Front suspension oil cylinder for mining vehicle

Abstract

The invention discloses a front suspension oil cylinder for a mining vehicle. The front suspension oil cylinder is arranged between an upper vehicle rack and a lower vehicle rack, and comprises a cylinder body, a cylinder bottom fixed at the tail end of the cylinder body, a piston rod matched with the cylinder body inner wall liquid seal in a sliding manner and a piston, wherein a ring sleeve of the piston is fixed at the tail end of the piston rod; the piston rod is provided with an inner chamber of which one end is closed and communicated with a rodless cylinder cavity of the cylinder body; and a non-return valve and a damping hole for communication of the inner chamber and a rod cylinder cavity of the cylinder body are radially formed at the piston rod near to the piston. According to the invention, in the vehicle moving process, the oil cylinder can repeatedly move up and down by the incentive effect of the road surface to adapt to the conditions of the road surface, so as to achieve the functions of vibration damping and support; and by utilizing the non-return valve and the damping hole formed on the piston rod in the moving process, alternate change of damping in size can be realized to achieve the purpose of guaranteeing the motion stability of the vehicle.

Description

technical field [0001] The invention relates to the technical field of hydraulic cylinders, in particular to a front suspension cylinder for industrial and mining vehicles. Background technique [0002] The loading capacity of industrial and mining vehicles is large, and people have higher and higher requirements for their maneuverability. Their average driving speed, ride comfort, lateral stability, cushioning reliability and ride comfort are several important indicators of their mobility. All are related to the natural vibration characteristics of the body, which is determined by its suspension system. Most of the traditional suspension systems are composed of shock absorbers and coil springs or leaf springs. The stiffness of the springs is a fixed value. In order to ensure the smoothness of driving on different roads, the stiffness of the suspension needs to be soft. The space is large and the mass of the spring is large, which cannot adapt to the lightweight development...

AI Technical Summary

Problems solved by technology

In addition to its strong bearing capacity, the rubber spring suspension also has the advantages of no noise and no maintenance. However, domestic freight trucks are seriously overloaded, and the service life of rubber springs on heavy trucks is much lower than that of foreign countries. Therefore, most of my country's heavy trucks still use steel plates. spring suspension

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