Buffering device for elevator car roof rushing
By designing a multi-stage buffering and magnet repulsive force elevator car top buffering device, the problem of impact being affected when the elevator car hits the top is solved, and the effect of effectively dispersing impact energy and reducing impact force is achieved, ensuring passenger safety.
Patent Information
- Application Number
- CN202510036439.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-03-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing elevator car will be subjected to a greater impact when it hits the top, causing serious deformation of the car and affecting passenger safety.
An elevator car top buffer device including a plurality of buffer components is designed. The buffer assembly consists of a rectangular slide rail, a movable plate, a spring, a top spring and a magnet, and plays a buffering role through step-by-step buffering and magnet repulsion force.
Through multi-stage buffering and magnet repulsion, the impact energy is effectively dispersed, the impact force received by the car is reduced, the buffering process is extended, the maximum impact force is reduced, the direct collision of metal components is avoided, noise and wear are reduced, and the safety of passengers in the car is ensured.
Smart Images
Figure CN119590954A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of elevator equipment, and in particular to a buffer device for a top impact of an elevator car. Background Art
[0002] A box elevator, also known as a vertical lift or elevator (hereinafter referred to as an elevator), is a common transportation device mainly used to transport passengers or goods between different floors in a building. It achieves the function of going up and down the stairs by moving a closed car in a vertical direction.
[0003] During the use of an elevator, there may be two more serious safety accidents: falling or hitting the top. When falling occurs, since there are safety clamps on the bottom plate of the elevator car, the safety clamps will hold the guide rails tightly when the car falls at high speed, thereby achieving the purpose of preventing the car from continuing to fall. However, when the elevator hits the top, the current anti-top buffer device will also cause the car to be subjected to a large impact when the car contacts the buffer device at high speed, causing serious deformation of the car and affecting the safety of the passengers in the car. Therefore, there is an urgent need for a buffer device for the top of the elevator car to reduce the impact on the elevator car when it hits the top, reduce the possibility of deformation of the car due to impact, and ensure the safety of the passengers in the car to the greatest extent. Summary of the invention
[0004] The present invention is intended to provide a buffer device for an elevator car to reduce the impact force when the car contacts the buffer device when the car hits the top.
[0005] To solve the above technical problems, the present invention provides the following technical solutions: a buffer device for an elevator car to hit the top, comprising a plurality of buffer assemblies, which are fixedly mounted on the top of the shaft wall of the elevator shaft and are located below the machine room; the buffer assembly comprises a rectangular slide rail fixed on the shaft wall of the elevator shaft, wherein two movable plates sliding in the vertical direction are slidably connected in the slide rail, the two movable plates are arranged in parallel, and are movable plate 1 and movable plate 2 from bottom to top, a plurality of vertical tension springs are fixed on the lower surface of the movable plate 1, and the bottom end of each tension spring is fixedly connected to the bottom of the slide rail, a plurality of top springs 1 are arranged between the movable plate 1 and the movable plate 2, the bottom end of the top spring 1 is fixedly connected to the movable plate 1, the top end of the top spring 1 is fixedly connected to the movable plate 2, and a plurality of vertical top springs 2 are fixedly connected to the upper surface of the movable plate 2, and the top end of the top spring 2 is fixedly connected to the top end of the slide rail; a contact plate arranged laterally is fixedly connected to the movable plate 1, and the contact plate is used to contact the car when the car hits the top.
[0006] Furthermore, the number of the buffer components is four, and the buffer components are opposite to each other in pairs.
[0007] Furthermore, the elastic coefficient of the tension spring is smaller than the elastic coefficient of the top spring 1, and the elastic coefficient of the top spring 1 is smaller than the elastic coefficient of the top spring 2.
[0008] Furthermore, the upper part of the side wall of each slide rail is fixedly connected to a transversely arranged top plate, the top plate is located directly above the contact plate, the lower surface of the top plate is fixedly connected to magnet one, the upper surface of the contact plate is fixedly connected to magnet two, and the same poles of magnet one and magnet two are directly opposite to each other.
[0009] Furthermore, the magnet one and the magnet two are both neodymium iron boron magnets.
[0010] Furthermore, a flexible rubber layer is fixedly connected to the lower surface of the contact plate.
[0011] Beneficial effects of the present invention:
[0012] 1. The tension spring, top spring 1 and top spring 2 with gradually increasing elastic coefficients form a multi-level buffer from low to high buffering force for the elevator car, which can effectively disperse the impact energy in multiple stages, greatly reducing the impact force on the elevator car when the elevator car contacts the buffer, and then gradually increasing the buffering force, so that the elevator car will not be deformed by a large impact force in an instant, and the safety of passengers in the car is guaranteed to the greatest extent.
[0013] 2. Based on the principle of repulsion between the same poles of NdFeB magnets, repulsion force is generated before the car approaches the top, which plays a role of initial deceleration. Then, as the distance between the two magnets gradually approaches, the repulsion force gradually increases, which also plays the role of step-by-step buffering. This not only prolongs the buffering process time and reduces the maximum impact force, but also avoids direct collision between metal parts, reducing noise and wear.
[0014] 3. Each buffer component is an independent unit, which is easy to check, adjust or replace separately. If a buffer component is damaged, only the corresponding module needs to be replaced, without large-scale disassembly of the entire system, which reduces maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of an embodiment of a buffer device for elevator car top impact of the present invention;
[0016] Figure 2 for Figure 1 The schematic diagram of the structure of the buffer component;
[0017] Figure 3 for Figure 2 Schematic diagram of the structure of the connection block. DETAILED DESCRIPTION
[0018] The following is further described in detail through specific implementation methods:
[0019] The figure marks in the drawings of the specification include: buffer assembly 1, slide rail 101, top spring 2 102, movable plate 2 103, top spring 1 104, movable plate 1 105, tension spring 106, connecting block 107, contact plate 108, magnet 2 109, magnet 1 110, top plate 111, groove 112, breaking pin 113.
[0020] The embodiment is basically as shown in the attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown:
[0021] A buffer device for a top impact of an elevator car comprises four buffer assemblies 1, which are fixedly mounted on the top of a shaft wall of an elevator shaft and located below a machine room, and the buffer assemblies 1 are opposite to each other in pairs, with a spacing between the buffer assemblies 1 for a traction rope to pass through.
[0022] The buffer assembly 1 includes a rectangular slide rail 101 fixed on the wall of the elevator shaft. Two movable plates sliding in the vertical direction are slidably connected in the slide rail 101. The two movable plates are arranged side by side, and are movable plate 105 and movable plate 2 103 from bottom to top. Three vertical tension springs 106 are fixed on the lower surface of movable plate 105. Three parallel connecting blocks 107 are welded at even intervals on the inner bottom of the slide rail 101. Each connecting block 107 is provided with a groove 112. Two groove walls facing each other are provided with transverse pin holes, and the two pin holes face each other. A broken pin is inserted in the pin hole. 113, the bottom end of each tension spring 106 is fixedly connected to a breaking pin 113, a plurality of top springs 104 are arranged between the movable plate 105 and the movable plate 2 103, the bottom end of the top spring 104 is fixedly connected to the movable plate 105, the top end of the top spring 104 is fixedly connected to the movable plate 2 103, a plurality of vertical top springs 2 102 are fixedly connected to the upper surface of the movable plate 2 103, the top end of the top spring 2 102 is fixedly connected to the top end of the slide rail 101; the elastic coefficient of the tension spring 106 is smaller than the elastic coefficient of the top spring 104, and the elastic coefficient of the top spring 104 is smaller than the elastic coefficient of the top spring 2 102. A horizontally arranged contact plate 108 is fixedly connected to the movable plate 105, the contact plate 108 is used to contact the car when the car hits the top, and a flexible rubber layer is fixedly connected to the lower surface of the contact plate 108. The upper part of the side wall of each slide rail 101 is fixedly connected to a transversely arranged top plate 111, and the top plate 111 is located directly above the contact plate 108. The lower surface of the top plate 111 is fixedly connected to a magnet 110 made of a neodymium iron boron magnet, and the upper surface of the contact plate 108 is fixedly connected to a magnet 2 109 made of a neodymium iron boron magnet, and the same poles of magnet 1 10 and magnet 2 109 are directly opposite to each other.
[0023] The specific implementation process is as follows:
[0024] When the elevator car hits the top, the top of the car first contacts the contact plate 108. Since the contact plate 108 is fixedly connected to the movable plate 105, when the car moves upward, the contact plate 108 pushes the movable plate 105 to slide vertically upward in the slide rail 101. When the movable plate 105 moves upward in the slide rail 101, the tension of the tension spring 106 slows down the speed at which the movable plate 105 slides upward, forming a primary buffer with a smaller buffer force, thereby avoiding excessive instantaneous impact force when the car contacts the contact plate 108. After the top spring 104 moves into the support range of the top spring 104, the elastic force of the top spring 102 is used to perform a secondary buffering with a moderate buffering force on the upward moving movable plate 105, thereby increasing the buffering force, and the buffering force of the top spring 104 and the tension spring 106 is superimposed. When the top spring 104 approaches the compression limit, the top spring 104 and the movable plate 2 103 move upward synchronously with the movable plate 105, and compress the top spring 102. At this time, the top spring 102 with the largest elastic force performs a third-level buffering on the moving movable plate 105 and the movable plate 2 103 through the elastic force. While performing the third-level buffering, the contact plate 108 gradually approaches the top plate 111. At this time, the contact plate 108 and the magnets 110 and 109 set on the top plate 111 generate a repulsive force because they are close to each other. As the distance between the contact plate 108 and the top plate 111 gradually shortens, the repulsive force also gradually increases, and then forms a superposition with the buffering force of the third-level buffering, further increasing the buffering force during the third-level buffering. When the moving distance of the movable plate 105 exceeds the tensile limit of the tension spring 106, in order to prevent the tension spring 106 from limiting the movement of the movable plate 105 and causing the car to be suddenly pulled and caused a momentary impact, the breaking pin 113 breaks when the tension of the tension spring 106 exceeds its bearing limit, allowing the bottom end of the tension spring 106 to detach, thereby preventing the car from being suddenly pulled and caused a momentary impact.
Claims
1. A buffer device for elevator car top impact, characterized in that: The invention comprises a plurality of buffer components, which are fixedly mounted on the top of the shaft wall of the elevator shaft and are located below the machine room; the buffer component comprises a rectangular slide rail fixed on the shaft wall of the elevator shaft, and two movable plates sliding in the vertical direction are slidably connected in the slide rail, and the two movable plates are arranged in parallel, namely movable plate one and movable plate two from bottom to top; a plurality of vertical tension springs are fixed on the lower surface of the movable plate one, and the bottom end of each tension spring is fixedly connected to the bottom of the slide rail; a plurality of top springs one are arranged between the movable plate one and the movable plate two, and the bottom end of the top spring one is fixedly connected to the movable plate one, and the top end of the top spring one is fixedly connected to the movable plate two, and a plurality of vertical top springs two are fixedly connected to the upper surface of the movable plate two, and the top end of the top spring two is fixedly connected to the top end of the slide rail; a contact plate arranged laterally is fixedly connected to the movable plate one, and the contact plate is used to contact the car when the car hits the top.
2. The buffer device for elevator car top impact according to claim 1, characterized in that: The number of the buffer components is four, and the buffer components are opposite to each other in pairs.
3. The buffer device for elevator car top impact according to claim 2, characterized in that: The elastic coefficient of the tension spring is smaller than the elastic coefficient of the top spring 1, and the elastic coefficient of the top spring 1 is smaller than the elastic coefficient of the top spring 2.
4. The buffer device for elevator car top impact according to claim 3, characterized in that: The upper part of the side wall of each slide rail is fixedly connected to a transversely arranged top plate, the top plate is located directly above the contact plate, the lower surface of the top plate is fixedly connected to magnet one, the upper surface of the contact plate is fixedly connected to magnet two, and the same poles of magnet one and magnet two are directly opposite to each other.
5. The buffer device for elevator car top impact according to claim 4, characterized in that: The magnet one and the magnet two are both neodymium iron boron magnets.
6. The buffer device for elevator car top impact according to claim 5, characterized in that: A flexible rubber layer is fixedly connected to the lower surface of the contact plate.