Anti-back-rolling device with high safety performance for crane

The utility model discloses an anti-back-rolling device with high safety performance for a crane, and relates to the technical field of cranes. The right side of the crane frame is fixedly connected with a fixing plate, the rear side of the top surface of the fixing plate is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating shaft, the front side of the top surface of the fixing plate is fixedly connected with a mechanism shell, the front end of the rotating shaft extends to the inner wall of the mechanism shell, and the front end of the rotating shaft is fixedly connected with a limiting block. A plurality of triggering grooves are formed in the surface of the limiting block, a pressure sensor is arranged on one side of the inner wall of each triggering groove, a first electric telescopic rod is fixedly connected to the lower portion of the front side of the inner wall of the mechanism shell, a mounting block is fixedly connected to the output end of the first el