Barrier gate with compact structure and running without spring

The utility model discloses a barrier gate with a compact structure and running without a spring, which comprises a machine base, a motor is fixed on the machine base, a worm is fixed at one end of a driving shaft of the motor, a worm gear is in transmission connection with the worm, the worm is a multi-thread worm, a driving gear is coaxially fixed on the worm gear, and the driving gear is in transmission connection with the worm gear. The driving gear is in speed reduction meshing transmission with a driven gear, a sun gear is coaxially fixed on the driven gear, the sun gear is in meshing transmission with at least one planetary gear, the planetary gear is coupled to a planetary gear flange frame, a swing rod shaft is fixed in the center of the planetary gear flange frame, and a swing rod is arranged on the swing rod shaft. The driven gear and the sun gear are rotationally arranged on the swing rod shaft, the motor is controlled by a controller, and the motor is controlled by the controller to form a short