Protective layer cushion block fixing device

The invention belongs to the technical field of protection layer cushion block installation, and particularly relates to a protection layer cushion block fixing device which comprises an installation base, a driving wheel is arranged on the upper end face of the installation base, a plurality of supporting blocks are fixedly connected to the left edge of the upper end face of the installation base, and supporting plates are fixedly connected to the upper end faces of the supporting blocks. The right end face of the supporting plate is fixedly connected with a U-shaped fixing frame, the left end face of the supporting block is fixedly connected with a driving motor, the driving motor is fixedly connected with a lead screw through an output shaft, the exterior of the lead screw is in threaded connection with a sliding block, and rotating grooves are formed in the front end and the rear end of the sliding block correspondingly. Cylinders are rotationally connected into the front end and the rear end of the slidi