METHOD FOR REVERSELY DRIVING A COOLING FAN OF A CONSTRUCTION HEAVY EQUIPMENT

摘要

A reverse driving apparatus for a cooling fan of heavy equipment for construction is provided to prevent accidents by operating a reverse rotation switch only when the reverse rotation of the cooling fan is needed and preventing the reverse rotation switch from operating when cooling operation is needed. A reverse driving apparatus comprises a coolant temperature sensing unit(4) for sensing the coolant temperature of a radiator(3); a transmission oil temperature sensing unit(6) for sensing the temperature of transmission oil; a key-on determination unit(13) for determining key-on state; a reverse rotation switch on/off determination unit(14) for determining on/off state of a reverse rotation switch(12) of a cooling fan driving motor; and a controller(20) for permitting input of current to an input terminal of the reverse rotation switch if a key is determined as on-state and the reverse rotation switch is determined as off-state, and cutting off current supplied to the reverse rotation switch if at least one of the coolant temperature sensed by the coolant temperature sensing unit and the transmission oil temperature sensed by the transmission oil temperature sensing unit is higher than a reference temperature.