Elevator system

EP4536576A1Active Publication Date: 2025-04-16INVENTIO AG
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Patent Information

Application Number
EP2023731264
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-06-08
Filing Date
2023-06-07
Publication Date
2025-04-16
Estimated Expiration
2043-06-07

AI Technical Summary

Technical Problem

Existing elevator systems face challenges in simplifying and ensuring the safe installation of guide rails within the elevator shaft, with current mounting brackets being complex and prone to misalignment due to dimensional tolerances during manufacturing.

Method used

A U-shaped mounting bracket with a cross member and side supports is designed, where the cross member is fixed to the floor, and side supports project into the shaft, allowing for easy alignment and secure fastening of guide rails using elongated holes and adjustable mounting openings, ensuring stability and safety during installation.

Benefits of technology

This design simplifies the installation process, enhances safety by keeping the cross member within the floor, and provides a stable connection of guide rails, optimizing space utilization and accommodating dimensional variations in the elevator shaft.

✦ Generated by Eureka AI based on patent content.

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Abstract

A mounting bracket (2) for mounting to a hoistway door opening (6) of an elevator system (1) comprises a transverse support (7) and two lateral supports (8, 9) extending away from the transverse support. The transverse support (7) has two storey fixation portions (15) that can be fixed to a horizontal surface of the storey floor (11). Each of the lateral supports (8, 9) has a rail fastening portion (14) that extends parallel to the first direction and has at least one mounting opening (18) for fastening a guide rail (3) for guiding an elevator car (5).
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Description

[0001] ELEVATOR SYSTEM

[0002] The invention relates to an elevator system with a mounting bracket for connecting guide rails to an elevator shaft in the area of ​​a door-side shaft wall of the elevator shaft.

[0003] Elevators for transporting people and goods contain elevator cars that can move up and down in an elevator shaft. The elevator cars can be moved in the vertical elevator shaft using suspension elements, for example, in the form of suspension cables or belts, and a drive unit. In addition to the elevator car, the elevator usually includes at least one counterweight that moves in the opposite direction in the elevator shaft. To ensure that the elevator car is guided with sufficient linear precision, guide rails are used that are fixed in the elevator shaft. T-shaped metal profiles have long been known and in use. The guide rails consist of individual guide rail segments that are fixed in the elevator shaft by means of mounting brackets.

[0004] EP 1 321 416 discloses a guide rail assembly for elevators with such a mounting bracket. This mounting bracket has a U-shape, with the crossbar of the mounting bracket being fixed to the door-side shaft wall. Furthermore, the mounting bracket has two legs extending from the ends of the crossbar into the elevator shaft. Guide rails or guide rail segments are attached to these legs.

[0005] It is an object of the present invention to provide an elevator system that enables simple and safe installation of the guide rails in the elevator shaft. This object, or other objects, are achieved according to the invention with an elevator system having the features of claim 1.

[0006] The mounting structure can preferably have a first rail fastening section for fastening the guide rail on a front side of the mounting structure or on a side opposite the door-side shaft wall. The mounting structure can have a second rail fastening section adjoining the first rail fastening section for fastening the same guide rail. Both the first rail fastening section and the second rail fastening section are preferably each provided with at least one mounting opening for fastening the same guide rail. The guide rail can be mounted more easily and securely by extending the rail fastening section in this way.

[0007] If a separate attachment comprising the second rail fastening section is provided, it may be advantageous if the attachment is preferably designed as an angle element with two legs arranged at right angles, wherein one of the legs is formed by the first rail fastening section and the other leg of the angle element is formed by a profile wall section that rests or can be placed flat on the horizontal web section.

[0008] The attachment can be fixed to the side support using bolts, for example.

[0009] Some or all of the mounting openings in the first and / or second rail fastening section can be designed as elongated holes. The elongated hole preferably extends vertically.

[0010] Further advantageous embodiments can be found in the dependent claims.

[0011] Further details of the invention and the various advantages thereof are explained in more detail in the following part of the description.

[0012] The elevator system comprises a vertical elevator shaft in which an elevator car can be moved up and down between floors along guide rails. The guide rails are connected to the elevator shaft in the region of a door-side shaft wall of the elevator shaft. For this connection, the elevator system comprises a mounting bracket for at least one floor, preferably for several floors, and particularly preferably for each floor, to which the guide rails are attached. The mounting bracket preferably forms a U-shaped bracket structure with a cross member and two side members. The cross member runs along the door-side shaft wall. The two side members projecting from the cross member into the shaft space are preferably arranged at the ends of the cross member.The cross member has a horizontal floor fixing section that rests on and is fixed to a horizontal surface of the floor, so that the cross member is advantageously arranged substantially entirely within the floor. Consequently, in this preferred case, essentially only the side members are positioned or arranged in the shaft space. Each of the side members has a rail fixing section provided at the front end of the side member, which runs parallel to the door-side shaft wall and has at least one mounting opening for attaching the guide rail. Because the cross member can be arranged substantially entirely within the floor, increased safety for the installer during installation of the elevator system can be ensured.The invention is further based on the finding that only the arrangement of the shaft doors is decisive for the positioning of all essential components of the elevator car that affect its mobility. Accordingly, the mounting bracket for securing the guide rails in the elevator shaft must be aligned with the installed or to-be-installed shaft door. Consequently, it may be sufficient for the mounting bracket to be attached exclusively in one area of ​​the essentially horizontally oriented floor area. A further advantage is the improved space utilization of the elevator shaft. On the one hand, because the mounting bracket can be attached to the horizontal floor area, essentially only the side supports are arranged in the shaft space and exert pressure on the shaft space.On the other hand, the end-mounted installation of the guide rails on the side supports also leads to optimized space utilization. The special mounting bracket also provides structural advantages, as it ensures a particularly reliable and stable connection of the guide rails to the elevator shaft in the area of ​​the door-side shaft wall.

[0013] The main components, i.e., the cross member and the two side members of the mounting bracket, can serve the following purposes: The cross member, which includes at least one floor fixing section, serves to attach the mounting bracket to the elevator shaft. The guide rails are attached to the side members.

[0014] The guide rails can be designed as hollow profiles.

[0015] The mounting bracket can be constructed in one or more parts. A one-piece mounting bracket can, for example, be designed as a rigid bent part made of sheet metal. The side supports and the cross member can be made from a single sheet metal blank to form a single bent part. In the multi-part version, at least the side supports and preferably also the cross member can each be designed as rigid bent parts made of sheet metal. The multi-part design increases variability and has the advantage that the mounting bracket can be easily adapted to different shaft dimensions.

[0016] The respective side beam can have a horizontal web section extending from the cross beam to the guide rail. The rail fastening section can be connected to the horizontal web section at right angles and, if the cross beam is made of sheet metal, can be connected to the horizontal web section via a bevel. The horizontal web section can, for example, be flush with the horizontal floor fixing section of the cross beam.

[0017] It can be particularly advantageous if the respective side member is designed as a rigid bent part made of sheet metal, and the cross member has a vertical web section that is connected to the horizontal web section via a bevel. This results in a stable yet lightweight structure.

[0018] The cross member can have a vertical support wall section adjoining the floor fixing section and preferably created by a bevel—if made of sheet metal—as a stop to the door-side shaft wall or for contact with the door-side shaft wall. Obviously, the support wall section is thus the only element of the cross member located in the elevator shaft or arranged in the shaft space. The remaining elements of the cross member, i.e., the floor fixing section, are assigned to the floor or floor. The support wall section, which preferably extends horizontally between the side supports, can close off the cross member towards the elevator shaft.

[0019] The cross member should be arranged essentially entirely within the floor of the elevator. However, if such a mounting bracket is arranged at a plurality of shaft doors of the elevator system, it is necessary that all of these mounting brackets are aligned with one another in a travel direction of the elevator car, usually vertically. Dimensional tolerances during the manufacture of the elevator shaft can then result in the cross member of the mounting bracket protruding slightly into the shaft space of the elevator shaft. This slight protrusion still fulfills the requirement of the cross member being arranged essentially entirely within the floor of the elevator shaft, or more precisely, within a vertical projection of the floor of the elevator shaft.

[0020] The floor fixing section can have mounting openings for screw connections or other fastening means for attaching the mounting bracket to the floor. The mounting openings can be designed such that the mounting bracket is adjustably fixable to the floor or adjustably fixed. Adjustably fixable or fixed means that such pre-fixing is possible before a final alignment and subsequent final fixing of the mounting bracket. This can be achieved, for example, using a screw connection that allows a horizontal sliding movement of the mounting bracket in its pre-fixed state. Such adjustability enables a pre-fixing of the mounting bracket to the floor and a subsequent alignment and final fixing of the mounting bracket in the elevator shaft using alignment elements that can be arranged in the elevator shaft.

[0021] The shaft door, which can be provided for installation on the mounting bracket, comprises at least one door leaf. Essential components of the shaft door can include this at least one door leaf and / or a door threshold and / or at least one door leaf guide rail for guiding this at least one door leaf. Furthermore, the shaft door can contain coupling elements necessary for mechanically coupling the car door to the shaft door. These coupling elements can protrude into the cross-sectional area of ​​the elevator shaft. A further aspect of the invention could then relate to a mounting bracket for the elevator system described above.

[0022] Further individual features and advantages of the invention will become apparent from the following description of exemplary embodiments and from the drawings. They show:

[0023] Fig. 1 is a schematic representation of an elevator system according to the invention in a side view,

[0024] Fig. 2 is a simplified side view of a mounting bracket mounted on a floor of an elevator shaft,

[0025] Fig. 3 is a plan view of a mounting bracket according to another embodiment,

[0026] Fig. 4 is a perspective view of the mounting bracket from Fig. 3 mounted on the floor,

[0027] Fig. 5 is a perspective view of another mounting bracket,

[0028] Fig. 6 is an enlarged detail view of the mounting bracket (detail A of Fig. 5),

[0029] Fig. 7 an attachment for the mounting bracket, and

[0030] Fig. 8 a perspective view of the mounting bracket and a guide rail attached to it.

[0031] Fig. 1 shows an elevator system, designated overall by 1. Elevators are used for vertical transport in multi-story buildings. The building shown as an example has an elevator shaft 4 in which an elevator car 5 can be moved up and down to individual floors 10.1, 10.2, 10.3, 10.4. The vertical elevator shaft 4 is defined at its lower end by a shaft floor. The elevator shaft 4 has a shaft door opening 6 in the form of a wall opening for each floor 10.1, 10.2, 10.3, 10.4. The shaft door opening 6 provides access from the floor to the elevator car 5. The elevator shaft 4 is defined laterally by a door-side shaft wall 12.

[0032] The elevator car 5 is moved via support means (not shown here) to which the elevator car 5 is attached; the support means can be one or more support cables or support belts. The elevator car 5 can, for example, be self-supporting or arranged in a supporting structure, such as a support frame. The elevator car 5 shown in Fig. 1 has, in a simplified example, a cuboid-shaped car body and comprises a car floor, car walls, and a ceiling. Furthermore, the elevator car 5 generally has a car door (not shown) that closes off the interior of the elevator car 1 and faces the door-side shaft wall 12.

[0033] Guide rails 3 are arranged in the elevator shaft 4 to guide the elevator car 5. The elevator car 5 can be moved up and down along the guide rails 3 between the floors 10.1, 10.2, 10.3, and 10.4. The guide rails 3 are clearly connected to the elevator shaft 4 in the area of ​​the door-side shaft wall 12 via mounting brackets 2 designated by 2. The elevator system 1 comprises, for example, a mounting structure 2 for connecting the guide rails 3 to the floors 10.1 and 10.4, to which the guide rails 3 are fastened. Preferably, each floor 10.1, 10.2, 10.3, and 10.4 has such a mounting structure 2 to which the guide rails 3 are fastened. The mounting structure 2 has a horizontal floor fixing section 15 which rests on a horizontal surface of the floor 11 and is fixed thereto.Side supports 8 adjoin the floor fixing section 15, with a rail fastening section 14 being provided at the front end of each side support 8, to which the respective guide rail 3 is fastened. The rail fastening section 14 has one or more mounting openings (not shown here) for fastening the guide rail 3. The corresponding fastening means are indicated by short dashed lines. To extend the interface between the guide rail and the mounting bracket, the mounting structure has a second rail fastening section 31 adjoining the first rail fastening section. The elevator of Figure 1 can be designed as a traction elevator system 1 and, in addition to the elevator car 5, can have at least one counterweight (not shown) that can be moved in the opposite direction to the elevator car 5.According to one embodiment of the elevator system 1, special guide rails 3 can be used, which serve as linear guides for both the elevator car 5 and two counterweights. The traction elevator system 1 can have two drives (not shown) for this purpose. In this case, the two drives (e.g. traction sheave drives) drive the respective support means and thus move the elevator car 5 and the two counterweights in opposite directions. Each drive is assigned to one of the counterweights. To guide the elevator car 5 and the counterweights, two opposing guide rails 3 are provided on both sides of the elevator car 5. For this case, the elevator system can have special guide rails 3, which serve as linear guides for both the elevator car 5 and the respective counterweights. These guide rails 3 can be manufactured as one-piece rolling profiles.The guide rails 3 can be hollow profiles, for example, manufactured as one-piece rolled profiles. Further details on the design of such special guide rails and on the guidance of the car and the counterweights with shared guide rails can be found in WO 2020 / 127787 A1.

[0034] The mounting bracket 30 enables advantageous fixation of the guide rails 3 in the elevator shaft. The elevator system 1 can comprise several mounting structures, each of which is separately fixed to a different one of the floors 10.2, 10.3, 10.4 located above the lowest floor 10.1. To relieve the load on the mounting structure 2 assigned to floor 10.1, the guide rail 3 or a guide rail segment fixed to the lowest mounting structure 2 can be placed on the shaft floor of the elevator shaft 4, in particular supported by this shaft floor.

[0035] Figure 2 shows a shaft door opening 6 arranged on a floor 11. A shaft door 20 is arranged at this shaft door opening 5. The floor 11 comprises, for example, a horizontal concrete surface 11 and can comprise a walkable tread 11' during conventional use of the floor 10, wherein the walkable tread 10' can be formed, for example, by applying a screed. The mounting bracket 2 for fixing the guide rail 8 is accordingly fixed to the floor 10, preferably before applying the exemplary screed to the concrete surface, by means of the floor fixing section 15. A door threshold 21 is arranged above the floor fixing section 15, so that the door threshold 21 forms a flat surface with the tread 11'. Furthermore, the door threshold 21 can be integrated into the tread surface 11' in such a way that the tread surface 11' does not form a step or groove or the like.

[0036] The floor fixing section 15, preferably formed by a cross member 7, is closed by a support wall section 13 designated 13. This support wall section 13 forms a vertical stop that rests against the door-side shaft wall 12.

[0037] Essential components of the shaft door 20 are arranged in the vertical alignment of the floor 11. This means that these essential components of the shaft door 20 are arranged outside the shaft space of the elevator shaft 4. The essential components of the shaft door 20 include, for example, the door threshold 21, a door leaf 22, and a guide rail 23 for guiding the door leaf 22. The shaft door 20 can also comprise additional door leaves 22, whereby the shaft door 20 can be designed to close centrally or telescopically.

[0038] The shaft door 20 can further comprise, for example, coupling elements 24 for mechanical coupling to a coupling unit (not shown) arranged on the elevator car 5. Accordingly, the elevator car 5 can comprise a car door having a door drive motor. This door drive motor is provided, for example, for synchronous opening / closing of the shaft door coupled to the car door and, if necessary, also for unlocking the car door and / or the shaft door. With regard to the shaft door 20, the aforementioned coupling unit therefore serves the purpose of establishing an operative connection between the door drive motor and the shaft door 20. Accordingly, such coupling elements 24 protrude into the shaft space or the cross-sectional area of ​​the elevator shaft 4. As can be seen from Fig. 2, the shaft door 20 is arranged exactly in the vertical projection above the floor fixing section 15. Furthermore, Fig.2 that the side support 8 has a rail fastening section 14 running parallel to the door-side shaft wall 12 and provided at the front end of the side support, with a mounting opening 18 for fastening the guide rail 3 using fastening means indicated by 25. Screw connections are particularly suitable as fastening means.

[0039] The mounting structure 2 has a second rail fastening section 31, which adjoins the first rail fastening section 14 and is used to fasten the same guide rail 3. The first rail fastening section 15 is arranged below the horizontal web section 17, and the second rail fastening section 31 is arranged on an opposite side of the horizontal web section 17, viewed in the vertical direction, i.e., above the horizontal web section 17. For this purpose, a separate attachment 30 is provided, which encompasses the second rail fastening section 31. The first rail fastening section 15 and the second rail fastening section 31 together define a supporting "T."

[0040] The attachment 30 is evidently designed as an angle element with two legs arranged at right angles. One of the legs is formed by the first rail fastening section 15, and the other leg of the angle element is formed by a profile wall section 33 resting flat on the horizontal web section 17.

[0041] From Figure 3, it can be seen that the mounting structure is designed as a mounting bracket 2. Figure 3 shows such a mounting bracket 2 for an elevator system of the type described above. The mounting bracket 2 comprises a cross member 7 and two side supports 8 and 9 extending at right angles to the cross member 7. A guide rail 3 is attached or attachable to each end of each of these side supports 8, 9.

[0042] The mounting bracket 2 comprises the floor fixing section 15, which is arranged along the cross member 7 for directly fixing the cross member 7 to a floor. For example, the mounting bracket 2 can be fixed with screws 26 or similar fastening elements to be anchored in the floor. Mounting openings 19, created by holes or bores, are arranged in the floor fixing section 15. Using such mounting openings 19, the mounting bracket 2 can be adjustably fixed to the floor. Accordingly, a washer 29 can be used for adjustable fixing. Adjustment points 27 enable adjustment with respect to other mounting brackets 2 arranged in the elevator shaft, for example using plumb lines or comparable alignment elements, such as laser beams suitable for aligning the mounting bracket 2.

[0043] The mounting bracket 2 forms a U-shaped bracket structure in plan view. The cross member 7 running along the door-side shaft wall 12 and the two side members 8, 9 projecting from the cross member into the shaft space form this "U."

[0044] Figure 4 shows a mounting bracket 2 fixed to a floor 11. The mounting bracket 2 is fixed directly to the concrete surface of the floor 11 by means of its cross member 7. The cross member 7 has a bevel to form the vertical support wall section 13, which can be arranged at the end of the floor defined by the elevator shaft. The support wall section 13 forms a stop towards the door-side shaft wall and can close the cross member 7 off from the elevator shaft. The support wall section 13 obviously extends horizontally between the side supports 8 and 9. When the mounting bracket 2 is properly fixed to the floor, this bevel or the support wall section 13 preferably projects vertically downwards, so that a minimum distance between the guide rail fixable to the mounting bracket 2 and the floor can be maintained by means of the bevel.

[0045] The cross member 7 has the floor fixing section 15, which rests on the horizontal surface of the floor 11 and is fixed with or to it, so that the cross member 7 is arranged essentially entirely within the floor 11. Thus, essentially only the side members 8, 9 are arranged in the shaft space. Each of the side members 8, 9 has a rail fixing section 14 running parallel to the door-side shaft wall 12 and having at least one mounting opening 18 for attaching the guide rail 3 indicated in the drawing. The guide rails 3 are designed, for example, as T-shaped rail profiles. Of course, other shaped rail profiles could also be attached to the mounting bracket 2. The special end-face connection of the guide rail 3 to the mounting bracket 2 is particularly suitable for guide rails 3 designed as hollow rails.

[0046] As Fig. 4 further shows, each of the two rail fastening sections 14; 31 has a mounting opening 18; 32.

[0047] Fig. 5 shows structural details of another variant of a mounting bracket 2 for an elevator system 1 for mounting on a shaft door opening. The mounting bracket 2 with the cross member 7 and the two side supports 8, 9 forms a U-shaped bracket structure. The cross member 7 runs in a first direction, which direction, when the mounting bracket 2 is mounted, is predetermined by the door-side shaft wall. The cross member 7 then extends along the door-side shaft wall. The two side supports 8, 9 projecting away from the cross member 7 each run in a second direction that is perpendicular to the aforementioned first direction. The cross member 7 has a floor fixing section 15 that can be fixed to a horizontal surface of the floor 11 such that the cross member 7 can be arranged essentially entirely within the floor. Thus, essentially only the side supports 8, 9 can be arranged in the shaft space of the elevator shaft.Each of the side supports 8, 9 has a rail fastening section 14 running parallel to the first direction and provided at the free end of the side support, said section having two mounting openings 18. The two mounting openings 18 serve to fasten a guide rail (not shown). Instead of the two mounting openings 18 shown as an example, only one mounting opening 18 or even more than two mounting openings are of course conceivable for each rail fastening section 14. The at least one mounting opening 18 is designed as an elongated hole, which is advantageous with regard to assembly. Fastening screws or bolts for fastening the guide rails can be accommodated in the elongated hole.

[0048] The side supports 8, 9 and the cross support 7 are each designed as rigid bent parts made of sheet metal (e.g. sheet steel). Instead of the multi-part structure, the mounting bracket 2 can also be designed as a single piece and created from a single or common sheet metal blank. The cross support 7 has a vertical support wall section 13 adjoining the floor fixing section 15 and created by a bevel as a stop to the door-side shaft wall. Each side support 8, 9 has a horizontal web section 17 and a vertical web section 16. The information on orientation (horizontal and vertical) refers to the situation after assembly. The vertical web section 16 is connected in one piece to the horizontal web section 17 via a bevel. The two web sections 16 and 17 extend from the cross support 7 to the guide rail.The support wall sections 13 are arranged at the front end of the side supports 8, 9. The rail fastening section 14 adjoins the horizontal web section 17 at a right angle and is connected to the horizontal web section 17 via a bevel. The floor fixing section 15 forms a plate-like support structure, which support structure extends over the entire length of the cross support 7 (length viewed in relation to the aforementioned first direction). The floor fixing section 15 is designed to be sufficiently large to rest on the horizontal floor. It can be advantageous if the floor fixing section 15 acts on a horizontal surface on the floor that is at least as large as the combined cross-sectional areas of the guide rails.

[0049] Fig. 5 shows another mounting bracket 2 for an elevator system 2. Two mounting openings 18 formed as vertically extending elongated holes are arranged in the first rail fastening section 15. At least one mounting opening 32 formed as a vertically extending elongated hole is arranged in the second rail fastening section 31.

[0050] The respective side supports 8, 9 with the horizontal web section 17 and the first rail fastening section 15 are formed by a common component, which is preferably designed as a rigid bent part made of sheet metal. The attachment 30 comprising the second rail fastening section 31 is a separate component that is attached to the side supports 8, 9. In this case, the attachment 30 is fixed to the side supports 8, 9 by means of bolts. The attachment 30 is designed as an angle element with two legs 15, 33 arranged at right angles. The angle part also has a supporting wall 38 between the first rail fastening section and the profile wall section 33.

[0051] As can be seen primarily from Fig. 6, the mounting structure 2 for fastening the guide rail 3 comprises a coupling part 34 that runs along the first rail fastening section 15 and the second rail fastening section (31) and connects the two rail fastening sections 15, 31 to one another. The coupling part 34 has, on one side, a T-shaped engagement member 35 that can be inserted into a slot 32 in the first rail fastening section 15 or the second rail fastening section 31 and supported in the slot. On an opposite side, two through-openings 18 are provided for fastening screws for fastening to the guide rail 3.

[0052] The advantages of the special fastening arrangement with the two rail fastening sections are evident from Fig. 8. The guide rail 3 is designed as a hollow profile, preferably as a rolled profile. In the present case, it is essentially the guide rail of the type known from WO 2020 / 127787 A1. On the guide rail 3 or on a docking structure 36 assigned to the guide rail 3, several prefabricated receptacles 37.1, 37.2, 37.3, arranged one behind the other, are provided for fastening screws 28. Thanks to the extension with the second rail fastening section 31, a sufficiently secure and reliable fastening with at least two screws 28 can be ensured, even in a transition area between two rail segments.

Claims

Elevator system with a vertical elevator shaft (4) in which an elevator car (5) is movable up and down along guide rails (3) between floors (10.1, 10.2, 10.3, 10.4), wherein the guide rails (3) are connected to the elevator shaft (4) via a door-side shaft wall (12), wherein the elevator system (1) is provided for the connection to the guide rails (3) at least for one floor (10.1, 10.2, 10.3, 10.4).4) comprising a mounting structure (2) to which at least one of the guide rails (3) is attached, wherein the mounting structure (2) has a floor fixing section (15) on the door side which is fixed to a horizontal surface of the floor (11), and wherein the mounting structure (2) has a first rail fixing section (14) for fixing the guide rail (3), and wherein the mounting structure (2) has a second rail fixing section (31) adjoining the first rail fixing section (15) for fixing the guide rail (3).Elevator system according to claim 1, characterized in that the mounting structure (2) has at least one projecting side support (8, 9) with a horizontal web section (17), wherein the first rail fastening section (15) is arranged above or below the horizontal web section (17) and that the second rail fastening section (31) is arranged on a opposite side of the horizontal web section (17) when viewed in the vertical direction, i.e. if the first rail fastening section (15) is arranged above, then the second rail fastening section (31) is arranged below.Lifting system according to claim 2, characterized in that the side support (8, 9) with the horizontal web section (17) and the first rail fastening section (15) are formed by a common component, which is preferably designed as a rigid bent part made of a metal sheet, and that a separate attachment part (30) comprising the second rail fastening section (31) is provided, which is attached or attachable to the side support (8, 9).

4. Lifting system according to one of claims 1 to 3, characterized in that the side support (8, 9) has a vertical web section (16) adjoining the horizontal web section (17) and preferably connected to it via a bend.

5. Lifting system according to one of claims 1 to 4, characterized in that in the first rail fastening section (15) two mounting openings (18) designed as elongated holes are arranged and / or that in the second rail fastening section (31) at least one mounting opening (32) designed as an elongated hole is arranged.

6. Elevator system according to one of claims 1 to 4, characterized in that the mounting structure (2) is designed as a U-shaped mounting bracket, wherein the mounting bracket is composed of two side supports (8, 9) and a cross support (7) extending along the door-side shaft wall (12) and connecting the side supports (8, 9) to each other, wherein the side supports (8, 9) are preferably oriented perpendicularly away from the cross support (8, 9).

7. Elevator system according to one of claims 1 to 6, characterized in that the mounting structure (2) for fastening the guide rail (3) comprises a coupling part (34) which runs along the first rail fastening section (15) and the second rail fastening section (31) and connects the two rail fastening sections (15, 31) to each other.

8. Lifting system according to one of claims 1 to 7, characterized in that the coupling part (34) has on one side a T-shaped engagement element (35) which can be inserted into an elongated hole (32) of the first rail fastening section (15) or second rail fastening section (31) and supported in the elongated hole, and that on an opposite side at least one and preferably two through-openings for fastening screws for fastening to the guide rail (3) are provided.

9. Elevator system according to one of claims 1 to 8, characterized in that the guide rail (3) is designed as a hollow profile and preferably as a rolled profile. is and that the guide rail (3) or a docking structure (36) associated with the guide rail (3) has several receptacles (37) arranged one behind the other for fastening screws (28).