Oil passage device and oil-cooled driving motor thereof

Abstract

The application relates to an oil passing device and an oil-cooled driving motor thereof, which comprises a first oil guide shaft and a second oil guide shaft, the outer diameter of the second oil guide shaft is larger than that of the first oil guide shaft, a connecting structure for connecting with a motor rotor shaft is arranged on the first oil guide shaft, a first oil channel penetrating through the first oil guide shaft is arranged in the first oil guide shaft in the axial direction of a rotor body, a second oil channel for communicating with an oil delivery pipe is arranged in the second oil guide shaft, and the second oil channel communicates with the first oil channel. In the application, the oil passing device is arranged between the oil delivery pipe and the motor rotor shaft, the oil delivery amount of the oil delivery pipe is ensured, the diameter of the motor rotor shaft at the end close to an oil inlet is reduced on the basis of the original diameter, a small-diameter rotary transformer can be selected and installed on the outer wall of the end of the motor rotor shaft close to the oil inlet, therefore, the size of a motor rear end cover and other parts can be reduced, and the weight and cost of the driving motor are reduced.

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