CN211871091U

CN211871091U - Hydraulic buffer for elevator pit

Info

Publication number: CN211871091U
Application number: CN202020307039.9U
Authority: CN
Inventors: 冒沿宏; 冒毓杰
Original assignee: Nantong Hongtu Rubber And Plastic Co ltd
Current assignee: Nantong Hongtu Rubber And Plastic Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-11-06
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses an elevator pit hydraulic buffer, piston rod upper end is located in being hit the head, it is equipped with the amortization cover to hit overhead side, in the casing was located to the piston rod below, the casing was down "protruding" type structure, the piston rod lower extreme is equipped with the inner tube, in the casing was located to the inner tube, the piston rod was equipped with the piston with the inner tube junction, the piston lower extreme is equipped with reset spring, inner tube one side below is equipped with the oil drain hole, the inner tube below is equipped with the check valve, the check valve below is connected with the oil filler point, the casing below is equipped with the installation, be equipped with hydraulic telescoping. The utility model discloses an adopting hydraulic pressure and elasticity two-stage buffering, when the buffer is compressed, earlier with elastic buffering as leading, make the piston rod drive piston compression reset spring take place deformation gradually, after reset spring is in completely by the compression state, use the hydraulic telescoping rod buffering between casing and the installation base to lead this moment, produce the system to stop the effort to elevator car, can obtain better buffering effect.

Description

Hydraulic buffer for elevator pit

Technical Field

The utility model relates to an elevator technical field specifically is an elevator pit hydraulic buffer.

Background

The elevator is a vertical elevator powered by a motor, and is provided with a box-shaped nacelle for people riding in a multistoried building or carrying goods, the vertical elevator is provided with a car which runs between at least two rows of vertical rigid guide rails or rigid guide rails with the inclination angle smaller than 15 degrees, and the size and the structural form of the car are convenient for passengers to get in and out or load and unload goods. Along with the continuous progress of science and technology, the living standard of human beings is continuously improved, the application range of the elevator is continuously expanded no matter in a large-scale market or a family, wherein the quality of the buffer capacity of a buffer of a main damping part of the elevator and the quality of the buffer directly influence the riding quality of the elevator, the buffer is a final barrier of the safety of the elevator, and when the elevator runs out of control and collides with a pit, the buffer absorbs or consumes the impact energy of the descending of the elevator, so that the elevator car is decelerated, buffered and stopped on the buffer. In the prior art, most elevator buffer devices adopt a direct-pressure pit buffer device, the buffer device has small buffer stroke and poor buffer performance, the elevator car falling due to stall is easy to damage, and leads to the injury and death of passengers in the elevator cage, at present, a spring buffer is also used in part of the buffer devices of the elevators, the spring buffer is an energy storage type buffer, because the spring buffer converts the kinetic energy and potential energy of the car or the counterweight into the elastic potential energy of the spring after being impacted, the car or the counterweight is buffered and decelerated due to the reaction force of the spring, but when the spring is compressed to the limit position, the elastic potential energy in the process of releasing the buffer by the spring enables the lift car to rebound and rise, the impact speed is higher, the rebound speed is higher, the operation is repeated until the elastic force disappears and the energy is exhausted, the elevator can be completely static, therefore, the spring buffer has the defects of easy rebound phenomenon after buffering and unstable buffering; the hydraulic buffer belongs to a follow-up energy-consuming buffer, the existing energy-consuming buffers of most elevators have the problems of short service life, poor buffer quality and obvious shaking and dynamic feeling of people in the stopping and starting processes of elevator cars, and therefore the hydraulic buffer of the elevator with good stability and long service life is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an elevator pit hydraulic buffer, simple structure, have can steadily slow down, the good advantage of fail safe nature, can realize the gentle buffering effect of elevator car to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a hydraulic buffer for an elevator pit comprises a shell, a piston rod, a reset spring, a piston, an oil filling hole, a check valve, an oil discharge hole, hydraulic oil, an installation base, a hydraulic telescopic rod, a collided head, a silencing sleeve, an oil return hole and an inner tube, wherein the upper end of the piston rod is arranged in the collided head, the silencing sleeve is arranged above the collided head, the lower end of the piston rod is arranged in the shell, the shell is of an inverted convex structure, the lower end of the piston rod is provided with the inner tube, the inner tube is arranged in the shell, the piston is arranged at the joint of the piston rod and the inner tube, the lower end of the piston is provided with the reset spring, the oil discharge hole is arranged below one side of the inner tube, the oil return hole is arranged above one side of the inner tube, the check valve is arranged below the inner tube, the lower end of the, and a hydraulic telescopic rod is arranged between the mounting base and the shell.

Preferably, the side edge of the middle part of the piston rod is provided with an oil seal.

Preferably, the hydraulic telescopic rods are provided with two groups, the lower ends of the hydraulic telescopic rods are respectively arranged on two sides of the upper surface of the mounting base, and the upper ends of the hydraulic telescopic rods are respectively arranged on two sides of the lower surface of the shell.

Preferably, the mounting base is of a convex structure, and mounting holes are formed in two ends of the mounting base.

Preferably, a pressure storage sponge is arranged above the inner wall of the shell.

Preferably, the pressure storage sponge is provided with a plurality of groups.

Preferably, the material of the sound attenuation sleeve is polyurethane material.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses an adopting hydraulic pressure and elasticity two-stage buffering, when the buffer is compressed, use elastic buffering to lead earlier, make the piston rod drive piston compression reset spring take place deformation gradually, after reset spring is in completely by the compression state, use the hydraulic telescoping rod buffering between casing and the installation base to lead this moment, produce the system to stop the effort to elevator car, the process from elastic buffering to hydraulic buffering is realized in the two-stage buffering, can obtain better buffering effect, make the system to the car stop the effort and more tend to linear change, it is more steady.

(2) The utility model discloses an rely on the inside flourishing hydraulic oil that has of inner tube to carry out the shock attenuation to the part that is located piston upper portion, hydraulic oil has viscosity big to have mobile characteristics, the buffering effect of production will be more stable than reset spring, and can avoid producing the unnecessary noise in shock attenuation process.

(3) The utility model discloses a be fixed with at the piston rod top and hit the head, can reduce partly pressure at the buffering in-process to hit first upper portion and be fixed with the amortization cover, can reduce the noise that produces when part and buffer contact.

Drawings

Fig. 1 is a view showing an overall configuration of a hydraulic shock absorber.

In the figure: 1-a shell; 2-a piston rod; 3-a return spring; 4-a piston; 5-oil hole; 6-a check valve; 7-oil drain hole; 8-hydraulic oil; 9-mounting a base; 10-hydraulic telescopic rod; 11-a collided head; 12-a silencing sleeve; 13-oil return hole; 14-oil seal; 15-pressure storage sponge; 16-mounting holes; 17-inner tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a hydraulic buffer for elevator pit is composed of casing 1, piston rod 2, restoring spring 3, piston 4, oil filler hole 5, check valve 6, oil outlet 7, hydraulic oil 8, installing base 9, hydraulic telescopic rod 10, collision head 11, silencing sleeve 12, oil return hole 13 and internal tube 17, where the upper end of piston rod 2 is arranged in collision head 11, silencing sleeve 12 is arranged above collision head 11, the material of silencing sleeve 12 is polyurethane, collision head 11 is fixed on the top of piston rod 2, so that part of pressure can be reduced during buffering, silencing sleeve 12 is fixed on the upper part of collision head 11 to reduce noise generated when parts contact with buffer, pressure accumulating sponge 15 is arranged in casing 1 under piston rod 2, pressure accumulating sponge 15 is arranged above the inner wall of casing 1, multiple sets of pressure accumulating sponges 15 are arranged, oil seals 14 are arranged at the middle side of piston rod 2, casing 1 is of inverted 'convex' structure, the lower end of a piston rod 2 is provided with an inner pipe 17, the inner pipe 17 is arranged in a shell 1, a piston 4 is arranged at the joint of the piston rod 2 and the inner pipe 17, the lower end of the piston 4 is provided with a return spring 3, an oil discharge hole 7 is arranged below one side of the inner pipe 17, an oil return hole 13 is arranged above one side of the inner pipe 17, a check valve 6 is arranged below the inner pipe 17, the lower part of the check valve 6 is connected with an oil injection hole 5, hydraulic oil 8 is arranged inside the inner pipe 17, parts positioned at the upper part of the piston 4 are damped by the hydraulic oil 8 contained inside the inner pipe 17, the hydraulic oil 8 has the characteristics of high viscosity and fluidity, the generated damping effect is more stable than that of the return spring 3, unnecessary noise can be avoided in the damping process, an installation base 9 is arranged below the shell 1, the installation base 9 is of a convex structure, installation holes 16, hydraulic telescoping rod 10 is equipped with two sets ofly, hydraulic telescoping rod 10 lower extreme is located installation base 9 upper surface both sides respectively, 1 lower surface both sides of casing are located respectively to hydraulic telescoping rod 10 upper end, through adopting hydraulic pressure and elasticity two-stage buffering, when the buffer is compressed, use elastic buffering to lead earlier, make piston rod 2 drive piston 4 compression reset spring 3 take place deformation gradually, after reset spring 3 is in completely by the compression state, use the hydraulic telescoping rod 10 buffering between casing 1 and the installation base 9 to lead this moment, produce the system and stop the effort to elevator car, the process from elastic buffering to hydraulic buffering is realized to the two-stage buffering, can obtain better buffering effect, make the system stop the effort to the car more tend to linear change, it is more steady.

Application method

Through adopting hydraulic pressure and elasticity two-stage buffering, when the buffer was compressed, use elastic buffering earlier as leading, make piston rod 2 drive piston 4 compression reset spring 3 take place deformation gradually, after reset spring 3 was in by the compression state completely, use hydraulic telescoping rod 10 buffering between casing 1 and the installation base 9 as leading this moment, produce the system to stop the effort to elevator car, the process from elastic buffering to hydraulic buffering is realized to two-stage buffering, can obtain better buffering effect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an elevator pit hydraulic buffer which characterized in that: comprises a shell (1), a piston rod (2), a reset spring (3), a piston (4), an oil filling hole (5), a check valve (6), an oil discharge hole (7), hydraulic oil (8), an installation base (9), a hydraulic telescopic rod (10), a collided head (11), a silencing sleeve (12), an oil return hole (13) and an inner tube (17), wherein the upper end of the piston rod (2) is arranged in the collided head (11), the silencing sleeve (12) is arranged above the collided head (11), the lower part of the piston rod (2) is arranged in the shell (1), the shell (1) is of an inverted convex structure, the lower end of the piston rod (2) is provided with the inner tube (17), the inner tube (17) is arranged in the shell (1), the piston (4) is arranged at the joint of the piston rod (2) and the inner tube (17), the reset spring (3) is arranged at the lower end of the piston (4), inner tube (17) one side below is equipped with oil drain hole (7), inner tube (17) one side top is equipped with oil gallery (13), inner tube (17) below is equipped with check valve (6), check valve (6) below with oil filler point (5) are connected, inner tube (17) inboard is equipped with hydraulic oil (8), casing (1) below is equipped with installation base (9), installation base (9) with be equipped with hydraulic telescoping rod (10) between casing (1).

2. The elevator pit hydraulic buffer of claim 1, wherein: and an oil seal (14) is arranged on the side edge of the middle part of the piston rod (2).

3. The elevator pit hydraulic buffer of claim 1, wherein: the hydraulic telescopic rods (10) are arranged in two groups, the lower ends of the hydraulic telescopic rods (10) are arranged on the two sides of the upper surface of the mounting base (9) respectively, and the upper ends of the hydraulic telescopic rods (10) are arranged on the two sides of the lower surface of the shell (1) respectively.

4. The elevator pit hydraulic buffer of claim 1, wherein: the mounting base (9) is of a convex structure, and mounting holes (16) are formed in two ends of the mounting base (9).

5. The elevator pit hydraulic buffer of claim 1, wherein: and a pressure storage sponge (15) is arranged above the inner wall of the shell (1).

6. The elevator pit hydraulic buffer of claim 5, wherein: the pressure-accumulating sponge (15) is provided with a plurality of groups.

7. The elevator pit hydraulic buffer of claim 1, wherein: the material of the silencing sleeve (12) is polyurethane.