BE511962A - - Google Patents
Info
- Publication number
- BE511962A BE511962A BE511962DA BE511962A BE 511962 A BE511962 A BE 511962A BE 511962D A BE511962D A BE 511962DA BE 511962 A BE511962 A BE 511962A
- Authority
- BE
- Belgium
- Prior art keywords
- wedge
- clamping
- mine prop
- mine
- friction
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 description 1
- 108700017836 Prophet of Pit-1 Proteins 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- 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
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Clamps And Clips (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE511962A true BE511962A (enrdf_load_stackoverflow) |
Family
ID=150556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE511962D BE511962A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE511962A (enrdf_load_stackoverflow) |
-
0
- BE BE511962D patent/BE511962A/fr unknown
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