CN212177743U

CN212177743U - Oil-gas separation double-cylinder shock absorber with auxiliary cylinder

Info

Publication number: CN212177743U
Application number: CN202020496668.0U
Authority: CN
Inventors: 周海东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-29
Filing date: 2020-03-29
Publication date: 2020-12-18
Anticipated expiration: 2030-03-29

Abstract

The utility model discloses an oil-gas separation double-cylinder shock absorber with an auxiliary cylinder, which comprises a main cylinder, a bottom valve component, a piston rod, a piston component, a connecting pipe, an auxiliary cylinder, a floating piston, a press plug and a reset spring, wherein the inner cylinder is arranged in the outer cylinder, a bottom valve component is arranged between the outer cylinder and the inner cylinder, the piston rod and the piston component linked with the piston rod are arranged in the inner cylinder, the outer cylinder is connected with the auxiliary cylinder through the connecting pipe, the floating piston is arranged in the auxiliary cylinder, the press plug is arranged at the lower end of the auxiliary cylinder, the reset spring is arranged between the floating piston and the press plug, the auxiliary cylinder is divided into an upper cavity and a lower cavity by the floating piston, the inner cylinder and the outer cylinder are filled with shock absorber oil and can enter the upper cavity of the auxiliary cylinder through the connecting pipe, and the lower cavity of the auxiliary cylinder is filled with high-pressure buffer gas, the, good heat dissipation, long service life and stable and comfortable vehicle running.

Description

Oil-gas separation double-cylinder shock absorber with auxiliary cylinder

Technical Field

The utility model relates to an automobile shock absorber ware, the oil-gas separation binocular shock absorber ware of a vice section of thick bamboo of a band specifically says so.

Background

It is well known that the quality of the shock absorber directly affects the driving smoothness and safety of the automobile. At present, the shock absorber used in common cars is basically a hydraulic shock absorber, and the principle is that when the suspension and the axle do reciprocating relative motion and the piston reciprocates in the working cylinder, the oil in the inner cylinder of the shock absorber repeatedly flows from one inner cavity to the other through the hole, and at the moment, the friction between the hole wall and the oil and the friction in the liquid molecule form damping force, so that the vibration energy of the car body and the car frame is converted into heat energy and absorbed by the oil, and is emitted to the atmosphere through the outer cylinder of the shock absorber. Because the piston rod occupies a part of the volume of the inner cylinder when extending into the cylinder body, the traditional shock absorber cylinder body cannot be completely filled with shock absorber oil. When the piston rod is completely extended out, negative pressure cannot be formed in the cylinder body, so that a part of space needs to be reserved between the outer cylinder and the inner cylinder of the traditional shock absorber to counteract the volume change in the whole cylinder body caused by the reciprocating motion of the piston rod. In order to achieve a better using effect and avoid negative pressure possibly caused when a piston rod extends out, most of shock absorbers are filled with low-pressure nitrogen of 0.4-0.8MPa at present, the shock absorbers inevitably lose oil in the using process, and oil in a cylinder body is less and less, so that when a vehicle jolts frequently and jolts greatly, the oil in a lower cavity of a piston is not compensated timely, the cylinder body is very easy to generate vacuum, and the idle stroke phenomenon in use is caused. In addition, the oil-gas mixture in the cylinder body also easily makes the shock absorber oil produce emulsification, and the oil after the emulsification produces the noise easily and then causes the shock absorber abnormal sound when passing through the valve block, seriously influences the result of use of shock absorber.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect and not enough of background art, provide a shock attenuation is effectual and reduce the noise of bumper shock absorber, improves the oil-gas separation binocular bumper shock absorber of taking the auxiliary cylinder of travelling comfort.

In order to achieve the purpose, the technical scheme of the utility model is that, the oil-gas separation double-cylinder shock absorber of taking auxiliary cylinder includes the main cylinder that urceolus and inner tube constitute, bottom valve subassembly, the piston rod, piston assembly, the connecting pipe, the auxiliary cylinder, floating piston, press stifled, reset spring, be provided with the inner tube in the urceolus, be provided with bottom valve subassembly between urceolus and the inner tube, be provided with the piston rod in the inner tube and with the piston rod piston assembly of linkage, the auxiliary cylinder is being connected through the connecting pipe to the urceolus, be provided with floating piston in the auxiliary cylinder, the lower extreme of auxiliary cylinder is provided with presses stifled, floating piston and pressing are.

The auxiliary cylinder is internally divided into an upper chamber and a lower chamber by a floating piston.

The outer cylinder is communicated with the upper cavity of the auxiliary cylinder through a connecting pipe.

The inner cylinder and the outer cylinder are filled with shock absorber oil and can enter an upper chamber of the auxiliary cylinder through the connecting pipe.

The lower chamber of the secondary cartridge is filled with a high pressure buffer gas, such as nitrogen.

The base valve assembly includes a compression valve and a compensation valve.

The piston assembly includes a reset valve and a flow-through valve.

The utility model discloses when operating condition, piston assembly reciprocating motion in the inner tube that is full of the shock absorber oil, including the shock absorber oil can be constantly, flow between urceolus and the auxiliary cylinder, because in, be full of the shock absorber oil in the urceolus, empty stroke phenomenon can not appear when the shock absorber is at work piston rod reciprocating motion again, the vehicle traveles more steadily comfortable, the auxiliary cylinder has adopted the oil-gas separation structure, reset spring has been set up between floating piston and pressure stifled, and fill into high-pressure buffer gas, can compensate the volume change that piston rod reciprocating motion brought through the reciprocating motion of floating piston in the auxiliary cylinder, and adjust instantaneous damping's size, make shock absorber work steady, the noise at work is little, and furthest eliminates the emulsification phenomenon of shock absorber oil. In addition, because the double-cylinder structure of the main cylinder is reserved, the sizes of restoration damping and compression damping formed by the restoration valve and the compression valve tend to be more reasonable and are better matched with an original vehicle, and the outer cylinder is filled with the shock absorber oil, so that the heat of the shock absorber in the working process is easy to dissipate, and the service life of the shock absorber is prolonged.

The beneficial effects of the utility model are that, empty stroke can not appear in the bumper shock absorber, and work is steady, and the noise is little, and the heat dissipation is good, long service life, the vehicle is gone steadily comfortable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the device comprises an outer cylinder 1, an inner cylinder 2, a bottom valve component 3, a piston rod 4, a piston component 5, a connecting pipe 6, an auxiliary cylinder 7, a floating piston 8, a pressure plug 9, a return spring 10, an upper chamber 11, a lower chamber 12, shock absorber oil 13 and high-pressure buffer gas 14

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the dual-tube shock absorber with oil-gas separation function of the secondary tube of the present invention includes a main tube composed of an outer tube 1 and an inner tube 2, a bottom valve assembly 3, a piston rod 4, a piston assembly 5, a connecting tube 6, a secondary tube 7, a floating piston 8, a pressure plug 9, and a return spring 10, wherein the inner tube 2 is disposed in the outer tube 1, the bottom valve assembly 3 is disposed between the outer tube 1 and the inner tube 2, the piston rod 4 and the piston assembly 5 linked with the piston rod 4 are disposed in the inner tube 2, the outer tube 1 is connected with the secondary tube 7 through the connecting tube 6, the floating piston 8 is disposed in the secondary tube 7, the pressure plug 9 is disposed at the lower end of the secondary tube 7, and the return spring 10.

The inner part of the auxiliary cylinder 7 is divided into an upper chamber 11 and a lower chamber 12 by a floating piston 8.

The outer cylinder 1 is communicated with an upper chamber 11 of the auxiliary cylinder 7 through a connecting pipe 6.

The inner and outer cylinders are filled with shock absorber oil 13 and can enter the upper chamber 11 of the secondary cylinder 7 through the connecting pipe 6.

The lower chamber 12 of the secondary canister 7 is filled with a high pressure buffer gas 14, such as nitrogen.

The base valve assembly 3 includes a compression valve and a compensation valve.

The piston assembly 5 includes a reset valve and a flow-through valve.

The utility model discloses a work like this: when the piston rod 4 is pressed into the inner cylinder 2, the shock absorber oil 13 compressed by the piston assembly 5 flows in the inner cylinder and the outer cylinder and flows to the upper chamber 11 in the auxiliary cylinder 7 through the connecting pipe 6, and the floating piston 8 is pushed to slide downwards; when the piston rod 4 extends out, the shock absorber oil 13 in the upper chamber 11 of the auxiliary cylinder 7 enters the inner cylinder and the outer cylinder through the connecting pipe 6, and the floating piston 8 is pushed upwards under the combined action of the return spring 10 and the high-pressure buffer gas 14 to compensate for the change of the volume in the inner cylinder and the outer cylinder. Because the inner and outer cylinders are filled with the shock absorber oil 13, the sizes of the restoration damping and the compression damping formed by the restoration valve and the compression valve tend to be more reasonable, the shock absorber does not have an idle stroke phenomenon when the piston rod 4 reciprocates in work, so that the vehicle runs more stably and comfortably, and the auxiliary cylinder 7 is arranged, and the oil and gas separation structure is adopted, so that the volume change caused by the reciprocating motion of the piston rod 4 can be compensated through the up-and-down floating of the floating piston 8, the size of the instantaneous damping is adjusted, the shock absorber works more stably, the noise is effectively reduced, the emulsification phenomenon of the shock absorber oil 13 is eliminated, the service performance of the shock absorber is obviously improved, and the service life is prolonged. The return spring 10 arranged in the auxiliary cylinder 7 ensures the follow-up property of the floating piston 8, can better ensure that the floating piston 8 flexibly moves along with the flowing of the shock absorber oil 13, and avoids the generation of idle stroke to the maximum extent. The utility model discloses even under the condition of high-pressure buffer gas 14 in case of leaking, still enable floating piston 8 and have better followability, do not influence the performance of bumper shock absorber.

Claims

1. The oil-gas separation double-cylinder shock absorber with the auxiliary cylinder is characterized by comprising a main cylinder, a bottom valve assembly (3), a piston rod (4), a piston assembly (5), a connecting pipe (6), the auxiliary cylinder (7), a floating piston (8), a pressure plug (9) and a reset spring (10), wherein the main cylinder is composed of an outer cylinder (1) and an inner cylinder (2), the inner cylinder (2) is arranged in the outer cylinder (1), the bottom valve assembly (3) is arranged between the outer cylinder (1) and the inner cylinder (2), the piston rod (4) and the piston assembly (5) linked with the piston rod (4) are arranged in the inner cylinder (2), the outer cylinder (1) is connected with the auxiliary cylinder (7) through the connecting pipe (6), the floating piston (8) is arranged in the auxiliary cylinder (7), the pressure plug (9) is arranged at the lower end of the auxiliary cylinder (7), and the reset spring (10) is arranged between.

2. The gas-oil separating dual tube shock absorber with secondary tube according to claim 1, wherein the secondary tube (7) is divided into an upper chamber (11) and a lower chamber (12) by a floating piston (8).

3. The double cylinder shock absorber for oil-gas separation with a sub-cylinder as set forth in claim 1, wherein the outer cylinder (1) communicates with the upper chamber (11) of the sub-cylinder (7) through a connecting pipe (6).

4. The dual-tube shock absorber for oil-gas separation with secondary tube of claim 1, wherein the inner and outer tubes are filled with shock absorber oil (13) and can enter the upper chamber (11) of the secondary tube (7) through the connecting tube (6).

5. The gas-oil separation dual tube shock absorber with a secondary tube as set forth in claim 1, wherein the lower chamber (12) of the secondary tube (7) is filled with a high-pressure buffer gas (14).

6. The gas-oil separating double tube shock absorber with secondary tube of claim 1 wherein the base valve assembly (3) comprises a compression valve and a compensation valve.

7. The split air double tube shock absorber with secondary tube of claim 1, wherein the piston assembly (5) comprises a reset valve and a flow valve.