Transmission device for transmission

The utility model relates to the technical field of agricultural machinery, and particularly discloses a transmission device for a speed changer, which comprises a main shaft, a cutter power shaft anda traveling power shaft, and further comprises an intermediate shaft, a plurality of shifting gears are fixedly connected to the intermediate shaft, and multi-linkage teeth are axially and slidably connected to the main shaft and can be meshed with the shifting gears in a single corresponding manner; the cutter power shaft and the intermediate shaft are in meshing transmission through a first gear set, the rotating speed of the intermediate shaft is lower than that of the main shaft, and the rotating speed of the cutter power shaft is lower than that of the intermediate shaft. The mini-tillertransmission is used for solving the problem that in the prior art, a mini-tiller transmission only has a walking power shaft and has a gear shifting function, so that normal ditching or hilling andother work cannot be carrie