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Hydropneumatic suspension system capable of realizing quasi-zero stiffness in equilibrium position

An oil-gas suspension, quasi-zero stiffness technology, applied in the field of suspension systems, can solve problems such as poor ride comfort, achieve the effects of improving ride comfort, realizing rigidity and elasticity conversion, and easy installation

Pending Publication Date: 2018-02-16
JILIN UNIV
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Problems solved by technology

[0003] The purpose of the patent of this invention is to solve the problem of poor ride comfort of vehicles under complex working conditions, and to provide a new type of oil-pneumatic suspension system with relatively low cost and easy installation

Method used

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  • Hydropneumatic suspension system capable of realizing quasi-zero stiffness in equilibrium position
  • Hydropneumatic suspension system capable of realizing quasi-zero stiffness in equilibrium position
  • Hydropneumatic suspension system capable of realizing quasi-zero stiffness in equilibrium position

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Embodiment Construction

[0021] see figure 1 and figure 2 As shown, the present invention includes vehicle frame 1, vehicle axle 2, mounting bracket 3, vertical oil cylinder 4, horizontal oil cylinder 5, connecting oil pipe 6, first solenoid valve 7, second solenoid valve 8, third solenoid valve 9, energy storage device 10, first relief valve 11, second relief valve 12, stop valve 13, oil tank 14, damping hole 15, hydraulic pump 16 and filter 17; each axle 2 contains two sets of systems, left and right There is a system. In each oil-pneumatic suspension system, the vertical oil cylinder 4 is vertically placed to mainly bear the vertical load of the vehicle frame. One end of the vertical oil cylinder 4 is hinged to the axle 2 through the mounting bracket 3, and the other end of the vertical oil cylinder 4 is connected to The frame 1 is hinged; the two horizontal oil cylinders 5 are symmetrically arranged relative to the vertical oil cylinder 4; the two horizontal oil cylinders 7 are hinged with the ...

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Abstract

The invention discloses a hydropneumatic suspension system capable of realizing quasi-zero stiffness in an equilibrium position. The suspension system comprises three oil cylinders, one energy accumulator and three solenoid valves, wherein one end of the three oil cylinders is hinged to the axle of a vehicle and the other end is hinged to the frame of the vehicle. The two horizontal oil cylindersare symmetrically arranged with respect to the vertical oil cylinder. The energy accumulator is connected with the big cavities of the three oil cylinders through the solenoid valves and a pipeline, and the small cavities of the three oil cylinders can communicate with the atmosphere and directly communicate with the big cavities. According to the suspension system disclosed by the invention, theshifting functions between oil filling and oil draining as well as between rigidness and elasticity are respectively realized through the three solenoid valves; and combined with the mounting positions of the oil cylinders, by reasonably matching the dimension parameters of the big cavity and the small cavity of the vertical oil cylinder, the characteristic of quasi-zero stiffness near the equilibrium position is realized. The system is a passive hydropneumatic suspension system, is low in cost and is high in safety factors.

Description

technical field [0001] The invention relates to a suspension system, in particular to an oil-pneumatic suspension system capable of realizing quasi-zero stiffness at an equilibrium position. Background technique [0002] With the development of vehicle technology, the hydropneumatic suspension system has been widely used due to its nonlinear characteristics. The smaller the stiffness of the suspension, the more obvious the damping effect, but the larger the suspension stroke. However, the current oil-pneumatic suspension has a relatively high stiffness at the balance position of the vehicle, which affects its damping performance. Contents of the invention [0003] The purpose of the patent of the present invention is to solve the problem of poor driving comfort of the vehicle under complex working conditions, and to provide a new oil-pneumatic suspension system with relatively low cost and easy installation. The invention designs a suspension so that the stiffness at the...

Claims

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Application Information

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IPC IPC(8): B60G11/26B60G11/30B60G9/00
CPCB60G9/00B60G11/265B60G11/30B60G2200/30B60G2202/154
Inventor 张小江闫振华
Owner JILIN UNIV
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