Safety lifting device for wind energy apparatus, and working method thereof

The invention discloses a safety lifting device for a wind energy apparatus. The device comprises a hanging bracket, a sucker mechanism and a control mechanism, the hanging bracket is provided with aconnecting frame, a laser proximity switch is arranged at the lower part of the hanging bracket, the connecting frame is provided with a lifting hook, the lifting hook is connected with a cable drum through a cable, the sucker mechanism is arranged in the hanging bracket, a sucker, an air tube and a driving mechanism are arranged in the sucker mechanism, the air tube and the driving mechanism areboth connected with the sucker, the control mechanism is mounted on the hanging bracket, and the laser proximity switch, the air tube and the driving mechanism are all connected with the control mechanism. The laser proximity switch arranged on the hanging bracket is used to detect a distance between the hanging bracket and a ribbed plate to be lifted, a laser displacement sensor is sued to detectthe position, and the cont