Xuzhou Xugong Foundation Construction Machinery Co., Ltd.

Zhigang Liu

Yonghua Zhang

Yu Sun

Qianbin Geng

Xing Gao

Changmeng Shan

Xiafang Gao

Hongchen Qiu

Junyun Shan

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

Zhigang Liu