Protective device for power transmission maintenance

The protection device is characterized in that arc-shaped grooves are formed in the left side and the right side of a seat plate, a back plate is arranged on the rear side of the seat plate, an adjusting rod is rotationally connected to the back plate, the adjusting rod is in threaded connection with the seat plate, and a placing plate is slidably connected to the front face of the seat plate; the front end and the rear end of the right side of the lower end face of the seat plate are provided with second sliding grooves, sliding blocks are connected into the first sliding grooves and the second sliding grooves in a sliding mode, guide rods are arranged in the first sliding grooves and the second sliding grooves, the sliding blocks are connected with the guide rods in a sliding mode, and springs are arranged between the faces, away from each other, of the sliding blocks and the first sliding grooves and the second sliding grooves. The first clamping plate is connected with the sliding block in the first slidi