The utility model discloses a power reversing hydraulic
system which comprises a main oil way, an oil inlet pipeline and an oil return pipeline, and a reverse gear electromagnetic
reversing valve, a forward electromagnetic
reversing valve, a high-speed electromagnetic
reversing valve and a PTO electromagnetic reversing valve which are controlled to start through hydraulic oil are connected in the main oil way. The main oil way is provided with a pressure oil port P, a medium-pressure oil port MP, a pressure oil port P1, an oil return port T1, a control oil port C and an oil drainage port L1, the control oil port C of the main oil way is connected with the
chassis lubricating
system through a
branch pipeline A, the oil drainage port L1 of the main oil way is connected with the
chassis lubricating
system through a
branch pipeline C, and an oil return pipeline is connected with the
chassis lubricating system through a
branch pipeline B. The power reversing hydraulic system integrates multiple functions of reversing, advancing, high speed, PTO and the like, is compact in structure, saves space, reduces system complexity and fault points, and can lubricate a chassis.