Automatic bolt loosing and tightening device for cargo ropeway crane

The utility model provides an automatic bolt loosing and tightening device for a cargo ropeway crane, and relates to the field of cargo ropeway transportation. The automatic bolt loosing and tightening device is characterized in that one end of a servo motor, one end of a reducer, one end of a coupler and one end of a solid shaft are sequentially connected, the other end of the solid shaft is connected to a transmission shaft in the center of one side of a chuck, two or more clamping claws capable of moving in the radial direction of the chuck are arranged on the other side of the chuck, and the clamping claws are connected with the solid shaft through clamping claw loosing and tightening mechanisms. One end of a hollow shaft is further connected to the center of one side of the chuck fixedly, the middle of the hollow shaft is connected with a transmission gear, and the transmission gear is connected to a fixed torque electric wrench. By means of the automatic bolt loosing and tightening device, automatic loosing and automatic tightening of bolts of the cargo ropeway crane are achieved, and operation is convenient.