HYDRAULIC VALVE ARRANGEMENT WITH CONTROL/REGULATING FUNCTION

摘要

The present invention relates to a hydraulic valve arrangement for controlling/regulating at least one hydraulic consumer of a mobile machine, with a summation interconnection of at least two hydraulic valves and at least one consumer interconnection of hydraulic valves, wherein the outputs of the summation interconnection are hydraulically connected with the inputs of the consumer interconnection, wherein at least one backflow valve is provided in the consumer interconnection. According to the invention, the at least one backflow valve for throttling a consumer return volume flow opens or closes in dependence on a consumer inflow pressure and comprises at least one main piston arranged in a bushing and at least two further pistons arranged in a lid separate from the bushing.

主权项

1. A hydraulic valve arrangement for controlling/regulating at least one hydraulic consumer (V1) of a mobile machine, with a summation interconnection of at least two hydraulic valves and at least one consumer interconnection of hydraulic valves, wherein
the outputs of the summation interconnection are hydraulically connected with the inputs of the consumer interconnection, at least one backflow valve (R1, R2) is provided in the consumer interconnection, and for throttling a consumer return volume flow, the at least one backflow valve (R1, R2) opens or closes in dependence on a consumer inflow pressure and comprises at least one main piston (5b) arranged in a bushing (6b) as well as at least two further pistons (9b, 12b) arranged in a lid (2b) separate from the bushing (6b).