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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  • Abstract
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  • Application Information

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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 wo

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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Example Embodiment

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

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Abstract

The invention discloses an oil-pneumatic suspension system capable of realizing quasi-zero stiffness at an equilibrium position. The suspension system consists of three oil cylinders, an accumulator and three solenoid valves. One end of the three oil cylinders is hinged with the axle, the other end is hinged with the vehicle frame, and the two horizontal oil cylinders are symmetrically arranged relative to the vertical oil cylinders. The accumulator is respectively connected with the large chambers of the three oil cylinders through electromagnetic valves and pipelines, and the small chambers of the three oil cylinders can communicate with the atmosphere or directly communicate with the large chambers. The suspension system realizes oil filling, oil draining, and rigidity-elasticity conversion functions through three solenoid valves, and combines the installation position of the oil cylinder to achieve quasi-zero stiffness characteristics near the equilibrium position by reasonably matching the size parameters of the large and small chambers of the vertical oil cylinder . This system is a passive oil-air suspension system with low cost and high safety factor.

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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