| 摘要 |
PROBLEM TO BE SOLVED: To drive a hydraulic pump having a capacity equivalent to a crane without a mechanism for driving a generator under an equivalent engine load, in an on-vehicle crane with a mechanism in which the generator is driven by an engine. SOLUTION: A generator drive control device includes: the hydraulic pump 7 driven by the engine 6; a direction control valve 37 for changing an oil passage of pressure oil delivered from the hydraulic pump 7; flow rate control valves 40-43 for controlling the flow rate of the pressure oil delivered from the direction control valve 37; a hydraulic motor 38 for driving the generator driven by the pressure oil delivered from the direction control valve 37; and a controller 2 for controlling the direction control valve 37 based on an operation signal to the crane. The controller 2 changes the direction control valve 37 so as to supply the pressure oil only to the flow rate control valves 40-43 when the operation signal is input and so as to supply the pressure oil only to the hydraulic motor 38 when the operation signal is absent. COPYRIGHT: (C)2011,JPO&INPIT |
