Invention Grant
- Patent Title: Shovel and method of controlling shovel
- Patent Title (中): 铲铲和铲铲控制方法
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Application No.: US14197305Application Date: 2014-03-05
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Publication No.: US09574329B2Publication Date: 2017-02-21
- Inventor: Chunnan Wu
- Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
- Current Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
- Current Assignee Address: JP Tokyo
- Agency: IPUSA, PLLC
- Priority: JP2011-197672 20110909; JP2011-198889 20110912
- Main IPC: E02F9/22
- IPC: E02F9/22 ; E02F9/20 ; F15B21/14

Abstract:
A shovel includes a plurality of hydraulic actuators including a first hydraulic actuator and a second hydraulic actuator, a main pump, a hydraulic pump-motor configured to function as a hydraulic motor by using hydraulic oil flowing out of the first hydraulic actuator and configured to function as a hydraulic pump, a control valve configured to control a flow of the hydraulic oil in the plurality of hydraulic actuators, a first oil passage to connect the main pump with the second hydraulic actuator through the control valve, and a second oil passage to connect the hydraulic pump-motor with the second hydraulic actuator. The second oil passage meets the first oil passage between the control valve and the second actuator.
Public/Granted literature
- US20140182279A1 SHOVEL AND METHOD OF CONTROLLING SHOVEL Public/Granted day:2014-07-03
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