To provide a working vehicle preventing an actuator from being influenced by the rotating speed change of an electric motor by controlling a control valve even if the rotating speed of the motor changes.

A power shovel vehicle 1 operated by the actuator 20 comprises: the electric motor 31 driving a pump 32 for supplying an operating fluid to the actuator 20; a battery 50 supplying DC power; an inverter 41 supplying the DC power by converting it into AC power to operate the electric motor 31 at the requested rotating speed; the control valve 34 controlling the supply amount of the operating fluid supplied to the actuator 20; and a controller 40 controlling the operation of the actuator 20 by the control valve 34 and controlling the operation of the electric motor 31 by the inverter 41. The controller 40 reduces the opening of the control valve 34 by a predetermined size when accelerating the rotating speed of the electric motor 31.

COPYRIGHT: (C)2008,JPO&INPIT