| abstract |
Provided are a construction machine and a control method of the construction machine, which can accurately prevent overheating of a mounted electric machine by a simple configuration. For this purpose, the pump target discharge flow rate of the hydraulic pump is calculated on the basis of the operation amount of the operation means, the temperature of the electrical equipment mounted on the construction machine is detected, and the engine is operated in a low speed region in which the rotation speed of the engine is smaller than the set rotation speed. The engine minimum rotation speed, which is the minimum rotational speed that the engine can take when performing the low speed matching that matches the output of the hydraulic pump and the pump absorption horsepower of the hydraulic pump, is calculated based on the detected temperature of the electric equipment, and the pump target discharge is performed. The maximum value of the rotation speed conversion value of engine flow volume and engine minimum rotation speed is produced as a candidate of engine target rotation speed. n n Construction machinery |