Buffer device for elevator car

Abstract

The invention relates to the technical field of elevator buffering equipment, in particular to a buffering device for an elevator car. According to the technical scheme, the elevator car comprises a guide rail, a bottom plate is fixedly connected to the bottom of the guide rail, a sliding frame is arranged on one side of the guide rail in a sliding mode, and a car body is fixedly connected to one side of the sliding frame. The first spring at the bottom of the buffer rod and the second spring at the top of the buffer rod can be extruded at the same time, the impact force of falling of the car body is counteracted through energy storage of the first spring and the second spring, and when the buffer rod moves downwards, the blocking assembly can be triggered to operate, so that recoil after energy storage of the first spring and the second spring can be effectively prevented; secondary injury to passengers is relieved, and the problem that secondary injury is caused to the passengers due to the fact that the buffer jacks up the lift car after energy storage is solved.

Description

Technical Field

[0001] This invention relates to the field of elevator buffer equipment technology, and more particularly to a buffer device for elevator cars. Background Technology

[0002] An elevator car's buffer device is a device installed at the bottom of the elevator shaft to reduce the impact force of a sudden fall of the elevator car. Buffer devices include energy storage buffers and hydraulic buffers, among which energy storage buffers are also known as spring buffers. They are devices that use the energy storage properties of springs to reduce the impact of the elevator car falling.

[0003] In the prior art, when the car moves downward and triggers the spring buffer, the weight of the car will push the spring buffer downward and compress the spring. The impact of the car moving downward is offset by the contraction of the spring. However, after the spring is compressed and stores energy, it will push the car upward. When the car is pushed upward, it is easy for the passengers inside to suffer secondary injuries. Therefore, this application proposes a buffer device for elevator cars. Summary of the Invention

[0004] The purpose of this invention is to address the problem in the prior art where the buffer stores energy and lifts the elevator car, causing secondary injury to passengers, and to propose a buffer device for elevator cars.

[0005] The technical solution of the present invention: A buffer device for an elevator car includes a guide rail, a base plate fixedly connected to the bottom of the guide rail, a sliding frame slidably arranged on one side of the guide rail, and a car body fixedly connected to one side of the sliding frame. Two sets of the guide rail and sliding frame are provided, symmetrically distributed on both sides of the car body. A cylinder is fixedly connected to the top of the base plate, a first spring is fixedly connected to the inner wall of the cylinder, a buffer rod is fixedly connected to the top of the first spring, a second spring is fixedly connected to one side of the top of the buffer rod, and the bottom of the second spring is fixedly connected to the top of the cylinder. The device also includes a blocking component for mitigating the impact of spring energy storage. The blocking component is located on one side of the base plate. A sealing component for protecting the first and second springs is provided at the top of the cylinder. The sealing component includes a sleeve fixedly connected to the top of the buffer rod, and a control component for preventing corrosion of the first and second springs is provided on one side of the sleeve.

[0006] Optionally, the blocking assembly includes a side plate fixed to one side of the base plate. A support rod is fixed to the top of the side plate. One side of the support rod has a first mounting frame, and the other side of the support rod has a second mounting frame. A circular sleeve is fixed to the top of the support rod. A central rod is rotatably connected to the inner wall of the circular sleeve. Both ends of the central rod extend into the interiors of the first and second mounting frames, respectively. A gear is fixed to one end of the central rod and is located inside the first mounting frame. A rack is fixed to the top of the buffer rod and is inserted into the interior of the first mounting frame. The rack meshes with one side of the gear. A ratchet is fixed to the other end of the central rod and is located inside the second mounting frame. A locking structure is provided inside the second mounting frame. The locking structure includes ratchet teeth that engage with the top of the ratchet teeth.

[0007] Optionally, the locking structure further includes a vertical plate, which is fixed to the top of the side plate. A first hydraulic rod is fixed to the top of one side of the vertical plate. An installation block is fixed to the output end of the first hydraulic rod. The installation block is disposed inside the second mounting frame, and the ratchet is disposed on the inner wall of the installation block.

[0008] Optionally, a baffle is fixed to the outer wall of the central rod. Two sets of baffles are provided and are distributed in parallel on the outer wall of the central rod. The baffles are circular in shape, and the two sets of baffles are provided on both sides of the circular sleeve.

[0009] Optionally, the closure assembly further includes a slider, which is fixed to the bottom of the sleeve. The outer wall of the cylinder has a groove, and the slider is slidably disposed inside the groove.

[0010] Optionally, a first sealing gasket is fixed to the bottom of the inner wall of the sleeve, and a second sealing gasket is fixed to the top of the outer wall of the cylinder. The shape of the first sealing gasket matches the shape of the second sealing gasket, and both the first sealing gasket and the second sealing gasket are made of rubber.

[0011] Optionally, the control component includes a frame fixed to the outer wall of the sleeve. The outer wall of the sleeve has an installation groove, and a placement frame is inserted into the inner wall of the installation groove. The placement frame is filled with dehumidifier. An arc-shaped piece is fixed to one side of the placement frame. An elongated groove communicating with the inner wall of the placement frame is opened on one side of the arc-shaped piece. A pull block is fixed to one side of the arc-shaped piece. An opening of the same size as the arc-shaped piece is opened on one side of the frame.

[0012] Optionally, the control component further includes a humidity detector, which is fixedly connected to one side of the sleeve. A circular hole is provided on one side of the sleeve. A probe is fixedly connected to one side of the humidity detector and extends into the circular hole. A second hydraulic rod is fixedly connected to the bottom of the humidity detector. A sealing plate is fixedly connected to the output end of the second hydraulic rod. The sealing plate is inserted into the inner wall of the frame and is located on one side of the arc-shaped piece.

[0013] Optionally, a circular plate is fixedly connected to the bottom of the car body, and an airbag is fixedly connected to the bottom of the circular plate.

[0014] Optionally, a top plate is fixed to the top of the buffer rod. The top plate is circular in shape, and a receiving plate is fixed to the top of the top plate. The top of the receiving plate is arc-shaped, and the receiving plate is located at the bottom of the airbag.

[0015] Compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] This invention, by setting up a blocking component, can compress the buffer rod downwards when the car body falls, simultaneously compressing the first spring at the bottom and the second spring at the top of the buffer rod. The energy stored in the first and second springs can offset the impact force of the car body falling. When the buffer rod moves downwards, the blocking component can be activated, thereby effectively preventing the first and second springs from rebounding after storing energy, reducing secondary injuries to passengers, and solving the problem of secondary injuries to passengers caused by the buffer lifting the car after storing energy.

[0017] During routine maintenance of the buffer, by setting up a sealing component, the sleeve can protect the exterior of the first and second springs, preventing debris in the elevator shaft from getting stuck inside the first or second springs and causing them to malfunction. By setting up a control component, the humidity inside the sleeve and cylinder can be controlled, thereby keeping the first and second springs in a dry environment and preventing the humid environment in the elevator shaft from causing the first and second springs to rust. Attached Figure Description

[0018] Figure 1 A schematic diagram of one side structure of a buffer device for an elevator car;

[0019] Figure 2 A schematic diagram of the other side of the overall structure of a buffer device for an elevator car;

[0020] Figure 3 A schematic diagram of a cylindrical cross-sectional structure of a buffer device for an elevator car;

[0021] Figure 4 for Figure 3 An enlarged structural diagram at point A;

[0022] Figure 5 for Figure 3 An enlarged structural diagram at point B;

[0023] Figure 6 A schematic diagram of the blocking component structure of a buffer device for an elevator car;

[0024] Figure 7 A schematic cross-sectional view of the first and second mounting frames of a buffer device for an elevator car.

[0025] Figure 8 A schematic diagram of a cylindrical and sleeve structure for a buffer device used in an elevator car;

[0026] Figure 9 This is a schematic diagram of the disassembled structure of a buffer device for an elevator car.

[0027] Reference numerals: 1. Guide rail; 2. Base plate; 3. Sliding frame; 4. Car body; 5. Cylinder; 6. First spring; 7. Buffer rod; 8. Second spring; 9. Side plate; 10. Support rod; 11. First mounting frame; 12. Second mounting frame; 13. Rack; 14. Center rod; 15. Gear; 16. Ratchet; 17. Mounting block; 18. Ratchet; 19. Vertical plate; 20. First hydraulic rod; 21. Baffle plate; 22. Sleeve; 23. Slide groove; 24. Slider; 25. First sealing pad; 26. Second sealing pad; 27. Placement frame; 28. Arc-shaped piece; 29. ​​Pull block; 30. Clip frame; 31. Humidity detector; 32. Probe; 33. Second hydraulic rod; 34. Sealing plate; 35. Circular plate; 36. Airbag; 37. Top plate; 38. Receiving plate. Detailed Implementation

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention proposes a buffer device for an elevator car, including a guide rail 1, a base plate 2 fixedly connected to the bottom of the guide rail 1, a sliding frame 3 slidably arranged on one side of the guide rail 1, the sliding frame 3 and the guide rail 1 cooperating to play a limiting role, a car body 4 fixedly connected to one side of the sliding frame 3, two sets of both the guide rail 1 and the sliding frame 3 are provided and symmetrically distributed on both sides of the car body 4, a cylinder 5 fixedly connected to the top of the base plate 2, a first spring 6 fixedly connected to the inner wall of the cylinder 5, a buffer rod 7 fixedly connected to the top of the first spring 6, the first spring 6 is used to provide the buffer rod 7 with the function of contraction and energy storage, a second spring 8 fixedly connected to one side of the top of the buffer rod 7, the bottom of the second spring 8 fixedly connected to the top of the cylinder 5, the second spring 8 can improve the energy storage effect of the buffer rod 7.

[0030] In this embodiment, as Figure 6 and Figure 7 As shown, the elevator car buffer device also includes a blocking assembly for mitigating the impact of spring energy storage. The blocking assembly is disposed on one side of the base plate 2 and includes a side plate 9, which is fixedly connected to one side of the base plate 2. A support rod 10 is fixedly connected to the top of the side plate 9. One side of the support rod 10 has a first mounting frame 11, and the other side of the support rod 10 is fixedly connected to a second mounting frame 12. A circular sleeve is fixedly connected to the top of the support rod 10. A central rod 14 is rotatably connected to the inner wall of the circular sleeve. By setting the circular sleeve, the central rod 14 can be supported. A baffle 21 is fixedly connected to the outer wall of the central rod 14. Two sets of baffles 21 are provided and are distributed in parallel on the central rod 14. The outer wall of the core rod 14 has circular baffles 21. Two sets of baffles 21 are arranged on both sides of the circular sleeve. By setting two sets of baffles 21 on the outer wall of the core rod 14, the position of the core rod 14 can be limited when the gear 15 drives the core rod 14 to rotate, thus preventing the core rod 14 from shifting during rotation. The two ends of the core rod 14 extend into the interior of the first mounting frame 11 and the second mounting frame 12, respectively. One end of the core rod 14 is fixedly connected to the gear 15, which is located inside the first mounting frame 11. The top end of the buffer rod 7 is fixedly connected to a rack 13, which is inserted into... Inside the first mounting frame 11, rack 13 meshes with one side of gear 15. When the car body 4 moves downward, it impacts the buffer rod 7, pushing it downward. As the buffer rod 7 moves downward, it drives rack 13 downward. When rack 13 slides within the first mounting frame 11, it drives the gear 15 meshing on one side to rotate counterclockwise. When gear 15 rotates, it drives center rod 14 to rotate. The other end of center rod 14 is fixedly connected to ratchet 16. As center rod 14 rotates counterclockwise, it drives ratchet 16 to rotate counterclockwise. The counterclockwise rotating ratchet 16 passes through ratchet teeth 18. The second mounting frame 12 is equipped with a locking structure, which includes a ratchet 18 that engages with the top of the ratchet 16. By setting the locking structure, the ratchet 18 can be positioned at the top of the ratchet 16. When the first spring 6 and the second spring 8 are pushed upwards after storing energy, the ratchet 18 and the ratchet 16 can lock the center rod 14 and the gear 15. After the gear 15 is locked, it will lock the rack 13 and the buffer rod 7, thereby preventing the impact force released by the first spring 6 and the second spring 8 after storing energy from causing secondary injury to the passengers inside the car body 4.

[0031] In this process, such as Figure 6 and Figure 7As shown, the locking structure of the elevator car buffer device also includes a vertical plate 19, which is fixed to the top of the side plate 9. A first hydraulic rod 20 is fixed to the top of one side of the vertical plate 19. An installation block 17 is fixed to the output end of the first hydraulic rod 20. The installation block 17 is located inside the second mounting frame 12. A ratchet 18 is located on the inner wall of the installation block 17. In normal conditions, the first hydraulic rod 20 will push the installation block 17 and the ratchet 18 to one side, so that the ratchet 18 is held on the ratchet 16, so that the ratchet 16 can only rotate counterclockwise. After the car body 4 falls, passengers need to be rescued in time. After the passengers are rescued and it is safe, the second hydraulic rod 33 can be retracted to move the installation block 17 and the ratchet 18 away from one side of the ratchet 16, thereby releasing the lock on the first spring 6 and the second spring 8. When disassembling the buffer, the stored energy in the first spring 6 and the second spring 8 is released to prevent safety hazards during subsequent disassembly.

[0032] It should be noted that, as Figure 3 and Figure 5 As shown, the top of the cylinder 5 is provided with a sealing assembly for protecting the first spring 6 and the second spring 8. The sealing assembly includes a sleeve 22, which is fixedly connected to the top of the buffer rod 7. By providing the sleeve 22, the outer walls of the first spring 6 and the second spring 8 can be protected, preventing debris falling into the elevator shaft from getting stuck in the first spring 6 and the second spring 8. The sealing assembly also includes a slider 24, which is fixedly connected to the bottom of the sleeve 22. The outer wall of the cylinder 5 is provided with a groove 23, and the slider 24 is slidably disposed inside the groove 23. When the buffer rod 7 moves downward, it will drive the sleeve 22 and the slider 24 to move. By sliding the slider 24 in the groove 23, the sleeve 22 can be kept moving smoothly. The bottom of the inner wall of the sleeve 22 is fixed. A first sealing pad 25 is attached, and a second sealing pad 26 is fixed to the top of the outer wall of the cylinder 5. The shape of the first sealing pad 25 matches the shape of the second sealing pad 26. Both the first sealing pad 25 and the second sealing pad 26 are made of rubber. In normal conditions, the first spring 6 and the second spring 8 will push the buffer rod 7 upward. When the buffer rod 7 is pushed up, it will also push the sleeve 22 and the first sealing pad 25 upward together, so that the first sealing pad 25 can be fitted under the second sealing pad 26. The two are fitted together and are made of rubber, which can achieve a sealing effect, preventing the humid air in the elevator shaft from entering the sleeve 22 through the gap between the sleeve 22 and the cylinder 5, and keeping the environment around the first spring 6 and the second spring 8 dry.

[0033] Furthermore, such as Figure 4 , Figure 8 , Figure 9As shown, a control assembly for preventing corrosion of the first spring 6 and the second spring 8 is provided on one side of the sleeve 22. The control assembly includes a retaining frame 30, which is fixed to the outer wall of the sleeve 22. The outer wall of the sleeve 22 has an installation groove, and a placement frame 27 is inserted into the inner wall of the installation groove. By providing an installation groove inside the sleeve 22, the placement frame 27 can be inserted into the installation groove. The interior of the placement frame 27 is filled with a desiccant. The desiccant inside the placement frame 27 dehumidifies the air entering the placement frame 27, thus maintaining the humidity of the sleeve. The cylinder 22 ventilates and dehumidifies simultaneously. An arc-shaped piece 28 is fixed to one side of the placement frame 27. One side of the arc-shaped piece 28 has a long groove communicating with the inner wall of the placement frame 27. A pull block 29 is fixed to one side of the arc-shaped piece 28. An opening of the same size as the arc-shaped piece 28 is opened on one side of the retaining frame 30. After the placement frame 27 is installed in the mounting groove, the arc-shaped piece 28 will be inserted into the retaining frame 30. When the dehumidifier needs to be replaced during maintenance, the pull block 29 can be pulled out to remove the arc-shaped piece 28 and the placement frame 27 for easy replacement of the dehumidifier. The control assembly also includes a humidity detector 31, which is fixedly connected to one side of the sleeve 22. A circular hole is provided on one side of the sleeve 22, and a probe 32 is fixedly connected to one side of the humidity detector 31. The probe 32 extends into the circular hole. By placing the probe 32 inside the circular hole, it can be inserted into the cylinder 5, thereby cooperating with the humidity detector 31 to detect the humidity inside the cylinder 5. A second hydraulic rod 33 is fixedly connected to the bottom of the humidity detector 31, and a sealing plate 34 is fixedly connected to the output end of the second hydraulic rod 33. When the humidity inside the cylinder 5 exceeds the standard... The second hydraulic rod 33 can be retracted by circuit control. The retraction of the second hydraulic rod 33 can drive the sealing plate 34 to move upward. The sealing plate 34 is inserted into the inner wall of the frame 30. The sealing plate 34 is set on one side of the arc-shaped piece 28. When the sealing plate 34 moves upward, one side of the arc-shaped piece 28 can be opened, allowing air to enter the placement frame 27 through the long groove on the arc-shaped piece 28. The air can be dehumidified by desiccant to form dry air. When the dry air enters the cylinder 5, it can neutralize the humidity of the air in the cylinder 5.

[0034] Furthermore, such as Figure 3 and Figure 8As shown, a circular plate 35 is fixedly connected to the bottom of the car body 4, and an airbag 36 is fixedly connected to the bottom of the circular plate 35. By setting the circular plate 35 and the airbag 36 at the bottom of the car body 4, when the car body 4 falls, the airbag 36 will first contact the buffer bar 7 below. When the airbag 36 is impacted by the car body 4 and the buffer bar 7, it will contract. The contraction of the airbag 36 can offset part of the impact force, thereby playing a buffering role. A top plate 37 is fixedly connected to the top of the buffer bar 7. The top plate 37 is circular in shape. A receiving plate 38 is fixedly connected to the top of the top plate 37. The top of the receiving plate 38 is arc-shaped. The receiving plate 38 is set at the bottom of the airbag 36. By setting the top plate 37 and the receiving plate 38 at the top of the buffer rod 7, the airbag 36 can contact the top of the receiving plate 38 first when it falls downward. Since the top of the receiving plate 38 is arc-shaped, it can better contact the airbag 36, increase the force-bearing area of ​​the airbag 36, and help the airbag 36 to distribute the pressure evenly on the receiving plate 38 when it is squeezed.

[0035] Working principle: To solve the problem of passengers being injured when the spring buffer lifts the car after storing energy, a sleeve 22 is installed during routine maintenance of the buffer to protect the outer walls of the first spring 6 and the second spring 8, preventing debris falling into the elevator shaft from getting stuck in the first spring 6 and the second spring 8. Under normal conditions, the first spring 6 and the second spring 8 will lift the buffer rod 7 upward. When the buffer rod 7 is lifted, the sleeve 22 and the first sealing pad 25 will also be lifted upward, so that the first sealing pad 25 can be fitted under the second sealing pad 26. The two are interlocked and made of rubber, which can achieve a sealing effect and prevent humid air in the elevator shaft from entering the sleeve 22 through the gap between the sleeve 22 and the cylinder 5. This keeps the environment around the first spring 6 and the second spring 8 dry. When the buffer rod 7 moves downward, it will drive the sleeve 22 and the slider 24 to move. The slider 24 slides in the groove 23, which allows the sleeve 22 to move smoothly.

[0036] By providing an installation groove inside the sleeve 22, the placement frame 27 can be inserted into the installation groove. The dehumidifier filled inside the placement frame 27 dehumidifies the air entering the placement frame 27, maintaining ventilation inside the sleeve 22 while dehumidifying. After the placement frame 27 is installed in the installation groove, the arc-shaped piece 28 will be inserted into the retaining frame 30. In the inactive state, the second hydraulic rod 33 will push the sealing plate 34 downward, causing the sealing plate 34 to seal one side of the placement frame 27, blocking airflow. By providing a probe 32 inside the circular hole, the probe 32 can be inserted into the cylinder 5, thus cooperating with the humidity detector. 31. The humidity inside the cylinder 5 is detected. When the humidity inside the cylinder 5 exceeds the standard, the second hydraulic rod 33 can be contracted by circuit control. The contraction of the second hydraulic rod 33 can drive the sealing plate 34 to move upward. When the sealing plate 34 moves upward, one side of the arc-shaped plate 28 can be opened, allowing air to enter the placement frame 27 through the long groove on the arc-shaped plate 28. The air can be dehumidified by the desiccant to form dry air. When the dry air enters the cylinder 5, it can neutralize the humidity of the air inside the cylinder 5. When the desiccant needs to be replaced during maintenance, the pull block 29 can be pulled out to pull out the arc-shaped plate 28 and the placement frame 27 for easy replacement of the desiccant.

[0037] When the car body 4 is not falling, the first hydraulic rod 20 pushes the mounting block 17 and ratchet 18 to one side, keeping the ratchet 18 on the ratchet 16, so that the ratchet 16 can only rotate counterclockwise. When the car body 4 falls, the sliding frame 3 will slide on the guide rail 1. Guided by the guide rail 1 and the sliding frame 3, the car body 4 moves vertically downward. By setting a circular plate 35 and an airbag 36 at the bottom of the car body 4, the airbag 36 can contact the top of the receiving plate 38 first when the car body 4 falls. Since the top of the receiving plate 38 is arc-shaped, it can better... The airbag 36 is in good contact with the cushioning rod 7, which increases the force-bearing area of ​​the airbag 36. This helps the airbag 36 to distribute the pressure evenly on the receiving plate 38 when it is compressed. When the airbag 36 is impacted by the car body 4 and the buffer rod 7, it will contract. The contraction of the airbag 36 can offset part of the impact force, thus playing a buffering role. When the bottom of the car body 4 contacts the top of the buffer rod 7, it will press the buffer rod 7 downward. This can simultaneously compress the first spring 6 at the bottom and the second spring 8 at the top of the buffer rod 7. The energy stored in the first spring 6 and the second spring 8 can offset the impact force of the car body 4 falling.

[0038] When the buffer rod 7 moves downward, it drives the rack 13 to move downward. When the rack 13 slides within the first mounting frame 11, it drives the gear 15 meshing on one side to rotate counterclockwise. When the gear 15 rotates, it drives the center rod 14 to rotate. By setting a circular sleeve, the center rod 14 can be supported. When the gear 15 drives the center rod 14 to rotate, since the two sets of baffles 21 are set on both sides of the circular sleeve, the position of the center rod 14 can be limited to prevent the center rod 14 from shifting during rotation. At the same time as the center rod 14 rotates counterclockwise, it drives the ratchet 16 to rotate counterclockwise. The counterclockwise rotating ratchet 16 passes through the ratchet teeth 18. By setting a locking structure, the position of the ratchet teeth 18 can be set at the top of the ratchet 16. And the first spring When the first spring 6 and the second spring 8 are pushed upwards after accumulating energy, the ratchet 18 and the ratchet 16 can lock the center rod 14 and the gear 15. After the gear 15 is locked, it will lock the position of the rack 13 and the buffer rod 7, thereby preventing the impact force released by the first spring 6 and the second spring 8 after accumulating energy from causing secondary injury to the passengers in the car body 4. After the car body 4 falls, the passengers need to be rescued in time. After the passengers are rescued and their safety is ensured, the second hydraulic rod 33 can be retracted to move the mounting block 17 and the ratchet 18 away from the side of the ratchet 16, thereby releasing the lock on the first spring 6 and the second spring 8. When the buffer is disassembled, the energy stored in the first spring 6 and the second spring 8 can be released to prevent safety hazards during subsequent disassembly.

[0039] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A buffer device for an elevator car, comprising a guide rail (1), a base plate (2) fixedly connected to the bottom of the guide rail (1), a sliding frame (3) slidably disposed on one side of the guide rail (1), a car body (4) fixedly connected to one side of the sliding frame (3), two sets of the guide rail (1) and the sliding frame (3) being symmetrically distributed on both sides of the car body (4), a cylinder (5) fixedly connected to the top of the base plate (2), a first spring (6) fixedly connected to the inner wall of the cylinder (5), a buffer rod (7) fixedly connected to the top of the first spring (6), a second spring (8) fixedly connected to one side of the top of the buffer rod (7), and the bottom of the second spring (8) fixedly connected to the top of the cylinder (5), characterized in that: It also includes a blocking component for mitigating the impact of spring energy storage, the blocking component being disposed on one side of the base plate (2), and a sealing component for protecting the first spring (6) and the second spring (8) being disposed on the top of the cylinder (5), the sealing component including a sleeve (22), the sleeve (22) being fixed to the top of the buffer rod (7), and a control component for preventing the first spring (6) and the second spring (8) from rusting being disposed on one side of the sleeve (22).

2. The buffer device for an elevator car according to claim 1, characterized in that, The blocking assembly includes a side plate (9) fixed to one side of the base plate (2). A support rod (10) is fixed to the top of the side plate (9). One side of the support rod (10) has a first mounting frame (11), and the other side of the support rod (10) is fixed to a second mounting frame (12). A circular sleeve is fixed to the top of the support rod (10), and a central rod (14) is rotatably connected to the inner wall of the circular sleeve. Both ends of the central rod (14) extend into the interior of the first mounting frame (11) and the second mounting frame (12), respectively. A gear is fixed to one end of the central rod (14). 15), the gear (15) is located inside the first mounting frame (11), the top end of the buffer rod (7) is fixedly connected to a rack (13), the rack (13) is inserted into the first mounting frame (11), the rack (13) meshes with one side of the gear (15), the other end of the center rod (14) is fixedly connected to a ratchet (16), the ratchet (16) is located inside the second mounting frame (12), the second mounting frame (12) is provided with a locking structure, the locking structure includes a ratchet (18), the ratchet (18) is engaged with the top end of the ratchet (16).

3. A buffer device for an elevator car according to claim 2, characterized in that, The locking structure also includes a vertical plate (19), which is fixed to the top of the side plate (9). A first hydraulic rod (20) is fixed to the top of one side of the vertical plate (19). An installation block (17) is fixed to the output end of the first hydraulic rod (20). The installation block (17) is located inside the second mounting frame (12). The ratchet (18) is located on the inner wall of the installation block (17).

4. A buffer device for an elevator car according to claim 2, characterized in that, The outer wall of the central rod (14) is fixed with a baffle (21). There are two sets of baffles (21) and they are distributed in parallel on the outer wall of the central rod (14). The baffles (21) are circular in shape, and the two sets of baffles (21) are arranged on both sides of the circular sleeve.

5. A buffer device for an elevator car according to claim 1, characterized in that, The closing assembly also includes a slider (24), which is fixed to the bottom of the sleeve (22). The outer wall of the cylinder (5) is provided with a groove (23), and the slider (24) is slidably disposed inside the groove (23).

6. A buffer device for an elevator car according to claim 5, characterized in that, The bottom of the inner wall of the sleeve (22) is fixedly connected to a first sealing pad (25), and the top of the outer wall of the cylinder (5) is fixedly connected to a second sealing pad (26). The shape of the first sealing pad (25) matches the shape of the second sealing pad (26). The first sealing pad (25) and the second sealing pad (26) are both made of rubber.

7. A buffer device for an elevator car according to claim 1, characterized in that, The control component includes a frame (30), which is fixed to the outer wall of the sleeve (22). The outer wall of the sleeve (22) has an installation groove, and a placement frame (27) is inserted into the inner wall of the installation groove. The placement frame (27) is filled with dehumidifier. An arc-shaped piece (28) is fixed to one side of the placement frame (27). An elongated groove communicating with the inner wall of the placement frame (27) is opened on one side of the arc-shaped piece (28). A pull block (29) is fixed to one side of the arc-shaped piece (28). An opening of the same size as the arc-shaped piece (28) is opened on one side of the frame (30).

8. A buffer device for an elevator car according to claim 7, characterized in that, The control component also includes a humidity detector (31), which is fixed to one side of the sleeve (22). A circular hole is provided on one side of the sleeve (22). A probe (32) is fixed to one side of the humidity detector (31). The probe (32) extends into the circular hole. A second hydraulic rod (33) is fixed to the bottom of the humidity detector (31). A sealing plate (34) is fixed to the output end of the second hydraulic rod (33). The sealing plate (34) is inserted into the inner wall of the frame (30). The sealing plate (34) is located on one side of the arc-shaped piece (28).

9. A buffer device for an elevator car according to claim 1, characterized in that, A circular plate (35) is fixedly connected to the bottom of the car body (4), and an airbag (36) is fixedly connected to the bottom of the circular plate (35).

10. A buffer device for an elevator car according to claim 9, characterized in that, The top of the buffer rod (7) is fixedly connected to a top plate (37), which is circular in shape. The top of the top plate (37) is fixedly connected to a receiving plate (38), which is arc-shaped at the top. The receiving plate (38) is located at the bottom of the airbag (36).

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