Assembled helical gear capable of eliminating meshing clearance

The utility model relates to the technical field of gear structures, in particular to an assembly bevel gear capable of eliminating meshing clearance, which comprises a first gear and a second gear, a first coupling groove and a second coupling groove are sequentially arranged on the first gear from right to left, the second gear is of an annular structure, and the first coupling groove and the second coupling groove are arranged on the second gear. An annular base matched with the second gear is arranged on the left end face of the first gear, an adjusting groove, a first limiting groove and a guide hole are formed in the left end face of the annular base, a threaded groove and a groove which correspond to the adjusting groove and the guide hole respectively are formed in the second gear, and a guide rod is arranged in the groove. An elastic ring is arranged between the joint faces of the first gear and the second gear, vibration generated when the first gear and the second gear rotate relatively can be abso