BE563009A - - Google Patents
Info
- Publication number
- BE563009A BE563009A BE563009DA BE563009A BE 563009 A BE563009 A BE 563009A BE 563009D A BE563009D A BE 563009DA BE 563009 A BE563009 A BE 563009A
- Authority
- BE
- Belgium
- Prior art keywords
- disc
- prop
- mine
- head
- mine prop
- Prior art date
Links
- 238000003466 welding Methods 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims 3
- 238000004804 winding Methods 0.000 claims 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000005036 nerve Anatomy 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
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/24—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism
- E21D15/26—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism with screw, worm, or the like, not self-locking but normally prevented from rotation by friction members which slip upon excessive pressure
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)
- Braking Arrangements (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE563009A true BE563009A (2) |
Family
ID=184400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE563009D BE563009A (2) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE563009A (2) |
-
0
- BE BE563009D patent/BE563009A/fr unknown
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