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

US12091293B2 · kind B2 · utility

Assignee

• XUZHOU XUGONG FOUNDATION CONSTRUCTION MACHINERY CO., LTD. · CN

Inventors

• Yonghua Zhang · Longbeilingcun, CN
• Yu-Chen Sun · Bellevue, US
• Zhigang Liu · Xianyang, CN
• Changmeng Shan · Xuzhou, CN
• Hongchen Qiu · Xuzhou, CN
• Xiafang Gao · Xuzhou, CN
• Xing Gao · Xuzhou, CN
• Junyun Shan · Xuzhou, CN
• Qianbin Geng · Xuzhou, CN

Key dates

• Filing date: Dec 3, 2020
• Grant date: Sep 17, 2024
• Expiry date: Jan 19, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H61/46
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

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.