CN217837986U

CN217837986U - High-performance hydraulic buffer for elevator

Info

Publication number: CN217837986U
Application number: CN202221114638.4U
Authority: CN
Inventors: 杨宇恒; 杨红艳; 陈学民
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-11-18
Anticipated expiration: 2032-05-11

Abstract

The utility model relates to a buffer technical field especially relates to a high performance hydraulic buffer for elevator. A high-performance hydraulic buffer for an elevator comprises a cylinder body, a plunger cylinder and an upper return spring which are coaxially arranged, wherein the upper return spring is arranged between the cylinder body and the plunger cylinder, a plunger is arranged at the bottom of the plunger cylinder, a variable shaft is arranged at the axis of the bottom of the cylinder body and penetrates into a throttle plate of the plunger, and a lower conical spring is sleeved on the outer side of the bottom of the variable shaft. The reset capacity and the buffer performance of the hydraulic buffer are improved by the matching of the arranged lower conical spring and the upper reset spring; the top of plunger lid sets up blotter and the anti-skidding bulge loop that has spacing recess and has improved the stability after the buffer pushes down, avoids taking place the skew to empty among the buffer compression process.

Description

High-performance hydraulic buffer for elevator

Technical Field

The utility model relates to a buffer technical field especially relates to a high performance hydraulic buffer for elevator.

Background

An elevator buffer is an elevator safety device that provides the last line of safety protection. It is installed in the well pit of elevator, is located the car and is heavy directly below. When the steel wire rope of the elevator is broken, the traction friction force and the brake braking force are insufficient or the control system fails, the buffer has a buffering effect on the lift car so as to prevent the lift car or the counterweight of the elevator from directly colliding with the bottom or impacting the top, and protect the safety of passengers and equipment. Traditional elevator buffer buffering effect is poor, and structural strength is low, and the installation reliability is difficult to obtain guaranteeing in the well pit that is difficult for looking up for a long time, has great potential safety hazard, and the buffer is compressed the back, and the reliability that resets is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem, it is not enough to the technique that exists to the aforesaid, a high performance hydraulic buffer for elevator is provided, the lower cone spring that adopts the setting has improved hydraulic buffer's the reset capability and the shock-absorbing capacity with last reset spring cooperation, structural strength and the heat-sinking capability of a plunger section of thick bamboo have been strengthened through the convex ridge that sets up, it is poor to have solved traditional elevator buffer buffering effect, structural strength is low, long-term installation reliability is difficult to obtain the assurance in the well pit that is difficult for looking up, there is great potential safety hazard, the buffer is compressed the back, the poor problem of reliability resets.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a high-performance hydraulic buffer for an elevator comprises a cylinder body, a plunger cylinder and an upper return spring which are coaxially arranged, wherein the upper return spring is arranged between the cylinder body and the plunger cylinder, a plunger is arranged at the bottom of the plunger cylinder, a variable shaft is arranged at the axis of the bottom of the cylinder body and penetrates into a throttle plate of the plunger, and a lower conical spring is sleeved on the outer side of the bottom of the variable shaft.

Further optimize this technical scheme, the top of plunger section of thick bamboo is provided with the plunger lid, the inside evenly distributed of plunger section of thick bamboo has the convex ridge of a plurality of indents, the convex ridge support in the plunger lid with between the plunger.

Further optimize this technical scheme, the top of plunger lid is provided with a plurality of antiskid bulge loops, the top axle center department of plunger lid is provided with the blotter, the middle part of blotter is provided with spacing recess.

Further optimize this technical scheme, the bottom of cylinder body with the position that the conical spring corresponds down is provided with the holding tank.

According to the technical scheme, the throttling hole is formed in the middle of the throttling plate, and the throttling plate is tightly propped against the groove of the plunger through the arranged external thread sleeve.

Further optimize this technical scheme, the outside evenly distributed of cylinder body has a plurality of vertical fins.

Further optimize this technical scheme, be provided with the through-hole in the lower part lateral wall of plunger section of thick bamboo.

Compared with the prior art, the utility model has the advantages of it is following: 1. the lower conical spring and the upper return spring are matched, so that the resetting capability and the buffering performance of the hydraulic buffer are improved; 2. the lower conical spring is soaked in the buffer solution in the cylinder body for a long time and is well isolated from the outside, so that the service life of the lower conical spring is obviously prolonged; 3. the top of the plunger piston cover is provided with the buffer pad with the limiting groove and the anti-slip convex ring, so that the stability of the buffer after being pressed down is improved, and the buffer is prevented from shifting and toppling in the compression process; 4. the raised ridge improves the structural strength of the plunger cylinder and improves the heat dissipation capacity at the same time.

Drawings

Fig. 1 is a schematic view showing an external structure of a high-performance hydraulic buffer for an elevator.

Fig. 2 is a sectional view of a high-performance hydraulic buffer for an elevator.

Fig. 3 is an axial side partial cross-sectional view of the plunger barrel of fig. 2.

In the figure: 1. a cylinder body; 10. accommodating grooves; 11. a fin; 2. a plunger barrel; 21. a plunger cover; 211. an anti-slip convex ring; 212. a cushion pad; 213. a limiting groove; 22. a raised ridge; 23. a through hole; 3. an upper return spring; 4. a plunger; 41. a throttle plate; 411. an orifice; 42. an external thread sleeve; 5. a variable axis; 6. a lower conical spring; 7. a travel switch; 71. a switch striking rod; 72. a cantilever plate; 8. and a limiting block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the description is intended for purposes of illustration only and is not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1-3, a high-performance hydraulic buffer for an elevator comprises a cylinder body 1, a plunger cylinder 2 and an upper return spring 3, which are coaxially arranged, wherein the upper return spring 3 is arranged between the cylinder body 1 and the plunger cylinder 2, and a plurality of vertical fins 11 are uniformly distributed on the outer side of the cylinder body 1. The plunger 4 is arranged at the bottom of the plunger barrel 2, a groove is formed in the bottom of the plunger 4, a throttle plate 41 is arranged in the groove, a throttle hole 411 is formed in the middle of the throttle plate 41, and the throttle plate 41 is tightly propped in the groove of the plunger 4 through an external thread sleeve 42. A variable shaft 5 is arranged at the bottom axis of the cylinder body 1, the variable shaft 5 penetrates into the throttle hole 411 in the throttle plate 41 of the plunger 4, and a through hole 23 is arranged in the lower side wall of the plunger barrel 2. The outer side of the bottom of the variable shaft 5 is sleeved with a lower conical spring 6, the bottom of the cylinder body 1 and the position corresponding to the lower conical spring 6 are provided with accommodating grooves 10, and the lower conical spring 6 is coaxially arranged on the lower portion of a groove of the plunger 4.

As shown in fig. 1-2, a plunger cover 21 is disposed on the top of the plunger barrel 2, a plurality of concave ridges 22 are uniformly distributed inside the plunger barrel 2, and the ridges 22 are supported between the plunger cover 21 and the plunger 4. The top of the plunger cover 21 is provided with a plurality of anti-slip convex rings 211, the top axis of the plunger cover 21 is provided with a buffer pad 212, and the middle part of the buffer pad 212 is provided with a limit groove 213. A travel switch 7 is arranged on one side of the cylinder body 1, the travel switch 7 is fixedly connected with the cylinder body 1 through a cantilever plate 72, a switch striking rod 71 downwardly extends from one side of the plunger cover 21, and the switch striking rod 71 penetrates through the cantilever plate 72 and corresponds to the switch striking rod 71 in position.

When the buffer device is used, as shown in fig. 1-3, the bottom of the car and the counterweight can be provided with the limiting blocks 8, the limiting blocks 8 correspond to the limiting grooves 213, when an accident occurs, the plunger cylinder 2 is prevented from deflecting or even toppling over under the action of external force through the embedding of the limiting grooves 213 and the limiting blocks 8, the positioning stability is further improved through the arranged anti-slip convex ring 211, the plunger cover 21 is in threaded connection with the top of the plunger cylinder 2, the plunger cylinder 2 moves downwards to drive the plunger 4 to press the buffer solution in the cylinder 1 along the tapered variable shaft 5, the extruded buffer solution flows into the plunger cylinder 2 through the gap between the throttling hole 411 and the variable shaft 5, the buffer solution overflows into the cylinder 1 on the upper portion of the plunger 4 through the through hole 23, the buffer solution which is compressed to do work releases a large amount of heat, the buffer solution can be timely absorbed through the raised ridge 22 and is transmitted to the outside through the plunger cylinder 2 to dissipate heat, when the plunger 4 continues to press downwards, the plunger 4 is in contact with the lower conical spring 6 and can compress the lower conical spring 6 into the cylinder 10, the accommodating groove can be saved, the space in the plunger cylinder 1, the buffer device can not only improve the buffer capacity of the plunger cylinder 2, but also can restore the buffer shaft 5. The convex ridge 22 can improve the structural strength of the plunger cylinder 2 and improve the pressure-bearing performance of the buffer. The fins 11 are arranged outside the cylinder body 1, so that the heat dissipation capacity of the cylinder body 1 can be improved, better heat dissipation performance is improved for the temperature rise after the energy absorption of the cylinder body 1, and the performance reduction and even the failure of the buffer caused by the temperature rise are avoided.

Claims

1. A high-performance hydraulic buffer for an elevator comprises a cylinder body (1), a plunger cylinder (2) and an upper return spring (3) which are coaxially arranged, wherein the upper return spring (3) is arranged between the cylinder body (1) and the plunger cylinder (2), and a plunger (4) is arranged at the bottom of the plunger cylinder (2), and is characterized in that: the variable-rate shaft is characterized in that a variable-rate shaft (5) is arranged at the bottom axis of the cylinder body (1), the variable-rate shaft (5) penetrates into a throttle plate (41) of the plunger (4), and a lower conical spring (6) is sleeved on the outer side of the bottom of the variable-rate shaft (5).

2. The high-performance hydraulic buffer for an elevator according to claim 1, characterized in that: the plunger cover (21) is arranged at the top of the plunger barrel (2), a plurality of concave convex ridges (22) are uniformly distributed in the plunger barrel (2), and the convex ridges (22) are supported between the plunger cover (21) and the plunger (4).

3. The high-performance hydraulic buffer for an elevator according to claim 2, characterized in that: the top of plunger lid (21) is provided with a plurality of antiskid bulge loops (211), top axle center department of plunger lid (21) is provided with blotter (212), the middle part of blotter (212) is provided with spacing recess (213).

4. The high-performance hydraulic buffer for an elevator according to claim 1, characterized in that: and the bottom of the cylinder body (1) is provided with an accommodating groove (10) at a position corresponding to the lower conical spring (6).

5. The high-performance hydraulic buffer for an elevator according to claim 1, characterized in that: and the middle part of the throttle plate (41) is provided with a throttle hole (411), and the throttle plate (41) is tightly propped against the groove of the plunger (4) through an external thread sleeve (42).

6. The high-performance hydraulic buffer for an elevator according to claim 1, characterized in that: a plurality of vertical fins (11) are uniformly distributed on the outer side of the cylinder body (1).

7. The high-performance hydraulic buffer for an elevator according to claim 1, characterized in that: and a through hole (23) is formed in the side wall of the lower part of the plunger cylinder (2).