Elevator system

Abstract

A mounting bracket (2) for mounting to a hoistway door opening (6) of an elevator system (1) comprises a transverse support (7) extending in a first direction and two lateral supports (8, 9) extending away from the transverse support. The transverse support (7) has a storey fixation portion (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).

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 arrangement for elevators with such a mounting bracket. This mounting bracket has a U-shape, wherein the crossbeam of the mounting bracket is fixed to the door-side shaft wall. Furthermore, the mounting bracket has two legs that extend from the ends of the crossbeam into the elevator shaft. Guide rails or guide rail segments are attached to these legs. Both the crossbeam and the legs are therefore arranged within the cross-sectional area of ​​the elevator shaft, thereby reducing the usable shaft space, i.e. the free cross-sectional area of ​​the elevator shaft suitable for moving the elevator car. The cross-sectional area of ​​the elevator shaft is understood below to mean the area, seen in plan view or in the vertical direction, for the cavity defined by the elevator shaft.The shaft space, which is often rectangular in plan view, i.e. the cross-sectional area of ​​the elevator shaft, is limited by the shaft walls.

[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 is achieved according to the invention with an elevator system having the features of claim 1.

[0006] 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 the mobility of the elevator car. Accordingly, the mounting bracket for fixing the guide rails in the elevator shaft must be aligned with respect to the installed or to-be-installed shaft door. Consequently, it may be sufficient for the mounting bracket to be attached exclusively in an 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, thus 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.

[0007] The main components, namely the cross member and the two side members of the mounting bracket, 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.

[0008] The guide rails can be designed as hollow profiles.

[0009] For easy installation, it may be advantageous if at least one mounting opening in the rail fastening section is designed as an elongated hole. The elongated hole can accommodate fastening screws or bolts for securing the guide rails.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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 is 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, by means of a screw connection that allows a horizontal sliding movement of the mounting bracket in its pre-fixed state. The floor fixing section, for example designed as a passage opening, can be larger than required by the dimensions of the screw by means of which the mounting bracket is or can be fixed to the floor.A washer-shaped base plate, for example, ensures pre-fixing or final fixing of the mounting bracket to the floor through the degree of its compression by means of the screw. This adjustability allows for pre-fixing of the mounting bracket to the floor and subsequent alignment and final fixing of the mounting bracket in the elevator shaft using alignment elements that can be arranged in the elevator shaft.

[0016] A simple and reliable assembly can be achieved if the floor fixing section has a plate-like and preferably flat support structure formed by a metal sheet, which support structure extends over the entire length of the cross member.

[0017] The floor fixing section can engage a horizontal surface on the floor that is at least as large as the cross-sectional area of ​​the guide rails. Thanks to the sufficiently large horizontal support surface, the guide rails can be securely mounted in the elevator shaft from the door-side shaft wall.

[0018] In the vertical projection, the landing door can be arranged above the landing section. The landing section of the crossbeam can thus be used as a suitable platform supporting the landing door at the floor level.

[0019] The shaft door, which is provided for installation on the mounting bracket, comprises at least one door leaf. Essential components of the shaft door may 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 may contain coupling elements necessary for the mechanical coupling of the car door to the shaft door.

[0020] Coupling elements can protrude into the cross-sectional area of ​​the elevator shaft.

[0021] A further aspect of the invention then relates to a mounting bracket for an elevator system for mounting on a shaft door opening, and in particular for the elevator system described above. The mounting bracket preferably forms a bracket structure that is U-shaped in plan view and has a cross member extending in a first direction and two side supports projecting away from the cross member, each extending in a second direction that runs transversely and preferably at right angles to the first direction. The cross members and the two side supports are preferably arranged relative to one another in such a way that they define the aforementioned "U". When the mounting bracket is mounted in the elevator system, the first direction is predetermined by the door-side shaft wall, along which this direction runs.The cross member has a floor fixing section that can be fixed to a horizontal surface of the floor such that the cross member can be arranged substantially entirely within the floor, while the side members can be arranged substantially only in the shaft space. Each of the side members has a rail fixing section running parallel to the first direction and having at least one mounting opening for fixing a guide rail for guiding an elevator car. The rail fixing section can be provided at the front end or at the end of the cross member facing away from the cross member.

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

[0026] Fig. 5 is a perspective view of another mounting bracket, and

[0027] Fig. 6 the mounting bracket from Fig. 5 in a top view.

[0028] 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.

[0029] 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.

[0030] 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, 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 2. The elevator system 1 comprises, for example, a mounting bracket 2 for each of the floors 10.1 and 10.4 for connecting to the guide rails 3, to which the guide rails 3 are fastened. Preferably, each floor 10.1, 10.2, 10.3, 10.4 has such a mounting bracket 2 to which the guide rails 3 are fastened. The mounting bracket 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 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.

[0031] The elevator in 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 exemplary 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 rolling 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.

[0032] The mounting bracket 30 enables advantageous fixation of the guide rails 3 in the elevator shaft. The elevator system 1 can comprise several mounting brackets, 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 bracket 2 assigned to floor 10.1, the guide rail 3 or a guide rail segment fixed to the mounting bracket 30 can be placed on the shaft floor of the elevator shaft 4, in particular supported by this shaft floor.

[0033] Figure 2 shows a shaft door opening 6 arranged at 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 surface 11' during conventional use of the floor 10, wherein the walkable tread surface 10' can be formed, for example, by inserting a screed.

[0034] The mounting bracket 2 for securing the guide rail 8 is thus fixed to the floor 10, preferably before the exemplary screed is laid on 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 surface 11'. Furthermore, the door threshold 21 can be integrated into the tread surface 11' such that the tread surface 11' does not form a step, groove, or the like.

[0035] From Figure 2, it can also be seen that 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.

[0036] 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.

[0037] 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 respect 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.

[0038] As can be seen from Fig. 2, the shaft door 20 is arranged exactly in the vertical projection above the floor fixing section 15.

[0039] Furthermore, Fig. 2 shows that the side support 8 has a rail fastening section 14 provided at the front end of the side support, which runs parallel to the door-side shaft wall 12 and has a mounting opening 18 for fastening the guide rail 3 using fastening means indicated by 25. Screw connections are particularly suitable as fastening means.

[0040] Figure 3 shows a mounting bracket 2 for an elevator system of the type described above. The mounting bracket 2 comprises the cross member 7 and two side supports 8 and 9 running at right angles to the cross member 7. A guide rail 3 is fastened or can be fastened to the ends of each of these side supports 8, 9.

[0041] 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.

[0042] 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."

[0043] 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.

[0044] 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, with at least one mounting opening 18 for attaching the guide rail 3 indicated schematically. 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.

[0045] 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.

[0046] 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 right angles and is connected to the horizontal web section 17 via a bevel.

[0047] As can be seen in particular from Fig. 6, the floor fixing section

[0048] 15 a plate-like support structure, which support structure extends over the entire length of the cross member 7 (length seen with respect to the aforementioned first direction).

[0049] The floor fixing section 15 is designed to be sufficiently large to rest on the horizontal floor of the floor. It may be advantageous if the floor fixing section 15 engages a horizontal surface on the floor that is at least as large as the combined cross-sectional areas of the guide rails.

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) comprises a mounting bracket (2) for the connection to the guide rails (3) at least for one floor (10.1, 10.2, 10.3, 10.4), to which the guide rails (3) are attached, wherein the mounting bracket (2) has a crossbeam (7) extending along the door-side shaft wall (12) and two side beams (8, 9) projecting away from the crossbeam (8, 9), wherein the crossbeam (7) has a floor fixing section (15) which is fixed to a horizontal surface of the floor (11), and wherein each of the side beams (8, 9) has a rail fastening section (14) extending parallel to the door-side shaft wall (12) with at least one mounting opening (18) for fastening the guide rail (3). Elevator system according to claim 1, characterized in that the at least one mounting opening (18) in the rail fastening section (14) is designed as an elongated hole.Elevator system according to claim 1 or 2, characterized in that at least the side supports (8, 9) and preferably the cross support (7) are each designed as bent parts made of a metal sheet, or that the side supports (8, 9) and the cross support (7) are created from a common sheet blank and formed by a common bent part made of a metal sheet. Elevator system according to any one of claims 1 to 3, characterized in that the respective side support (8, 9) extends from the cross support (7) to the guide rail. (3) has a horizontal web section (17) extending, wherein the rail fastening section (14) connects at right angles to the horizontal web section (17) and is preferably connected to the horizontal web section (17) via a bend. Elevator system according to claim 4, characterized in that the crossbeam (7) has a vertical support wall section (13) adjoining the floor fixing section (15) and preferably formed by a bend, as a stop against the door-side shaft wall or for abutting the door-side shaft wall (12). Elevator system according to any one of claims 1 to 5, characterized in that the crossbeam (7) has a vertical support wall section (13) adjoining the floor fixing section (15) and preferably formed by a bend, as a stop against the door-side shaft wall or for abutting the door-side shaft wall (12). Elevator system according to any one of claims 1 to 6, characterized in that the floor fixing section (15) has a plate-like and preferably planar support structure formed by a metal sheet, which support structure extends over the entire length of the crossbeam (7).Elevator system according to any one of claims 1 to 7, characterized in that the floor fixing section (15) acts on a horizontal surface on the floor (11) which is at least as large as the cross-sectional areas of the guide rails (3). Elevator system according to any one of claims 1 to 8, characterized in that the shaft door (20) is arranged in the vertical projection above the floor fixing section (15). Mounting bracket (2) for mounting on a shaft door opening (6) of an elevator system (1), in particular the elevator system according to any one of claims 1 to 9, wherein the mounting bracket (2) has a crossbeam (7) extending in a first direction and two side beams (8, 9) projecting away from the crossbeam, wherein the crossbeam (7) has a floor fixing section (15) which can be fixed to a horizontal surface of the floor (11), and wherein each of the side beams (8, 9) has one parallel to the first direction. running rail fastening section (14) with at least one has a mounting opening (18) for attaching a guide rail (3) for guiding an elevator car (5).

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