HYDRAULIC STEERING DEVICE

摘要

A hydraulic steering device is provided comprising a supply port arrangement having a supply port (P) and a return port (T), a working port arrangement having two working ports (L, R), direction valve means (2) arranged between said supply port arrangement and said working port arrangement, at least two fluid meters (3, 4), each of said fluid meters (3, 4) having a movable metering element (12, 15),said metering elements (12, 15) being connected by a shaft (5), said shaft (5) having an axis, selector valve means (6) being provided, said selector valve means (6) in a first position arranging said fluid meters (3, 4) hydraulically in parallel and in a second position shutting off one of said fluid meters (3, 4), said selector valve means (6) having a valve element (20) shiftable in an direction parallel to said axis. It is an object to reduce wear in said hydraulic steering device in a simple manner. To this end said selector valve means (6) are arranged between said two fluid meters (3, 4), said shaft (5) extending through said valve element (20).

主权项

1. A hydraulic steering device comprising a supply port arrangement having a supply port (P) and a return port (T), a working port arrangement having two working ports (L, R) , direction valve means arranged between said supply port arrangement and said working port arrangement, at least two fluid meters, each of said fluid meters having a movable metering element,
said metering elements being connected by a shaft, said shaft having an axis, selector valve means being provided, said selector valve means in a first position arranging said fluid meters hydraulically in parallel and in a second position shutting off one of said fluid meters, said selector valve means having a valve element shiftable in an direction parallel to said axis, wherein said selector valve means are arranged between said two fluid meters, said shaft extending through said valve element.