PROBLEM TO BE SOLVED: To provide a pump unit which reduces man hours for performance measurement, and to provide a hydraulic actuator.SOLUTION: A pump unit 20 integrally includes: a switching valve 51 which switches oil flow to a first chamber Y1 or a second chamber Y2 of a cylinder device 10 in which the interior is divided into the first chamber Y1 and the second chamber Y2 by a piston 12; an up-blow valve 53 (a first chamber side relief valve) which releases a pressure of a first chamber side passage 71 connected with the first chamber Y1; and a down-blow valve 54 (a second chamber side relief valve) which releases a pressure of a second chamber side passage 72 connected with the second chamber Y2.

    【課題】性能測定の工数を低減することができるポンプ装置及び液圧アクチュエータを提供する。【解決手段】ポンプ装置20が、ピストン12によって内部が第1室Y1と第2室Y2とに区画されたシリンダ装置10の第1室Y1又は第2室Y2にオイルの流れを切り替える切替弁51と、第1室Y1に接続される第1室側流路71の圧力を逃がすアップブローバルブ53(第1室側リリーフ弁)と、第2室Y2に接続される第2室側流路72の圧力を逃がすダウンブローバルブ54(第2室側リリーフ弁)とを一体的に備える。【選択図】図5


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    Title :

    PUMP UNIT AND HYDRAULIC ACTUATOR


    Additional title:

    ポンプ装置及び液圧アクチュエータ


    Contributors:

    Publication date :

    2015-10-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS , Rotationskolben- oder Schwenkkolbenmaschinen [Kraft- und Arbeitsmaschinen] für Flüssigkeiten / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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