Pressing mechanism convenient for self-locking and self-unloading

The utility model discloses a pressing mechanism convenient for self-locking and self-unloading, which comprises a base and four self-locking and self-unloading devices symmetrically arranged on the base, one end of each self-locking and self-unloading device passes through a carrier plate and is arranged on a lower pressing plate, a tested part is arranged on the lower pressing plate, a wiring hole is arranged on the lower pressing plate corresponding to a plug position of the tested part, and the plug position of the tested part is provided with a plug. The wiring of the test equipment is located under the wiring hole and installed on the overload plate, the wiring is fixed to the overload plate through an arranged shell, and the situation that a connector lug retracts when the self-locking and self-unloading device drives the tested part to be inserted into the wiring position is avoided. According to the device, the tested part and the test equipment are assembled and self-locked through primary pressing,