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Patent Searching and Data


Title:
ENCLOSED HYDRAULIC ROCK DRILL WORKING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/120128
Kind Code:
A1
Abstract:
An enclosed hydraulic rock drill working system, comprising a hydraulic rock drill (18) and a water tank (2); the water tank (2) supplies water to the hydraulic rock drill (18) by means of a high pressure water supply system, and returns water from the hydraulic rock drill (18) by means of a water return system. The system may directly use tap water, thus achieving a closed loop between high pressure water and low pressure water, which may save energy by more than 90% compared to a pneumatic rock drill, and produce less noise than a pneumatic rock drill system, the noise of a pneumatic rock drill on a mining working surface being 128.5 dB(A) on average, while the noise of the hydraulic rock drill is 100.5 dB(A), and thus noise may be reduced by more than 20%.

Inventors:
LI, Yongsheng (No.6699 Yintong Street, High-Tech ZoneWeifang, Shandong 1, 261061, CN)
WANG, Weilin (No.6699 Yintong Street, High-Tech ZoneWeifang, Shandong 1, 261061, CN)
YANG, Qi (No.6699 Yintong Street, High-Tech ZoneWeifang, Shandong 1, 261061, CN)
ZHANG, Fengqin (No.6699 Yintong Street, High-Tech ZoneWeifang, Shandong 1, 261061, CN)
WANG, Qiujing (No.6699 Yintong Street, High-Tech ZoneWeifang, Shandong 1, 261061, CN)
Application Number:
CN2018/120808
Publication Date:
June 27, 2019
Filing Date:
December 13, 2018
Export Citation:
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Assignee:
SHANDONG TIANRUI HEAVY INDUSTRY CO, LTD (No.6699 Yintong Street, High-Tech ZoneWeifang, Shandong 1, 261061, CN)
International Classes:
E21B1/26; E21B4/14; F15B9/08; F15B13/042
Foreign References:
CN204532051U2015-08-05
CN105114373A2015-12-02
CN104675774A2015-06-03
CN201560706U2010-08-25
US3916768A1975-11-04
US4369848A1983-01-25
US4430926A1984-02-14
JP2018012944A2018-01-25
CN107893626A2018-04-10
CN207620704U2018-07-17
CN107143537A2017-09-08
US20020070368A12002-06-13
Attorney, Agent or Firm:
BOXIN CHINA INTELLECTUAL PROPERTY (Room 936, 9th FloorJia Building 1, East District of Qinghe Jiayuan, Haidian District, Beijing 5, 100085, CN)
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