Title:
CIRCUMFERENTIAL IMPACT DRILL ANTI-JAMMING DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2021/164091
Kind Code:
A1
Abstract:
A circumferential impact drill anti-jamming device and method, the method comprising: using pressure generated by high-pressure water such that a pressure difference is generated between upper and lower ends of a piston (51) on an impact main shaft (5); combining the energy storage and energy release of an energy accumulator (3), such that the impact main shaft (5) axially reciprocates; by means of the spiral cooperation between the impact main shaft (5) and a joint (6), achieving the compound motion of axial movement and circumferential rotation of the impact main shaft (5); and then driving an impact hammer (53) on the impact main shaft (5) to circumferentially strike a drill crown (7), and finally achieving repeated circumferential impact on the drill crown (7).
Inventors:
ZHANG HUA (CN)
ZHU QIANWEI (CN)
GAO PENG (CN)
ZHU QIANWEI (CN)
GAO PENG (CN)
Application Number:
PCT/CN2020/080555
Publication Date:
August 26, 2021
Filing Date:
March 23, 2020
Export Citation:
Assignee:
UNIV NANTONG (CN)
International Classes:
E21B4/16
Foreign References:
| CN108360974A | 2018-08-03 | |||
| CN103628815A | 2014-03-12 | |||
| CN103883247A | 2014-06-25 | |||
| US20180163479A1 | 2018-06-14 |
Attorney, Agent or Firm:
NANJING HUISHENG PATENT TRADEMARK FIRM (CN)
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