Elevator car roof wheel device
By adopting anti-hop and limit block structures in the elevator car headwheel device, the problem of traction rope jumping out or offset during elevator operation is solved, and the safety and service life of the elevator are improved.
Patent Information
- Application Number
- CN202510270678.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2025-05-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the elevator encounters abnormal situations such as emergency stop, top rushing and squatting during operation, the traction rope will easily jump out of the rope groove of the top wheel and deviate to other rope grooves, resulting in unstable operation of the elevator and posing a safety hazard.
An elevator car top wheel device is designed, adopting an anti-hop wheel and a limit block structure. The anti-hop wheel corresponds one by one to the rope groove. The traction rope runs between the anti-hop wheel and the rope groove. The limit block is used to restrict the movement of the traction rope and prevent it from jumping out or being offset.
Through the design of anti-hop wheels and limit blocks, the jump amplitude and deviation of the traction rope is effectively limited, reducing the possibility of the traction rope jumping out of the rope groove, and improving the safety and service life of the elevator.
Smart Images
Figure CN120057707A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of elevator equipment, and in particular to an elevator car top wheel device. Background Art
[0002] The elevator car top wheel device is an important part of the elevator system. Its main function is to change the direction of the hoisting rope during the operation of the elevator to ensure that the hoisting rope can correctly connect the car and the counterweight device, so as to achieve a smooth lifting motion.
[0003] However, when the elevator is running, in case of abnormal situations such as sudden stop, overshooting the top and bottoming out, a large inertial force will be generated, causing the hoisting rope to jump out of the rope groove of the car top wheel and shift to other rope grooves, which poses a safety hazard during the operation of the elevator and affects the overall performance and safety of the elevator. Summary of the Invention
[0004] In order to improve the problem that the hoisting rope jumps out of the rope groove and shifts to other rope grooves, this application provides an elevator car top wheel device.
[0005] An elevator car top wheel device provided by this application adopts the following technical solutions: An elevator car top wheel device includes an upper beam for connecting with an elevator car. A car top wheel is rotatably connected to the upper beam, and a plurality of rope grooves are provided on the car top wheel. The upper beam is connected with an anti-jumping device on one side of the car top wheel. The anti-jumping device includes a support frame connected to the upper beam. The support frame is connected with anti-jumping wheels, and the anti-jumping wheels correspond to the rope grooves one by one. The hoisting rope is located between the rope grooves and the anti-jumping wheels. The anti-jumping device further includes a limiting block arranged on the side of the anti-jumping wheel, and the limiting block is used to limit the movement of the hoisting rope.
[0006] By adopting the above technical solutions, the anti-jumping wheels can limit the jumping amplitude of the hoisting rope, reduce the possibility of the hoisting rope jumping out of the rope grooves. At the same time, when the hoisting rope contacts the anti-jumping wheels, the rolling friction between the anti-jumping wheels and the hoisting rope can reduce the wear on the surface of the hoisting rope and improve the service life of the hoisting rope. The limiting block can limit the movement of the hoisting rope and reduce the possibility of the hoisting rope moving to other rope grooves after jumping out of the rope grooves.
[0007] Optionally, a limiting groove is provided on the circumference of the anti-jumping wheel.
[0008] By adopting the above technical solutions, the limiting groove can guide the hoisting rope back to the correct direction facing the rope groove when the hoisting rope deflects in the direction of other rope grooves, further reducing the possibility of the hoisting rope deflecting.
[0009] Optionally, a first slide groove is connected below the support frame, a first slider is provided in the first slide groove, the anti-jump wheel is rotatably connected to the first slider, and the first slider is connected to the first slide groove via a first elastic member.
[0010] By adopting the above technical solution, the first elastic member can reduce the impact energy of the traction rope on the anti-jump wheel when the traction rope contacts the anti-jump wheel, thereby reducing the possibility of the anti-jump wheel being damaged. At the same time, the first elastic member can apply thrust to the traction rope, which helps the traction rope to reset.
[0011] Optionally, the first slide groove is connected to the second slide groove, a second slider is slidably connected in the second slide groove, the limit block is connected to the second slider, the first slider and the second slider are connected through a transmission member, and the first slider drives the second slider to move through the transmission member.
[0012] By adopting the above technical solution, the first slider is transmission-connected with the second slider, so that when the traction rope contacts the anti-jump wheel, the limit block can extend and limit the movement of the traction rope, thereby reducing the possibility of the traction rope contacting the limit block when the traction rope jumps slightly, and the limit block causing wear on the surface of the traction rope, thereby increasing the service life of the traction rope.
[0013] Optionally, the transmission member includes a transmission rod, and a first gear and a second gear are respectively provided at both ends of the transmission rod, a first rack is provided on the first slider, and a second rack is provided on the second slider, the first gear and the first rack are meshed for transmission, and the second gear and the second rack are meshed for transmission.
[0014] By adopting the above technical solution, when the first slider drives the first rack to move, the first rack uses the first gear, the transmission rod, the second gear and the second rack to realize the movement of the second slider, so that the limit block can extend to limit the traction rope after the traction rope contacts the anti-jump wheel.
[0015] Optionally, a plurality of balls are arranged on the side of the limit block close to the traction rope.
[0016] By adopting the above technical solution, when the traction rope contacts the limit block, the ball and the traction rope roll and rub against each other, which reduces the wear of the surface of the traction rope when the limit block limits the traction rope, thereby increasing the service life of the traction rope.
[0017] Optionally, a ball seat is slidably connected to the limit block, the ball is rollingly connected to the ball seat, and the ball seat is connected to the limit block via a second elastic member.
[0018] By adopting the above technical solution, when the second elastic member contacts the traction rope and the ball, the impact energy of the traction rope on the limit block is reduced, and the possibility of the limit block being damaged by the traction rope is reduced.
[0019] Optionally, the limit block is provided with an arc surface, and the arc surface gradually expands outward from the support frame towards the car top pulley.
[0020] By adopting the above technical solution, when the traction rope moves laterally and contacts the limit block, the arc surface can guide the traction rope to move towards the anti-jump pulley, further reducing the possibility of the traction rope jumping into other rope grooves.
[0021] Optionally, a car top pulley cover is arranged outside the car top pulley.
[0022] By adopting the above technical solution, the car top pulley cover can effectively protect the car top pulley and the traction rope in the rope groove from the influence of the external environment, effectively reduce the problems of foreign objects such as dust and sundries getting stuck or wearing the traction rope, and thus reduce the risk of the traction rope jumping out of the rope groove due to foreign objects.
[0023] Optionally, a shock-absorbing pad is arranged between the upper beam and the car top pulley.
[0024] By adopting the above technical solution, the shock-absorbing pad can effectively absorb and buffer the vibration and impact force generated during the operation of the elevator, reduce the influence of these external factors on the anti-jumping device, and improve the overall stability and reliability of the device.
[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The anti-jump pulley can limit the jumping amplitude of the traction rope, reduce the possibility of the traction rope jumping out of the rope groove. At the same time, when the traction rope contacts the anti-jump pulley, the rolling friction between the anti-jump pulley and the traction rope can reduce the wear on the surface of the traction rope and improve the service life of the traction rope. The limit block can limit the movement of the traction rope and reduce the possibility of the traction rope moving to other rope grooves after jumping out of the rope groove.
[0026] 2. The first elastic member can reduce the impact energy of the traction rope on the anti-jump pulley when the traction rope contacts the anti-jump pulley, and reduce the possibility of the anti-jump pulley being damaged. At the same time, the first elastic member can apply a thrust to the traction rope to help the traction rope reset.
[0027] 3. By the transmission connection between the first slider and the second slider, when the traction rope contacts the anti-jump pulley, the limit block can extend out and limit the movement of the traction rope, reducing the possibility of the limit block wearing the surface of the traction rope when the traction rope has a slight jump and contacting the limit block, and improving the service life of the traction rope. Description of the Drawings
[0028] Figure 1 It is a schematic diagram of the overall structure of an elevator car top wheel device of the present application; Figure 2 It is a schematic diagram of the installation positions of the upper beam and the anti-jumping device of an elevator car top wheel device of the present application; Figure 3 It is a schematic diagram of the installation positions of the anti-jumping-out device and the car top wheel of an elevator car top wheel device of the present application; Figure 4 It is a schematic diagram of the structure of the anti-jumping-out device of an elevator car top wheel device of the present application; Figure 5 It is a schematic diagram of the structure of the first slider, the transmission rod and the second slider of an elevator car top wheel device of the present application; Figure 6 It is a schematic diagram of the ball installation structure of an elevator car top wheel device of the present application.
[0029] In the figure, 1. Upper beam; 2. Car top wheel; 3. Anti-jumping-out device; 31. Anti-jumping wheel; 311. Limit groove; 32. Limit block; 33. First slider; 331. First rack; 34. First chute; 35. Second slider; 351. Second rack; 36. Second chute; 37. First elastic member; 38. Transmission rod; 381. First gear; 382. Second gear; 39. Support frame; 4. Ball; 5. Ball seat; 6. Second elastic member; 7. Shock pad; 8. Car top wheel cover. Specific embodiments
[0030] The following will further describe the present application in detail Figure 1 - Appendix Figure 6 to make a further detailed description of the present application.
[0031] The embodiment of the present application discloses an elevator car top wheel device. As Figure 1 and Figure 2 shown, the elevator car top wheel 2 device includes an upper beam 1, and the upper beam 1 is connected to the car frame connected to the upper part of the elevator car. Two upper beams 1 are connected to the car frame, the car top wheel 2 is located between the two upper beams 1, a shaft support is fixedly connected below the upper beam 1, and the rotating shaft of the car top wheel 2 is located in the shaft support, so that the car top wheel 2 is rotatably connected to the upper beam 1. An anti-jumping-out device 3 is fixedly connected between the two upper beams 1, and the anti-jumping-out device 3 is located on one side of the car top wheel 2. A rope groove is provided on the circumference of the car top wheel 2. In this embodiment, 3 rope grooves are provided, and each rope groove is wound with a traction rope.
[0032] As Figure 1 and Figure 2As shown, in this embodiment, a car top wheel cover 8 is fixedly connected to the upper beam 1 outside the car top wheel 2. The car top wheel cover 8 can effectively protect the car top wheel 2 and the traction rope in the rope groove from the influence of the external environment, effectively reducing the problem of foreign objects such as dust and sundries jamming or wearing the traction rope, thereby reducing the risk of the traction rope jumping out of the rope groove due to foreign objects.
[0033] As Figure 1 and Figure 2 shown, in this embodiment, a shock pad 7 is provided between the upper beam 1 and the car top wheel 2. The shock pad 7 is located between the rotating shaft of the car top wheel 2 and the upper beam 1. The shock pad 7 can effectively absorb and buffer the vibration and impact force generated during the operation of the elevator, reduce the influence of these external factors on the anti-jump-out device 3, and reduce the possibility of the traction rope jumping out of the rope groove.
[0034] As Figure 3 shown, the anti-jump-out device 3 includes a support frame 39 fixedly connected to the upper beam 1. The support frame 39 is located between two upper beams 1 and is fixedly connected to the upper beam 1. An anti-jump wheel 31 is connected to the support frame 39. The number and position of the anti-jump wheels 31 correspond one-to-one to the number and position of the rope grooves of the car top wheel 2. The traction rope is located between the anti-jump wheel 31 and the rope groove of the car top wheel 2, so that each traction rope can be individually restricted by the anti-jump wheel 31. As Figure 4 shown, a limiting groove 311 is provided on the circumference of the anti-jump wheel 31. The limiting groove 311 can guide the traction rope back to the correct facing direction of the rope groove when the traction rope deflects towards the direction of other rope grooves, further reducing the possibility of the traction rope deflecting.
[0035] In the anti-jump-out device of the related art, all traction ropes are blocked by setting an integral blocking member. However, when the kinetic energy of one traction rope is too large and damages the blocking member, the entire blocking member loses its function, thereby affecting the restriction of other traction ropes. In the present invention, each traction rope is individually restricted. When one anti-jump wheel 31 is damaged, it will not affect the anti-jump-out function of the anti-jump-out device for other traction ropes, improving the overall reliability and stability of the present invention and enhancing the safety of the elevator.
[0036] Furthermore, as Figure 4 and Figure 5 shown, a first chute 34 is fixedly connected to the lower part of the support frame 39. The two first chutes 34 are respectively located on both sides of the anti-jump wheel 31. A first slider 33 is slidably connected in the first chute 34. The anti-jump wheel 31 is rotatably connected to the first slider 33 through a rotating shaft. When the traction rope contacts the anti-jump wheel 31, the anti-jump wheel 31 rolls friction with the traction rope, reducing the wear of the anti-jump wheel 31 on the surface of the traction rope and improving the service life of the traction rope.
[0037] In addition, as Figure 4As shown, first elastic members 37 are fixedly connected to both sides of the first slider 33, one end of the first elastic member 37 is fixedly connected to the first slider 33, and the other end is fixedly connected to the inner wall of the first slide groove 34. Preferably, the first elastic member 37 is a spring. When the traction rope contacts the anti-jump wheel 31, the first elastic member 37 can reduce the impact energy of the traction rope on the anti-jump wheel 31, thereby reducing the possibility of the anti-jump wheel 31 being damaged. At the same time, the first elastic member 37 can apply thrust to the traction rope, which helps the traction rope to reset.
[0038] Furthermore, if Figure 4 and Figure 5 As shown, a second slide groove 36 is fixedly connected below the first slide groove 34, and a second slider 35 is slidably connected in the second slide groove 36. A first rack 331 is fixedly connected to the first slider 33, and a second rack 351 is fixedly connected to the second slider 35. The first rack 331 and the second rack 351 are connected by a transmission rod 38. The first gear 381 and the second gear 382 are fixedly connected at both ends of the transmission rod 38, respectively. The first gear 381 meshes with the first rack 331, and the second gear 382 meshes with the second rack 351. A limiting block 32 is fixedly connected to one end of the second slider 35 close to the traction rope. The limiting block 32 can limit the traction rope from moving to both sides, reducing the possibility of the traction rope moving toward other rope grooves. When the traction rope contacts the anti-jump wheel 31, the anti-jump wheel 31 drives the first slider 33 to move, and the first slider 33 drives the first rack 331 to move. The first rack 331 uses the first gear 381, the transmission rod 38, the second gear 382 and the second rack 351 to realize the movement of the second slider 35, so that the limit block 32 can extend to limit the traction rope after the traction rope contacts the anti-jump wheel 31.
[0039] Since the traction rope may be at risk of jumping out of the rope groove only when it contacts the anti-jump wheel 31, compared with the anti-jump device in the prior art, the limit blocks 32 are fixed on both sides of the traction rope, and when the traction rope slightly jumps and does not contact the anti-jump wheel 31, it is easy to contact the limit blocks 32, which increases the possibility of the limit blocks 32 wearing the surface of the traction rope and shortens the service life of the traction rope. The limit blocks 32 are driven to move by the movement of the anti-jump wheel 31, so that when the traction rope contacts the anti-jump wheel 31, the limit blocks 32 extend and limit the deviation of the traction rope, which reduces the possibility of the traction rope being worn and increases the service life of the traction rope.
[0040] In addition, if Figure 5 As shown, in this embodiment, an arc surface is provided on the side of the limit block 32 close to the traction rope, and the arc surface gradually expands outward from the anti-jump wheel 31 toward the car top wheel 2. When the traction rope moves laterally and contacts the limit block 32, the arc surface can guide the traction rope to move toward the anti-jump wheel 31, further reducing the possibility of the traction rope jumping to other rope grooves.
[0041] As Figure 6 shown, a ball seat 5 is slidably connected to the limit block 32. The ball seat 5 is connected to the limit block 32 through a second elastic member 6, and the ball 4 is rotatably connected to the ball seat 5. Preferably, the second elastic member 6 is a spring. When the traction rope contacts the ball 4, the second elastic member 6 reduces the impact energy of the traction rope on the limit block 32, reducing the possibility of the limit block 32 being damaged by the traction rope. At the same time, when the traction rope contacts the limit block 32, the ball 4 can cause rolling friction between the traction rope and the limit block 32, further reducing the possibility of the traction rope being worn.
[0042] The implementation principle of an elevator car top wheel device according to an embodiment of the present application is as follows: When the traction rope jumps, the traction rope contacts the anti-jump wheel 31. The anti-jump wheel 31 can limit the jumping amplitude of the traction rope, reducing the possibility of the traction rope jumping out of the rope groove. At the same time, when the anti-jump wheel 31 contacts the traction rope, the anti-jump wheel 31 moves to drive a pair of limit blocks 32 to extend out, so that the traction rope is located between the two limit blocks 32, restricting the movement of the traction rope to other rope grooves, further reducing the possibility of the traction rope jumping to other rope grooves, and improving the safety of the elevator.
[0043] The embodiments of the present specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. An elevator car top wheel device, characterized in that: The invention comprises an upper beam (1) for connecting to an elevator car, wherein a car top wheel (2) is rotatably connected to the upper beam (1), and a plurality of rope grooves are arranged on the car top wheel (2); the upper beam (1) is connected to an anti-jumping device (3) on one side of the car top wheel (2), and the anti-jumping device (3) comprises a support frame (39) connected to the upper beam (1), and the support frame (39) is connected to an anti-jumping wheel (31), and the anti-jumping wheel (31) corresponds to the rope groove one by one, and the traction rope is located between the rope groove and the anti-jumping wheel (31); the anti-jumping device (3) also comprises a limit block (32) arranged on the side of the anti-jumping wheel (31), and the limit block (32) is used to limit the movement of the traction rope.
2. An elevator car top wheel device according to claim 1, characterized in that: The anti-jump wheel (31) is provided with a limiting groove (311) on its circumference.
3. An elevator car top wheel device according to claim 1, characterized in that: A first slide groove (34) is connected below the support frame (39), a first slider (33) is provided in the first slide groove (34), the anti-jump wheel (31) is rotatably connected to the first slider (33), and the first slider (33) is connected to the first slide groove (34) via a first elastic member (37).
4. An elevator car top wheel device according to claim 3, characterized in that: The first slide groove (34) is connected to a second slide groove (36), a second slider (35) is slidably connected in the second slide groove (36), the limit block (32) is connected to the second slider (35), the first slider (33) and the second slider (35) are transmission-connected via a transmission member, and the first slider (33) drives the second slider (35) to move via the transmission member.
5. An elevator car top wheel device according to claim 4, characterized in that: The transmission member comprises a transmission rod (38), a first gear (381) and a second gear (382) are respectively provided at both ends of the transmission rod (38), a first rack (331) is provided on the first slider (33), a second rack (351) is provided on the second slider (35), the first gear (381) and the first rack (331) are meshed for transmission, and the second gear (382) and the second rack (351) are meshed for transmission.
6. An elevator car top wheel device according to claim 1, characterized in that: A plurality of balls (4) are arranged on the side of the limit block (32) close to the traction rope.
7. An elevator car top wheel device according to claim 6, characterized in that: A ball seat (5) is slidably connected to the limit block (32), the ball (4) is rollingly connected to the ball seat (5), and the ball seat (5) is connected to the limit block (32) via a second elastic member (6).
8. An elevator car top wheel device according to claim 1, characterized in that: The limit block (32) is provided with an arc surface, and the arc surface gradually expands outward from the anti-jump wheel (31) toward the car top wheel (2).
9. An elevator car top wheel device according to claim 1, characterized in that: A car top wheel cover (8) is arranged on the outer side of the car top wheel (2).
10. An elevator car top wheel device according to claim 1, characterized in that: A shock-absorbing pad (7) is provided between the upper beam (1) and the car top wheel (2).