专利检索 ap:("XUZHOU XUGONG FOUNDATION CONSTRUCTION MACHINERY CO., LTD.") AND inv:"Qianbin Geng" 第 1 页

1.

发明授权
Main hoist system of rotary drilling rig, and control method therefor 有权

公开(公告)号：US12091293B2

公开(公告)日：2024-09-17

申请号：US17924693

申请日：2020-12-03

申请人： XUZHOU XUGONG FOUNDATION CONSTRUCTION MACHINERY CO., LTD.

发明人： Yonghua Zhang , Yu Sun , Zhigang Liu , Changmeng Shan , Hongchen Qiu , Xiafang Gao , Xing Gao , Junyun Shan , Qianbin Geng

IPC分类号： B66D1/08 , E21B19/00 , F15B13/044

CPC分类号： B66D1/08 , E21B19/008 , F15B13/044

摘要： A main winch system of a rotary drilling rig includes a main action loop, a pilot control loop, and a feedback control loop. The main action loop includes an engine, a hydraulic pump, a main control valve, a balance valve, a main winch motor, and an oil tank. The pilot control loop includes a pilot handle, a solenoid valve I, a pressure relay, and the main control valve in the main action loop. The feedback control loop includes a solenoid valve II and the hydraulic pump and the main control valve in the main action loop. In response to a lifting action of the pilot handle for the main winch, under the control of a button, the solenoid valve II is energized continuously, and the solenoid valve I is energized and de-energized according to a given rule.