Angle correcting mechanism for hoisting of crane

The invention discloses an angle correction mechanism for hoisting of a crane, relates to the technical field of crane parts, and solves the problem that a section of cable, deviating from the center of a detection device, between a winding drum and the detection device also extrudes a baffle, so that detection of cable deviation angle data of the cable is affected. Two symmetrically-distributed supporting seats are installed at the upper end of the main connecting plate, winding drums are installed on the supporting seats, the winding drums and the supporting seats are rotationally connected, and mooring ropes are wound around the winding drums; by installing the driving assembly, the cable and the detection structure can be kept perpendicular all the time, and therefore it can be effectively avoided that a section of cable between the winding drum and the detection structure deviates, and detection data is affected; by installing the dust brushing assembly at the lower end of the detection structure, dust a