All-gear continuously variable automatic transmission and speed ratio active control system

An all-gear continuously variable automatic transmission and speed ratio active control system, comprising a torque proportional distribution differential mechanism, a speed ratio active control mechanism and a planetary gear mechanism;

• the torque proportional distribution differential mechanism is connected to a front end of the planetary gear mechanism in series to form a continuously variable automatic transmission device together with the planetary gear mechanism;
• the speed ratio active control mechanism is arranged between the torque proportional distribution differential mechanism and the planetary gear mechanism;
• the torque proportional distribution differential mechanism comprises a first differential bevel gear and a second differential bevel gear arranged at power and motion output ends;
• the first differential bevel gear is rigidly connected to a gear ring of the planetary gear mechanism by a hollow first differential bevel gear shaft;
• a second differential bevel gear shaft penetrates through the hollow first differential bevel gear shaft;
• and the second differential bevel gear is connected to a sun gear of the planetary gear mechanism by the second differential bevel gear shaft;
• the speed ratio active control mechanism comprises a speed ratio adjustment motor, a speed ratio adjustment driving gear and a speed ratio adjustment driven gear, wherein the speed ratio adjustment driving gear and the speed ratio adjustment driven gear are in a normally engaged state;
• the speed ratio adjustment driven gear is rigidly connected to the first differential bevel gear shaft;
• and the speed ratio adjustment driving gear is installed on an output shaft of the speed ratio adjustment motor;
• and
• two input ends of the planetary gear mechanism are the sun gear at a center and an outermost gear ring respectively, and planetary gears are engaged with the sun gear and the gear ring simultaneously and output power by a planetary carrier.