Novel multi -functional variable speed augmenter

The utility model relates to a motor vehicle, electric motorcycle, transmission system technical field such as small -size fork truck, especially, novel multi -functional variable speed augmenter, a main shaft has, power input at the main shaft is provided with the gear that gos forward, reverse gear and afterburning gear, the gear that gos forward is dual gea, the driving gear of the end tooth meshing power input of gear advances, the gear is switched over in another end tooth meshing, it establishes in a switching epaxially to switch over the gear train, switch over that epaxial group is equipped with afterburning input gear and afterburning gear engagement and the group is equipped with the 2nd carrier gear of the first gear engagement of passing a bridge, the 2nd carrier gear group establish reverse gear epaxial, the epaxial equipment of reversing gear there is speed in reverse input gear meshing reverse gear, still be equipped with first combination gear and second combination gear through the keyway structure group on the main shaft, select to mesh the internal tooth of go forward gear, reverse gear or afterburning gear. The utility model relates to a brand -new development technique, small, the usage is extensive, has the multifunctionality, the installation of being convenient for, convenient maintenance.