CN112303166A

CN112303166A - Flexible buffer type bumper shock absorber locking equipment

Info

Publication number: CN112303166A
Application number: CN202011165482.8A
Authority: CN
Inventors: 郑学威; 朱小鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-02-02

Abstract

The invention discloses flexible buffer type shock absorber stopping equipment which comprises a piston cylinder and a movable rod inserted in the piston cylinder in a sliding mode, wherein a limiting block is in interference fit on the movable rod and is connected with the inner wall of the piston cylinder in a sliding mode, a stopping block is horizontally and fixedly arranged on the inner wall of the piston cylinder, and a through hole matched with the movable rod penetrates through the middle of the stopping block. According to the invention, through the matching of the electro-rheological fluid, the first capacitor plate, the second capacitor plate and the piston plate, when the top block is contacted with the piston plate, the electro-rheological fluid is under the action of voltage between the first capacitor plate and the second capacitor plate, and the viscosity of the electro-rheological fluid is changed, so that the hard impact between the limiting block and the stop block is avoided.

Description

Flexible buffer type bumper shock absorber locking equipment

Technical Field

The invention relates to the technical field of shock absorbers, in particular to flexible buffer type shock absorber stopping equipment.

Background

Generally reciprocate through the piston in it in traditional bumper shock absorber to drive the fluid in the bumper shock absorber intracavity and just flow into another intracavity through different holes from a chamber repeatedly, the friction between pore wall and fluid and the internal friction between the fluid molecule form the damping force to vibrations this moment, thereby the vibrations energy of buffering car, detent is the structure of avoiding the piston to surpass the stroke and lead to the piston to damage.

The traditional stopping structure is generally an annular structure welded on the inner wall of a piston cylinder, the piston and the annular structure are in rigid impact during stopping, the impact force of the structure during stopping is large, so that the structure is seriously abraded, the service life is short, and the structure needs to be frequently replaced.

Disclosure of Invention

The invention aims to solve the defect that the service life of the traditional shock absorber stopping equipment is short in the prior art, and provides flexible buffer type shock absorber stopping equipment.

In order to achieve the purpose, the invention adopts the following technical scheme:

a flexible buffer type damper stopping device comprises a piston cylinder and a movable rod inserted in the piston cylinder in a sliding mode, wherein a limiting block is arranged on the movable rod in an interference fit mode, the limiting block is connected with the inner wall of the piston cylinder in a sliding mode, a stopping block is horizontally and fixedly arranged on the inner wall of the piston cylinder, a through hole matched with the movable rod penetrates through the middle of the stopping block, a plurality of jacking blocks are uniformly and vertically and fixedly connected with the lower end face of the limiting block, a plurality of liquid storage tanks corresponding to the jacking blocks are uniformly arranged on the upper end face of the stopping block, a limiting ring is fixedly connected to the groove opening of each liquid storage tank, a piston plate is connected in the liquid storage tanks in a sealing and sliding mode and is located below the limiting rings, electrorheological fluid is filled in a sealing space formed by the lower end face of each piston plate and the corresponding liquid storage tanks, and a first capacitor plate is arranged on each piston, and each liquid storage tank bottom groove wall is provided with a second capacitor plate corresponding to the first capacitor plate, and the first capacitor plate and the second capacitor plate corresponding to the positions are coupled with the travel switch of the movable rod through wires.

Preferably, each piston plate lateral wall all has seted up the ring channel coaxially, every all the cover is equipped with the sealing washer in the ring channel.

Preferably, the bottom tank wall of each liquid storage tank is an elastic surface.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the matching of the electro-rheological fluid, the first capacitor plate, the second capacitor plate and the piston plate, when the top block is contacted with the piston plate, the electro-rheological fluid is under the action of voltage between the first capacitor plate and the second capacitor plate, and the viscosity of the electro-rheological fluid is changed, so that the hard impact between the limiting block and the stop block is avoided.

Drawings

FIG. 1 is a schematic structural view of a flexible buffer type damper stopping device according to the present invention;

fig. 2 is an enlarged view of a point a in fig. 1.

In the figure: the device comprises a piston cylinder 1, a movable rod 2, a limiting block 3, a top block 4, a stop block 5, a through hole 6, a liquid storage tank 7, a limiting ring 8, a piston plate 9, an annular groove 10, a sealing ring 11, a first capacitor plate 12 and a second capacitor plate 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, a flexible buffer type damper stopper device comprises a piston cylinder 1 and a movable rod 2 slidably inserted in the piston cylinder 1, wherein the movable rod 2 is in interference fit with a stopper 3, the stopper 3 is slidably connected with the inner wall of the piston cylinder 1, the inner wall of the piston cylinder 1 is horizontally and fixedly provided with a stopper 5, the middle part of the stopper 5 is provided with a through hole 6 matched with the movable rod 2 in a penetrating manner, the lower end surface of the stopper 3 is uniformly and vertically fixedly connected with a plurality of top blocks 4, the upper end surface of the stopper 5 is uniformly provided with a plurality of liquid storage tanks 7 corresponding to the top blocks 4, the groove opening of each liquid storage tank 7 is fixedly connected with a stopper ring 8, each liquid storage tank 7 is internally and hermetically and slidably connected with a piston plate 9, each piston plate 9 is positioned below the stopper ring 8, the stopper ring 8 is used for limiting the upper limit position of the piston plate 9, thereby avoiding the separation of the piston plate, an electrorheological fluid (the electrorheological fluid is composed of solid particles with high dielectric constant uniformly dispersed in insulating oil with low dielectric constant, the electrorheological fluid is a suspension liquid under normal conditions, it can be changed from liquid to solid under the action of electric field, when the intensity of external electric field is greatly lower than a certain critical value, the electrorheological fluid is in liquid state, and when the intensity of electric field is greatly higher than the critical value, it is changed into solid state, and near the critical value of electric field, the viscosity of the suspension liquid is increased with the increase of electric field intensity), each piston plate 9 is provided with a first capacitor plate 12, the bottom wall of each reservoir 7 is provided with a second capacitor plate 13 corresponding to the first capacitor plate 12, the first capacitor plate 12 and the second capacitor plate 13 corresponding to each other are coupled with the stroke switch of the movable rod 2 through wires, the stop block 5 and the piston plate 9 are made of insulating materials.

According to the invention, the side wall of each piston plate 9 is coaxially provided with an annular groove 10, a sealing ring 11 made of rubber materials is sleeved in each annular groove 10, and the bottom groove wall of each liquid storage tank 7 is an elastic surface, so that when the piston plate 9 extrudes the electrorheological fluid, the bottom groove wall of the liquid storage tank 7 can deform, and the piston plate 9 can move downwards, and thus the voltage between the first capacitance plate 12 and the second capacitance plate 13 is changed, and the viscosity of the electrorheological fluid is changed accordingly.

The invention can be illustrated by the following operating modes: when the shock absorber works, the movable rod 2 moves downwards, the movable rod 2 triggers the travel switch, the power supply is switched on, so that voltage is generated between the first capacitor plate 12 and the second capacitor plate 13, the viscosity of electrorheological fluid in the fluid storage tank 7 is increased due to the temperature plugging phenomenon, when the plurality of top blocks 4 abut against the piston plate 9, the piston plate 9 pushes the electrorheological fluid to deform the fluid storage tank 7, and further the hard impact between the limiting block 3 and the stop block 5 can be avoided, so that the abrasion degree of the liquid storage tank 7 is large, and the service life of the liquid storage tank is prolonged;

it is worth noting that, as the piston plate 9 extrudes the electrorheological fluid, the reservoir 7 deforms, the distance between the first capacitor plate 12 and the second capacitor plate 13 becomes small, the capacitance between the first capacitor plate 12 and the second capacitor plate 13 is kept constant, when the impact pressure is large, the distance of the downward movement of the top block 4 is also large, the voltage between the first capacitor plate 12 and the second capacitor plate 13 is increased, so that the viscosity of the electrorheological fluid is increased, the automatic adjustment of the viscosity can be carried out according to the punching forces of different sizes in real time, further, the limiting block 3 and the stopping block 5 can be fully buffered, and the piston plate is prevented from being greatly abraded.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The flexible buffer type damper stopping equipment comprises a piston cylinder (1) and a movable rod (2) inserted in the piston cylinder (1) in a sliding manner, and is characterized in that the movable rod (2) is provided with a limiting block (3) in an interference fit manner, the limiting block (3) is connected with the inner wall of the piston cylinder (1) in a sliding manner, the inner wall of the piston cylinder (1) is horizontally and fixedly provided with a stopping block (5), the middle part of the stopping block (5) is penetrated and provided with a through hole (6) matched with the movable rod (2), the lower end face of the limiting block (3) is uniformly and vertically fixedly connected with a plurality of jacking blocks (4), the upper end face of the stopping block (5) is uniformly provided with a plurality of liquid storage tanks (7) corresponding to the jacking blocks (4), each liquid storage tank (7) is fixedly connected with a limiting ring (8) at the notch part, each liquid storage tank (7) is internally and hermetically and slidably connected with, and every piston plate (9) all is located spacing ring (8) below, every piston plate (9) lower terminal surface all is filled with electrorheological fluids in the confined space who constitutes with corresponding reservoir (7), every all be equipped with first capacitor plate (12) on piston plate (9), every reservoir (7) bottom cell wall department all is equipped with second capacitor plate (13) that correspond with first capacitor plate (12), and the position corresponds first capacitor plate (12) all pass through the travel switch coupling of wire with movable rod (2) with second capacitor plate (13).

2. The flexible buffer type shock absorber stop device according to claim 1, wherein each piston plate (9) has a side wall coaxially opened with an annular groove (10), and each annular groove (10) is internally sleeved with a sealing ring (11).

3. A flexible buffer-type shock absorber stop device according to claim 1, characterized in that the bottom tank wall of each reservoir (7) is an elastic surface.