发明名称 |
Control method for hydraulic-driven winch and apparatus therefor |
摘要 |
According to the present invention, when a winch drum is in the wind-down rotation, operating a control valve is operated to the wind-down side in a state in which capacity of a hydraulic motor is set to small capacity by a free fall valve to thereby rotate the hydraulic motor to the wind-down side at high speeds, and at the same time, motor holding pressure is controlled according to an operating amount of the free fall valve by a holding pressure control valve to thereby regulate rotational speed of the hydraulic motor and stop the latter.
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申请公布号 |
US6371447(B1) |
申请公布日期 |
2002.04.16 |
申请号 |
US19990468908 |
申请日期 |
1999.12.22 |
申请人 |
KOBELCO CONSTRUCTION MACHINERY CO., LTD. |
发明人 |
IMANISHI ETSUJIRO;YONEZAWA SATOSHI;KOBAYASHI TAKAHIRO;NISHIMOTO YOSHIO;TSUNOO TAISUKE |
分类号 |
B66D1/44;B66D5/26;F15B11/00;F15B11/08;(IPC1-7):B66D1/00 |
主分类号 |
B66D1/44 |
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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