Electrohydraulic steering system for use in mobile working machine i.e. tractor, has pilot valve which is adjusted by on board electronics over electrical actuator, where actuator is connected with path sensor arranged at steering valve

摘要

The system has an operator-safe hydrostatic guidance aggregate (1) and an auxiliary worker-operated supplementary steering valve (5), where volumetric flow to a steering cylinder is controlled. An expiration/cutoff valve is arranged in an inlet spacer, and controls pressure in a return line (41), and a pilot valve (4) i.e. adjustable 4/3-way valve, adjusts the steering valve. The pilot valve is adjusted by an on board electronics (11) over an electrical actuator, which is connected with a path sensor (34) arranged at the steering valve.