Hay rake gear box

The utility model provides a gearbox of a hayrake, and belongs to the technical field of machinery. The problems that an existing hay rake gear box is not compact enough in structure, and external sundries are likely to enter the gear box are solved. The hayrake gear box comprises a connecting base and a supporting shaft, the supporting shaft is coaxially sleeved with a first bevel gear, a gear box body and a cam, the first bevel gear is fixedly connected with the gear box body and can rotate relative to the supporting shaft, the cam is fixedly connected with the supporting shaft, and the connecting base is provided with a power input end; the inner end of the power input end is provided with a second bevel gear, and the second bevel gear is meshed with the first bevel gear. The gear box body is provided with a plurality of mounting parts, grass raking shafts are arranged in the mounting parts, the inner ends of the grass raking shafts are fixedly connected with rollers in the axial direction through swing ar