发明名称 |
OVERLOAD PREVENTION DEVICE FOR CONSTRUCTION MACHINE |
摘要 |
In an over-loading prevention device including a hydraulic pump, a control valve, and a control lever, a discharge-quantity control unit performs constant-torque control which decreases a discharge quantity in proportion to an increase in a discharge pressure in the pump to control an input torque of the pump uniformly. An operation-state detection unit detects an actuation state of the control lever. A control unit outputs a control signal that sets the pump input torque to a minimum torque according to the constant-torque control, to the discharge-quantity control unit when the control lever is operated over a predetermined speed, and subsequently changes a level of the control signal to a maximum torque according to the constant-torque control in accordance with a predetermined control pattern to raise the pump input torque. |
申请公布号 |
KR20110110874(A) |
申请公布日期 |
2011.10.07 |
申请号 |
KR20117022424 |
申请日期 |
2007.04.27 |
申请人 |
SUMITOMO (S.H.I.) CONSTRUCTION MACHINERY CO., LTD. |
发明人 |
TSUKAMOTO HIROYUKI;NISHI TAKASHI |
分类号 |
F15B11/00;B60K17/00;E02F9/22;F02D29/00 |
主分类号 |
F15B11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|