CN2333839Y

CN2333839Y - Bidirectional acting air cylinder shock-absorber

Info

Publication number: CN2333839Y
Application number: CN 98215953
Authority: CN
Inventors: 陈贤武
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-29
Filing date: 1998-06-29
Publication date: 1999-08-18
Anticipated expiration: 2008-06-29

Abstract

The utility model relates to an elastic element in a hanger bracket of a vehicle running system, particularly a bidirectional acting air cylinder shock-absorber which is used as the elastic connection between a frame and wheels and the elastic connection between a vehicle body and a vehicle bridge. The shock-absorber comprises cylinders 9, 3, 11 and 10. The utility model is characterized in that the cylinder (9) is divided into a compressing air chamber (14) and a stretching air chamber (15) by a piston (3). The cylinder arranged on the compressing air chamber (14) is provided with compressing air inlet one-way valves 16, 17 and 18. The cylinder arranged on the stretching air chamber is provided with stretching air inlet one-way valves 16, 17 and 18.

Description

Two-way function inflator formula vibration damper

The utility model relates to the automobile running system; elastic element in the suspension; the vibration damper of between vehicle frame and vehicle body and wheel or vehicle bridge, getting in touch specifically as elasticity, be applicable to truck suspension in elastic element install side by side, strengthen protection elastic element (leaf spring).

In the prior art, the elastic element in the truck suspension all is leaf springs, does not all have special vibration damper.At present, the pavement quality in China small towns is generally relatively poor, and truck is to penetrate everywhere.When truck is run at high speed on this bad road surface, the impact vertical reaction that the road surface acts on wheel be toward will causing the fatigue of leaf spring above the limit of elasticity of leaf spring, even rupture.The tool statistics, the fracture of truck leaf spring is so the Zhang, a state in the Zhou Dywnasty rate accounts for 10%～20% of total event Zhang, a state in the Zhou Dywnasty rate, and 1 year needs of the truck that travels on the road surface, small towns are for a long time changed two leaf springs.The vibration damper of Chu Xianing all is custom-designed for limousine in the market, mainly contains hydraulic shock absorber and inflatable vibration damper, and the former has relatively high expectations to oil, after need to attach specially an air vesicle, especially the complex structure of these two kinds of vibration dampers, the cost height is difficult to use in the truck.

In view of there are above-mentioned many deficiencies in prior art, the purpose of this utility model is to disclose a kind of two-way function inflator formula vibration damper, and this vibration damper has simple in structure, and damping force acts on the advantage that the impact vertical reaction of wheel increases with the road surface.

The utility model realizes that the technical solution of above-mentioned purpose comprises a cylinder, it is characterized in that piston is divided into cylinder barrel compression air chamber and upholds air chamber, the cylinder barrel of compression air chamber is provided with the compress inlet air one-way valve, and the cylinder barrel of upholding air chamber is provided with the extension breather check valve.When automotive wheel rolled on projection or rolls out pit, wheel was near vehicle body, vibration damper by compression, compression air chamber reduces, uphold air chamber and increase since compression air chamber reduce to compress the damping force that air in it just causes the suspension compresses motion; When wheel rolled into pit or roll from projection, the relative vehicle body of wheel was removed, the vibration damper tension, compression air chamber increases, uphold air chamber and reduce since uphold air chamber reduce to compress the damping force that air in it just causes the suspension stretching exercise.

Above-mentioned technical solution of the present utility model has following outstanding advantage and effect than prior art:

1. simple in structure, honest and clean at the bottom of the cost (every cost about 100 yuan), it is also very convenient to keep in repair;

2. Elastic medium is air, and is inexhaustible, and air dielectric can not corrode component in the cylinder yet;

3. the road surface acts on the also increase thereupon of impact vertical reaction increase damping force of wheel;

4. no matter be compressive force or expansion force when surpassing design limit, the vacuum that causes compression air chamber or uphold air chamber follows the string, compress inlet air one-way valve or uphold breather check valve and can open additional air by nature.

Below in conjunction with drawings and Examples the utility model is explained in further detail,, grasps better and implement technological means of the present utility model so that the public fully understands technical solution described in the utility model.

Description of drawings:

Fig. 1 is the structural representation of a most preferred embodiment of the present utility model;

Fig. 2 is an assembling exploded view embodiment illustrated in fig. 1;

Fig. 3 is a local A enlarged view among Fig. 2;

Fig. 4 is installed in the user mode figure at truck front-wheel place for two-way function inflator formula vibration damper described in the utility model;

Fig. 5 is installed in the user mode figure at truck trailing wheel place for two-way function inflator formula vibration damper described in the utility model;

Embodiment:

Referring to Fig. 1, an important additional technical feature of two-way function inflator formula vibration damper described in the utility model is that the suction port of described compress inlet air one-way valve and extension breather check valve is communicated with by three-way pipe 19, compression air chamber 14 and extension air chamber 15 internal pressure balances also can reduce by a cover sealing device simultaneously when its purpose was to guarantee to inflate in advance.

Referring to Fig. 1, the cylinder of two-way function inflator formula vibration damper described in the utility model mainly is made up of cylinder barrel 9, piston 11, cylinder cap 3, piston rod 10; Described compress inlet air one-way valve and extension breather check valve are formed by valve body 16, steel ball 17, spring 18.

Referring to Fig. 3, the assembly process of two-way function inflator formula vibration damper described in the utility model can be divided following four steps:

One. gland 1 and seal ring 2 are put into the last set pit of cylinder cap 3, connect with socket head screw 5, in the tool withdrawal groove of the cylinder cap of then " 0 " shape seal ring 4 being packed into;

Two. earlier dust-proof cover 13 is enclosed within on the piston rod 10, the cylinder cap assembly that step 1 is assembled is enclosed within on the piston rod 10 again, pad 6 and " 0 " shape seal ring 7 are sleeved on the top of piston rod 10, by nut 8 lockings, then two seal rings 12 are contained in respectively in the two seals groove on the piston 11;

Three. the assembly that step 1 and two is installed inserts in the cylinder barrel 9, cylinder cap 3 is screwed in the cylinder barrel 9 again;

Four. adorn the upper and lower of cylinder barrel 9 respectively upholding breather check valve and compress inlet air one-way valve, refill three-way pipe 19 and get final product.

Two-way function inflator formula vibration damper using method described in the utility model can be referring to Fig. 4 and Fig. 5, as is installed in truck front-wheel place, is about to described two-way function inflator formula vibration damper 20 and is fixed between wheel 21 and the Steel Spring Plate 22; Use if be installed in truck trailing wheel place, then be fixed in the inboard of longitudinal beam 23.

Claims

1. two-way function inflator formula vibration damper, comprise a cylinder (9,3,11,10), it is characterized in that piston (3) is divided into cylinder barrel (9) compression air chamber (14) and upholds air chamber (15), the cylinder barrel of compression air chamber is provided with compress inlet air one-way valve (16,17,18), and the cylinder barrel of upholding air chamber is provided with upholds breather check valve (16,17,19).

2. a kind of two-way function inflator formula vibration damper according to claim 1 is characterized in that the suction port of described compress inlet air one-way valve and extension breather check valve is communicated with by three-way pipe (19).