Title:
CONSTRUCTION MACHINERY
Document Type and Number:
WIPO Patent Application WO/2022/139296
Kind Code:
A1
Abstract:
An embodiment of the present invention relates to construction machinery comprising: a main control valve which receives and transfers a hydraulic oil; a swing motor which is operated by the hydraulic oil transferred from the main control valve; a first hydraulic pressure line which is connected to the main control valve and one side of the swing motor; a first valve arranged on the first hydraulic pressure line; a first pressure detection member which detects the pressure of the hydraulic oil passing through the first hydraulic pressure line between the first valve and the main control valve; a fourth pressure detection member which detects the pressure of the hydraulic oil passing through the first hydraulic pressure line between the swing motor and the first valve; and a control unit which calculates the flow rate of the hydraulic oil discharged from the swing motor on the basis of the pressure of the hydraulic oil detected by the first pressure detection member and the pressure of the hydraulic oil detected by the fourth pressure detection member.
Inventors:
JEON HYEONGGUK (KR)
Application Number:
PCT/KR2021/018936
Publication Date:
June 30, 2022
Filing Date:
December 14, 2021
Export Citation:
Assignee:
HYUNDAI DOOSAN INFRACORE CO LTD (KR)
International Classes:
E02F9/22
Foreign References:
| KR20190122868A | 2019-10-30 | |||
| KR20120040684A | 2012-04-27 | |||
| KR20190124289A | 2019-11-04 | |||
| US20140060022A1 | 2014-03-06 | |||
| KR20150082297A | 2015-07-15 |
Attorney, Agent or Firm:
WETHEPEOPLE IP & LAW FIRM (KR)
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