Fifth-sixth gear shifting mechanism of gearbox

The utility model relates to a fifth-sixth gear shifting mechanism of a gearbox, in particular to a mechanism capable of realizing fifth-sixth gear shift of the gearbox under the condition of the existing large die for the gearbox is not changed, which is mainly used for solving the difficult problems that the known shifting mechanism needs to change the structure of an upper cover, the number of added parts is large, and the development cost is high. The fifth-sixth gear shifting mechanism of the gearbox comprises a shifting rocker arm shaft which is fixed on the upper cover through a nut, and a shifting rocker arm connected on the shifting rocker arm shaft, as well as a reverse gear shift fork shaft and a fifth-sixth gear guide block, which are fixed on the shifting rocker arm, and the fifth-sixth gear shifting mechanism of the gearbox is characterized in that a fifth-sixth gear shift fork is connected on the reverse gear shift fork shaft in a sliding manner. The fifth-sixth gear shifting mechanism of the g