Retractable hydropneumatic suspension system and control method for wheeled amphibious vehicle

Abstract

The invention discloses a wheel-type amphibious vehicle retractable type oil gas suspension system and a control method of the system. Except for achieving of buffer vibration damping function, the double-direction driving motion is achieved, and wheel retractable functions and vehicle body height adjusting functions are achieved. According to the system, a hydraulic power module is connected to suspension oil gas spring modules through an oil supply channel and an oil returning channel; the hydraulic power module provides hydraulic energy for the suspension oil gas spring modules; each suspension oil gas spring module comprises a working oil cylinder, an energy accumulator, a first damping valve assembly, a second damping valve assembly and an electromagnetic valve set; an upper lug ring of each working oil cylinder is connected with the vehicle body; a lower lug ring of each working oil cylinder is connected to a suspension lower cross arm lug ring support; the first damping valve assemblies are arranged between rodless cavities of the working oil cylinders and the energy accumulators; the second damping valve assemblies are arranged between rod cavities and the rodless cavities of the working oil cylinders; and the electromagnetic valve sets are used for controlling oil liquid for enabling the hydraulic power module to enter and go out of the rod cavities and the rodless cavities of the working oil cylinders and whether the rod cavities and the rodless cavities of the working oil cylinders are communicated or not.

Description

technical field [0001] The invention relates to a vehicle suspension system, in particular to a suspension system for a wheeled amphibious vehicle, which belongs to the field of vehicle engineering. Background technique [0002] Wheeled amphibious vehicles are widely used in military and civilian transportation, emergency rescue and disaster relief, and leisure and entertainment because of their strong mobility in areas where rivers, ditches, and lakes and ponds are densely covered with water networks. [0003] At present, the speed of amphibious vehicles on water is mostly about 10 km / h. An important reason affecting the speed of amphibious vehicles on water is that the wheels immersed in water produce greater navigation resistance. If the wheels of the amphibious vehicle can be lifted up when navigating on water, it can reduce sailing resistance and thus increase speed. [0004] The wheels of the wheeled amphibious vehicle are connected with the vehicle body through a su...

AI Technical Summary

Problems solved by technology

[0007] Since the active movement of ordinary oil and gas springs is only the extension action, it cannot be used to lift the wheels, and it is impossible to realize the wheel retraction function of the amphibious vehicle when sailing on water.

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