Telescopic steel bar binding device

The utility model discloses a telescopic reinforcing steel bar binding device which comprises a shell, one end of the shell is rotationally connected with a rotating shaft, a containing cavity is formed in the rotating shaft, one end of the containing cavity is slidably connected with a telescopic column, threads are arranged on the outer wall of the telescopic column, and four sliding grooves are formed in the outer wall of the telescopic column at equal intervals. And moving blocks are slidably connected to the inner walls of the sliding grooves correspondingly, and the bottoms of the four moving blocks are fixedly connected to the outer walls of the telescopic columns correspondingly. Through the arrangement of the rotating motor, the rotating shaft, the storage cavity, the sliding groove, the moving block, the telescopic column, the steel bar binding hook, the first fixing nut and the second fixing nut, the steel bar binding hook is adjusted by adjusting the extending length of the telescopic column, and