Title:
WINCH PRESSURIZATION CONTROL DEVICE AND CONTROL METHOD THEREFOR, AND ROTARY DRILLING RIG
Document Type and Number:
WIPO Patent Application WO/2016/134519
Kind Code:
A1
Abstract:
Disclosed are a winch pressurization control device and a control method therefor, and a rotary drilling rig, which relate to the field of engineering machinery control. The winch pressurization control device comprises a pressurizing winch pressure switch (7), a sensor (8), a controller (9), a pressurization control electromagnetic valve (10) and a pressurizing winch braking electromagnetic valve (11). The winch pressurization control device can stop the pressurization of the pressurizing winch when winch pressurization is abnormal, which can avoid the structural damage to the rig and improve the safety and liability of the construction of the winch pressurization model.
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Inventors:
GAO JING (CN)
LIU NA (CN)
GUO HUANHUAN (CN)
MA XU (CN)
ZHANG QUANBO (CN)
WANG ZHUANLAI (CN)
GAO XING (CN)
HU ZHIMIN (CN)
DONG MEI (CN)
LIU NA (CN)
GUO HUANHUAN (CN)
MA XU (CN)
ZHANG QUANBO (CN)
WANG ZHUANLAI (CN)
GAO XING (CN)
HU ZHIMIN (CN)
DONG MEI (CN)
Application Number:
PCT/CN2015/073335
Publication Date:
September 01, 2016
Filing Date:
February 27, 2015
Export Citation:
Assignee:
XUZHOU XUGONG FOUNDATION CONSTR MACHINERY CO (CN)
International Classes:
E21B44/00
Foreign References:
| CN103466491A | 2013-12-25 | |||
| CN202729687U | 2013-02-13 | |||
| CN101956536A | 2011-01-26 | |||
| CN104692272A | 2015-06-10 | |||
| CN204607472U | 2015-09-02 | |||
| CN101892829A | 2010-11-24 | |||
| CN202280526U | 2012-06-20 | |||
| SU1162952A1 | 1985-06-23 | |||
| SU1761946A2 | 1992-09-15 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
中国国际贸易促进委员会专利商标事务所 (CN)
中国国际贸易促进委员会专利商标事务所 (CN)
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