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Patent Searching and Data


Title:
HYDRAULIC BREAKER, SCRATCH MONITORING SYSTEM AND SCRATCH MONITORING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/147490
Kind Code:
A1
Abstract:
A hydraulic breaker according to an embodiment of the present invention can comprise: a cylinder having a plurality of hydraulic ports; a piston reciprocating inside the cylinder by means of a hydraulic pressure of a hydraulic fluid flowing in or discharged through the hydraulic ports; a temperature sensor for detecting temperature information relating to the frictional heat generated with respect to the direct contact between the cylinder and the piston due to scratches formed on the piston; and a transmission module for, if the piston is determined for scratches on the basis of the detected temperature information and is determined to have scratches, outputting the temperature information to a controller for performing a warning operation, wherein the hydraulic fluid prevents direct contact between the piston and the cylinder during the reciprocation of the piston.

Inventors:
JOO, Jin Moo (#208-1302, 60 Guil-ro 2-gil,Guro-gu, Seoul, 08325, KR)
PARK, Yong Shik (#120-1703, 36-1 Jinmal-ro,Siheung-si, Gyeonggi-do, 15002, KR)
KIM, Hyung Gon (#101-302, 9 Jeongwang-daero 143beon-gil,Siheung-si, Gyeonggi-do, 15032, KR)
Application Number:
KR2017/001774
Publication Date:
August 16, 2018
Filing Date:
February 17, 2017
Export Citation:
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Assignee:
DAEMO ENGINEERING CO., LTD. (15 Gunjacheon-ro, Siheung-si, Gyeonggi-do, 15102, KR)
International Classes:
E02F3/96; E02F5/30; E02F9/22; E02F9/26
Foreign References:
KR200360303Y12004-08-25
JP2007248228A2007-09-27
JP2010163772A2010-07-29
JP2010203206A2010-09-16
JPH1047312A1998-02-17
Attorney, Agent or Firm:
IPS PATENT FIRM (5th Fl, 14 Banpo-daero 23-gil,Seocho-gu, Seoul, 06656, KR)
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