Dynamic bending fatigue test device for clutch fork

The utility model discloses a dynamic bending fatigue test device for a clutch shifting fork, which is characterized in that a piston rod of a power cylinder penetrates through a first through hole to be connected with a shifting fork driving device through the first through hole, so that the shifting fork driving device can be driven to move upwards when the power cylinder does piston motion; the adjusting screw rod is installed in the second through hole, the shifting fork force bearing tool is installed between the first pair of adjusting nuts to play a role in fixing the shifting fork force bearing tool, and the second pair of adjusting nuts play a role in fixing the adjusting screw rod; the shifting fork is mounted on the shifting fork bracket through the shifting fork pin shaft, so that the shifting fork can move in the axial direction of the shifting fork pin shaft; an air inlet of the power air cylinder is connected with the air guiding device, the piston rod of the power air cylinder is pushed to mov