Oil and gas suspension and mine dump truck

Abstract

The invention relates to an oil-gas suspension and a mining dump truck. Wherein, the oil-pneumatic suspension includes: a cylinder, which is pre-filled with oil and gas; a cylinder bottom, which is arranged at the end of the cylinder; a piston rod, whose first end is movably arranged in the cylinder, and whose second end Located outside the cylinder; the first piston is located in the cylinder and connected to the first end of the piston rod; the second piston is located in the cylinder and is located in the first piston and the cylinder bottom; and an elastic member connecting the second piston and the cylinder bottom. The oil-pneumatic suspension provided by the invention is double-buffered and damped by oil-gas and elastic parts, and has high reliability, which solves the problem that the vehicle cannot run normally under the condition of oil-gas leakage and vibration-damping failure of the oil-pneumatic suspension with single oil-gas damping.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to an oil-gas suspension and a mining dump truck. Background technique [0002] Mining dump truck is a large-scale transportation machinery used in various large-scale open-pit mining areas, water conservancy and hydropower projects, etc., and belongs to off-road vehicles. The road conditions of mining dump trucks are very poor, and the requirements for vehicle comfort, ride comfort and operational stability are relatively high. As the buffer and vibration reduction mechanism of the vehicle, the oil-pneumatic suspension is the main component connecting the axle and the frame. , the reliability of the oil-pneumatic suspension is very important to the reliability and comfort of the vehicle. Furthermore, mining dump trucks are short-wheelbase and extremely heavy vehicles, and there is no corresponding space to install traditional leaf springs for vibration reduction. Oil-pneumatic...

AI Technical Summary

Problems solved by technology

When a mining dump truck encounters potholes or raised obstacles while driving on the road, the piston rod of the oil-pneumatic suspension expands and contracts relatively quickly, and it is prone to direct contact between the piston and the cylinder bottom or the guide sleeve, resulting in frequent expansion and contraction of the piston rod. Seal damage, oil leakage and air leakage

[0004] During the transportation of the vehicle, oil and air leakage of the oil-pneumatic suspension will cause the vibration damping effect of the oil-pneumatic suspension to fail, and the vehicle will not be able to drive; and because the vehicle is far away from the maintenance factory, the cost of on-site maintenance will be greatly increased, and will affect Normal driving of other vehicles, serious safety accidents

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