Intelligent inner clamping type jack

The intelligent inner clamping type jack is characterized in that a rear disc is movably arranged in a stretching jack and located on the rear side of a front disc, the rear end of a spring is fixedly connected with the rear disc, a top disc is movably arranged in a shell and located on the rear side of a fixing anchor, and a plurality of second rods are fixedly arranged on the outer wall of the rear side of the top disc; the front end of the second rod is fixedly connected with the rear disc, a plurality of clamping blocks are fixedly arranged on the outer wall of the rear disc, the positions of the clamping blocks correspond to the positions of the springs one to one, inclined grooves are formed in the outer wall of the rear side of the fixing anchor, and the positions of the inclined grooves correspond to the positions of the clamping blocks one to one. The clamping block and the inclined groove are arranged, after the fixing anchor moves backwards, the inclined groove gets close to the clamping block, so