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Patent Searching and Data


Title:
DRILLING MECHANISM OF CORING DRILLING RIG
Document Type and Number:
WIPO Patent Application WO/2020/093410
Kind Code:
A1
Abstract:
Disclosed by the present invention is a drilling mechanism of a coring drilling rig, comprising a central rod, a fluid channel starting module, an outer barrel, an outer barrel unlocking module, a shunting module and a drill bit, wherein the central rod penetrates the fluid channel starting module, the outer barrel unlocking module and an inner cavity of the shunting module from back to front; the fluid channel starting module is behind the outer barrel and is connected to the outer barrel unlocking module; the shunting module is in front of the outer barrel unlocking module, and a hydraulic motor is connected in front of the shunting module; the outer barrel comprises a driving section, wherein the driving section is a rotor of the hydraulic motor; and the outer wall of the outer barrel is fixedly connected to a centralizer, and the front end of the outer barrel is connected to the drill bit. The drilling mechanism of the coring drilling rig provided by the present invention may cooperate with ground equipment to control underground equipment of the coring drilling rig to work according to coring steps and to keep drilling vertically, and a rotating part has little friction with an outer side dental drill.

Inventors:
GAO MINGZHONG (CN)
XIE HEPING (CN)
CHEN LING (CN)
ZHANG ZHILONG (CN)
GUO JUN (CN)
ZHANG ZETIAN (CN)
LU YIQIANG (CN)
LI CONG (CN)
HE ZHIQIANG (CN)
Application Number:
PCT/CN2018/114962
Publication Date:
May 14, 2020
Filing Date:
November 12, 2018
Export Citation:
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Assignee:
UNIV SHENZHEN (CN)
UNIV SICHUAN (CN)
International Classes:
E21B25/00
Foreign References:
CN108150122A2018-06-12
CN108286416A2018-07-17
CN107905752A2018-04-13
CN107514240A2017-12-26
US20170306713A12017-10-26
Attorney, Agent or Firm:
GAOYUNG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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