BE522517A - - Google Patents
Info
- Publication number
- BE522517A BE522517A BE522517DA BE522517A BE 522517 A BE522517 A BE 522517A BE 522517D A BE522517D A BE 522517DA BE 522517 A BE522517 A BE 522517A
- Authority
- BE
- Belgium
- Prior art keywords
- cylinder
- accumulator
- cylinders
- hydraulic
- liquid
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 5
- 238000005065 mining Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer 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
- E21D15/58—Devices for setting props or chocks
- E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
- E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
- E21D15/587—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded by means of power accumulators to be pre-charged by rock 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)
- Fluid-Pressure Circuits (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE522517A true BE522517A (2) |
Family
ID=157762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE522517D BE522517A (2) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE522517A (2) |
-
0
- BE BE522517D patent/BE522517A/fr unknown
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