Test tool for low-temperature test of vehicle speed reducer

The utility model discloses a test tool for a low temperature test of a vehicle speed reducer, which comprises a low temperature box body and a support tool, the side part of the support tool is of a triangular structure, the low temperature box body is fixedly arranged on the outer plane of the support tool, the top surface of the low temperature box body is provided with a box cover, and the box cover is fixedly arranged on the support tool. A tested prototype fixed to the supporting tool is arranged in the low-temperature box body, a heat insulation layer is arranged on the inner wall of the low-temperature box body, refrigerating materials are filled in the box body, and the supporting tool and the low-temperature box body are provided with through holes corresponding to an input shaft and an output shaft of the supporting tool. The utility model aims to provide the low-temperature test tool for the vehicle speed reducer, which can isolate a test environment, can be repeatedly used and is easy to meet tes