Differential hydraulic damper

Abstract

The invention discloses a differential hydraulic damper and aims at providing an adjustable pressure damper which is stable in damping property, and adjustable in damping coefficient. According to thetechnical scheme, a damping piston changes the volume between a rod damping cavity and a rodless damping cavity to transmit pressure of hydraulic fluid, continuous circulation is carried out to exertreverse acting force, on or off of a one-way check valve is controlled, one-way flowing of hydraulic fluid of the rod damping cavity, the rodless damping cavity and an oil supplementing cavity is achieved, the pressure, the differential volume and the compression ratio in a left cavity and a right cavity of an inner cylinder of the differential cavity can be selectively controlled, meanwhile, through any-time adjusting of an outer adjustable damping oil path formed by an adjustable damping valve rod assembled in the generatrix direction of an outer cylinder and extending into the rod dampingcavity in an inclined manner and a relatively-assembled oil supplementing one-way check valve, in-time oil supplementing is started through hydraulic fluid pressure of the rod damping cavity, flowingof the hydraulic fluid, part of pressure transmission for controlling the damping property and the back and forth vibration running stroke of a piston rod output shaft can be controlled, and the damping effect is achieved.

Description

technical field [0001] The invention relates to a small-hole throttle type hydraulic damper with a linear single-rod differential structure. The damping coefficient can be adjusted by changing the size of the damping hole as required, and the damper can automatically replenish hydraulic fluid. Examples that can be used include aviation, aerospace, automotive, construction, road, bridge, railway and other industries, in mechanical engineering, ground motion vehicles, aircraft control systems, etc. Background technique [0002] When many mechanisms are in mechanical motion, due to the influence of external force, vibration and impact will occur, which will reduce the working efficiency of the mechanical system, affect the service life, and damage the mechanical structure in severe cases. Instability, even resonance occurs, destroying the mechanism. In order to reduce the influence of these phenomena on the mechanism, damping devices that can effectively protect the mechanism...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the shortcomings of the prior art, to solve the problem that the damping force of the hydraulic damper in the prior art is not adjustable and the scope of application is small; the damping force in the stretching and compressing directions is not equal; the damping performance is unstable; the damping can be adjusted The small flow rate of the component is poor; the oil replenishment valve is affected by its opening force, and the oil replenishment is not timely and other technical problems. It provides a stable damping performance, adjustable damping coefficient, equal damping force in the direction of tension and compression, wide application range and good adaptability. Differential structure of differential hydraulic damper with adjustable damping coefficient

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