JPS5929473U

JPS5929473U - actuator

Info

Publication number: JPS5929473U
Application number: JP12563882U
Authority: JP
Inventors: 正明大野
Original assignee: トキコ株式会社
Priority date: 1982-08-20
Filing date: 1982-08-20
Publication date: 1984-02-23
Also published as: JPH0115970Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案になるアクチュエータの一実施例を開閉
弁に適用してなる弁装置の開弁状態の全体概略構成図、
第２図はその閉弁開始状態の概略構成図、第３図はその
閉弁状態の概略構成図、第４図はその開弁開始状態の概
略構成図である。１・・・・・・弁装置、２・・・・・・アクチュエータ
、３・・・・・・開閉弁、４・・・・・・アクチュエー
タ本体、５・・・・・・シリンダ、６・・・・・・ピス
トン、６ｃ・・・・・・弁体、８・・・・・・油液、９
・・・・・・油圧回路、１１．　１２．　３１・・・・
・・電磁切換弁、１３・・・・・・リザーバ、１５・・
・・・・逆止弁、２１・・・・・・ＩＪ　ＩＪ−フ弁、
２５・・・・・・高圧気体源、２７・・・・・・高圧ガ
スボンベ、３０・・・・・・カッタ。FIG. 1 is an overall schematic configuration diagram of a valve device in an open state in which an embodiment of the actuator according to the present invention is applied to an on-off valve;
FIG. 2 is a schematic diagram of the valve opening state, FIG. 3 is a schematic diagram of the valve closing state, and FIG. 4 is a schematic diagram of the valve opening state. DESCRIPTION OF SYMBOLS 1...Valve device, 2...Actuator, 3...Opening/closing valve, 4...Actuator body, 5...Cylinder, 6... ... Piston, 6c ... Valve body, 8 ... Oil liquid, 9
・・・・・・Hydraulic circuit, 11. 12. 31...
...Solenoid switching valve, 13...Reservoir, 15...
...Check valve, 21...IJ IJ-fu valve,
25... High pressure gas source, 27... High pressure gas cylinder, 30... Cutter.

Claims

[Scope of utility model registration request]

The actuator body includes a cylinder in which a piston is reciprocally fitted to define a pair of cylinder chambers, a pump, a switching valve, and a reservoir. a hydraulic circuit for supplying liquid to one of the pair of cylinder chambers and discharging the other liquid to the suction side of the pump or a reservoir to cause the piston to reciprocate under normal conditions; a high-pressure gas source that discharges and supplies an amount of gas to the predetermined cylinder chamber to cause the piston to slide in a predetermined direction; and a high-pressure gas source that is provided in the actuator body and that causes liquid in a cylinder chamber different from the predetermined cylinder chamber to flow out in the event of an emergency. a relief valve, and between the reservoir and the pump, a check valve that allows liquid to flow only from the reservoir to the suction side of the pump, and a check valve that allows liquid to flow from the discharge side of the pump to the reservoir. An actuator characterized in that it is provided with a relief valve that allows the pressure to exceed a predetermined pressure.