CONTROL DEVICE FOR CONSTRUCTION MACHINE COOLING FAN

摘要

The purpose of the present invention is to provide a control device for a construction machine cooling fan with which the effect of heat from a warmup operation can be reduced. A control device for a construction machine according to the present invention is equipped with a control unit (10a) that controls the rotational frequency of a cooling fan (21) in accordance with the main pump discharge pressure (P) detected by a main pump discharge pressure sensor (25), the engine cooling water temperature (Tw) detected by an engine cooling water temperature sensor (26), the operating oil temperature (To) detected by an operating oil temperature sensor (27), and the engine rotational frequency (E) detected by an engine rotational frequency sensor (28). By rotating the cooling fan (21) with a rotational frequency controlled by this control unit (10), the cooling breeze that is generated is transmitted to an oil cooler (19) and a control valve (13).