Elevator system and guide device therefor

Abstract

The invention relates to an elevator system and a guide device therefor. A guide device for an elevator system includes: a bracket; the rollers are mounted on the bracket; wherein at least one of the rollers is mounted on the support through a damping device, the damping device comprises a swing rod, a first end of the swing rod is rotatably mounted on the support, a second end of the swing rod is provided with a first notch, and the rollers are mounted on the swing rod; the guide pin is mounted on the bracket and penetrates through the first notch of the oscillating rod; the friction pieces are installed on the swing rod and make friction contact with the guide pin in the swing process of the swing rod. The guiding device according to the embodiment of the invention provides a damping device with a simple structure.

Description

Technical Field

[0001] The present invention relates to the field of elevators, and more particularly, to a guide device for maintaining the stability of an elevator car during operation and an elevator system equipped with the guide device. Background Art

[0002] The roller device on the elevator car that engages with the elevator guide rail is one of the main components that affect the smoothness of the elevator operation. It mainly guides the movement of the car along the elevator guide rail. In long-term use, the elevator guide rail arranged in the hoistway may be uneven, which may cause horizontal vibration of the car. There are some hydraulic-based damping devices to alleviate such vibrations. Summary of the invention

[0003] The purpose of this application is to solve or at least alleviate the problems existing in the prior art.

[0004] According to one aspect, there is provided a guide device for an elevator system, comprising: Bracket; a plurality of rollers mounted to the bracket; Wherein, at least one of the plurality of rollers is mounted to the bracket via a damping device, and the damping device comprises: A swing rod, wherein a first end of the swing rod is rotatably mounted to the bracket, a second end of the swing rod is provided with a first notch, and the roller is mounted on the swing rod; a guide pin mounted to the bracket and passing through the first slot of the swing lever; and one or more friction members mounted to the swing lever and in frictional contact with the guide pin during the swing of the swing lever.

[0005] Optionally, in an embodiment of the guide device, the guide pin includes parallel relative planes, and the one or more friction members include two friction members respectively in friction contact with the relative planes.

[0006] Optionally, in an embodiment of the guide device, the swing rod has a first through hole intersecting with the first notch, and the two friction members are mounted to the first through hole from opposite sides.

[0007] Optionally, in the embodiment of the guide device, each of the friction members comprises: A friction member body having an external thread, wherein the external thread of the friction member body cooperates with the internal thread of the first through hole, and the friction member body further comprises a torque receiving end; Friction end; and An elastic member between the friction member body and the friction end.

[0008] Optionally, in the embodiment of the guide device, the outer end of the friction end is a spherical surface or a flat surface.

[0009] Optionally, in an embodiment of the guide device, a friction material coating is provided on a contact area on the relative plane of the guide pin that is in frictional contact with the friction member.

[0010] Optionally, in an embodiment of the guide device, a groove is provided on the relative plane of the guide pin, and during the swinging process of the swinging arm, the contact area where the friction member and the guide pin are in frictional contact is located in the groove.

[0011] Optionally, in an embodiment of the guide device, the groove is configured to be in an arc shape that matches a trajectory of the friction member as the swinging rod swings.

[0012] Optionally, in an embodiment of the guiding device, the arc-shaped groove has a varying depth, wherein the depth of the middle portion of the arc-shaped groove is greater than the depth of both ends of the arc-shaped groove, and the depth of the arc-shaped groove gradually decreases from the middle portion to both ends.

[0013] Optionally, in an embodiment of the guide device, the bracket includes a base and one or more columns extending from the base, the first end of the swing rod is rotatably mounted to the base, and the guide pin is connected to the column approximately parallel to the base.

[0014] Optionally, in an embodiment of the guide device, the guide pin includes a first end and a second end opposite to each other and a guide pin body between the first end and the second end, the first end of the guide pin is fixed to the column, and a spring is arranged between the second end of the guide pin and the swing rod.

[0015] Optionally, in an embodiment of the guide device, the cross-section of the first notch is rectangular, the first end and the second end of the guide pin have external threads, and the cross-section of the guide pin body is rectangular.

[0016] Optionally, in an embodiment of the guide device, the guide device also includes a limit pin, which is connected to the column in parallel with the guide pin, the limit pin passes through the second through hole on the swing rod, and the limit pin includes a stop block, which limits the maximum swinging limit of the swing rod in the direction away from the guide rail.

[0017] Optionally, in an embodiment of the guide device, the multiple rollers include: a first roller and a second roller arranged side by side and a third roller whose rotation plane is perpendicular to the first roller and the second roller, and the first roller, the second roller and the third roller are all mounted to the bracket via the damping device.

[0018] An elevator system is also provided, comprising: elevator cars; and The guide device according to various embodiments is connected to the elevator car to guide the elevator car to move along an elevator guide rail.

[0019] The guide device according to the embodiment of the present invention provides a damping device with a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure of the present application will become more easily understood with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the drawings are used to represent similar components, among which: Figure 1 is a schematic diagram of an exemplary elevator system; Figure 2 is a perspective view of an exemplary guide device mounting frame for an elevator car; Figure 3 and Figure 4 Showing three-dimensional views of a guide device according to an embodiment of the present invention at different angles; Figure 5 and Figure 6 Schematic diagrams showing different angles of a swing lever according to an embodiment of the present invention; Figure 7 A perspective view of a guide pin according to an embodiment of the present invention is shown; Figure 8 and Fig. 9 Shows three-dimensional views of guide pins at different angles according to another embodiment of the present invention; Fig.10 Shows Figure 8 and Fig. 9 A cross-sectional view of a guide pin in FIG. Fig.11 A schematic diagram showing contact between a friction member and a guide pin according to an embodiment of the present invention; and Fig.12 and Fig.13 Enlarged views of the contact position between the friction member and the guide pin at different angles are shown. DETAILED DESCRIPTION

[0021] Figure 11 is a perspective view of an elevator system 101, which includes an elevator car 103, a counterweight 105, ropes 107, guide rails 109, a traction machine 111, and an elevator system controller 115. The elevator car 103 and the counterweight 105 are connected to each other via ropes 107. The ropes 107 can include or be configured as, for example, ropes, steel cables, and / or coated steel belts, and in this embodiment, the ropes are configured as rope belts integrating multiple ropes. The counterweight 105 is configured to balance the load of the elevator car 103 and is configured to facilitate synchronized reverse movement of the elevator car 103 relative to the counterweight 105 within the elevator shaft 117 and along the guide rails 109. The ropes 107 engage the traction machine 111, which is part of the top structure of the elevator system 101. The traction machine 111 is configured to control movement between the elevator car 103 and the counterweight 105.

[0022] The elevator system controller 115 is shown positioned in an elevator system controller room 121 of the elevator shaft 117, and is configured to control the operation of the elevator system 101 and, in particular, the elevator car 103. For example, the elevator system controller 115 can provide drive signals to the traction machine 111 to control the acceleration, deceleration, leveling, stopping, etc. of the elevator car 103. When moving up or down in the elevator shaft 117 along the guide rails 109, the elevator car 103 can stop at one or more landings 125 as controlled by the elevator system controller 115. Although shown in the elevator system controller room 121, those skilled in the art will appreciate that the elevator system controller 115 can be positioned and / or configured at other locations or locations within the elevator system 101. The traction machine 111 can include a motor or similar drive mechanism.

[0023] Although shown and described with respect to a rope system, elevator systems that employ other methods and mechanisms for moving an elevator car within an elevator hoistway may also employ embodiments of the present disclosure. Figure 1 These are non-limiting examples presented for illustrative and explanatory purposes only.

[0024] Now turn Figure 2 ,in Figure 2 2 is a partial perspective view of an elevator car frame 200 on which two guide devices 202 for an elevator car are mounted. The elevator car frame 200 includes a transverse frame 206 extending between a pair of vertical frames 208, which is mounted on the top of the elevator car. The guide device 202 for the elevator car is mounted to at least one of the transverse frame 206 and the vertical frame 208 through a bracket 1 as is known in the art. A plurality of rollers 31, 32, 33 are mounted to the bracket 1 and are thereby fixed to the elevator car. Although in Figure 2Only a pair of guide devices 202 at the top of the elevator car is shown. Optionally, a pair of guide devices 202 may also be arranged at the bottom or middle of the elevator car, or two or more pairs of guide devices 202 may be respectively located at the top, middle and / or bottom of the elevator car.

[0025] The guide devices 202 for the elevator car are each configured to engage with and move along the guide rails 109, which are approximately located at the gap G of the guide devices 202 on both sides and contact the respective rollers 31, 32, 33, so that when the car moves, the respective rollers 31, 32, 33 roll on the respective surfaces of the guide rails 109. For example, Figure 2 The first roller 31 and the second roller 32 shown in FIG. roll on opposite sides of the guide rail 109, while the third roller 33 rolls on the edge of the guide rail 109. In the current configuration, the third roller 33 may also be referred to as a lateral roller, and the first roller 31 and the second roller 32 may be referred to as a front and rear roller. Figure 2 A particular configuration is shown in FIG. 1 , but those skilled in the art will appreciate that the embodiments provided herein may be applicable to a variety of other guide device configurations for elevator cars.

[0026] Continue to refer Figure 3 and Figure 4 , which shows a stereoscopic view of the guide device at different angles. As described above, the guide device includes: a bracket 1 and a plurality of rollers 31, 32, 33 mounted to the bracket 1. In order for part or all of the plurality of rollers 31, 32, 33 to be able to keep in contact with the guide rail 109 during the movement of the car and to reduce vibration during rolling, at least one of the plurality of rollers 31, 32, 33 is mounted to the bracket 1 through a damping device. It should be understood that although in the illustrated embodiment, the guide device includes three rollers 31, 32, 33, and the three rollers 31, 32, 33 are all mounted to the bracket 1 through a damping device according to an embodiment of the present invention. However, in an alternative embodiment, the guide device may include other numbers of rollers. In addition, one, part or all of the rollers may be mounted to the bracket through a damping device according to an embodiment, and the other rollers may be directly mounted to the bracket 1 or mounted to the bracket 1 through other types of damping devices or mounted to the bracket 1 in any other suitable manner.

[0027] According to the embodiment, the damping device includes: a swing rod 2, a first end of the swing rod 2 is rotatably mounted to the bracket 1, a second end of the swing rod 2 is provided with a first slot 282, and a roller is mounted on the swing rod 2; a guide pin 22, the guide pin 22 passes through the first slot 282 of the swing rod 2, and the dimensions of the first slot 282 of the swing rod 2 and the guide pin 22 are set to allow the swing rod 2 to swing within a certain range, and its swinging direction is close to and away from the guide rail 19, and its swinging range is limited by the guide rail 19 on the one hand, and can be limited by the limit pin introduced below on the other hand; and one or more friction members 23, the friction member 23 is mounted to the swing rod 2 and is in frictional contact with the guide pin 22 during the swinging process of the swing rod, and a damping effect is provided by the friction between the friction member 23 and the guide pin 22.

[0028] In some embodiments, the bracket 1 includes a base 11, and a plurality of mounting holes 10 may be provided on the base 11 for fixing the base 11 to the horizontal frame 206 and / or the vertical frame 208. A mounting plate 13 may also be provided on the base 11, and the first end (the lower end in the figure) of the swing rod 2 may be rotatably fixed to the mounting plate 13, which, for example, is passed through the mounting plate 13 and the opening 291 of the first end of the swing rod 2 by a bolt 21 to serve as the swing axis of the swing rod 2. The bracket 1 also includes one or more columns 12 extending from the base 11, and the one or more columns 12 may be used to install the guide pin 22, the stop pin and other components. In the illustrated embodiment, the column 12 is L-shaped in cross section, and two columns 12 are provided, one of which is used to install the damping device of the first roller 31, and the damping devices of the second roller 32 and the third roller 33 share another column and are installed to two adjacent walls of the other column 12.

[0029] Continue to refer Figures 5 to 7 In some embodiments, the swing lever 2 may be formed as a square column, which includes a first relative plane 28 and a second relative plane 29. The first relative plane 28 has a first notch 282 for arranging the guide pin 22 and a second notch 281 for arranging the limit pin 25. The second relative plane 29 may have an opening 291 for rotationally connecting with the base 11 of the bracket 1, a first through hole 293 for installing a friction member, and a second through hole 292 for installing a roller, and the second through hole 292 is located between the first through hole 293 and the opening 291.

[0030] In some embodiments, the guide pin 22 includes a first end 221, a second end 222, and a guide pin body 223 between the first end 221 and the second end 222, and the friction member is in frictional contact with the guide pin body 223. In some embodiments, the guide pin body 223 may include parallel opposing surfaces 2231, 2233, and the one or more friction members include two friction members 23 that are in frictional contact with the opposing surfaces 2231, 2233, respectively. The first end 221 of the guide pin 22 is used to be mounted to the column 12, wherein the first end 221 of the guide pin 22 may be configured to have an external thread for mounting to the column 12. When the guide pin 22 is mounted to the column 12, the guide pin 22 is substantially parallel to the base 11, and the second end 222 of the guide pin 22 may also have an external thread. In some embodiments, the second end 222 of the guide pin 22 is substantially elliptical, and includes a relative plane wall 2221 and a relative arc wall 2222, and the relative arc wall 2222 is formed with a thread, and the relative plane wall 2221 is flush with the relative surface of the guide pin body 223 to form a continuous plane. In some embodiments, a nut 226 may be installed on the second end 222 of the guide pin 22, and a spring 227 is arranged between the nut 226 and the swing rod 2, thereby pushing the swing rod 2 and the roller mounted thereon to the guide rail 19, and the spring 227 can also absorb the vibration of the roller caused by the unevenness of the guide rail 19. The position of the nut 226 installed at the second end 222 of the guide pin 22 can be adjusted to adjust the pressure applied by the spring 227 to the swing rod 2, thereby adjusting the damping parameters.

[0031] In some embodiments, the first notch 282 may be a through hole or an open notch (such as a U-shaped notch), etc. In this case, the second end of the swing rod 2 forms a fork shape. In some embodiments, the guide pin 22 includes a pair of parallel opposing surfaces 2231, 2233, and the one or more friction members 23 include two friction members that are in friction contact with the opposing planes, respectively. Figure 5 As shown, the cross section of the first notch 282 on the swing lever 2 may be rectangular, and the cross section of the guide pin body 223 is also rectangular and matches the first notch 282. The guide pin body 223 may include parallel relative surfaces 2231, 2233 and relative top sides 2232 and bottom sides. In some embodiments, one or more friction members 233 include two friction members arranged on opposite sides of the guide pin body 223, alternatively, only one friction member 23 may be provided. In alternative embodiments, the friction member may be in frictional contact with the top side 2233 of the guide pin body 223. In some embodiments, the guide pin 22 may have an area 224 in frictional contact with the friction member. In some embodiments, the contact area 224 may be provided with a friction material coating, and in some embodiments, the contact area 224 may be formed as a groove. In alternative embodiments, the contact area 224 may also be flush with the surrounding plane.

[0032] Continue to refer Figures 8 to 13 In some embodiments, the area where the guide pin 22 and the friction member 23 are in friction contact is located in the groove 2240. In some embodiments, the groove 2240 is configured to be an arc that matches the trajectory of the friction member 23 when the swing rod 2 swings. In some embodiments, the arc-shaped groove 2240 may have a variable depth. Fig.10 As shown most clearly in FIG. 2 , in the circumferential direction, the depth of the middle portion 2241 of the arc-shaped groove 2240 is greater than the depth of the two ends 2242 of the arc-shaped groove 2240, and the depth of the arc-shaped groove 2240 gradually decreases from the middle portion 2241 to the two ends 2242. In addition, in the radial direction, the arc-shaped groove 2240 can also be set to be deeper in the middle and shallower on both sides to better cooperate with the friction end 234 with a spherical outer end.

[0033] like Figure 5 and Figure 6 As shown, the swing lever has a first through hole 293 intersecting with the first notch 282, and the one or more friction members 23 include two friction members 23 mounted to the first through hole 293 from both sides. Figures 11 to 13 As shown, two friction members 23 are arranged to contact the opposite surfaces 2231, 2233 of the guide pin 22. In some embodiments, each friction member 23 includes: a friction member body 232 with an external thread, the external thread of the friction member body 232 cooperates with the internal thread of the first through hole 293, and the friction member body 232 also includes a torque receiving end 231 (such as a hexagonal groove as shown or alternatively a flat groove, a cross groove, etc.); a friction end 234; and an elastic member 233 between the friction member body 232 and the friction end 234, such as a spring. In some embodiments, the outer end surface of the friction end 234 is spherical or flat. In the case where the groove 2240 has a depth variation, the friction end 234 with a spherical outer end surface can better match the groove 2240. In the case where the groove 2240 has a uniform depth, the friction end 234 with a flat outer end surface may be more suitable. The threaded connection between the friction member 23 and the swing rod allows the positive pressure and friction force between the friction member 23 and the guide pin 22 to be adjusted, thereby further adjusting the damping parameters. In addition, this can also facilitate the maintenance or replacement of the friction member 23. For example, the friction member 23 can be tightened when the friction force is insufficient.

[0034] In some embodiments, the guide device further includes a stop pin 25, which is connected to the column 12 in parallel with the guide pin 22, passes through the second through hole 281 on the swing rod 2, and includes a stopper 225 on the stop pin 25. For example, the stop pin 25 may also have an external thread, and the stopper 225 is a nut connected thereto. The setting of the stopper 225 can limit the maximum limit of the swing rod 2 to swing away from the guide rail. In some embodiments, the roller is installed between the second through hole 281 and the first through hole 293.

[0035] In some embodiments, the plurality of rollers include: a first roller 31, a second roller 32, and a third roller 33 arranged side by side, wherein the rotation plane of the third roller 33 is perpendicular to the rotation planes of the first roller 31 and the second roller 32. The first roller 31, the second roller 32, and the third roller 33 are all mounted to the base 11 of the bracket 1 through a damping device.

[0036] The guide device according to the embodiment of the present invention can easily adjust the damping parameter by adjusting the position of the friction member. In addition, the pressure on the swing rod can also be easily adjusted by adjusting the position of the nut to further adjust the damping parameter. In addition, compared with the hydraulic damping system, the guide device according to the embodiment of the present invention has lower cost.

[0037] The specific embodiments described above in this application are only for more clearly describing the principles of this application, wherein each component is clearly shown or described to make the principles of the present invention easier to understand. Without departing from the scope of this application, those skilled in the art can easily make various modifications or changes to this application. Therefore, it should be understood that these modifications or changes should be included in the scope of patent protection of this application.

Claims

1. A guide device for an elevator system, include: Bracket; a plurality of rollers mounted to the bracket; Wherein, at least one of the plurality of rollers is mounted to the bracket via a damping device, and the damping device comprises: A swing rod, wherein a first end of the swing rod is rotatably mounted to the bracket, a second end of the swing rod is provided with a first notch, and the roller is mounted on the swing rod; a guide pin mounted to the bracket and passing through a first notch of the swing arm; and One or more friction members are mounted to the swing arm and are in frictional contact with the guide pin during the swing arm's swinging process.

2. The guide device according to claim 1, It is characterized in that The guide pin includes parallel opposing surfaces, and the one or more friction members include two friction members respectively in frictional contact with the opposing surfaces.

3. The guide device according to claim 2, It is characterized in that The swing lever has a first through hole intersecting with the first notch, and the two friction members are mounted to the first through hole from opposite sides.

4. The guide device according to claim 3, It is characterized in that Each of the friction members comprises: A friction member body having an external thread, wherein the external thread of the friction member body cooperates with the internal thread of the first through hole, and the friction member body further comprises a torque receiving end; Friction end; and An elastic member between the friction member body and the friction end.

5. The guide device according to claim 4, It is characterized in that The outer end of the friction end is a spherical surface or a flat surface.

6. The guide device according to claim 2, It is characterized in that The contact area on the opposite surface of the guide pin that is in frictional contact with the friction member is coated with a friction material coating.

7. The guide device according to claim 1, It is characterized in that A groove is provided on the opposite surface of the guide pin, and during the swinging process of the swinging lever, the contact area where the friction member and the guide pin are in frictional contact is located in the groove.

8. The guide device according to claim 7, It is characterized in that The groove is configured to be in an arc shape that matches the trajectory of the friction member as the swinging rod swings.

9. The guide device according to claim 8, It is characterized in that The arc-shaped groove has a varying depth, wherein in the circumferential direction, the depth of the middle portion of the arc-shaped groove is greater than the depth of both ends of the arc-shaped groove, and the depth of the arc-shaped groove gradually decreases from the middle portion to both ends.

10. The guide device according to claim 1, It is characterized in that The bracket includes a base and one or more columns extending from the base, the first end of the swing arm is rotatably mounted to the base, and the guide pin is connected to the column substantially parallel to the base.

11. The guide device according to claim 10, It is characterized in that The guide pin includes a first end and a second end opposite to each other and a guide pin body between the first end and the second end, the first end of the guide pin is fixed to the column, and a spring is arranged between the second end of the guide pin and the swing lever.

12. The guide device according to claim 11, It is characterized in that The cross section of the first notch is rectangular, the cross section of the guide pin body is rectangular, and the first end and the second end of the guide pin have external threads.

13. The guide device according to claim 10, It is characterized in that The guide device also includes a limit pin, which is connected to the column in parallel with the guide pin, and the limit pin passes through the second through hole on the swing rod. The limit pin also includes a block that limits the maximum swing of the swing rod away from the guide rail.

14. The guide device according to claim 1, It is characterized in that The plurality of rollers include: a first roller and a second roller arranged side by side and a third roller whose rotation plane is perpendicular to the first roller and the second roller, and the first roller, the second roller and the third roller are all mounted to the bracket via the damping device.

15. An elevator system, wherein include: Elevator car; as well as A guide device according to any one of claims 1 to 14 connected to the elevator car to guide the elevator car to move along an elevator guide rail.

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