Collector ring device with cooling function

A collector ring device with a cooling function provided by the present invention comprises propeller blades, a reinforcing slip ring, a positive slip ring, a sleeve and a negative slip ring, the positive slip ring, the negative slip ring and the reinforcing slip ring sequentially sleeves the sleeve, and the positive slip ring, the negative slip ring, the reinforcing slip ring and the sleeve rotate along with a main shaft of a motor. The propeller blades are arranged at the outer side wall of the reinforcing slip ring. According to the collector ring device with the cooling function, in order to reduce the temperature rise of the collector ring and the carbon brush of a generator, the propeller blades are arranged on the collector ring, when the generator is used for generating electricity, the collector ring rotates along with the main shaft, the propeller blades on the collector ring can rotate along with the collector ring to generate wind blowing to the collector ring and the carbon brush, forced ventilat