Valve body assembly, lift hydraulic system, and vehicle

Abstract

The utility model provides a kind of valve body assembly applied to lifting hydraulic system, lifting hydraulic system and vehicle.The valve body assembly includes: lifting main valve, lifting main valve has first control end and second control end, lifting main valve has lifting state and descending state;Electric control pilot valve, electric control pilot valve has pressure oil port P, first outlet a, second outlet b, oil return port T, electric control pilot valve's pressure oil port P, electric control pilot valve's oil return port T are all communicated with oil supply device, first outlet a is communicated with first control end, second outlet b is communicated with second control end;Wherein, when electric control pilot valve is in first state, the oil pressure of first outlet a is greater than the oil pressure of second outlet b, lifting main valve is in lifting state, when electric control pilot valve is in second state, the oil pressure of first outlet a is less than the oil pressure of second outlet b, lifting main valve is in descending state.The scheme solves the problem of failure caused by icing under low temperature in prior art.

Images