HYDRAULIC VALVE

摘要

A hydraulic valve with at least two switching positions including a valve housing including a borehole which includes sections with different diameters along its longitudinal direction; a supply connection for supplying a hydraulic fluid; at least one first operating connection and a second operating connection; at least one first tank drain and a second tank drain for draining the hydraulic fluid; and a piston arranged in the borehole in the longitudinal direction of the borehole wherein the piston is supported at the valve housing at one end by a spring which imparts a spring force and wherein the piston is coupled longitudinally movable with a magnetic actuator which is provided for imparting a magnetic force, wherein a first control groove connects the first operating connection with the first tank drain or with the supply connection.

主权项

1. A hydraulic valve with at least two switching positions, comprising;
a valve housing including a borehole which includes a first section and a second section with different diameters arranged along a longitudinal direction of the bore hole; a supply connection for supplying a hydraulic fluid; at least one first operating connection and a second operating connection; at least one first tank drain and a second tank drain for draining the hydraulic fluid; and a piston arranged in the borehole in the longitudinal direction of the borehole wherein the piston is supported at the valve housing at one end by a spring which imparts a spring force and wherein the piston is coupled longitudinally movable with a magnetic actuator which is provided for imparting a magnetic force, wherein a first control groove connects the at least one first operating connection with the at least one first tank drain or with the supply connection, wherein a second control groove connects the second operating connection with the second tank drain or with the supply connection, wherein a pin is arranged in the piston so that the pin is movable in the longitudinal direction relative to the piston wherein the piston cooperates with the spring in at least one switching position and wherein the pin is provided with a hydraulic connection with the second control groove, wherein the first control groove is defined by first operating surfaces with different sizes and wherein a larger of the first operating surfaces is arranged in the first section of the bore hole with a greater diameter than the second section of the borehole and a smaller of the first operating surfaces is arranged in the second section of the bore hole with a smaller diameter than in the first section of the borehole and the second control groove is defined by second operating surfaces which are arranged in the second section of the borehole with the smaller diameter.