| 摘要 |
In order to suppress unnecessary output of electric lever operation device signals, caused by vehicle body vibration during travel when the vehicle body is only traveling, and in order to suppress restrictions on output of electric lever operation device signals required for work, when the vehicle is traveling and working, this control device for construction machinery comprises: an electric lever operation device that instructs a hydraulic actuator; a travel operation lever device that instructs a travel device; a controller that outputs drive commands to an electromagnetic proportional valve that reduces the pressure of pressurized oil supplied from a pilot hydraulic oil source; a vehicle body state determination unit that determines the state of the vehicle body in accordance with the electric signals for the electric lever operation device and the operation amount for the travel operation lever device; and a dead zone calculation unit that calculates a dead zone for electric signals for the electric lever operation device, in accordance with the state of the vehicle body. The dead zone calculation unit sets the dead zone for electric signals to a first specified value when the vehicle is only traveling and sets the dead zone for electric signals to a second specified value smaller than the first specified value, when the vehicle is traveling and working. |
