Cooling device for integrated electric roller and frequency converter

The utility model relates to the technical field of cooling devices for electric rollers, in particular to an integrated cooling device for an electric roller and a frequency converter. The double-end motor simultaneously drives the fan blades and the circulating pump to rotate; the circulating pump sucks out cooling liquid in the liquid storage tank through a third pipeline, the cooling liquid is pumped into the electric roller and the frequency converter through a fourth pipeline, heating parts of the electric roller and the frequency converter are cooled, the temperature of the cooling liquid is increased, and then the cooling liquid flows to the cooling fins through the first pipeline; the fan blades drive air to pass through the cooling fins for heat exchange, so that the cooling fins with higher temperature dissipate heat, the temperature is reduced, the temperature of cooling liquid in the cooling fins is reduced, the cooling liquid flows back into the liquid storage tank, and a circulation process is