PL92966B1 - - Google Patents
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- Publication number
- PL92966B1 PL92966B1 PL1975178013A PL17801375A PL92966B1 PL 92966 B1 PL92966 B1 PL 92966B1 PL 1975178013 A PL1975178013 A PL 1975178013A PL 17801375 A PL17801375 A PL 17801375A PL 92966 B1 PL92966 B1 PL 92966B1
- Authority
- PL
- Poland
- Prior art keywords
- stand
- fingers
- canopy
- plate
- shield housing
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims description 21
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 7
- 238000009408 flooring Methods 0.000 claims 2
- 239000000428 dust Substances 0.000 description 4
- 230000035515 penetration Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 229920001967 Metal rubber Polymers 0.000 description 1
- 206010041662 Splinter Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
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)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Lining And Supports For Tunnels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742407227 DE2407227B1 (de) | 1974-02-15 | 1974-02-15 | Hangendkappen-Anordnung fuer Schildausbaugestelle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL92966B1 true PL92966B1 (de) | 1977-04-30 |
Family
ID=5907477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL1975178013A PL92966B1 (de) | 1974-02-15 | 1975-02-13 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3921409A (de) |
| DE (1) | DE2407227B1 (de) |
| ES (1) | ES434740A1 (de) |
| GB (1) | GB1485902A (de) |
| PL (1) | PL92966B1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2451764C2 (de) * | 1974-10-31 | 1976-09-23 | Rheinstahl Ag, 4300 Essen | Abdichtung zwischen kappe und bruchschild eines schildausbaugestelles |
| DE2517732C2 (de) * | 1975-04-22 | 1977-01-20 | Kloeckner Werke Ag | Spaltabdichtung zwischen dem rückragenden Teil des Hangendschildes und dem Bruchschfld eines Schildausbaugestelles |
| GB1494284A (en) * | 1975-07-19 | 1977-12-07 | Gullick Dobson Ltd | Self-advancing mine roof supports |
| ZA762055B (en) * | 1976-04-08 | 1977-05-25 | Dowty Mining Equipment Ltd | Mine roorf support |
| DE2622888B2 (de) * | 1976-05-21 | 1978-03-16 | Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum | Schildausbaugestell |
| GB2239286B (en) * | 1989-12-23 | 1994-03-02 | Meco Mining Equip | Mine roof support |
| US10774642B1 (en) * | 2019-05-05 | 2020-09-15 | Liaoning University | Hydraulic support unit and hydraulic support for anti-rock burst roadway |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA839498A (en) * | 1970-04-21 | Evgenievich Yazvitsky Pavel | Mine roof support assembly | |
| CA832741A (en) * | 1970-01-27 | Vasilievich Martynov Boris | Mechanized hydraulic timbering | |
| NL279454A (de) * | 1961-06-09 | |||
| DE1224248B (de) * | 1964-11-17 | 1966-09-08 | Hermann Schwarz Kommanditgesel | Ausbaugestell und damit durchfuehrbares Abbauverfahren fuer Kohlenfloeze |
| HU162717B (de) * | 1971-03-05 | 1973-04-28 |
-
1974
- 1974-02-15 DE DE19742407227 patent/DE2407227B1/de not_active Ceased
-
1975
- 1975-02-05 US US547450A patent/US3921409A/en not_active Expired - Lifetime
- 1975-02-10 GB GB5631/75A patent/GB1485902A/en not_active Expired
- 1975-02-13 PL PL1975178013A patent/PL92966B1/pl unknown
- 1975-02-14 ES ES434740A patent/ES434740A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1485902A (en) | 1977-09-14 |
| DE2407227B1 (de) | 1975-06-05 |
| ES434740A1 (es) | 1976-12-16 |
| US3921409A (en) | 1975-11-25 |
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