Patent ID: 8544263

Claim:
Construction equipment including an engine, a hydraulic pump and a pilot pump which are driven by the engine, and a hydraulic actuator which is operated by the hydraulic pump, the construction equipment comprising: an electric control lever outputting a manipulation signal in proportion to a manipulation amount; a manipulation locking lever outputting a manipulation signal for control in preference to the manipulation signal of the electric control lever when an error occurs in the manipulation signal of the electric control lever; an electronic flow control valve installed in a flow path between the hydraulic pump and the hydraulic actuator and shifted, by signal pressure that is input in proportion to the manipulation signal of the electric control lever, to control a start, a stop, and a direction change of the hydraulic actuator; a control unit having an operation unit operating and outputting a control signal that corresponds to the manipulation signal of the electric control lever, and a current driving unit controlling current so that a current value corresponding to the control signal operated by the operation unit can be applied to the electronic flow control valve; and a power control unit intercepting current that is applied from the current driving unit to the electronic flow control valve when the manipulation locking lever is manipulated in a state where trouble has occurred in the electric control lever or the control unit.