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Patent Searching and Data


Title:
DRILLING DEVICE AND DRILLING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/118785
Kind Code:
A1
Abstract:
A drilling device and a drilling method therefor. A mounting cylinder (5) is disposed in a housing (12), a motor (4) is mounted in the mounting cylinder (5), a shafting (7) is rotatably mounted in the mounting cylinder (5), one end is connected to an output end of the motor (4), and the other end is provided with a supporting part for supporting a cam (8); the cam (8) may be relatively and slidingly sleeved on the shafting (7) in an axial direction, the bottom surface has a height difference in the axial direction, the bottom surface of the cam (8) is supported by the supporting part, and the cam (8) is opened with a notch; one end of an impact hammer (9) is connected to the cam (8), the other end is an impact end, the impact hammer (9) is sleeved by a driving spring (10), one end of the driving spring (10) is connected to the impact hammer (9), and the other end abuts against the mounting cylinder (5); and the lower portion of the impact hammer (9) is provided with a head cone (13) connected to a lower end of the housing (12).

Inventors:
LIU JINGUO (CN)
WANG MANGKUAN (CN)
ZHANG FEIYU (CN)
FENG JINGKAI (CN)
LIU YUWANG (CN)
Application Number:
CN2018/124613
Publication Date:
June 18, 2020
Filing Date:
December 28, 2018
Export Citation:
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Assignee:
SHENYANG INST AUTOMATION CAS (CN)
International Classes:
E21B1/16; E21B4/06; E21B4/10
Domestic Patent References:
WO2017007469A12017-01-12
Foreign References:
CN108026756A2018-05-11
CN103691769A2014-04-02
CN105658379A2016-06-08
CN103835713A2014-06-04
CN103306600A2013-09-18
Attorney, Agent or Firm:
SHENYANG PATENT & TRADEMARK AGENCY ACADEMIA SINICA (CN)
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