Articulated dump truck priority steering system based on cartridge reversing valve

The utility model discloses an articulated dump truck priority steering system based on a cartridge reversing valve, which is characterized in that the oil inlet end of a hydraulic pump in the priority steering system is communicated with a hydraulic oil tank, the oil outlet end of the hydraulic pump is connected with a pilot handle on one hand, and the oil outlet end of the hydraulic pump is communicated with the cartridge reversing valve on the other hand; the pilot handle is communicated with the lifting valve and is used for realizing four functions of lifting, descending, keeping and floating of the container; the cartridge reversing valve is communicated with the steering gear through the damper, the steering gear is communicated with the hydraulic oil tank, the hydraulic oil passesthrough the damper and a throttle valve in the middle of the steering gear and then generates pressure difference delta P in front of and behind the damper, and the cartridge reversing valve is located in the middle under the