Speed reducer for crane

The utility model relates to the field of speed reducers, in particular to a speed reducer for a crane, which comprises a main body and a base, one end of the main body is provided with a connecting shaft, the other side of the main body is connected with a fixing box, one side of the fixing box is provided with an air outlet net, the lower end of a connecting plate is connected with a damping plate, two sides of the base are provided with fixing grooves, and springs are arranged in the fixing grooves. According to the speed reducer for the crane, the fan is arranged, so that when the speed reducer works for a long time, heat in the speed reducer can be quickly dissipated, the heat dissipation effect is good, the heat dissipation effect is good, and the service life of the speed reducer is prolonged. According to the speed reducer, overheating caused by long-time work of the speed reducer is avoided, the fixing groove and the spring are arranged, vibration generated by the speed reducer can be buffered in the