppermost intermediate module (17), is displaced vertically downwards to form the guide rail (66) for the elevator car.

12. Method according to claims 10 and 11, characterized in that, when providing the top module (18), the additional guide rail piece (64) is arranged in the top module (18).

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