Device group for replacing malfunctioning motor components of tower crane working at heights

The utility model provides a device group for replacing malfunctioning motor components of a tower crane working at heights. According to the device group, a triangular bracket is fixed on a balance arm of the tower crane; a winding engine is fixed on the ground on one side of the tower crane; the winding engine is connected with the triangular bracket fixed on the balance arm of the tower crane through a wire rope; the device group comprises the triangular bracket, wherein the triangular bracket is fixed on the balance arm of the tower crane through Omega-shaped fixing claws and bolts. The device group has the benefits that various components of the triangular bracket are assembled through the bolts, and are convenient to dismount and transport; the device group is convenient and fast in assembly of the triangular bracket on a working platform, guarantees stable operation, and can carry out positioning in the horizontal and perpendicular directions; a rotating shaft can rotate by 360 DEG, the components of the device group can realize flexible assembly and disassembly on the construction site, and the device group can be repeatedly applied to various projects.