Simple and convenient pulling motor water-cooling mechanism

The utility model relates to a pulling motor, especially a simple and convenient pulling motor water-cooling mechanism, which is characterized in that an electric motor case is divided into an inner cylinder and an outer cylinder, the outer wall of the inner cylinder is provided with a flow passage, a heating sleeve of the outer cylinder is interference fit with the inner cylinder, a cooling water channel is formed between the walls of the outer cylinder and the inner cylinder, and the cooling water channel is communicated with a water inlet and a water outlet. The utility model has simple structure, combines the cooling water and the machine body as a whole, a spiral cooling water channel is formed between the outer cylinder and the inner cylinder, thereby no needing to add other cooling mechanism, uniformly distributing the cooling medium and directly exchanging the heat, and improving the cooling effect. The outer cylinder is provided with a water inlet and a water outlet of the cooling channel, and the water inlet and the water outlet are respectively arranged at the start end and the tail end of the screw thread, the end of the combination of the inner cylinder and the outer cylinder adopts welding sealing, and the watertightness is detected by a hydraulic test. The utility model greatly simplifies the manufacturing technology, reduces the processing cost, and improves the electric motor performance.