Improved hanging arm device of plasma polishing machine

The utility model discloses a plasma polishing machine hanging arm improvement device which comprises an installation base, the bottom end of the installation base is movably connected with a rotary connecting rod, a telescopic rod is connected to the bottom end of the rotary connecting rod in an inserted mode, the bottom end of the telescopic rod is movably connected with a hanging arm connecting rod, and the bottom end of the hanging arm connecting rod is movably connected with a supporting hanging arm. A rotating shaft is inserted between the top end of the rotating connecting rod and the mounting base, and a fixed spring bolt is mounted at the position, close to the bottom of the rotating shaft, of the top end of the rotating connecting rod through a spring. The plasma polishing machine hanging arm does not need to be disassembled, the plasma polishing machine hanging arm is simple and convenient, the distance between the hanging arm body and the movable clamping arm can be freely adjusted, polishing piec