Double-piston electro-rheological shock absorber

An electrorheological and shock absorber technology, applied in shock absorbers, gas-liquid shock absorbers, shock absorbers, etc., can solve the problems of poor heat dissipation, unsolved electrorheological fluid precipitation problems, complex structures, etc. The effect of good heat dissipation, safe, stable and reliable power supply operation and large spacing

Active Publication Date: 2015-05-13
JILIN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there are structural designs for electrorheological shock absorbers, but the general structure is complex, the heat dissipation is not good, and most of them load the voltage on the piston rod, and the power supply method has problems such as instability and unreliability, and the existing current The problem of fluid change and precipitation has not been solved

Method used

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  • Double-piston electro-rheological shock absorber
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  • Double-piston electro-rheological shock absorber

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Embodiment Construction

[0016] see Figure 1 to Figure 3 , double-piston electrorheological shock absorber, including inner cylinder 4, outer cylinder 5, annular piston 7, positive plate 3, lower base 2, upper end cover 12, dust cover 22, positioning insulating element 11, piston 6 and piston rod 8 . After the inner cylinder 4 and the outer cylinder 5 are assembled, they are positioned by the positioning insulating element 11, and the dust cover 22 is covered outside the outer cylinder 5, and is fixedly connected with the upper end of the piston rod. The lower end of the inner cylinder 4 is fixedly connected with the positive plate 3, the upper end is connected with the positioning insulating element 11, and the lower end of the outer cylinder 5 is connected with the lower base 2 through threads, and the size of the tapered gap can be adjusted to suit the requirements of different vehicle models for the shock absorber. The upper end of the outer cylinder 5 and the upper end cover 12 are also threade...

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Abstract

The invention discloses a double-piston electro-rheological shock absorber which has a continuously adjustable damping function and is mainly used for semi-active control over a vehicle suspension system. The double-piston electro-rheological shock absorber mainly comprises a piston, an annular piston, an inner barrel, an outer barrel, a general valve, a tapered gap, a plenum chamber and a positive plate, the inner barrel is completely divided into an upper working cavity and a lower working cavity through the piston, the upper working cavity is filled with general hydraulic oil, the hydraulic oil flows between the inner barrel and an annular cavity through the general valve, the lower working cavity is filled with electro-rheological fluid, the electro-rheological fluid flows between the inner barrel and the annular cavity through the tapered gap, and the optimal damping force needed for the shock absorber is generated by the tapered gap and the general valve. The shock absorber is provided with a floating piston, so that changes, caused by a piston rod in the moving process, of the volume of the oil in the upper working cavity are made up for in the working process of the shock absorber; the bottom of the shock absorber is provided with the tapered gap, controllable damping force is provided, and meanwhile sediment of the electro-rheological fluid can be rapidly removed in the working process.

Description

technical field [0001] The invention relates to a shock absorber, in particular to a double-piston electrorheological shock absorber, which is mainly used for semi-active control of wheeled vehicles and also for other shock absorbing systems. Background technique [0002] The traditional automobile suspension system is a passive damping system, the performance of the elastic element and the shock absorber of this system is not adjustable, especially the damping of the shock absorber is not adjustable. Its main disadvantage is that the damping provided by the shock absorber is only ideal for a certain working condition, and the ideal damping and vibration reduction effect cannot be achieved for working conditions far away from the specified working conditions. Obviously, the most ideal is the so-called active or semi-active suspension system. At this time, the performance of its elastic elements and damping elements can be adjusted and controlled, that is, it can change the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/06F16F9/43F16F9/53
CPCF16F9/06F16F9/43F16F9/532F16F9/3242F16F9/3257
Inventor 王云成孙民王建华谢飞王猛周建鹏
Owner JILIN UNIV
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