Plastic gear strength detection tool

The utility model discloses a plastic gear strength detection tool, which comprises a base, a cover body and a test assembly, the test assembly comprises a to-be-detected gear, a limiting gear and a connecting shaft, the connecting shaft penetrates through the to-be-detected gear and the limiting gear, and the to-be-detected gear and the limiting gear are both limited with the connecting shaft in the circumferential direction; the base and the cover body are respectively provided with positioning holes which can be matched with the two ends of the connecting shaft; a clamping part capable of being in circumferential clamping connection with the limiting gear is arranged in the base, an accommodating cavity for placing a to-be-detected gear is formed in the cover body, a plurality of fixed teeth are arranged on the inner wall of the accommodating cavity, and the fixed teeth can be meshed with part of teeth of the to-be-detected gear; the cover body is also provided with a torque wrench placing hole for assembl