Hydro-pneumatic spring for amphibious vehicles and hydraulic regulating device for hydro-pneumatic spring for amphibious vehicle

Abstract

The invention discloses a hydro-pneumatic spring for amphibious vehicles and a hydraulic regulating device for the hydro-pneumatic spring for amphibious vehicles, and particularly relates to a hydro-pneumatic spring allowing for wheel release on land, wheel retracting in water, vehicle height control, and automatic change of pressure and supporting force for the vehicles. The hydro-pneumatic spring uses an inert gas as an elastic medium and oil as a force transfer medium and comprises a gas spring and a hydraulic cylinder servicing as a shock absorber. A hydro-pneumatic separate spring consists of a gas chamber, an oil chamber and a floating piston. Oil is sucked in from a piston rod and enters the oil chamber B through a damping valve to push a piston so that the gas is compressed or expanded, and elastic action is achieved. The shock absorber consists of a cylinder barrel, a piston and the damping valve. Under the action of the damping valve, energy can be attenuated effectively, the shock absorber is rebalanced, and shock absorption is achieved. In addition, oil intake of an oil inlet can be regulated to quickly and accurately change position of the piston, so that extension length of the piston rod is changed to change wheel state, and retracting and release of wheels and range adjustment of vehicle height are achieved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic machinery, and relates to an oil-pneumatic spring for an amphibious vehicle and its hydraulic adjustment device, in particular to a device that can realize the wheels being put down on land, stowed in water, controlling the height of the vehicle body, and automatically changing the pressure. And the oil-pneumatic spring of supporting force and its hydraulic adjustment device. It is mainly used to change the wheel position, adjust the height of the vehicle body and attenuate the vibration of the vehicle body to improve the safety and smoothness of driving on land and reduce the action resistance of driving in water. Background technique [0002] In the prior art, the suspension is the assembly of all force transmission connection devices between the vehicle frame (or load-bearing body) and the axle (or wheel). The general suspension system is composed of elastic elements, damping elements and gu...

AI Technical Summary

Problems solved by technology

[0005] 2. Although it has good variable stiffness and variable damping characteristics, it cannot realize the adjustment of vehicle body height or the adjustment speed is too slow and the adjustment range is too small, and most of them are improved oil-gas springs with double bars, which have complex structures and high sealing requirements

For example, the application number is CN201110314016.6, and the title of the invention is "a vehicle oil-pneumatic spring with adjustable stiffness and damping". By adding additional volume chambers, hydraulic control valves and air control valves, the adjustable range of stiffness and damping is improved; through the air control valve Control the amount of gas to adjust the height of the vehicle body, which is more complex and requires high control

[0006] 3. Even if it has both functions at the same time, there are too many internal components, complex structure, high cost, high energy consumption, and general reliability

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