Continuously Variable Transmission For Off-Road Vehicle

A continuously variable automatic transmission for an off-road vehicle includes a power input stage, a CVT, a clutch, a forward and reverse gear assembly, and a power output stage connected in sequence. A shift mechanism connected to the forward and reverse gear assembly includes a shift drum, a shift fork, a shifting driving gear sleeve, a spring bias plate seat and a spring-with-two-moving-ends. The shift drum has a shifting track controlling the shift fork and a biasing track controlling the spring bias plate seat. An aggregate sideways force on the shift fork in an axial direction, which includes the force from the spring-with-two-moving-ends, can be controlled at least in part by relative spacing between the shifting track and the biasing track as a function of rotation of the shift drum.