Construction Machine

A construction machine comprising:

• a vehicle body having an operator's seat;
• a prime mover which is provided on said vehicle body and becomes a power source;
• a hydraulic pump driven by said prime mover and supplying a pressurized oil;
• a hydraulic actuator driven by the pressurized oil supplied from said hydraulic pump;
• and
• a lock device capable of switching between a lock position prohibiting the driving of said hydraulic actuator and an unlock position allowing the driving of said hydraulic actuator, wherein
• a work is performed by the driving of said hydraulic actuator in a state where said lock device is switched to the unlock position, characterized in that:
• a start switch for starting said prime mover;
• a wireless authentication device provided on said vehicle body and performing wireless authentication with a portable key device;
• and
• a vehicle body controller provided for starting said prime mover based on an operation of said start switch and authentication by said wireless authentication device are provided;
• and
• when said lock device is switched to the unlock position for allowing driving of said hydraulic actuator, in the case where said portable key device is within an authenticable range of said wireless authentication device, said vehicle body controller allows driving of said hydraulic actuator, while in the case where said portable key device is outside of the authenticable range of said wireless authentication device, said vehicle body controller prohibits driving of said hydraulic actuator.