| 摘要 |
PROBLEM TO BE SOLVED: To make a worker clearly remind to which drive state the worker should switch a hydraulic pump, and to prevent that a hydraulic operation-type working machine performs an unexpected motion resulting from an improper switching operation of the drive state, in accessories of the working vehicle in which the hydraulic pump can be selectively driven by an engine and an electric motor.SOLUTION: An engine drive state selecting switch P-SW and a motor drive state selecting switch M-SWf which can perform a switching operation to an on-position or an off-position are made differently independent. When the motor drive state selecting switch M-SWf is in the on-position, changeover to a motor drive state is permitted, and when the engine drive state selecting switch P-SW is in the on-position, changeover to an engine drive state is permitted. Even if one of the switches is switch-operated to the on-position from the off-position in a state that the other of the switches is in the on-position, an input of the switching operation is invalidated and a drive state before the switching operation is maintained. |
