Control mechanism of core drilling rig

US11773670B2 · kind B2 · utility

Assignees

• SHENZHEN UNIVERSITY · CN
• Sichuan University · CN

Inventors

• Mingzhong Gao · Longbeilingcun, CN
• Heping Xie · Sichuan, CN
• Ling Chen · Lo Wu, CN
• Jun Guo · Sichuan, CN
• Zhilong Zhang · Chengdu, CN
• Zetian Zhang · Chengdu, CN
• Ru Zhang · Chengdu, CN
• Yiqiang Lu · Sichuan, CN
• Cong Li · Longbeilingcun, CN
• Zhiqiang He · Nanhu, CN

Key dates

• Filing date: Nov 12, 2018
• Grant date: Oct 3, 2023
• Expiry date: Jul 23, 2039

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B34/063
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A control mechanism of a core drilling rig includes a central rod (14) and an outer barrel (23). The central rod (14) passes through, from the rear to the front, the inner cavities of a fluid channel activation module, an outer barrel unlocking module, a flow diverging module, and a coring barrel connecting module. The coring barrel connecting module comprises a core tube connecting pipe (62), a core ring bearing (63), a bearing inner ring (64), a ball A (6211) and a ball B (6411). The core tube connecting pipe (62) is connected at the front side thereof to the coring barrel (65). The bearing inner ring (64) is inside the core tube connecting pipe (62). The core ring bearing (63) is connected to an inner wall of the outer barrel (23).