High pressure oil control variable damping shock absorber

Abstract

The invention discloses a high-pressure oil-control variable damping absorber. The variable damping absorber mainly comprises a piston rod provided with a center hole and an end circular cavity, a piston fixedly connected with the piston rod by a valve core, and a slider movably connected on the outer surface of the valve core. The upper end face inside the slider is limited by the piston rod, the lower part of a slider spring bears against the upper end face of a limiting base of a flow valve, the upper part of the slider spring bears against the lower end face of the upper part of the slider; when the limiting base of the flow valve is exist, the second radial hole of the valve core is closed only until the slider is moved to the lower dead center, and the reliability of a flow valve block is higher at this moment; when the limiting base of the flow valve is not exist, the second radial hole of the valve core and the flow valve block are closed at the same moment, the damping adjustment range is larger; the variable damping absorber is capable of achieving the adjustable damping by using the external high-pressure oil-way, has the advantages of large adjustable range and simple structure, and has the variable damping characteristics by slightly improving on the basis of current passive absorber. Compared with the current damping adjustable absorber, the cost is lower.

Description

technical field [0001] The invention belongs to the technical field of hydraulic damping, and in particular relates to a damper which utilizes an external high-pressure oil circuit to realize adjustable damping. Background technique [0002] Common shock absorbers for vehicle suspensions are provided with extension valves, compression valves, compensation valves and flow valves. When the frame (or load-bearing body) moves relative to the axle, the piston of the shock absorber will reciprocate in the cylinder, and the oil in the working chamber will pass through the valve systems, thereby generating damping force to attenuate the Ground and engine vibration and shock. The size of its damping depends on the elasticity of each valve piece group; once each valve piece group is adjusted and installed, the damping characteristics of each valve part of the shock absorber and the damping performance of the shock absorber are determined, and its The range of adaptation to road cond...

AI Technical Summary

Problems solved by technology

However, in the prior art, most of the above functions are realized by external power supply devices or direct use of stepping motors, which are costly and complex in structure.

In addition, only a few companies can produce high-quality magnetorheological fluids and electrorheological fluids, which are expensive

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