Patent attributes
The present disclosure discloses a winch comprising a transmission shaft disposed in a longitudinal direction, a motor in drivable connection with the transmission shaft, a three-stage center wheel rotatably mounted on the transmission shaft, an upper planetary wheel frame mounted on the three-stage center wheel, a lower planetary wheel right frame mounted on the outer side of the three-stage center wheel, a convex extending from an end of the upper planetary wheel frame, a connecting ring mounted on the three-stage center wheel which is longitudinally movable relative to the convex, and a position control mechanism to control longitudinal movement of the transmission shaft, wherein the three-stage center wheel is in contact with one end of the connecting ring, and a spring is disposed between the other end of the connecting ring and the upper planetary wheel frame.
