Power transferring confluence variable-speed transmission device and hydraulic control system thereof

The invention relates to a power transferring confluence variable-speed driving device and a hydraulic control system thereof. The system is composed of a mechanical transferring transmission mechanism and a hydraulic transmission regulating mechanism, wherein the mechanical transferring transmission mechanism is composed of a transferring mechanism TD and a variable-speed transmission mechanism, the transferring mechanism TD is a planet wheel mechanism, and the hydraulic transmission regulating mechanism is composed of a hydraulic transmission control mechanism and a hydraulic transmission ratio regulating mechanism RC. The mechanical transferring transmission mechanism has an operating characteristic that power which is transferred by two output ends is automatically regulated and distributed according to working resistance borne by the two output ends, the function that input power and output power are continuously variable within a certain range in the process of transmission can be achieved, and the overall efficiency of a transmission system of a vehicle is effectively improved. When the vehicle is started and accelerated quickly, hydraulic transmission shunt transferred power is increased, and is transferred in a large transmission ratio, so that the vehicle can be started smoothly and accelerated quickly.