GB980498A - Control valve assembly for advancing hydraulic face roof support structures - Google Patents
Control valve assembly for advancing hydraulic face roof support structuresInfo
- Publication number
- GB980498A GB980498A GB2101162A GB2101162A GB980498A GB 980498 A GB980498 A GB 980498A GB 2101162 A GB2101162 A GB 2101162A GB 2101162 A GB2101162 A GB 2101162A GB 980498 A GB980498 A GB 980498A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- support structures
- roof support
- valve assembly
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012530 fluid Substances 0.000 abstract 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/26—Hydraulic or pneumatic control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
980,498. Valves. GEWERKSCHAFT EISENHUTTE WESTFALIA. May 31, 1962 [June 9, 1961], No. 21011/62. Heading F2V. In a control valve assembly used to control self-advancing hydraulic face roof support structures a non-return feed valve 2 allows pressure fluid from a pump to flow from inlet 9 to outlets 10 leading to hydraulic props. The valve 2 may be closed by operation of a hand wheel 6 to screw-in the spindle 1 to bring the pressure member 18 down on the valve. The normally closed withdrawal valve 4, may then be opened by rotation of the hand wheel 7 to screw-out the spindle 3 so allowing fluid to flow to the return duct 17. A safety valve 13 interconnects the prop supply ducts to the return line.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG32453A DE1127298B (en) | 1961-06-09 | 1961-06-09 | Control valve for migrating hydraulic longwall mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB980498A true GB980498A (en) | 1965-01-13 |
Family
ID=7124468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2101162A Expired GB980498A (en) | 1961-06-09 | 1962-05-31 | Control valve assembly for advancing hydraulic face roof support structures |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE618647A (en) |
| DE (1) | DE1127298B (en) |
| GB (1) | GB980498A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1193909B (en) * | 1964-02-20 | 1965-06-03 | Karl Hohberg | Overflow, fill and drain valve for hydraulic pit rams |
-
1961
- 1961-06-09 DE DEG32453A patent/DE1127298B/en active Pending
-
1962
- 1962-05-31 GB GB2101162A patent/GB980498A/en not_active Expired
- 1962-06-07 BE BE618647A patent/BE618647A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE618647A (en) | 1962-12-14 |
| DE1127298B (en) | 1962-04-12 |
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