Travel driving device of sub-soiling cultivation soil preparation machine

A travel driving device of a sub-soiling cultivation soil preparation machine comprises an engine, a gearbox, a front transmission shaft, a back transmission shaft, a front drive axle, a back drive axle, a power divider and an electric-hydraulic control device. A hydraulic pump forming the electric-hydraulic control device is connected with a hydraulic motor through an oil pipe, a guide hydraulic control handle is connected with the hydraulic pump and the hydraulic motor through an oil pipe, an output shaft of the engine is in transmission connection with the hydraulic pump through the power divider, an output shaft of the hydraulic motor is connected with an input shaft of the gearbox, an output shaft of the gearbox is connected with an input shaft of the front drive axle and an input shaft of the back drive axle through the front transmission shaft and the back transmission shaft, and the front drive axle and the back drive axle are respectively in transmission connection with a front drive wheel and a back