Stroke ring adjustment for hydrostatic pump - has circuit for providing position signals from delivery pipe

摘要

The adjust is for the stroke ring (11) of a hydrostatic radial piston pump in which the relief valve (33) is connected parallel to the delivery pipe (16). It has a pressure balancing control slide (34) subject to a throttle (54). A pressure transducer (31) is connected to the pipe (16) which provides position signals to the electromagnets (18) of the valve (17) via electronic controls (30, 26). ADVANTAGE - Pump in which during the unloading sequences the flow forces acting on the relief valve do not react on the control valve.