TWI748506B

The present invention relates to a gate valve. The gate valve comprises a valve case, a valve main body, a rotational shaft, a rotational shaft driving unit, a driving valve unit, a valve case force applying unit, a hydraulic pressure driving unit, a hydraulic pressure generating unit, a driving uni...

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
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 present invention relates to a gate valve. The gate valve comprises a valve case, a valve main body, a rotational shaft, a rotational shaft driving unit, a driving valve unit, a valve case force applying unit, a hydraulic pressure driving unit, a hydraulic pressure generating unit, a driving unit, a power source, a first non-excitation operation brake, a second non-excitation operation brake, and a brake operation releasing unit releasing operation of the first and second non-excitation operation brakes.