The utility model belongs to the impact test classification of structure parts. The utility model adopts an electromagnetic clutch and a three-stage speed-increasing gear to obtain maximum rotation speed in a short time and obtain the data of the service life of products. The specific structure comprises an electric control circuit part and a mechanical transmission part. The alternating current loop of the circuit comprises an AC contactor, an on off switch, a voltage regulator, an induction machine and a 24 volt direct current power supply. The direct current loop of the circuit is composed of the electromagnetic clutch, an intermediate relay, a time relay and a counter. The utility model has the advantages of simple structure, compact structure, small occupation area, high actual use efficiency, less electricity consumption, low cost, smaller noise, etc.