Hybrid system based on Hydrostatic transmission

摘要

The present invention discloses a hybrid system based on HST (Hydrostatic transmission). The HST-based hybrid system includes a battery 15; And charges a current to the battery 15 and monitors a signal generated from each of the sensors on the side of the transmission lever 14, the accelerator pedal 12, the brake pedal 13 and the working machine control lever 17 A controller (11) for generating a preset control signal; A hydrostatic transmission (HST) which is installed between the output shaft 1a of the engine 1 and the drive shaft 4 of the differential device 6 for rotating both the side drive wheels 5 and controlled by the controller 11 to increase or decrease the speed change ratio ) Unit (30); A first gear train 7 connected to the output shaft 1a of the engine 1 and a second gear train 8 connected to the drive shaft 4 of the differential device 6; A first electronic device 9 provided at one end of a drive shaft 4a connected to the first gear train 7 and controlled by the controller 11 and a drive shaft 4b connected to the second gear train 8, A second electronic device 22 provided at one end of the first electronic device 22 and controlled by the controller 11; And a gear pump (10) connected to the other end of a drive shaft (4a) connected to the first gear train (7) and supplying pressure oil to a main control valve device (18) for a working machine.