FT series brake linkage lifting-proof safety device

The utility model relates to an FT series brake linkage lifting-proof safety device which comprises three gas delivery manifolds, a lifting-proof safety device control box, a manual control box and a brake cylinder assembly and is characterized in that the lifting-proof safety device control box is...

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Bibliographische Detailangaben
Hauptverfasser:	ZENG QINGZONG, HE ZIWEI, HE ZHAOXIONG, HE YINGYANG, ZHANG YUEFENG, LIU MENGXIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	The utility model relates to an FT series brake linkage lifting-proof safety device which comprises three gas delivery manifolds, a lifting-proof safety device control box, a manual control box and a brake cylinder assembly and is characterized in that the lifting-proof safety device control box is provided with a two-position three-way liquid control gas valve and a three-way shuttle valve I which are communicated, the manual control box is provided with a constant through type button valve, the brake cylinder assembly is provided with a fast exhaust valve and a three-way shuttle valve II which are communicated, the two-position three-way liquid control gas valve is connected with a gas source through a gas delivery pipe I, the three-way shuttle valve I is connected with the constant through type button valve through a gas delivery pipe II, and the constant through type button valve is connected with the fast exhaust valve through a gas delivery pipe III. The safety device can achieve a braking drill rod lif