BE483765A - - Google Patents
Info
- Publication number
- BE483765A BE483765A BE483765DA BE483765A BE 483765 A BE483765 A BE 483765A BE 483765D A BE483765D A BE 483765DA BE 483765 A BE483765 A BE 483765A
- Authority
- BE
- Belgium
- Prior art keywords
- prop
- wedging
- stirrup
- lock
- external
- Prior art date
Links
- 230000005489 elastic deformation Effects 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 6
- 230000000717 retained effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000004904 shortening Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 229910052729 chemical element Inorganic materials 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 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
- E21D15/36—Telescopic props with parts held relatively to each other by friction or gripping by a tiltable collar surrounding one or both parts
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 |
|---|---|
| BE483765A true BE483765A (https=) |
Family
ID=130088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE483765D BE483765A (https=) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE483765A (https=) |
-
0
- BE BE483765D patent/BE483765A/fr unknown
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