Title:
CONTROL MECHANISM OF CORE DRILLING RIG
Document Type and Number:
WIPO Patent Application WO/2020/093413
Kind Code:
A1
Abstract:
A control mechanism of a core drilling rig, comprising: 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). A ball slot A (631) is formed on the inner wall of the core ring bearing (63). The core tube connecting pipe (62) is provided with a ball hole A (621) and a ball slot B (622). The bearing inner ring (64) is provided with a ball hole B (641) and a ball slot C (642). A ball slot D (661) is formed on an outer wall of the central rod (14). During drilling, the core tube connecting pipe (62) is connected to the core ring bearing (63) by means of the ball A (6211) and connected to the bearing inner ring (64) by means of the ball B (6411). During retraction, the core tube connecting pipe (62) is connected to the bearing inner ring (64) by means of the ball A (6211) and the bearing inner ring (64) is connected to the central rod (14) by means of the ball B (6411).
Inventors:
GAO MINGZHONG (CN)
XIE HEPING (CN)
CHEN LING (CN)
GUO JUN (CN)
ZHANG ZHILONG (CN)
ZHANG ZETIAN (CN)
ZHANG RU (CN)
LU YIQIANG (CN)
LI CONG (CN)
HE ZHIQIANG (CN)
XIE HEPING (CN)
CHEN LING (CN)
GUO JUN (CN)
ZHANG ZHILONG (CN)
ZHANG ZETIAN (CN)
ZHANG RU (CN)
LU YIQIANG (CN)
LI CONG (CN)
HE ZHIQIANG (CN)
Application Number:
PCT/CN2018/114965
Publication Date:
May 14, 2020
Filing Date:
November 12, 2018
Export Citation:
Assignee:
UNIV SHENZHEN (CN)
UNIV SICHUAN (CN)
UNIV SICHUAN (CN)
International Classes:
E21B4/02; E21B25/00; E21B17/043; E21B21/00
Domestic Patent References:
| WO2018104818A1 | 2018-06-14 |
Foreign References:
| CN102418488A | 2012-04-18 | |||
| CN204630763U | 2015-09-09 | |||
| CN205689152U | 2016-11-16 |
Attorney, Agent or Firm:
GAOYUNG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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