Comprehensive performance testing device for steering column assembly

The invention provides a comprehensive performance testing device for a steering column assembly. The comprehensive performance testing device comprises a bottom plate, a dynamometer, a servo electric cylinder, a tension and compression testing connecting part, a torque sensor, a tension and compression sensor and a servo motor. Wherein the dynamometer is arranged on the bottom plate; the servo motor is arranged on the bottom plate, one end of an inner shaft of the steering column is connected with the dynamometer, and the other end of the inner shaft of the steering column is connected with a power output end of the servo motor; the servo electric cylinder is arranged on the bottom plate; the tension and compression test connecting part is arranged at one end of an inner shaft of the steering column, the tension and compression test connecting part is rotatably connected with the inner shaft of the steering column, and the tension and compression test connecting part is connected with the power output end of