Cooling system of a transmission device, in particular a reducing gear driving a sprocket wheel of a tracked or wheeled vehicle.

摘要

The invention relates to a cooling system of a transmission device, in particular a reduction gear (2) to the driving gears of a sprocket wheel (1) of a tracked or wheeled vehicle. The reduction gear (3) comprises an internal circuit (10) of lubrication with forced circulation of a heat transfer fluid and at least one additional heat exchange surface (15; 22) with the outside air, and means (16, 17, 24, 25) in order to channel the heat transfer fluid towards the heat exchange surface which is, for example, integrated with the hub (2) of the sprocket wheel (1) and / or constituted by an external radiator (20) fixed to the reduction gear (2) and, possibly equipped with fins (28).