GB914855A - Improvements in longwall mining installations - Google Patents
Improvements in longwall mining installationsInfo
- Publication number
- GB914855A GB914855A GB83760A GB83760A GB914855A GB 914855 A GB914855 A GB 914855A GB 83760 A GB83760 A GB 83760A GB 83760 A GB83760 A GB 83760A GB 914855 A GB914855 A GB 914855A
- Authority
- GB
- United Kingdom
- Prior art keywords
- buffers
- conveyer
- coal
- advanced
- face
- 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
- 238000009434 installation Methods 0.000 title abstract 2
- 238000005065 mining Methods 0.000 title abstract 2
- 239000000872 buffer Substances 0.000 abstract 5
- 239000003245 coal Substances 0.000 abstract 3
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 abstract 2
- 108700017836 Prophet of Pit-1 Proteins 0.000 abstract 2
- RRLHMJHRFMHVNM-BQVXCWBNSA-N [(2s,3r,6r)-6-[5-[5-hydroxy-3-(4-hydroxyphenyl)-4-oxochromen-7-yl]oxypentoxy]-2-methyl-3,6-dihydro-2h-pyran-3-yl] acetate Chemical compound C1=C[C@@H](OC(C)=O)[C@H](C)O[C@H]1OCCCCCOC1=CC(O)=C2C(=O)C(C=3C=CC(O)=CC=3)=COC2=C1 RRLHMJHRFMHVNM-BQVXCWBNSA-N 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
- E21F13/086—Armoured conveyors shifting 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
- E21D15/60—Devices for withdrawing props or chocks
- E21D15/606—Devices for withdrawing props or chocks the props being moved systematically
-
- 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
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0065—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices driven, or automatically, e.g. electrically-hydraulically controlled
-
- 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
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0078—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with individual shifting devices
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)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
914,855. Advancing mine roof supports. GUTEHOFFNUNGSHUTTE STERKRADE A.G. Jan. 8, 1960 [Jan. 8, 1959], No. 837/60. Class 20 (2). [Also in Group XXX] In a longwall mining installation, extensible buffers 7 are arranged between a row of pit-props 1 and a coal conveyer 6. As shown, a pair of telescopic buffers 7, operated by compressed air, are mounted on the base of an hydraulic pitprop 1 which is mechanically advanced by a ram 5 towards the coal face 8, and, by progressively extending, constantly urge a conveyer 6 against the coal face. When the prop 1 is advanced, the pressure exerted by the buffers is overcome and they collapse still maintaining constant pressure on the conveyer, an overpressure relief valve being provided for the escape of the compressed air. In other embodiments, the buffers may be hydraulically operated; or a compression spring may be used which slowly expands to urge the conveyer against the advancing coal-face, and is compressed when the prop 1 is advanced; the buffers may be mounted on the conveyer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG0026123 | 1959-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB914855A true GB914855A (en) | 1963-01-09 |
Family
ID=7122846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB83760A Expired GB914855A (en) | 1959-01-08 | 1960-01-08 | Improvements in longwall mining installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB914855A (en) |
-
1960
- 1960-01-08 GB GB83760A patent/GB914855A/en not_active Expired
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