Vibration damper of elevator rope
By designing vibration-absorbing devices including rope head plates, steel cables, return springs and buffer units in the elevator rope, the loss problem caused by steel cable stretching during the elevator start or stop is solved, and the double buffering effect of steel cables is achieved, extending the service life of the equipment.
Patent Information
- Application Number
- CN202520599281.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2035-04-01
AI Technical Summary
When existing elevators start or stop, the cable is stretched due to their own weight, which in turn aggravates the loss of steel cables and shortens the service life of the equipment.
Design a vibration damping device for elevator ropes, including a rope head plate, steel cable, return spring and buffer unit. The buffering unit is composed of an elastic cylinder, a pneumatic clamp, a telescopic rod, etc. It provides a double buffering effect through the clamping of the pneumatic clamp and the restoration elasticity of the telescopic rod.
It effectively reduces the loss of steel cables when the elevator starts and stops, extends the service life of the equipment, and improves riding comfort.
Smart Images
Figure CN222860889U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of elevator rope vibration reduction, in particular to a vibration reduction device for an elevator rope. Background Art
[0002] An elevator is a permanent transportation device that serves several specific floors in a building and whose car runs on at least two rows of rigid tracks that are perpendicular to the horizontal plane or have an inclination angle of less than 15° to the plumb line. Modern elevators are mainly composed of traction machines, guide rails, counterweight devices, safety devices, signal control systems, cars and hall doors, etc. These parts are installed in the shaft and machine room of the building respectively. Wire rope friction transmission is usually used. The wire rope is passed around the traction sheave, and the two ends are respectively connected to the car and the counterweight. The electric motor drives the traction sheave to raise and lower the car. Elevators require safety and reliability, high transportation efficiency, accurate leveling and comfortable riding, etc. The elevator rope head is an indispensable accessory in the elevator.
[0003] At present, vibration reduction of elevator rope ends is a key part of reducing vibrations caused by elevator stops. At present, ordinary elevators do not fully apply shock-absorbing devices, especially when the elevator is started or stopped. Due to the weight of the elevator, the steel cable is more likely to stretch, which will aggravate the loss of the steel cable during long-term use and reduce the service life of the equipment.
[0004] Therefore, the utility model provides a vibration reduction device for elevator ropes. Utility Model Content
[0005] The purpose of the utility model is to provide a vibration reduction device for an elevator rope to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solution: a vibration reduction device for an elevator rope, comprising a rope head plate, a steel cable is arranged inside the rope head plate, a return spring is arranged outside the steel cable, a fixing plate is arranged at the bottom end of the return spring, a buffer unit for pulling the return spring downward is arranged below the fixing plate, and the buffer unit is used to reduce the vibration when the steel cable is stretched.
[0006] Preferably, the buffer unit includes an elastic tube located below the fixed plate, a pneumatic clamp is provided on the outer wall of the elastic tube, a square frame is provided on the outer wall of the pneumatic clamp, a connecting plate is provided below the pneumatic clamp, a telescopic rod is provided below the connecting plate, the bottom of the telescopic rod is fixedly connected to the square frame, and the pneumatic clamp is electrically connected to the start and stop controller of the elevator.
[0007] Preferably, a sliding cylinder is provided below the elastic cylinder, a fixed cylinder is provided on the outer wall of the sliding cylinder, the outer wall of the fixed cylinder is fixedly connected to the square frame, a sliding plate is provided at the bottom end of the sliding cylinder, a through hole is provided on the wall of the sliding plate, and the interior of the fixed cylinder is filled with liquid oil.
[0008] Preferably, the telescopic rod has a self-restoring capability.
[0009] Preferably, the upper and lower ends of the elastic cylinder are fixedly connected to the fixing plate and the sliding cylinder respectively.
[0010] Preferably, when the pneumatic clamp is in a clamping state, the elastic tube and the fixing plate move downward together with the steel cable.
[0011] The utility model has at least the following beneficial effects:
[0012] In the utility model, when the elevator is pre-started or pre-parked, the pneumatic clamp will drive the two clamping claws to clamp the elastic tube, thereby causing the inner wall of the elastic tube and the steel cable to generate an extrusion force, and the steel cable will drive the elastic tube and the fixing plate to descend together, and the spring will be stretched downward. At the same time, the pneumatic clamp will also drive the connecting plate to squeeze the telescopic rod. The restoring elasticity of the telescopic rod and the elasticity of the reset spring cooperate with each other, which has a double buffering effect on the tensile property of the steel cable, and effectively reduces the loss of the steel cable when the elevator starts and stops, which is beneficial to extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is a cross-sectional view of the square frame structure of the utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the pneumatic clamp of the utility model;
[0016] Figure 4 It is a sectional view of the overall structure of the utility model.
[0017] In the figure: 1-rope head plate; 2-steel cable; 3-reset spring; 4-fixing plate; 5-buffer unit; 6-elastic cylinder; 7-pneumatic clamp; 8-square frame; 9-connecting plate; 10-telescopic rod; 11-sliding cylinder; 12-fixing cylinder; 13-sliding plate; 14-through hole. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-4 The utility model provides a technical solution: a vibration reduction device for an elevator rope, comprising:
[0020] A rope head plate 1 is provided with a steel cable 2 inside the rope head plate 1. The steel cable 2 slides freely inside the rope head plate 1 and is used to lift the elevator car. A reset spring 3 is provided outside the steel cable 2. A fixing plate 4 is provided at the bottom end of the reset spring 3. The steel cable 2 slides freely inside the fixing plate 4. The two ends of the reset spring 3 are respectively fixedly connected to the fixing plate 4 and the rope head plate 1. A buffer unit 5 for stretching the reset spring 3 downward is provided below the fixing plate 4. The buffer unit 5 is used to reduce the vibration of the steel cable 2 when it is stretched, thereby reducing the loss of the steel cable 2 when the elevator starts and stops, and further extending the service life of the device.
[0021] The buffer unit 5 includes an elastic tube 6 located below the fixed plate 4, and a pneumatic clamp 7 is provided on the outer wall of the elastic tube 6 (the pneumatic clamp 7 here is the prior art, and when working, the pump body simultaneously supplies air to the end slide grooves of the two clamps, thereby driving the two clamps to squeeze each other at the same time), and a square frame 8 is provided on the outer wall of the pneumatic clamp 7 and is connected to it by sliding up and down, and the top of the square frame 8 is fixedly connected to the rope head plate 1, and a connecting plate 9 is provided below the pneumatic clamp 7 and is fixedly connected thereto, and a telescopic rod 10 is provided below the connecting plate 9 and is fixedly connected thereto, and the bottom of the telescopic rod 10 is fixedly connected to the square frame 8, and the telescopic rod 10 has the ability of self-recovery, and the pneumatic clamp 7 is electrically connected to the start and stop controller of the elevator. When the pneumatic clamp 7 is in the clamping state, the elastic tube 6 and the fixed plate 4 move downward together with the steel cable 2, and the reset spring 3 is stretched downward a short distance, which plays a certain buffering role for the stretching of the steel cable 2;
[0022] During use, when the elevator is pre-started or pre-parked, the pneumatic clamp 7 will receive a self-starting signal sent by the controller (the clamping time of the pneumatic clamp 7 is short, and within three seconds after the elevator starts running again, its clamping effect will be closed again to ensure the normal operation of the elevator), and then drive the two claws to clamp the elastic tube 6, so that the inner wall of the elastic tube 6 and the steel cable 2 generate an extrusion pressure. Under the action of the extrusion pressure, the steel cable 2 will drive the elastic tube 6 and the fixing plate 4 to descend together, and the spring will be stretched downward. At the same time, the pneumatic clamp 7 will also move downward and drive the connecting plate 9 to squeeze the telescopic rod 10. The restoring elasticity of the telescopic rod 10 and the elasticity of the reset spring 3 cooperate with each other, which has a double buffering effect on the tensile strength of the steel cable 2, and effectively reduces the loss of the steel cable 2 when the elevator starts and stops, which is beneficial to extending the service life of the equipment.
[0023] Furthermore, a slide cylinder 11 is provided below the elastic cylinder 6, and the upper and lower ends of the elastic cylinder 6 are fixedly connected to the fixed plate 4 and the slide cylinder 11 respectively. The steel cable 2 can slide freely inside the elastic cylinder 6 and the slide cylinder 11. The outer wall of the slide cylinder 11 is provided with a fixed cylinder 12 and is slidably connected to it. The outer wall of the fixed cylinder 12 is fixedly connected to the square frame 8. A slide plate 13 is provided at the bottom end of the slide cylinder 11 and is fixedly connected to it. The slide plate 13 is located on the inner wall of the fixed cylinder 12 and is slidably connected to it. The wall body of the slide plate 13 is provided with a through hole 14, and the interior of the fixed cylinder 12 is filled with liquid oil.
[0024] When the elastic cylinder 6 descends, it will drive the slide cylinder 11 to slide inside the fixed cylinder 12, and the slide plate 13 will also slide accordingly. In this process, the downward displacement of the slide plate 13 will cause the oil at the bottom end of the fixed cylinder 12 to flow from the through hole 14 to the other side of the slide plate 13. The liquid fluidity of the oil can effectively buffer the stretching of the steel cable 2. At the same time, when the return spring 3 drives the slide cylinder 11 and the elastic cylinder 6 to reset, it can also provide a buffer for the restoring elastic force of the return spring 3, thereby ensuring that the steel cable 2 has a more stable vibration reduction effect and providing a better riding experience for the passengers of the elevator.
[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A vibration reduction device for an elevator rope, comprising a rope end plate (1), wherein a steel cable (2) is arranged inside the rope end plate (1), characterized in that: A return spring (3) is provided on the outside of the steel cable (2), a fixing plate (4) is provided at the bottom end of the return spring (3), and a buffer unit (5) for pulling the return spring (3) downward is provided below the fixing plate (4), and the buffer unit (5) is used to reduce vibration of the steel cable (2) when it is stretched.
2. The vibration reduction device for elevator ropes according to claim 1, characterized in that: The buffer unit (5) comprises an elastic tube (6) located below the fixing plate (4); a pneumatic clamp (7) is provided on the outer wall of the elastic tube (6); a square frame (8) is provided on the outer wall of the pneumatic clamp (7); a connecting plate (9) is provided below the pneumatic clamp (7); a telescopic rod (10) is provided below the connecting plate (9); the bottom of the telescopic rod (10) is fixedly connected to the square frame (8); and the pneumatic clamp (7) is electrically connected to the start / stop controller of the elevator.
3. The vibration reduction device for elevator ropes according to claim 2, characterized in that: A sliding cylinder (11) is provided below the elastic cylinder (6), a fixed cylinder (12) is provided on the outer wall of the sliding cylinder (11), the outer wall of the fixed cylinder (12) is fixedly connected to the square frame (8), a sliding plate (13) is provided at the bottom end of the sliding cylinder (11), a through hole (14) is provided on the wall of the sliding plate (13), and the interior of the fixed cylinder (12) is filled with liquid oil.
4. The vibration reduction device for elevator ropes according to claim 2, characterized in that: The telescopic rod (10) has the ability of self-restoration.
5. The vibration reduction device for elevator ropes according to claim 3, characterized in that: The upper and lower ends of the elastic cylinder (6) are fixedly connected to the fixing plate (4) and the sliding cylinder (11) respectively.
6. The vibration reduction device for elevator ropes according to claim 2, characterized in that: When the pneumatic clamp (7) is in a clamping state, the elastic tube (6) and the fixing plate (4) move downward together with the steel cable (2).