发明名称 |
ROTATION-TYPE WORKING MACHINE |
摘要 |
<p>A slewing-type working machine includes: a hydraulic motor 11 having first and second ports 11a and 11b and slewing an upper slewing body; a hydraulic pump 10; a slewing operation device 12 including an operation member 12a; a control valve 13 controlling the hydraulic motor 11 based on an operation signal of the slewing operation device 12; first and second pipe-lines 14 and 15 connecting the first and second ports 11a and 11b of the hydraulic motor 11 to the control valve; communication switching devices 25 and 26 capable of switching communication and cutoff between both pipe-lines 14 and 15 and a tank T; an electric motor 29; an electric storage device 30; and a controller 27. The controller 27 communicates an outlet-side pipe-line to the tank T during slewing, makes a brake based on a regenerative action by the electric motor 29 and the electric storage device 30 and causes the electric storage device 30 to store regenerative power, upon deceleration operation. When a failure occurs in an electric system, the controller 29 brings the communication switching devices 25 and 26 to a communication-cutoff state and stops the regenerative action to secure slewing.</p> |
申请公布号 |
EP2706153(A1) |
申请公布日期 |
2014.03.12 |
申请号 |
EP20120779876 |
申请日期 |
2012.04.19 |
申请人 |
KOBELCO CONSTRUCTION MACHINERY CO., LTD. |
发明人 |
KOMIYAMA, MASAYUKI;KAMIMURA, YUSUKE |
分类号 |
E02F9/20;E02F9/12;E02F9/22;E02F9/26;F15B7/00;F15B11/00;F15B11/08;F15B15/02;F15B15/20;F15B21/14 |
主分类号 |
E02F9/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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