The invention relates to a valve 120, especially a check valve, for hydraulic plungers (3) of shield-type support frames in underground mining with a valve housing 121 and a switchable valve insert received therein, connections 126-129 for high pressure lines connected to the cylinder chamber and/or
The invention relates to a valve 120, especially a check valve, for hydraulic plungers (3) of shield-type support frames in underground mining with a valve housing 121 and a switchable valve insert received therein, connections 126-129 for high pressure lines connected to the cylinder chamber and/or the annular space of the hydraulic cylinder 3, and at least one connection 30 for an additional unit such as a pressure relief valve, a pressure sensor, and/or a pressure display. The valve housing 121 can be mounted to the hydraulic cylinder 3, and in the mounting stage, the connections 125-129 on the valve housing 121 extend axially parallel to the axis of the hydraulic plunger 3. According to an advantageous further embodiment, the valve housing can be provided with at least one fastening means for an extension housing 40 that can be mounted in a releasable manner to at least one side wall 22B thereof for additional hydraulic functions of the shield-type support frame (see FIG. 2).
대표청구항▼
The invention claimed is: 1. A check valve, adapted for use with hydraulic cylinders, the valve comprising a valve housing and a switchable valve insert received therein, with at least one connection for a high pressure line connected to at least one of a cylinder chamber and an annular chamber of
The invention claimed is: 1. A check valve, adapted for use with hydraulic cylinders, the valve comprising a valve housing and a switchable valve insert received therein, with at least one connection for a high pressure line connected to at least one of a cylinder chamber and an annular chamber of the hydraulic cylinder, the valve further comprising at least one connection for an additional unit selected from the group consisting of a pressure limiting valve, a pressure sensor, and a pressure display, wherein the valve housing is fixable to the hydraulic cylinder, and wherein the connections run axially parallel to the axis of the hydraulic cylinder in its position fixed to the hydraulic cylinder, the inner side of the valve housing facing the hydraulic cylinder in the mounted state of the valve is adapted to the outer contour of the hydraulic cylinder, the valve housing is provided with a recess at its cylinder-side inner side, which overlaps a mounting plate arranged at the hydraulic cylinder in the mounted state of the valve. 2. The valve according to claim 1, wherein the mounting plate comprises a hydraulic inlet to the cylinder chamber of the hydraulic plunger. 3. The valve according to claim 1, wherein the connections at the valve housing are arranged at the top at the valve housing in its position fixed at the hydraulic cylinder. 4. The valve according to claim 1, wherein the inner side of the valve housing facing the hydraulic cylinder in the mounted state of the valve is adapted to the outer contour of the hydraulic cylinder. 5. The valve according to claim 1, wherein the side of the valve housing facing the connections comprises a chamfer or the bottom side of the valve housing comprises a chamfer. 6. A check valve, adapted for use with hydraulic cylinders, the valve comprising a valve housing and a switchable valve insert received therein, with at least one connection for a high pressure line connected to at least one of a cylinder chamber and an annular chamber of the hydraulic cylinder, the valve further comprising at least one connection for an additional unit selected from the group consisting of a pressure limiting valve, a pressure sensor, and a pressure display, wherein the valve housing is fixable to the hydraulic cylinder, and wherein the connections run axially parallel to the axis of the hydraulic cylinder in its position fixed to the hydraulic cylinder, the connections are arranged in at least two stages at the valve housing, with a first, lower stage near the inner side and a second, higher stage near the outer side of the valve housing. 7. The valve according to claim 6, wherein the connections for the high pressure lines and/or for the pressure display are arranged in the higher stage. 8. The valve according to claim 6, wherein the connections for the pressure limiting valve and/or the pressure sensor are arranged in the lower stage. 9. The valve according to claim 6, wherein the connections at the valve housing are arranged at the top at the valve housing in its position fixed at the hydraulic cylinder. 10. The valve according to claim 6, wherein the inner side of the valve housing facing the hydraulic cylinder in the mounted state of the valve is adapted to the outer contour of the hydraulic cylinder. 11. The valve according to claim 6, wherein the side of the valve housing facing the connections comprises a chamfer or the bottom side of the valve housing comprises a chamfer. 12. A check valve, adapted for use with hydraulic cylinders, the valve comprising a valve housing and a switchable valve insert received therein, with at least one connection for a high pressure line connected to at least one of a cylinder chamber and an annular chamber of the hydraulic cylinder, the valve further comprising at least one connection for an additional unit selected from the group consisting of a pressure limiting valve, a pressure sensor, and a pressure display, wherein the valve housing is fixable to the hydraulic cylinder, and wherein the connections run axially parallel to the axis of the hydraulic cylinder in its position fixed to the hydraulic cylinder, comprising at least one fastening means for an extension housing which is mounted in a releasable manner to one of the side walls of the valve housing for additional hydraulic functions of a shield-type support frame, the extension housing comprises a hose connection and connection receptions for function elements for actuating a corner cylinder of the shield-type support frame. 13. The valve according to claim 12, wherein the extension housing comprises a reception bore for a pressure control valve as a function element for actuating the corner cylinder. 14. The valve according to claim 12, wherein the extension housing is provided with connection receptions for function elements for controlling a movement of only one horizontal skid of the shield-type support frame. 15. The valve according to claim 12, wherein the valve housing comprises a hydraulic outlet to the cylinder chamber of the hydraulic cylinder at the rear side or at the bottom side. 16. The valve according to claims 12, wherein the hose connections and the connection receptions are axially parallel to the hydraulic cylinder.
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이 특허에 인용된 특허 (2)
Tardy Maurice (Saint Etienne FRX), Braking valve for hydraulic circuits.
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