Hydro-pneumatic spring independent suspension and heavy-duty car adopting the suspension frame

Abstract

Disclosed are an independent suspension of hydro-pneumatic springs and a heavy-duty car employing the suspension. The hydro-pneumatic springs are installed on both sides of the vehicle bridge, respectively connected with the vehicle frame and the wheel group. The invention is characterized in that the independent suspension of hydro-pneumatic springs comprises a hydro-pneumatic spring, an upper fixing portion, a lower fixing portion, an upper wishbone component, a lower wishbone component and a limiting and adjusting device, wherein the upper fixing portion comprises an upper support of the hydro-pneumatic spring and an upper lug pivoting at the hydro-pneumatic spring, the lower fixing portion comprises a double wishbone connecting bracket and is fixed on the car frame, one end of the upper wishbone component pivots at the double wishbone connecting bracket, the middle of the upper wishbone component pivots at the lower end of the hydro-pneumatic spring, the other end of the upper wishbone component is connected with the steering knuckle of the wheel group via an upper shaft housing body and an upper main pin, one end of the lower wishbone component pivots at the double wishbone connecting bracket and the other end is connected with the steering knuckle of the wheel group via an lower shaft housing body and an lower main pin, the limiting and adjusting device comprises a rubber limiting device and limiting screws which are fixed in different positions of the double wishbone connecting bracket and have the functions of up and down limitation. Heavy-duty cars employing the suspension can efficiently increase vehicle ride comfort, operational stability and alter vehicle height simply and conveniently.

Description

technical field [0001] The invention relates to an automobile independent suspension and a heavy-duty automobile using the suspension, in particular to an oil-gas spring independent suspension for multi-axle heavy-duty automobiles and a heavy-duty automobile using the suspension. Background technique [0002] Existing suspensions of heavy vehicles mostly use leaf springs as non-independent suspensions with elastic elements. The stiffness of the leaf springs is linear, the bias frequency of the car is large, and the height adjustment range of the vehicle frame is small. The oil-pneumatic spring independent suspension device has strong nonlinearity, which can ensure that the car has better ride comfort when driving with no load or full load. By adjusting the amount of oil and gas of the oil and gas spring, the adjustment of the height of the vehicle can be realized conveniently. However, how to use oil-pneumatic springs on heavy-duty vehicles as independent suspension elastic...

AI Technical Summary

Problems solved by technology

[0002] The existing heavy-duty vehicle suspension mostly uses leaf spring as the non-independent suspension of the elastic element. The stiffness of the leaf spring is linear, the bias frequency of the car is large, and the height adjustment range of the frame is small.

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