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Patent Searching and Data


Title:
DRIVING SYSTEM FOR CORE DRILLING RIG
Document Type and Number:
WIPO Patent Application WO/2020/093412
Kind Code:
A1
Abstract:
A driving system for a core drilling rig, comprising a driving motor (7). The driving motor (7) comprises an outer rotor (73) and an inner stator (75), and mutually-matched convex ribs (77) are provided on the inner wall of the outer rotor (73) and the outer wall of the inner stator (75). The outer rotor (73) and the inner stator (75) are in clearance fit. A clearance between the outer rotor (73) and the inner stator (75) is a driving liquid channel (74). The length of the outer rotor (73) is less than that of the inner stator (75). The outer rotor (73) is provided between the front and rear ends of the inner stator (75). The outer rotor (73) is connected to an outer cylinder (23). The rear end of the inner stator (75) is connected to a coupling (76). The driving system for the core drilling rig can be matched with a ground device to control a downhole device of the core drilling rig to work according to the coring steps, long-distance mud driving drilling coring is achieved, and the driving system is high in efficiency, and realizes stepless speed change and micro-disturbance.

Inventors:
GAO MINGZHONG (CN)
XIE HEPING (CN)
CHEN LING (CN)
GUO JUN (CN)
ZHANG ZHILONG (CN)
ZHANG ZETIAN (CN)
LU YIQIANG (CN)
LI CONG (CN)
HE ZHIQIANG (CN)
Application Number:
CN2018/114964
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:
CN105275720A2016-01-27
CN107165597A2017-09-15
CN106761382A2017-05-31
CA1285550C1991-07-02
US6371221B12002-04-16
Attorney, Agent or Firm:
GAOYUNG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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