Car elevator spring buffer

Abstract

The utility model relates to buffer technical field, and disclose a kind of car elevator spring buffer, solve the problem of the stability of the use of existing spring buffer is not good, it includes support base, hydraulic damper and buffer spring, the hydraulic damper is welded in the middle position of support base top end, support ring is fixedly arranged on the outer surface of hydraulic damper, the top of hydraulic damper is fixedly provided with flexible buffer support, buffer spring is sleeved in hydraulic damper and located between support ring and flexible buffer support, hydraulic damper is composed of support cover, piston, hollow telescopic rod and plugging assembly;Through the spring buffer, through the combined design of hydraulic damper and buffer spring, the phased absorption of kinetic energy can be realized, the resilience is reduced, and the buffering effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of buffer technology, specifically a spring buffer for a car elevator. Background Technology

[0002] Elevator car spring buffers are used to provide safety buffering protection for elevators, reduce impact force, and thus ensure the safety of passengers. Traditional pure spring buffer structures are prone to rebound during the buffering process, which may lead to secondary impacts, resulting in poor safety and stability. Moreover, a single buffer structure cannot withstand impact forces at different speeds with varying hardness. Therefore, this application proposes an elevator car spring buffer. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a car elevator spring buffer, which effectively solves the problem of poor stability of existing spring buffers.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a car elevator spring buffer, comprising a support base, a hydraulic damper and a buffer spring, wherein the hydraulic damper is welded to the middle position of the top of the support base, a support ring is fixedly provided on the outer surface of the hydraulic damper, a flexible buffer support is fixedly provided on the top of the hydraulic damper, and the buffer spring is sleeved on the hydraulic damper and located between the support ring and the flexible buffer support.

[0005] The hydraulic damper consists of a support sleeve, a piston, a hollow telescopic rod, and a sealing assembly. The support sleeve is welded to the middle of the top of the support base. The piston is slidably connected to the inside of the support sleeve. A central oil hole is opened in the middle of the piston. The hollow telescopic rod passes through the middle of the top of the support sleeve and is connected to the piston. The sealing assembly is installed at the bottom of the inside of the hollow telescopic rod. The bottom of the inside of the support sleeve is filled with hydraulic oil. Several lateral through holes are opened at the bottom of the side of the hollow telescopic rod.

[0006] The sealing assembly consists of a support frame, a limiting rod, a spring, and a sealing cone. The support frame is fixedly connected to the inside of the hollow telescopic rod. The limiting rod slides through the support frame. The sealing cone is connected to the bottom end of the limiting rod. The spring is sleeved on the limiting rod and located between the support frame and the sealing cone. Two L-shaped oil passages are opened on the sealing cone.

[0007] Preferably, the L-shaped oil passage is connected to the central oil hole.

[0008] Preferably, an oil injection pipe is provided through one side of the support sleeve, and a sealing cap is provided at the end of the oil injection pipe away from the support sleeve.

[0009] Preferably, a rubber gasket matching the flexible buffer support is fixedly provided on the side of the top end of the support sleeve.

[0010] Preferably, the flexible buffer support is composed of a metal support plate, a rubber seat and several rubber protrusions. The metal support plate is welded to the top of the hollow telescopic rod, the rubber seat is connected to the top of the metal support plate, and the rubber protrusions are connected to the top of the rubber seat.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) In operation, by setting a buffer spring and a hydraulic damper consisting of a support sleeve, piston, hollow telescopic rod and sealing assembly, the kinetic energy can be absorbed in stages, controllable resistance can be formed, the spring rebound rate can be reduced in the buffering process, thereby improving the stability of the buffering process and avoiding oscillation.

[0013] (2) By setting up an oil injection pipe, hydraulic oil can be injected. By setting up a rubber gasket and a flexible buffer support consisting of a metal support plate, a rubber seat and several rubber protrusions, the impact force can be reduced during the buffering process, and noise can be reduced at the same time. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the spring buffer structure of the elevator car of this utility model;

[0017] Figure 2 This is one of the cross-sectional views of the elevator car spring buffer of this utility model;

[0018] Figure 3 This is the second sectional view of the spring buffer of the elevator car of this utility model;

[0019] In the diagram: 1. Support base; 2. Hydraulic damper; 3. Buffer spring; 4. Support ring; 5. Flexible buffer support; 6. Support sleeve; 7. Piston; 8. Hollow telescopic rod; 9. Sealing assembly; 10. Central oil hole; 11. Support frame; 12. Limiting rod; 13. Spring; 14. Sealing cone; 15. L-shaped oil passage; 16. Hydraulic oil; 17. Oil injection pipe; 18. Rubber gasket; 19. Metal support plate; 20. Rubber seat; 21. Rubber protrusion; 22. Lateral through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1 to 3 The present invention provides a spring buffer for a car elevator, comprising a support base 1, a hydraulic damper 2, and a buffer spring 3. The hydraulic damper 2 is welded to the middle position of the top of the support base 1. A support ring 4 is fixedly provided on the outer surface of the hydraulic damper 2. A flexible buffer support 5 is fixedly provided on the top of the hydraulic damper 2. The buffer spring 3 is sleeved on the hydraulic damper 2 and located between the support ring 4 and the flexible buffer support 5.

[0022] The buffer spring 3 can achieve the buffering and protection function, and the hydraulic damper 2 can achieve the damping function, improve the stability of the buffering process, and reduce the rebound force.

[0023] The hydraulic damper 2 consists of a support sleeve 6, a piston 7, a hollow telescopic rod 8, and a sealing assembly 9. The support sleeve 6 is welded to the middle of the top of the support base 1. The piston 7 is slidably connected to the inside of the support sleeve 6, and a central oil hole 10 is provided in the middle of the piston 7. The hollow telescopic rod 8 passes through the middle of the top of the support sleeve 6 and is connected to the piston 7. The sealing assembly 9 is installed at the bottom of the hollow telescopic rod 8. The bottom of the support sleeve 6 is filled with hydraulic oil 16. Several lateral through holes 22 are provided at the bottom of the side of the hollow telescopic rod 8. The sealing assembly 9 is composed of... The support frame 11, the limiting rod 12, the spring 13 and the sealing cone 14 are composed of a support frame 11, a limiting rod 12, a spring 13 and a sealing cone 14. The support frame 11 is fixedly connected to the inside of the hollow telescopic rod 8. The limiting rod 12 slides through the support frame 11. The sealing cone 14 is connected to the bottom end of the limiting rod 12. The spring 13 is sleeved on the limiting rod 12 and located between the support frame 11 and the sealing cone 14. Two L-shaped oil passages 15 are opened on the sealing cone 14. The L-shaped oil passages 15 are connected to the central oil hole 10. An oil injection pipe 17 is provided through one side of the support sleeve 6. A sealing cap is provided at the end of the oil injection pipe 17 away from the support sleeve 6.

[0024] During the rapid descent of the elevator car, it comes into contact with the flexible buffer support 5. The flexible buffer support 5 drives the hollow telescopic rod 8 to move downward, and the hollow telescopic rod 8 drives the piston 7 to move downward. At this time, the air inside the piston 7 and the hollow telescopic rod 8 is compressed, and pneumatic buffering is achieved through air compression. When the piston 7 comes into contact with the hydraulic oil 16, the damping of the sealing cone 14 increases, the spring 13 contracts, and the sealing cone 14 separates from the central oil hole 10. At this time, the hydraulic oil 16 passes through the central oil hole 10 and moves to the bottom of the hollow telescopic rod 8. Then, it enters the gap between the hollow telescopic rod 8 and the support sleeve 6 through the side through hole 22. When the elevator car moves to the bottom, the buffer spring 3 generates a reaction force, and the sealing cone 14 resets. The hydraulic oil 16 can only flow back through the L-shaped oil passage 15, which slows down the return speed of the hydraulic oil 16, thereby reducing the rebound impact force of the buffer spring 3.

[0025] A rubber washer 18 matching the flexible buffer support 5 is fixedly installed on the side of the top of the support sleeve 6, which can play a buffering role.

[0026] The flexible buffer support 5 consists of a metal support plate 19, a rubber seat 20, and several rubber protrusions 21. The metal support plate 19 is welded to the top of the hollow telescopic rod 8, the rubber seat 20 is connected to the top of the metal support plate 19, and the rubber protrusions 21 are connected to the top of the rubber seat 20, which can provide a buffering effect for the elevator.

[0027] During operation, by incorporating a buffer spring and a hydraulic damper consisting of a support sleeve, piston, hollow telescopic rod, and sealing assembly, kinetic energy can be absorbed in stages, creating controllable resistance. This reduces the spring's rebound rate during the buffering process, thereby improving the smoothness of the buffering process and preventing oscillations. The addition of an oil injection pipe allows for the injection of hydraulic oil. Furthermore, the use of rubber gaskets and a flexible buffer support consisting of a metal support plate, rubber seat, and several rubber protrusions reduces impact force and noise during the buffering process.

Claims

1. A spring buffer for a car elevator, comprising a support base (1), a hydraulic damper (2), and a buffer spring (3), characterized in that: The hydraulic damper (2) is welded to the middle position of the top of the support base (1). A support ring (4) is fixedly installed on the outer surface of the hydraulic damper (2). A flexible buffer support (5) is fixedly installed at the top of the hydraulic damper (2). A buffer spring (3) is sleeved on the hydraulic damper (2) and located between the support ring (4) and the flexible buffer support (5). The hydraulic damper (2) consists of a support sleeve (6), a piston (7), a hollow telescopic rod (8), and a sealing assembly (9). The support sleeve (6) is welded to the middle position of the top of the support base (1). The piston (7) is slidably connected to the inside of the support sleeve (6). A central oil hole (10) is provided in the middle position of the piston (7). The hollow telescopic rod (8) passes through the middle position of the top of the support sleeve (6) and is connected to the piston (7). The sealing assembly (9) is installed at the bottom of the hollow telescopic rod (8). The bottom of the support sleeve (6) is filled with hydraulic oil (16). Several lateral through holes (22) are provided at the bottom of the side of the hollow telescopic rod (8). The sealing assembly (9) consists of a support frame (11), a limiting rod (12), a spring (13), and a sealing cone (14). The support frame (11) is fixedly connected to the inside of the hollow telescopic rod (8). The limiting rod (12) slides through the support frame (11). The sealing cone (14) is connected to the bottom end of the limiting rod (12). The spring (13) is sleeved on the limiting rod (12) and located between the support frame (11) and the sealing cone (14). Two L-shaped oil passages (15) are opened on the sealing cone (14).

2. The elevator car spring buffer according to claim 1, characterized in that: The L-shaped oil passage (15) is connected to the central oil hole (10).

3. The elevator car spring buffer according to claim 1, characterized in that: An oil injection pipe (17) is provided through one side of the support sleeve (6), and a sealing cap is provided at the end of the oil injection pipe (17) away from the support sleeve (6).

4. The elevator car spring buffer according to claim 1, characterized in that: A rubber gasket (18) matching the flexible buffer support (5) is fixedly provided on the side of the top of the support sleeve (6).

5. A spring buffer for a car elevator according to claim 1, characterized in that: The flexible buffer support (5) is composed of a metal support plate (19), a rubber seat (20) and several rubber protrusions (21). The metal support plate (19) is welded to the top of the hollow telescopic rod (8), the rubber seat (20) is connected to the top of the metal support plate (19), and the rubber protrusions (21) are connected to the top of the rubber seat (20).

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