Method for installing a lift system

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] Procedure for installing an elevator system

[0002] The invention relates to a method for installing an elevator system according to the preamble of claim 1.

[0003] Installing an elevator system is complex and therefore associated with considerable costs. In particular, the construction of an elevator shaft for the elevator system, for example, during the construction of a building, and the subsequent installation of components in the elevator shaft are quite complex. Typically, the elevator shaft is first constructed entirely within the building that houses the elevator system, and then the elevator system, including its components such as the elevator car, counterweight, drive motor, and guide rails, is installed in the elevator shaft. It has previously been proposed to construct the elevator shaft from several prefabricated shaft modules in which the necessary components, such as guide rail sections, are at least partially pre-assembled. Prefabrication and pre-assembly are not carried out on the construction site of the building that houses the elevator, but rather in a factory.This approach requires less time. It also has a positive impact on the quality of the installation and the safety of the installation personnel. After assembling the individual shaft modules to form an elevator shaft, the individual guide rail sections must be joined together to form continuous guide rails. The individual guide rail sections must touch each other, particularly at their end faces, to allow one guide rail section to be supported by the guide rail section directly below it.

[0004] 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 one another in such a way that the shaft spaces of the shaft modules are vertically aligned and form a vertically extending elevator shaft. An elevator car of the elevator system is arranged in the resulting elevator shaft in a vertically displaceable manner. After provision, the shaft modules each have a guide rail section, which together form a vertically extending guide rail for the elevator car in the elevator shaft formed by the shaft modules. The individual guide rail sections of the shaft modules protrude from the associated shaft module after the aforementioned provision of the 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 having the features of claim 1.

[0006] The method according to the invention for installing an elevator system comprises at least the following method steps:

[0007] - Providing a plurality of shaft modules, wherein the shaft modules are prefabricated and are intended to be placed on top of one another and wherein each shaft module encloses a shaft space and

[0008] - Placing said shaft modules on top of one another in such a way that the shaft spaces of the shaft modules are aligned vertically and form a vertically extending elevator shaft in which an elevator car of the elevator system can be arranged in a displaceable manner.

[0009] The aforementioned plurality of shaft modules comprises a base module and a first intermediate module designed to be placed on top of the base module, as well as optionally additional intermediate modules. The height of the intermediate modules corresponds in particular to a so-called 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 stated floor height.

[0010] After deployment, the shaft modules each have at least one guide rail section. In 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 displaced vertically downward 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 arranged at a downward distance from an upper edge of the base module.

[0011] The aforementioned distance between the upper end of the guide rail section of the basic module and the upper edge of the basic module advantageously allows other parts to be placed on the basic module after the basic module has been prepared and before the first intermediate module has been placed in place, i.e. before installation of the elevator system begins on the building housing the elevator system, without there being a risk of damaging the guide rail section of the basic module. This facilitates handling of the basic module and other components of the elevator system, such as intermediate modules. The shaft modules can therefore be easily stored temporarily, in particular stacked on top of one another, before installation of the elevator system begins. The aforementioned lowering of the guide rail section of the first intermediate module enables the individual guide rail sections to be joined together to form a guide rail in a simple and therefore time- and cost-effective manner.

[0012] In the following, directional information such as top, bottom, and sideways or vertical and horizontal refers to the alignment of the respective component, in particular a shaft module or a guide rail section, when assembled. This alignment therefore corresponds to the alignment of the respective component in the operating state of the elevator system. The operating state of the elevator system is understood to be the state after installation has been completed and the elevator system has been commissioned. In the operating state, people and / or goods can be transported in the elevator car between floors of the building that houses the elevator system.

[0013] The shaft modules and thus the guide rail sections can, for example, be transported in an orientation different from the one specified from a factory where they are manufactured to the construction site of the building housing the elevator system. To begin assembling the provided shafts, the base module is positioned as the lowest shaft module, particularly on a foundation of the building. Subsequently, the first intermediate module is placed on top of the base module as the lowest intermediate module to form the elevator shaft of the elevator system. Subsequently, further shaft modules, in the form of further intermediate modules or a top module closing off the elevator shaft at the top, can be placed on top of the uppermost intermediate module until the elevator shaft has reached the specified 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.

[0014] The shaft modules can be enclosed by shaft walls, which can be made of concrete or wood, for example. However, it is also possible for the shaft modules to be enclosed by a supporting structure, particularly made of metal.

[0015] The elevator system can, in particular, also have a counterweight connected to the elevator car by means of a support element, for example, a rope or a belt. During operation of the elevator system, the support element, and thus the elevator car and the counterweight, can be moved in the elevator shaft formed by the shaft modules by means of a drive machine of the elevator system. It is also possible for the elevator system to have no counterweight. In this case, the elevator car is designed, in particular, as a self-propelled elevator car, for example, equipped with a friction wheel drive. In this case, the elevator system can also be designed as a so-called drum elevator.

[0016] After the above-described provision, and thus even before the aforementioned stacking of the shaft modules, the shaft modules have at least one guide rail section. The guide rail section is thus arranged in the respective shaft module when the shaft modules are provided, in particular, it is fastened to a shaft wall of the shaft module. After the shaft modules have been stacked, the guide rail sections of the individual shaft modules are connected to one another in such a way that, together, they form a continuous, vertically extending guide rail for the elevator car in the elevator shaft formed by the shaft modules. A guide rail section has an elongated shape and typically a T-shaped profile.

[0017] The guide rail section is fixed in particular with at least one, in particular at least two so-called rail brackets or brackets to a shaft wall or a support delimiting the shaft module. The rail brackets are in particular designed in several parts, with a first rail bracket part being fixed to the shaft wall or the support, for example screwed, and a second rail bracket part being connected to the guide rail section by means of so-called rail clamps or rail clips. The guide rail section is in particular clamped between rail clamps and the second rail bracket part. The first and second rail bracket parts are screwed together, whereby the alignment of the two rail bracket parts to one another can be changed to align the guide rail section. Different rail brackets can be used.For example, so-called Z-brackets, L-brackets, or Omega brackets can be used. An Omega bracket is designed so that a travel path for a counterweight of the elevator system runs between the inner side of the Omega bracket and the side wall to which the Omega bracket is attached.

[0018] The elevator car and, if present, the counterweight of the elevator system are each guided by two opposing guide rails during movement in the elevator shaft. This means that two or four guide rail sections are arranged in each shaft module when the shaft modules are prepared. In addition to the guide rail sections, other components of the elevator system can also be arranged in the shaft modules when the shaft modules are prepared.

[0019] When the elevator system is in operation, the guide rail section of the base module is supported in particular on a floor of the elevator shaft and thus in particular on a foundation of the building that houses the elevator system. The said guide rail section can thus be supported directly or via another component of the elevator system and thus indirectly on the floor of the elevator shaft. In particular, the guide rail section of the base module is already arranged in its final position, i.e. the position in the operating state of the elevator system, in the base module when the base module is prepared. However, it is also possible that the guide rail section is moved vertically downwards after being placed on the foundation of the building until it is supported on the shaft floor. The upper end of the guide rail section of the base module is arranged at a downward distance from an upper edge of the base module.The guide rail section of the base module therefore does not protrude upwards from the base module. In particular, the guide rail section of the base module does not protrude downwards from the base module either. The specified distance can be, for example, 0.5 to 5 cm, in particular 1 cm.

[0020] The elevator shaft of the elevator system can be designed so that a single elevator car can be moved vertically within the elevator shaft. However, it is also possible for the elevator shaft to be designed so that more than one, for example two or three elevator cars, can be moved vertically next to each other and independently of each other. The elevator shaft can therefore be designed as a so-called single shaft or as a multi-shaft. In the multi-shaft design, the shaft modules are designed in particular so that they are only placed on top of each other to form the elevator shaft, i.e. shaft modules are not arranged next to each other. However, it is also conceivable for shaft modules to be arranged both next to each other and on top of each other to form the elevator shaft.

[0021] In addition to the above-mentioned method steps of providing and stacking shaft modules, the method comprises in particular the further method steps of providing an elevator car and optionally a counterweight and arranging the elevator car and optionally the counterweight in the elevator shaft such that the elevator car and optionally the counterweight can be displaced vertically in the elevator shaft.

[0022] According to the invention, before the aforementioned downward displacement of the guide rail section of the first intermediate module and thus after the provision of the first intermediate module, a lower end of the guide rail section of the first intermediate module is arranged at an upward distance from a lower edge of the first intermediate module and an upper end of the guide rail section of the first intermediate module is arranged at a downward distance from an upper edge of the first intermediate module. The guide rail section of the first intermediate module therefore protrudes neither upwards nor downwards from the first intermediate module. The aforementioned distances can be, for example, 0.5 to 5 cm, in particular 1 cm. The distance to the upper edge and the distance to the lower edge can be the same or different. The risk of the guide rail section of the first intermediate module being damaged before or during placement on the base module is therefore very low.It also simplifies handling of the first intermediate module. This allows the shaft modules to be easily stored, especially stacked, before the elevator installation begins.

[0023] In one embodiment of the invention, when the first intermediate module is provided, the guide rail section of the first intermediate module is arranged in the first intermediate module such that it runs vertically. To ensure that the ends of the guide rail section are each spaced from the edge of the first intermediate module despite the vertical alignment, the length of the guide rail section is less than the height of the first intermediate module. The vertical alignment of the guide rail section advantageously allows the guide rail section to only need to be displaced vertically downwards to form a continuous guide rail until it rests on the guide rail section of the base module. This enables particularly simple and therefore cost-effective installation of the elevator system.

[0024] As an alternative to the aforementioned vertical orientation 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 in the first intermediate module such that it pivots relative to the vertical and thus runs at an angle relative to the vertical. The guide rail section of the first intermediate module then has, in particular, a length corresponding to a height of the first intermediate module.

[0025] To form a continuous guide rail, such a guide rail section is in particular first pivoted so that it runs vertically and then displaced vertically downwards until it rests on the guide rail section of the base module. The aforementioned 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 be spaced 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 more than one intermediate module is stacked on top of one another to form a continuous guide rail, the guide rail sections do not have to be displaced further vertically downwards as the number of intermediate modules increases.

[0026] In one embodiment of the invention, when providing the first intermediate module, a connecting bracket for connecting the guide rail section of the first intermediate module to an adjacent guide rail section is fastened to one end of the guide rail section of the first intermediate module in such a way that the connecting bracket does not protrude beyond the said end of the guide rail section of the first intermediate module in a main extension direction of the guide rail section of the first intermediate module. The main extension direction of the guide rail section is understood to mean the length of the elongated guide rail section, i.e., its vertical extension in the operating state of the elevator system. The connecting bracket has, in particular, an elongated, cuboid-shaped basic shape with a plurality of through or threaded holes.In order to ensure that the connecting tab does not protrude beyond the said end of the guide rail piece, it is attached to the said end of the guide rail piece in such a way that it does not extend outwards from the said end relative to the guide rail piece, but inwards.

[0027] To form and secure a continuous guide rail, the guide rail sections of adjacent shaft modules are firmly connected using a connecting plate. The connecting plate is screwed to the two adjacent guide rail sections. To achieve this, the connecting plate must extend beyond the ends of both guide rail sections. The screws used to create the connection between the guide rail section and the connecting plate run through the aforementioned through-holes or threaded holes in the connecting plate, which are aligned with corresponding through-holes or threaded holes in the guide rail sections. Such connecting plates are available in various designs on the market.

[0028] Attaching a connecting plate to one end of the guide rail section advantageously provides the connecting plate for connecting the guide rail sections at the location where the connecting plate is needed after the shaft modules have been stacked. This eliminates the need to provide the connecting plate separately, which would entail additional effort and therefore costs.

[0029] The connecting plate is, in particular, attached to the end of the guide rail section in such a way that, in order to connect the guide rail section to an adjacent guide rail section, it is first removed from the said end of the guide rail section and then connected to the two guide rail sections. With the described cuboid-shaped basic shape of the connecting plate with through or threaded holes, this means that the connecting plate is attached "upside down," in particular screwed, using the through or threaded holes at the end of the guide rail section of the first intermediate module, which are intended for connection to an adjacent guide rail section during the operating state of the elevator system.

[0030] Alternatively, the connecting plate 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 said end of the guide rail section and then connected to the said adjacent guide rail section. With the described cuboid-shaped basic shape of the connecting plate with through or threaded holes, this means that the connecting plate 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 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 plate, in particular the screw connection to the guide rail section of the first intermediate module, is loosened. Then, the connecting plate is pivoted around the loosened connection into the position required for connection to the adjacent guide rail section. Finally, the connecting plate is connected, in particular screwed, to the two adjacent guide rail sections using all through or threaded holes. When preparing the first intermediate module, the connecting plate can also be fastened to the guide rail section of the first intermediate module with an additional connection, which is loosened before the connecting plate is pivoted as described.

[0031] In an embodiment of the invention, a plurality of intermediate modules are provided and placed on top of one another, wherein the intermediate modules are in particular identical in design. The first intermediate module is placed on the base module as described above. A second intermediate module is placed on the first intermediate module. This is repeated up to a topmost intermediate module. After being placed on the underlying shaft module, the guide rail sections of the individual intermediate modules are each displaced vertically downwards until they are supported on the guide rail section of the underlying shaft module. The aforementioned lowering occurs in particular first with the guide rail section of the first intermediate module, then with the guide rail section of the second intermediate module up to the guide rail section of the topmost intermediate module.

[0032] 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 multiple intermediate modules with guide rail sections that are shorter than the height of the intermediate modules. With each such intermediate module that is placed on top, the corresponding guide rail section must be displaced further downward until it can rest on the guide rail section below it. The additional guide rail section serves to compensate for this displacement, thus providing a sufficiently long guide rail section, in this case a two-part guide rail section, in the uppermost intermediate element as well.The additional guide rail piece is placed on top of the guide rail piece of the top intermediate module, particularly after the vertical displacement of the guide rail piece of the top intermediate module downwards.

[0033] If, for example, 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, the guide rail section of the uppermost intermediate module must be moved downwards by 40 cm. The additional guide rail section then advantageously has a length of 40 cm. In one embodiment of the invention, a top module is provided as an additional shaft module, which is placed on top of the uppermost intermediate module. This closes off the elevator shaft at the top. Once 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, in particular, displaced vertically downward 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. When the top module is provided, 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 that closes off the elevator shaft at the top does not have a guide rail section, so that the top module forms a kind of machine room.

[0036] If an additional guide rail section is provided, it is positioned in the top module, especially when the top module is prepared. This advantageously eliminates the need to transport and prepare the additional guide rail section separately, but rather transports and prepares it in the top module. Placing the additional guide rail section in the top module also has the advantage that the top module is placed on top of the uppermost intermediate module, thus providing the additional guide rail section where it is needed.

[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 merely schematic and not to scale. They show:

[0038] Fig. 1 shows an elevator system with an elevator car in an elevator shaft composed of three shaft modules,

[0039] Fig. 2 a snapshot of a top module being placed on a not yet completed elevator shaft of an elevator system,

[0040] Fig. 3 shows an elevator shaft composed of five shaft modules before lowering guide rail sections,

[0041] Fig. 4 the elevator shaft from Fig. 3 after lowering the guide rail sections,

[0042] 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,

[0043] Fig. 6 the ends of Fig. 5 after lowering the upper guide rail section and connecting the adjacent guide rail sections with the connecting plate,

[0044] Fig. 7 Ends of adjacent guide rail sections with an alternative arrangement of the connecting strap compared to Fig. 5,

[0045] Fig. 8 shows an elevator shaft composed of five shaft modules before lowering guide rail sections with an alternative arrangement of the guide rail sections in the shaft modules compared to Fig. 3 and

[0046] Fig. 9 the elevator shaft from Fig. 8 after lowering the guide rail sections,

[0047] 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, in the form of 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 comprise additional intermediate modules 16. The aforementioned shaft modules 14, 16, 18 are prefabricated in a factory and equipped with elevator components. They are then brought to the construction site and stacked on top of one another. The described prefabrication, equipping with elevator components, and transporting of the shaft modules 14, 16, 18 can be referred to as providing the shaft modules 14, 16, 18. Each shaft module 14, 16, and 18 encloses a shaft space 15.The shaft modules 14, 16, 18 are placed on top of one another in such a way that the shaft spaces 15 of the shaft modules 15, 16, 18 are aligned vertically and form the vertically extending elevator shaft 12 in which an elevator car 22 of the elevator system 10 is arranged in a displaceable manner.

[0048] Fig. 2 shows how the top module 18 is placed onto the first intermediate module 16 from above by means of a crane 20. The first intermediate module 16 was previously placed onto the base module 14 in the same way. The base module 14 stands on a foundation of the elevator shaft 12 (not shown in detail). The base module 14 and the first intermediate module 16 form an upwardly open, not yet finished elevator shaft, which is closed off at the top by the placement of the top module 18.

[0049] The elevator system 10 of Fig. 1 also has the elevator car 22, which can be moved vertically in the elevator shaft 12 along guide rails not shown in Fig. 1 (see 66 in Fig. 4). 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 by a drive machine 28 arranged 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 region of the drive machine 28. The drive machine 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 hanging cable 34 to an elevator control 36 arranged in the top module 18. The hanging cable 34 provides power supply and communication with the elevator car 22.

[0050] The individual shaft modules can be defined by shaft walls, which can be made of concrete or wood, for example. However, it is also possible for the shaft modules to be defined by a support structure, in particular made of metal. The elevator shaft can also have more than one intermediate module, wherein the individual intermediate modules are in particular identically constructed. The elevator shaft 12 according to Fig. 3 is composed 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. When the shaft modules 14, 16, 17, 18 were prepared, a guide rail section 40 was arranged in each shaft module 14, 16, 17, 18. The guide rail sections 40 were in particular screwed to a wall of the respective shaft module by means of rail brackets (not shown). The procedure is described below for only one guide rail section per shaft module.Two guide rail sections are arranged in each shaft module for guiding the elevator car 22 and two guide rail sections for guiding the counterweight 30. The procedure for all guide rail sections is analogous to the procedure described below for one guide rail section.

[0051] 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 rest on the floor of the elevator shaft 12. It is also possible for at least one sheet and / or at least one block to be connected to the lower end of the guide rail section of the base module, which are flush with the lower edge of the base module.

[0052] An upper end 46 of the guide rail section 40 of the base module 14 is arranged at a downward distance from an upper edge 48 of the base module 14. The guide rail section 40 of the base module 14 therefore 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, which will be discussed in connection with Figs. 5 to 7. The connecting tab 50 is fastened to the guide rail section 40 of the base module 14 in such a way that it does not protrude 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 this case in the vertical direction.

[0053] The guide rail section 40 of the first

[0054] The intermediate module 16 is arranged above the guide rail section 40 of the base module 14. The guide rail section 40 of the first intermediate module 16 has been arranged in the intermediate module 16 such that a lower end 52 of the guide rail section 40 of the first intermediate module 16 is arranged at a distance upwards from a lower edge 52 of the intermediate module 16. The guide rail section 40 of the first intermediate module 16 thus ends 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 arranged at a distance downwards from an upper edge 58 of the first intermediate module 16. The guide rail piece 40 of the first intermediate module 16 thus ends below the upper edge 58 of the first intermediate module 16. At the upper end 54 of the guide rail piece 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 piece 40 of the basic module 14.

[0055] The two further intermediate modules 17 arranged above the first intermediate module 16 are constructed identically to the first intermediate module 16.

[0056] Also arranged in the top module 18 is a guide rail section 40, the lower end 60 of which is spaced upward 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. Also arranged in the top module 18 is an additional guide rail section 64 with a connecting bracket 50, laterally offset from the guide rail section 40 of the top module 18.

[0057] In the example described in Fig. 3, the basic module 14 is higher than the intermediate modules 16, 17 to form a shaft pit. However, it is also possible that the basic module according to Fig. 3 is replaced by a combination of a low basic module and a first intermediate module.

[0058] Starting from the state of the guide rail pieces 40 shown in Fig. 3, for further installation, the guide rail piece 40 of the first intermediate module 16 is first displaced vertically downwards until it rests on the guide rail piece 40 of the base module 14, i.e., until the lower end 52 of the guide rail piece 40 of the first intermediate module 16 and the upper end 46 of the guide rail piece 40 of the base module 14 touch. Subsequently, the lower end 52 of the guide rail piece 40 of the first intermediate module 16 and the upper end 46 of the guide rail piece 40 of the base module 14 are connected by means of the connecting tab 50 arranged on the guide rail piece 40 of the base module 16.

[0059] The described lowering and connecting process is repeated with the guide rail sections 40 of the other 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, where it is connected. The length of the additional guide rail section 64 is selected 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 positioning the additional guide rail section 64, 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 to the connecting bracket 50 previously positioned in the top module 16. The resulting state is shown in Fig. 4.In this state, the guide rail pieces 40 of the shaft modules 14, 16, 17 and 18 together with the additional guide rail piece 64 form a vertically extending guide rail 66 for the elevator car 22.

[0060] According to Fig. 5, a connecting plate 50 has a total of eight first through holes 68. The connecting plate could also have threaded holes instead of through holes. When providing a shaft module with a guide rail piece 40, a connecting plate 50 is fastened to the upper end of a guide rail piece 40 in such a way that the connecting plate 50 does not protrude upwards beyond the guide rail piece 40. The guide rail pieces 40 each have four second through holes 70 at their ends. The first and second through holes 68, 70 are arranged in such a way that the connecting plate 50 can be arranged on the guide rail piece 40 in such a way that the first and second through holes 68, 70 are aligned and screws 72 can be pushed through the through holes 68, 70. In Fig. 5, the connecting plate 50 is fastened with two screws 72 to the lower guide rail piece 40 in Fig. 5. According to the method described in connection with Fig.3 and 4, the two screws 72 are loosened, thus releasing the connecting bracket 50 from the lower guide rail piece 40. The connecting bracket 50 is then pushed upward along the lower and upper guide rail pieces 40 until the four upper through holes 68 of the connecting bracket 50 are aligned with the four through holes 70 of the upper guide rail piece 40 and the four lower through holes 68 of the connecting bracket 50 are aligned with the four through holes 70 of the lower guide rail piece 40. Subsequently, screws 72 are pushed through all through holes 68 and 70, and the connecting bracket 50 is screwed to the guide rail pieces 40. This state is shown in Fig. 6.

[0061] Fig. 7 shows a different arrangement of a connecting bracket 50 on a guide rail section 40 when preparing a shaft module compared to Fig. 5. The connecting bracket 50 is connected to the lower guide rail section 40 with only one screw 72. The one screw 72 is selected and arranged such that it is already located at the same position as it will be after being connected to the upper guide rail section 40. After the upper guide rail section 40 has been lowered, this one screw 72 only needs to be loosened and the connecting bracket 50 pivoted about this one screw 72 into the position shown in Fig. 6. The connecting bracket 50 can then be screwed to the two guide rail sections 40 as described above.

[0062] The elevator shaft 12 shown in Fig. 8 differs from the elevator shaft in Fig. 8 primarily in the arrangement of the guide rail pieces 40 in the intermediate modules 16, 17, which is why only the differences between these two elevator shafts will be discussed. The guide rail pieces 40 of the intermediate modules 16, 17 do not run in a vertical direction as in Fig. 3, but are arranged pivoted relative to the vertical. One length of the guide rail pieces 40 of the intermediate modules 16, 17 corresponds to one height of the intermediate modules 16, 17. The guide rail pieces 40 of the intermediate modules 16, 17 are pivoted so far relative to the vertical that their ends are arranged at a distance from the edges of the respective intermediate module at the top and bottom. Due to the aforementioned length of the guide rail pieces 40 of the intermediate modules 16, 17, no additional guide rail piece is necessary, in contrast to Fig. 3.The guide rail section 40 of the top module 18 can be moved downward until it rests on the guide rail section 40 of the uppermost intermediate module 17. This state is shown in Fig. 9.

[0063] Finally, it should be noted that terms such as "having," "comprising," 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 of other embodiments described above, within the scope of the appended claims. Reference signs in the claims are not to be considered as limitations.

Claims

Patent claims 1. Method for installing a lift system (10) with the following Process 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 vertically aligned and form a vertically extending elevator shaft (12) in which an elevator car (22) of the elevator system (10) can be displaceably arranged, 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 distance downwards from an upper edge (48) of the base module (14) and before the said displacement of the guide rail piece (40) of the first intermediate module (16) downwards - a lower end (52) of the guide rail piece (40) of the first intermediate module (16) from a lower edge (54) of the first intermediate module (16) is arranged at a distance upwards 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 runs 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) in such a way that it runs 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 one 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 is 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 one of claims 1 to 7, characterized in that several intermediate modules (16, 17) are provided and placed one on top of the other.

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

10. Method according to one 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. The method according to one 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), thus closing off the elevator shaft (12) at the top, wherein the top module (18) has, after provision, 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. The method according to claims 10 and 11, characterized in that when the top module (18) is provided, the additional guide rail piece (64) is arranged in the top module (18).

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