Crop combine harvester gearbox assembly

The present invention relates to a transmission assembly, in particular to a combine harvester crop transmission assembly. Which is mainly to solve the prior art combine harvester is generally present in the form of using two drives, so that more power is insufficient during use, and to be used as four-wheel drive, you must add a gearbox or a hydraulic drive device manufacturing more complicated performance is not stable enough, and higher production costs and other technical issues. The present invention comprises a housing (1), said housing (1) equipped with differential assembly, differential assembly is connected to two drive output shaft (3), the large differential differential assembly four-wheel drive gear connected to an input gear (4), four-wheel drive four-wheel drive input gear connected to the input shaft (5), four-wheel drive four-wheel drive output shaft connected to the input shaft (7) by the input bevel gear wheel drive (6), four-wheel drive input gear wheel drive the input shaft, the input bevel gear wheel drive four-wheel drive is provided in the casing (8), four-wheel drive casing mounted on the outside of the casing.