DE112008002215A5 - Extension frame for longwall mining in mines - Google Patents
Extension frame for longwall mining in mines Download PDFInfo
- Publication number
- DE112008002215A5 DE112008002215A5 DE112008002215T DE112008002215T DE112008002215A5 DE 112008002215 A5 DE112008002215 A5 DE 112008002215A5 DE 112008002215 T DE112008002215 T DE 112008002215T DE 112008002215 T DE112008002215 T DE 112008002215T DE 112008002215 A5 DE112008002215 A5 DE 112008002215A5
- Authority
- DE
- Germany
- Prior art keywords
- mines
- extension frame
- longwall mining
- longwall
- mining
- 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.)
- Withdrawn
Links
- 238000005065 mining Methods 0.000 title 1
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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
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)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Actuator (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007039937 | 2007-08-23 | ||
DE102007039937.7 | 2007-08-23 | ||
PCT/DE2008/001360 WO2009024136A2 (en) | 2007-08-23 | 2008-08-16 | Stope supporting structure for face support in mines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE112008002215A5 true DE112008002215A5 (en) | 2010-06-17 |
Family
ID=40378734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE112008002215T Withdrawn DE112008002215A5 (en) | 2007-08-23 | 2008-08-16 | Extension frame for longwall mining in mines |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112008002215A5 (en) |
WO (1) | WO2009024136A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102926788A (en) * | 2012-11-16 | 2013-02-13 | 无锡阳工机械制造有限公司 | Pressure regulation method for resistance-increasing and constant-resistance stages of hydraulic bracket |
CN109707417B (en) * | 2019-01-07 | 2020-03-13 | 胡连太 | Supercharging device and method suitable for individual hydraulic prop of underground coal mine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1400585A (en) * | 1964-04-16 | 1965-05-28 | Gullick Ltd | Pressure multiplier device and its applications |
GB2173241A (en) * | 1984-12-17 | 1986-10-08 | Komag Gwarectwo Mechanizacji G | Hydraulic control system for a mining support |
DE3626951C1 (en) * | 1986-08-08 | 1987-09-24 | Kloeckner Becorit Gmbh | Pitch cylinder |
DE10328286B4 (en) * | 2003-06-23 | 2015-05-13 | Caterpillar Global Mining Europe Gmbh | Hydraulic shield removal |
-
2008
- 2008-08-16 DE DE112008002215T patent/DE112008002215A5/en not_active Withdrawn
- 2008-08-16 WO PCT/DE2008/001360 patent/WO2009024136A2/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2009024136A2 (en) | 2009-02-26 |
WO2009024136A3 (en) | 2009-06-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: E21D0015440000 Ipc: E21D0023160000 |
|
R120 | Application withdrawn or ip right abandoned |