Safety-controlling hydraulic load sensing valve device

The utility model discloses a safety-controlling hydraulic load sensing valve device. The hydraulic load sensing valve device comprises an inner chamber, a valve body of a first housing and a second housing, a plunger piston positioned in the inner chamber and sleeved with an oil seal and a lever connected with one end of the plunger piston, wherein one ends of the first housing and the second housing are both communicated with the inner chamber, and the other ends of the first housing and the second housing are a rear return-passage oil inlet and a rear return-passage oil outlet; the valve body is also provided with a third housing, one end of the third housing is communicated with the inner chamber, and the other end of the third housing is a front return-passage oil inlet; and the plunger piston is formed by sequentially connecting columns and round platforms with different diameters, an annular rubber valve is sleeved on a third column, a plurality of projections and ring-shaped spacing edges are arranged on both sides of the rubber valve, and oil seals are sleeved on both a first column and a fifth column. The hydraulic load sensing valve device can realize that when a front axle of a vehicle fails braking, a real axle still can provide maximum braking force; and the hydraulic load sensing valve device has the advantages of simple structure, small volume and convenience in realization, and can be widely used in vehicle braking devices.