| 摘要 |
A mining machine is provided with means for cooling the motors and other equipment provided on the machine for propelling the machine, said means comprising an electric motor, a refrigeration circuit (9) including a compressor (39) a condenser (45) and an evaporator (33) and a water cooling circuit (7) wherein water is pumped from a supply through cooling devices (3, 5) associated with the equipment to be cooled on the machine and through the evaporator of the refrigerant circuit. The evaporator is shown downstream of the cooling devices, but could be upstream. By providing an independent water cooling circuit, water normally used for dust suppression need only be sprayed into the mine during mining operations and it is not necessary to use this water when other tasks are performed by the machine in the mine for cooling purposes. <IMAGE> |
