Anti-inclination device for lifting appliance of crane

The invention relates to the technical field of hoisting equipment, in particular to an anti-inclination device for a lifting appliance of a crane, which comprises a cross beam, two goods picking components distributed left and right are movably arranged at the bottom of the cross beam, an anti-inclination component is rotatably arranged in the cross beam, a driving component is arranged at the right end of the cross beam, and a gradienter is fixedly arranged at the top of the cross beam. The inclination of the cross beam is detected through the gradienter, and a signal is transmitted to the servo controller of the servo motor, so that the servo motor is started, the sub-drive sliding sleeve slides towards the downward inclined end so as to be meshed with the first key groove or the second key groove, the first adjusting screw rod or the second adjusting screw rod is further driven, and the positions of the two internal thread seats are adjusted; the distances between the two internal thread seats and the mid