Universal bracket and pit assembly for a rail system of an elevator equipment, rail system, and method for aligning a rail system

Abstract

The present invention relates to a universal bracket (102) for a rail system (100) of an elevator installation, wherein the universal bracket (102) has a main support (112) that can be positioned and aligned and at least one assembly point (116) for at least one rail (106) of the rail system (100), wherein the main support (112) has two guides (120) that are inseparably connected to the main support (112) and are used to guide a plumb line (118) respectively, and the assembly point (116) and the guide (120) are arranged in a fixed relative position to each other.

Description

Technical Field

[0001] The invention relates to a universal support for a rail system of an elevator installation, a pit assembly for a rail system of an elevator installation, a rail system for an elevator installation and a method for aligning a rail system of an elevator installation in an elevator shaft for an elevator installation. Background Art

[0002] In an elevator installation, at least one car is guided by a rail system during its vertical movement along the elevator shaft. The rail system comprises a bracket that is fixed to a wall of the elevator shaft for the elevator installation. The bracket is sometimes also called a carriage. The vertically arranged rails of the rail system are fixed to the bracket.

[0003] The brackets are fixed to the wall during the construction phase of the elevator installation, and the rails are then aligned using an alignment device on the brackets. The alignment device can be, for example, a plumb bob that is suspended from the top of the elevator shaft down into the pit of the elevator shaft. The rails can be aligned using a template or a gauge that is held between the corresponding rail and the plumb line. The relative position of the rails and the corresponding brackets is readjusted until the template or gauge fits exactly between the plumb line and the rails.

[0004] WO2016 / 066786A1 introduces a conventional guide rail installation method. WO2009156557A1 shows a device for aligning a plumb line by an actuator provided on the device. In addition, JPH10218530A, JP2001163549A, JPH05186161A and JPH05139656A show devices temporarily installed in a shaft to maintain or align a plumb line. Summary of the invention

[0005] There would primarily be a need for an improved universal bracket for a track system for elevator equipment, an improved pit assembly for a track system for elevator equipment, an improved track system for elevator equipment, and an improved method of aligning a track system for elevator equipment in an elevator shaft for elevator equipment.

[0006] This need can be met by a universal support for a rail system for an elevator installation, a pit assembly for a rail system for an elevator installation, a rail system for an elevator installation and a method for aligning a rail system for an elevator installation in an elevator shaft for an elevator installation according to the independent claims. Advantageous embodiments are defined in the dependent claims and in the following description.

[0007] According to a first aspect of the invention, a universal bracket for a rail system of an elevator device is proposed, the universal bracket having a main support member that can be positioned and aligned and at least one assembly point for at least one rail of the rail system, the main support member having two guide members that are inseparably connected to the main support member, the guide members being used to guide a plumb line respectively, wherein the assembly point and the guide members are arranged in a fixed relative position to each other.

[0008] According to a second aspect of the invention, a pit assembly for a rail system of an elevator device is proposed, the pit assembly having a bottom support and a fixed support oriented transversely to the bottom support, the bottom support having at least one assembly point for at least one rail of the rail system, and the fixed support having two fixing points inseparably connected to the fixed support, the fixing points being used to fix a plumb line respectively, wherein the assembly point and the fixing point are arranged in a fixed relative position to each other.

[0009] According to a third aspect of the present invention, a rail system for an elevator device is proposed, the rail system having at least one universal bracket according to the method proposed herein as a reference bracket, a pit assembly according to the method proposed herein, at least one universal bracket according to the method proposed herein as an intermediate bracket and at least one rail, wherein the fixing point of the pit assembly is arranged below the guide member of the reference bracket and the guide member of the intermediate bracket is aligned between the guide member of the reference bracket and the fixing point of the pit assembly, and the rail is assembled on the assembly points of the pit assembly, the intermediate bracket and the reference bracket.

[0010] According to a fourth aspect of the invention, a method for aligning a rail system of an elevator installation in an elevator shaft for an elevator installation is proposed, wherein a universal bracket according to the method proposed here is arranged as a reference bracket in the region of the upper end of the elevator shaft and is positioned and aligned on the wall of the elevator shaft, a first plumb line is guided through a first guide of the reference bracket and lowered to the lower end of the elevator shaft, and a second plumb line is guided through a second guide of the reference bracket and lowered to the lower end of the elevator shaft, wherein the pit assembly according to the method proposed here is arranged at the lower end of the elevator shaft. The first fixing point of the pit assembly is positioned relative to a first plumb line and the second fixing point of the pit assembly is positioned relative to a second plumb line, the first plumb line is fixed to the first fixing point and the second plumb line is fixed to the second fixing point, wherein at least one universal bracket according to the method proposed here is positioned and aligned in the elevator shaft as an intermediate bracket between the reference bracket and the pit assembly until the first guide element of the intermediate bracket is aligned with the first plumb line and the second guide element of the intermediate bracket is aligned with the second plumb line, and at least one rail of the rail system is mounted on the mounting points of the pit assembly, the intermediate bracket and the reference bracket.

[0011] The possible features and advantages of the embodiments of the present invention may be considered to be based on the concepts and knowledge introduced below, in particular, without limiting the present invention.

[0012] A universal support for a rail system of an elevator installation can be provided for mounting a plumb line in an appropriately positioned manner in the elevator shaft. During the installation of the rail system, the other components of the rail system can subsequently be aligned with the plumb line. A plumb line can be understood in particular as a plumb line with a suspended plumb weight. The plumb weight ensures the plumb alignment of the plumb line. The plumb line can be tensioned between two essentially arbitrary points and takes up the shortest connecting line between the two points. It is thus also possible to tension the plumb line in space at a structurally predetermined angle. For example, the plumb line can compensate for lateral offsets of up to ten centimeters between the pit component and the reference support.

[0013] The universal bracket can be a structural component of a rail system of an elevator installation. The universal bracket can provide a load-bearing mechanical connection between the rails of the rail system and a particularly load-bearing wall of an elevator shaft of a building. Preferably, the front wall of the shaft containing the floor door forms the wall. The universal bracket can be dimensioned according to the load. In particular, the universal bracket can introduce lateral forces generated during the operation of the elevator installation into the building. The universal bracket can consist of several individual parts. For example, the individual parts can be bent parts made of pre-cut metal sheets. The individual parts can be screwed together. The individual parts can also be pinned or welded to each other. The middle part of the universal bracket can be called the main support. The main support can have a fixing point for connecting to a wall or a fastening device anchored in the wall. The fixing point can be designed to laterally position the universal bracket relative to the fixing mechanism and to align the angle of the universal bracket in space. The assembly point can determine the position and attitude of at least one track.

[0014] The pit assembly can be the lowest structural member of the rail system. The lower end of the elevator shaft can be called the pit. The pit assembly can provide a load-bearing mechanical connection between the rail and the pit. The pit assembly is preferably fixed to a particularly load-bearing bottom of the elevator shaft or the pit. The pit assembly can be additionally or alternatively fixed to a particularly load-bearing wall of the elevator shaft or the pit. The pit assembly can be dimensioned according to the load. In particular, the pit assembly can introduce vertical forces occurring during the operation of the elevator device into the building or the pit. The pit assembly can consist of several individual parts. For example, the individual parts can be bent parts made of pre-cut metal sheets. The individual parts can be screwed together. The individual parts can also be pinned or welded to each other. The middle part of the pit assembly can be called the bottom support. The part connected to the bottom support can be called the fixed support. The fixed support can have a fixing point for a plumb line on the side facing away from the bottom support. The bottom support can have a fixing point for connecting to the bottom or a fixing mechanism anchored in the bottom.

[0015] The main support can have two guides, which are arranged in structurally predetermined positions relative to the assembly point and relative to the fixing point of the building. The main support can have a guide on the side facing away from the assembly point. The relative position can be the same in all universal brackets of the track system. Therefore, the universal bracket can be used for a variety of applications, in particular as a reference bracket and intermediate bracket. The universal bracket based on the method described here can be used as a substitute for a pit assembly. By aligning the reference bracket in the elevator shaft, the reference bracket can clearly predetermine the position and attitude of other components of the track system. The alignment of the intermediate brackets is adapted to the alignment of the reference bracket.

[0016] The main support can have an upper segment and a lower segment oriented substantially parallel to the upper segment and at least one web arranged between the upper segment and the lower segment. The guide can be designed as a first notch on the upper segment and a second notch on the lower segment, respectively. When the universal support is aligned as desired, the first notch and the second notch can be arranged one above the other in particular vertically. The notch can be a V-shaped cutout in particular. The notch can be arranged on the edge of the main support. The main support can have a C-shaped cross section.

[0017] A plumb line can be arranged or fixed in each guide. The plumb line can be temporary, i.e. can be reversibly detachably connected. One end of the plumb line can be arranged on the guide. The other end of the plumb line can be loaded with a weight. For example, the plumb line can consist of several fibers or be designed as a wire.

[0018] The guides can be arranged on the wall side or on the side of the main support facing away from the assembly point. The universal bracket can be assembled with the guides on the wall side without touching the plumb line. Thus, the universal bracket can be easily introduced into the shaft, roughly aligned and then pushed onto the bolts to match the plumb line. Alternatively, the universal bracket can be introduced between the wall and the plumb line.

[0019] The universal support can have at least one rail support oriented transversely to the main support. The mounting point can be arranged at an end region of the rail support facing away from the main support. The opposite end region of the rail support can be connected to the main support. In particular, the universal support can have two rail supports, each having at least one mounting point, which are connected to the main support at opposite end regions of the main support. The rail supports can be spaced far enough apart from each other that a car of the elevator system can pass between the rail supports.

[0020] The reference support can be arranged below the uppermost shaft door threshold of the elevator shaft. The intermediate support can be arranged below the shaft door threshold of the elevator shaft, which is located below the uppermost shaft door threshold. The universal support can have a receptacle on the upper side for a door guide of a shaft door of the elevator installation. The door guide can be positioned and aligned in the same working step as the universal support itself. Due to the arrangement below the shaft door threshold, lateral forces can be directly dissipated into the building when loading and unloading the elevator car.

[0021] The reference bracket can be aligned in the guide using a plumb line to align the upper assembly point. The position of the reference bracket in the elevator shaft can be adjusted by bringing the plumb lines in the two guides to the desired position in the respective guides. Additional auxiliary devices for alignment can thus be omitted.

[0022] After the pit assembly has been positioned and aligned, the plumb line can be fixed to the fixing point of the pit assembly. The plumb line can be set in tension. The plumb line can be tensioned. The connection at both ends prevents the plumb line from swinging. The intermediate bracket can thus be aligned without delays caused by a swinging plumb line.

[0023] The main support can have two positioning and alignment devices, which can be designed as cutouts of the main support in the area of ​​the guide. The distance of the main support from the wall can be adjusted by means of bolts which can be arranged in the cutouts and anchored in the wall. The angular position of the main support relative to the wall can be adjusted by means of spherical caps which can be clamped on the edges of the cutouts. Thus, the universal support can be positioned in all spatial directions and aligned at all spatial angles. The cutout can in particular be arranged on a web between the upper segment and the lower segment which is oriented substantially parallel to the wall.

[0024] The upper end of the plumb line can be hooked into the guide. For example, the upper end can have a thickening similar to a brake cable of a bicycle, which has larger dimensions than the guide. The guide can therefore have a semi-closed shape to prevent the thickening from slipping out of the guide. For example, the guide can be designed as a slotted circle. Here, the width of the slot corresponds approximately to the diameter of the plumb line, while the diameter of the circle is smaller than the diameter of the thickening. The intermediate bracket can be positioned and aligned so that the plumb line extends through the center point of the circle of its guide, respectively.

[0025] Alternatively, the upper end of the plumb line can be fixed to a fixing means of the elevator shaft. For example, the plumb line can be fixed to an eyelet or a bolt respectively fixed in the wall of the elevator shaft. The plumb line can also be fixed in the area of ​​the floor above the reference support.

[0026] The upper end of the plumb line can be fixed on the reference support itself. For example, the plumb line can be wrapped around the reference support and tied to itself or the reference support.

[0027] It should be noted that some possible features and advantages of the present invention are described herein with reference to different embodiments. Those skilled in the art will recognize that the features of the universal support, pit assembly, rail system and method can be appropriately combined, adjusted or interchanged to produce further embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The embodiments of the present invention are described below in conjunction with the accompanying drawings. Neither the drawings nor the description should be construed as limiting the present invention.

[0029] Figure 1 A diagram showing a rail system under construction for an elevator installation with a universal bracket according to an embodiment;

[0030] Figure 2 A diagram showing a universal bracket used as a reference bracket according to an embodiment;

[0031] Figure 3 A diagram showing a pit assembly according to an embodiment; and

[0032] Figure 4 A diagram showing an alignment of a universal bracket used as an intermediate bracket according to an embodiment.

[0033] The drawings are only schematic and not true to scale. The same reference numerals in the various figures denote identical or identically functioning features. DETAILED DESCRIPTION

[0034] Figure 1A diagram of a rail system 100 under construction with a universal support 102 and a pit assembly 104 according to an embodiment is shown. The rail system 100 is built in an elevator shaft. The elevator shaft is only shown here and extends across three floors of a building. The movable parts of the elevator installation are then guided by the rail system 100 in a manner that allows them to move in the vertical direction. The rails 106 of the rail system 100 are mounted on the universal support 102 and the pit assembly 104. The universal support 102 and the pit assembly 104 predetermine the subsequent position of the rails 106 in the elevator shaft.

[0035] The rail system 100 is constructed from above. The uppermost part of the universal support 102 is fastened as a reference support 108 to a wall 110 of the elevator shaft, and the main support 112 of the reference support 108 is oriented substantially parallel to the wall 110, so that the rail support 114 of the reference support 108 projects horizontally into the elevator shaft away from the wall 110. The mounting points 116 for mounting the rails of the rail system are arranged in the end region of the rail support 114.

[0036] In one embodiment, the reference support 108 is positioned on the wall 110 below the shaft door threshold of the uppermost floor connected by the elevator shaft and is oriented horizontally. The door guide of the reference support 108 is adjusted to the height of the shaft door threshold. The angular position of the door guide is already predetermined by the alignment of the reference support 108.

[0037] Two plumb lines 118 or alignment lines are then fixed to the reference support 108 and are each guided through a guide 120 of the reference support 108. A plumb bob 122 is fixed at the end of the plumb line 118. Due to the weight of the plumb bob 122, the plumb bob 122 and therefore also the plumb line 118 hangs vertically downward from the guide 120 of the reference support 108 into the elevator shaft.

[0038] The plumb line 118 is adjusted until the plumb bob 122 hangs just above the bottom 124 of the elevator shaft. The pit assembly 104 is positioned on the bottom 124 using the plumb bob 122. In the process, the pit assembly 104 is moved on the bottom 124 until the fixing point 126 of the pit assembly 104 is aligned with the plumb bob 122 or the plumb line 118, respectively. After the alignment, the assembly point 116 of the pit assembly 104 is positioned according to the structure. In this position, the pit assembly 104 is fixed. In order to prevent the plumb bob 122 from swinging, the plumb line 118 can be fixed to the fixing point 126 of the pit assembly 104.

[0039] If the fixing point 126 of the pit assembly 104 cannot be aligned with the plumb bob 122, the distance of the reference bracket 108 from the wall 110 is adjusted. In this way, tolerances of the elevator shaft can be compensated.

[0040] In an alternative embodiment, an additional universal bracket is arranged in the elevator shaft as a pit bracket instead of the pit assembly 104. In contrast to the pit assembly 104 designed specifically for this purpose, the pit bracket is not fixed to the bottom 124 but to the wall 110 and is aligned horizontally with the fixing means in the wall 110 by means of an alignment device until the guide of the pit bracket is aligned with the plumb bob 122 or the plumb line 118. After alignment, the mounting point of the pit bracket is arranged vertically below the mounting point 116 of the reference bracket 108.

[0041] Between the reference bracket 108 and the pit assembly 104, another universal bracket 102 is fixed to the wall 110 as an intermediate bracket 128. The intermediate bracket 128 is located below the shaft door threshold at the intermediate floor. The angular position of the intermediate bracket 128 is adjusted until the intermediate bracket 128 is oriented horizontally and the guide 120 of the intermediate bracket 128 is aligned with the plumb line 118. The door guide of the intermediate bracket 128 is adjusted to the height of the shaft door threshold.

[0042] After all guides 120 are aligned vertically one above the other by plumb bobs 122 or plumb lines 118, the assembly points 116 for the rails 106 are also arranged vertically one above the other. Thus, the rails 106 can be assembled without further alignment. The plumb lines 118 are removed after the rail system 100 is built and can be used again.

[0043] Figure 2 A diagram showing a generic bracket 102 used as a reference bracket 108 according to an embodiment is shown. The reference bracket 108 substantially corresponds to Figure 1 The reference bracket in Figure 1 As in the embodiment of the present invention, the reference bracket 108 is arranged in front of the wall 110 of the elevator shaft and is aligned in the installed position. The main support 112 is designed here as a C-shaped profile with an upper section 200, a lower section 202 and a web 204 connecting the upper section 200 and the lower section 202. The C-shape of the main support 112 is open to the wall 110. The upper section 200, the lower section 202 and the web 204 have cutouts to save material.

[0044] Here one of the guides 120 is shown with one of the plumb lines 118. Here the guide 120 has a first recess 206 in the upper section 200 and a second recess 208 in the lower section 202. When the universal support 102 is aligned in its intended position in space, the recesses 206, 208 are arranged vertically one above the other. The recesses 206, 208 are spaced apart by the width of the web 204. The plumb line 118 is tied off on the main support 112 in the region of the upper section 200 and extends downwards through the first recess 206 and the second recess 208 in the direction towards the lower end of the elevator shaft.

[0045] The notches 206, 208 are designed as V-shaped notches. The plumb line 118 rests on the low point of the notches. In order not to weaken the main support 112, the notches 206, 208 are arranged outside the load-bearing cross section of the main support 112. The notches 206, 208 are arranged in protrusions protruding from the upper section 200 and the lower section 202.

[0046] Figure 3 A diagram of a well assembly 104 is shown according to one embodiment. The well assembly 104 generally corresponds to Figure 1 The rail 106 of the rail system has been connected to one of the mounting points 116 of the pit assembly 104. The rail 106 is designed to vertically guide the car of the elevator equipment and the counterweight of the elevator equipment in the elevator shaft.

[0047] The pit assembly 104 comprises a bottom support 302 and a fixed support 304. The bottom support 302 has mounting points 116 at opposite ends. The length of the bottom support 302 thus corresponds substantially to the clear width of the track system. The fixed support 304 is fixed to the bottom support 302 and has a fixing point 126. The fixed support 304 positions the fixing point 126 in a fixed position relative to the mounting point 116. When positioning the pit assembly 104, the bottom support 302 and the fixed support 304 are slid back and forth until the fixing point 126 is flush with the suspended plumb bob or plumb line 118. In this position, the pit assembly 104 is bolted to the bottom 124. Here, the plumb line 118 is fixed to the fixing point 126 to tension the plumb line.

[0048] The bottom support 302 is designed as an upwardly open U-shaped profile. The fixing support 304 extends as a metal sheet along the bottom 124 up to an upwardly bent flange, on which the fixing points 126 are arranged at a specified distance from each other and in the correct relative position with respect to the assembly point 116. The fixing points 126 are arranged at opposite ends of the flange. The fixing support 304 has a larger cutout in the area of ​​the bottom 124 in order to reduce weight and save material.

[0049] The design of the fixing points 126 of the pit assembly 104 differs from the guide of the universal bracket. The fixing points 126 each have only one notch 306 through which the plumb line 118 is guided. The notch 306 is oriented in the direction of the bottom 124 and clamps the plumb line 118 when the plumb line is in a tensioned state. In order to fasten the plumb line 118 in the fixing point 126, the plumb line 118 can be knotted to the fixing point 126.

[0050] Figure 4 The diagram shows a diagram of arranging the universal bracket 102 used as the intermediate bracket 128 according to the embodiment. Here, the intermediate bracket 128 basically corresponds to Figure 2A universal bracket used as a reference bracket in FIG. 1 is shown. Here, the reference bracket in the upper floor of the building and the pit assembly at the lower end of the elevator shaft are already aligned with each other and fixed in their intended position. A plumb line 118 is tensioned between the guide of the reference bracket and the fixing point of the pit assembly. The plumb line 118 extends at a small distance from the wall 110 of the elevator shaft.

[0051] The intermediate bracket 128 is fixed to bolts 400, which are anchored in the wall 110 and protrude substantially horizontally into the elevator shaft. The intermediate bracket 128 is put on the bolts 400 and temporarily fixed using the alignment device of each bolt 400. Here, the plumb line 118 extends through the gap 402 between the main support 112 and the wall 110.

[0052] The bolt 400 is provided with a stop, by means of which the distance between the main support 112 and the wall 110 and the angular position of the entire intermediate support 128 can be adjusted. The stop is adjusted so that the plumb line 118 extends precisely through the two notches 206, 208 of the guide 120 of the intermediate support 128 without the plumb line 118 being deflected laterally. The distance and angular position of the intermediate support 128 are thereby adjusted so that the assembly point of the intermediate support 128 is arranged plumbly below the assembly point of the reference support. After alignment, the intermediate support 128 is finally fixed to the bolt 400 by tightening the locking nut. After tightening, the plumb line 118 extends through the guide 120 in a straight line, i.e. without any bends. In this way, the other intermediate supports can be aligned with the plumb line 118.

[0053] 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" etc. do not exclude a plurality. Furthermore, it should be pointed out that features or steps that have been 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. Any reference signs in the claims should not be interpreted as limiting.

Claims

1. A universal bracket (102) for a rail system (100) of an elevator device, wherein: The universal bracket (102) can be used at least as a reference bracket (108) and an intermediate bracket (128), and the universal bracket (102) has: a main support (112) capable of being positioned and aligned, the main support being part of the rail system and the universal bracket being fixed to the wall of the elevator shaft by means of the main support; two rail supports (114) arranged in the end region of the main support, wherein when the main support is fastened to a wall of the elevator shaft, the rail supports extend horizontally from the wall into the elevator shaft; and a mounting point (116) for at least one rail (106) of the rail system (100), The main support member (112) has two guide members (120) which are inseparably connected to the main support member (112) and are used to guide a plumb line (118) respectively, wherein the guide members (120) are respectively designed as notches. Therein, the mounting point (116) and the guide element (120) are arranged in a fixed relative position to one another.

2. The universal bracket (102) according to claim 1, wherein: The main support member (112) has an upper segment (200) and a lower segment (202) oriented substantially parallel to the upper segment, and the guide member (120) is respectively designed as a first recess (206) located on the upper segment (200) and a second recess (208) located on the lower segment (202).

3. The universal bracket (102) according to claim 1 or 2, wherein: The guide member (120) is arranged on a side of the main support member (112) facing away from the mounting point (116).

4. The universal bracket (102) according to claim 1 or 2, wherein: The universal bracket has at least one rail support (114) oriented transversely to the main support (112), the assembly point (116) is arranged on the end area of ​​the rail support (114) facing away from the main support (112) and the opposite end area of ​​the rail support (114) is connected to the main support (112).

5. A pit assembly (104) for a rail system (100) for an elevator device, wherein: The pit assembly (104) comprises a bottom support (302) and a fixed support (304) oriented transversely to the bottom support (302) and fixed directly to the bottom support (302), the bottom support (302) having at least one mounting point (116) for at least one track (106) of a track system (100), the track system (100) comprising a pit assembly (104) fixed to the bottom of the elevator shaft and the track mounted on the mounting point, and the fixed support (304) having two fixing points (126) inseparably connected to the fixed support (304), the fixing points being used to fix a plumb line (118) respectively, characterized in that the mounting point (116) and the fixing point (126) are arranged in a fixed relative position to each other.

6. A rail system (100) for an elevator device, wherein: The track system (100) comprises: at least one universal bracket (102) according to any one of claims 1 to 4 as a reference bracket (108), a pit assembly (104) according to claim 5, at least one universal bracket (102) according to any one of claims 1 to 4 as an intermediate bracket (128), and at least one track (106), wherein the fixing point (126) of the pit assembly (104) is arranged below the guide (120) of the reference bracket (108), and the guide (120) of the intermediate bracket (128) is positioned between the guide (120) of the reference bracket (108) and the fixing point (126) of the pit assembly (104), and the track is mounted on the mounting points (116) of the pit assembly (104), the intermediate bracket (128) and the reference bracket (108).

7. A method for aligning a rail system (100) of an elevator installation in an elevator shaft for the elevator installation, wherein: The universal bracket (102) according to any one of claims 1 to 4 is arranged as a reference bracket (108) in the area of ​​the upper end of the elevator shaft and is positioned and aligned on the wall (110) of the elevator shaft, a first plumb line (118) is guided through a first guide (120) of the reference bracket (108) and lowered to the lower end of the elevator shaft, and a second plumb line (118) is guided through a second guide (120) of the reference bracket (108) and lowered to the lower end of the elevator shaft, wherein the pit assembly (104) according to claim 5 is arranged at the lower end of the elevator shaft, a first fixing point (126) of the pit assembly (104) is positioned relative to the first plumb line (118), and a second fixing point (126) of the pit assembly (104) is positioned relative to the second plumb line (118). A first plumb line (118) is positioned, a first plumb line (118) is fixed to a first fixing point (126), a second plumb line (118) is fixed to a second fixing point (126), wherein at least one universal bracket (102) according to any one of claims 1 to 4 is positioned and aligned in the elevator shaft as an intermediate bracket (128) between the reference bracket (108) and the pit assembly (104) until the first guide member (120) of the intermediate bracket (128) is aligned with the first plumb line (118) and the second guide member (120) of the intermediate bracket (128) is aligned with the second plumb line (118), and at least one rail (106) of the rail system (100) is mounted on the mounting points (116) of the pit assembly (104), the intermediate bracket (128) and the reference bracket (108).

8. The method according to claim 7, wherein: The reference support (108) is positioned below the uppermost shaft door threshold of the elevator shaft and / or the intermediate support (128) is positioned below the shaft door threshold of the elevator shaft.

9. The method according to claim 7 or 8, wherein: The upper end of the plumb line (118) is hooked into the guide (120).

10. The method according to claim 7 or 8, wherein: The upper end of the plumb line (118) is fixed to a fixing mechanism of the elevator shaft.

11. The method according to claim 7 or 8, wherein: The upper end of the plumb line (118) is fixed to the reference bracket (108).

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