HYDRAULIC VALVE DEVICE

摘要

The invention relates to a hydraulic valve device having a fluid port arrangement (10) and having a movable control device (16) for at least partially controlling individual ports (P), (R), (LS), (P'A), (P'B) of the port arrangement (10), wherein to selectively hold the control device (16) fixed, a latching device (22) is provided, which latching device (22) has at least one latching part (26) which is guided in a guide part (24) and which, actuable by a control part (30) of the control device (16), can be placed into a latching position of a locking part (28). By virtue of the fact that, in all movement positions of a control slide (18) of the control device (16), an energy store which is preferably in the form of a pressure spring (38) is permanently supported with the one free end thereof against said control slide (18) and with the other free end thereof against the locking part (28), and that the control part (30) has a control cone (32) for at least one latching part (26) and said control part (30) also has a locking cone (34), and that the locking cone (34) has a steeper inclination than the control cone (32), no additional latching springs are required which could result in the valve device being inoperable in the event of failure.