Double-split gearbox

The utility model provides a double-split gearbox which comprises a box body, an input shaft, a left middle shaft, a right middle shaft and an output shaft, wherein the left middle shaft and the right middle shaft are located on the two sides of the input shaft and are in transmission connection with the input shaft, and the output shaft is coaxial with the input shaft and is in transmission connection with the left middle shaft and the right middle shaft. In the actual application process of the double-split gearbox, due to the fact that the bearing seats on the front side and the rear side of the gearbox body are connected into a whole, the overall rigidity of the gearbox body is very good after the gearbox body is installed, and due to the fact that the bearing seats are connected into a whole and extend to be connected with the two installation parts of the gearbox body, the overall rigidity of the gearbox body is very good. And the stress of each bearing seat can be transmitted to the mounting part, so t