The invention discloses an anti-blockage device of a wood chipper. The anti-blockage device comprises a main framework, a feeding hopper, a
speed regulator, a control component, a belt wheel component, a cutter, a motor, a belt
pulley, a belt, a
discharge hopper and a Hall sensor component, the feeding hopper is located at the left end of the main framework in a
welding connection mode, the
speed regulator is located at the left lower end of the main framework in a threaded connection mode, the control component is located at the lower end of the main framework in a threaded connection mode, the belt wheel component is located at the middle of the main framework in a close fitting connection mode, the cutter is located at the middle end of the belt wheel component in a close fitting connection mode, the motor is located at the right end of the main framework in a threaded connection mode, the belt
pulley is located at the front end of the motor in a close fitting connection mode, the belt is connected with the belt
pulley and the cutter, the
discharge hopper is located at the right upper end of the main framework in a
welding connection mode, and the Hall sensor is located at the left end of the belt wheel component and in threaded connection with the main framework.