Xuzhou Xugong Foundation Construction Machinery Co., Ltd.

Yu Sun

Jiguang Zhang

Yonghua Zhang

Qianbin Geng

Zhigang Liu

Changmeng Shan

Junyun Shan

Hongchen Qiu

Xing Gao

Ju Luo

Xiafang Gao

Qiangsheng Fan

Bin Qu

Haigang Zhu

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.

Main hoist system of rotary drilling rig, and control method therefor

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Xuzhou, China

Yu Sun