Oil pressure driving system and gate valve

The invention discloses an oil pressure driving system and a gate valve. The oil pressure driving system is provided with a vacuum actuator, a hydraulic drive unit and a drive unit, and the vacuum actuator is provided with an expansion link capable of expanding towards an object and a force applying...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SAKODA, SEIYA, SUZUKI, MIKIYA, WADA, SHINICHI, ISHIDA, TOMOYA, TOKUHIRA, SHINNOSUKE, TERUI, TAKAAKI, ENDO, JIROU, TSURU, SHUNSUKE, INOUE, HIDEAKI, WADE, TAKUYA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The invention discloses an oil pressure driving system and a gate valve. The oil pressure driving system is provided with a vacuum actuator, a hydraulic drive unit and a drive unit, and the vacuum actuator is provided with an expansion link capable of expanding towards an object and a force applying part applying force to the expansion link in the direction far away from the object. The vacuum actuator drives the telescopic rod by generating a driving force larger than an urging force of the urging member by an operating oil pressure supplied from the oil pressure driving unit. The drive unit is provided with a hydraulic pressure suppression unit for suppressing an increase in hydraulic pressure against the reverse rotation of the imparting motor when the telescopic rod is moved in the direction of approaching the object by the biasing force of the hydraulic pressure biasing member.