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Piezoelectric hydraulic linear motor

A linear motor and hydraulic technology, applied in piezoelectric devices/electrostrictive devices, liquid varactor machines, fluid pressure actuation devices, etc. problems, to achieve the effect of novel structure, large driving force and movement stroke, and good sealing performance

Inactive Publication Date: 2009-01-28
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a piezoelectric hydraulic linear motor to solve the problem that the output force and displacement of the piezoelectric driver are small and cannot meet the actual needs

Method used

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  • Piezoelectric hydraulic linear motor
  • Piezoelectric hydraulic linear motor
  • Piezoelectric hydraulic linear motor

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] The inlet of the piezoelectric pump is connected to the accumulator through a pipeline, and the accumulator is also connected to a reversing valve through a pipeline, and the reversing valve is connected to the outlet of the piezoelectric pump through a pipeline, and the reversing valve is also connected through a pipeline The road is connected with the cavity of the hydraulic cylinder; the reversing valve adopts a 3-position 4-way valve.

[0018] Such as figure 1 As shown, the piezoelectric pump 1, the reversing valve 2, the hydraulic cylinder 3 and the accumulator 4 are connected to form a closed system through pipelines; the accumulator is connected to the inlet of the piezoelectric pump, and the reversing valve It is a 3-position 4-way valve; when the piezoelectric pump 1 is started, the movement state of the hydraulic cylinder piston 301 is changed by adjusting the position of the reversing valve 3: when the reversing valve 2 is cut off (at position 202), The flui...

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PUM

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Abstract

The invention relates to a piezoelectric hydraulic linear motor which pertains to the field of mechanical-electrical-hydraulic integration. An inlet of a piezoelectric pump is connected with an accumulator by a pipeline; the accumulator is also connected with a reversing valve by the pipeline; the reversing valve is connected with an outlet of the piezoelectric pump by the pipeline; the reversing valve is also connected with a cavity body of a hydraulic cylinder. The piezoelectric hydraulic linear motor has the advantages of novel structure, being capable of effectively converting the micro-amplitude reciprocating vibration of piezoelectric ceramic to the micro liner motion of a piston of the hydraulic cylinder by utilizing fluid media to transmit power, obtaining relatively large driving power and motion displacement and realizing precise driving and control by a method of accumulating a liquid drop for one time; meanwhile, the piezoelectric hydraulic motor has simple structure and control, small volume and good sealing property and can be applied to marking parts.

Description

technical field [0001] The invention belongs to the field of electromechanical-hydraulic integration, and specifically relates to a piezoelectric hydraulic driver which utilizes a piezoelectric pump to drive liquid circulation and converts high-frequency and micro-reciprocating vibrations of piezoelectric ceramics into regular macroscopic linear motion of hydraulic cylinder pistons, namely piezoelectric actuators. Hydraulic linear motor. Background technique [0002] Piezoelectric ceramics have the characteristics of simple structure, fast response, no electromagnetic interference, low energy consumption, and easy control. They are widely used in aerospace, machinery, optical engineering, biomedicine, and fluid drive and control. At present, there are many forms of piezoelectric actuators that use piezoelectric ceramics as power components to achieve force and linear displacement output / control, which can be simply classified into three categories: 1) piezoelectric actuators...

Claims

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Application Information

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IPC IPC(8): F15B15/18F04B43/00H01L41/08
Inventor 阚君武唐可洪高俊峰
Owner JILIN UNIV
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