Integrated self-powered hydraulic damper

Abstract

The invention relates to an integrated type self-powered hydraulic damper, belonging to a vibration absorber, wherein two cylinder bodies, namely an internal cylinder body and an external cylinder body are arranged on a main body bottom plate for the formation of an inner cavity and an outer cavity; a piston ring is arranged in the outer cavity; two groups of energy harvesters is respectively connected in a compression way between the piston ring and an upper cover, as well as between the piston ring and the bottom plate; a piston partitions the inner cavity into an upper inner cavity and a lower inner cavity; a driver sheathed in the inner cavity of a piston rod causes a spool and a belleville spring to be orderly connected into the piston in the compression way; valve holes communicated with the upper inner cavity and the lower inner cavity are formed in the piston; the valve holes are communicated through a circular groove in the spool; and each group of the energy harvesters and the driver are connected with an electric control unit through various conductor groups. The integrated type self-powered hydraulic damper has the advantages that the longitudinal size is small, the structure is simple and the damper is applicable for occasions in which the stroke is great and the longitudinal installation space is restricted; in the nonworking state, the energy harvesters are not affected by fluid pressure; moreover, the longer driver can be adopted for damping adjustment; and therefore, the power generation capability and the adjustment capability are strong.

Description

technical field [0001] The invention belongs to a shock absorber applied in the technical field of vibration control, and in particular relates to an integrated self-powered hydraulic damper. Background technique [0002] Hydraulic dampers have been widely used in the field of vibration control of vehicles and mechanical equipment. The early passive hydraulic dampers were simple in structure, low in cost, and relatively mature in technology, but because the damping was not adjustable, their damping effect and environmental adaptability were poor, and they were not suitable for some occasions that required better vibration control effects, such as automobile engines. And frame suspension, vibration reduction of large precision instruments and equipment, etc. Therefore, people have proposed active and semi-active adjustable hydraulic dampers, that is, active adjustable dampers that use motor-driven hydraulic pumps to provide power and are controlled by electromagnetic reversi...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an integrated self-powered hydraulic damper to solve the existing piezoelectric hydraulic damper and piezoelectric stack self-powered adjustable hydraulic damper that require a large pump station for driving and multiple solenoid valves. For joint control, sensors are required to detect the vibration state, and continuous external energy supply is required

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