FIELD: transport.
SUBSTANCE: stepless gear ratio variation transmission incorporates an input shat (I), output shat (O) and gear ratio variator coupled with the aforesaid output shaft and furnished with its own output shaft. The 1st gear of the planetary reduction gear with input shafts coupled with the variator (V) output shaft and the transmission input shaft via the first coupling (H) and gear of the second planetary reduction gear with input shafts coupled with the variator output shafts and transmission input shaft come in mesh with the third planetary reduction that comes into mesh with the transmission output shaft via the first braking element (L). The second braking element (B) is arranged to lock the output shaft of the second planetary reduction gear in static state.
EFFECT: reduced rpm of parts and number of gearings.
8 cl, 2 dwg
