CVT (continuously variable transmission) power assembly of electrically driven tractor with mechanical cross-core PTO (power take-off) structure

The utility model provides an electrically-driven tractor CVT power assembly with a mechanical through PTO structure, which comprises an engine, a generator, a rear main driving motor, a gearbox, front wheel motors arranged in pairs, a PTO transmission case and an energy storage unit, and a PTO shaft of the PTO transmission case sequentially penetrates through a main shaft of the gearbox and a main shaft of the rear main driving motor and then is in power connection with the engine. The stepless speed change principle of motor speed regulation is adopted, the characteristics of low speed, large torque and wide speed regulation range of the motor are adopted, engine rotating speed and vehicle speed decoupling is achieved, and operation efficiency is high. 本实用新型提供一种机械穿心PTO结构的电驱式拖拉机CVT动力总成，发动机、发电机、后主驱动电机、变速箱、成对设置的前轮电机、PTO传动箱和储能单元，PTO传动箱的PTO轴依次穿过所述变速箱的主轴和所述后主驱动电机的主轴后和发动机动力连接。本实用新型采用电机调速的无级变速原理，电机低速大扭矩和调速范围宽的特性，实现发动机转速和车速解耦，作业效率高。