CS253555B2 - Forward reinforcing equipment for forward reinforcing ceiling joist - Google Patents
Forward reinforcing equipment for forward reinforcing ceiling joist Download PDFInfo
- Publication number
- CS253555B2 CS253555B2 CS803247A CS324780A CS253555B2 CS 253555 B2 CS253555 B2 CS 253555B2 CS 803247 A CS803247 A CS 803247A CS 324780 A CS324780 A CS 324780A CS 253555 B2 CS253555 B2 CS 253555B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- joist
- reinforcement
- piston
- sliding piston
- drive mechanism
- Prior art date
Links
- 230000003014 reinforcing effect Effects 0.000 title claims description 21
- 230000002787 reinforcement Effects 0.000 claims description 58
- 230000007246 mechanism Effects 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000009347 mechanical transmission Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000003825 pressing Methods 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
- E21D23/066—Pivoted cantilever extensions therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Geology (AREA)
- Body Structure For Vehicles (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Bridges Or Land Bridges (AREA)
- Pivots And Pivotal Connections (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792918411 DE2918411A1 (de) | 1979-05-08 | 1979-05-08 | Ausbaurahmen fuer den strebausbau o.dgl. |
| DE19792942093 DE2942093C2 (de) | 1979-10-18 | 1979-10-18 | Schwenkeinrichtung für eine Vorpfändkappe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS253555B2 true CS253555B2 (en) | 1987-11-12 |
Family
ID=25779009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS803247A CS253555B2 (en) | 1979-05-08 | 1980-05-08 | Forward reinforcing equipment for forward reinforcing ceiling joist |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4347021A (enExample) |
| AU (1) | AU535255B2 (enExample) |
| CS (1) | CS253555B2 (enExample) |
| ES (1) | ES8103263A1 (enExample) |
| FR (1) | FR2456210A1 (enExample) |
| GB (1) | GB2048355A (enExample) |
| PL (1) | PL123706B1 (enExample) |
| YU (1) | YU43472B (enExample) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3107209A1 (de) * | 1981-02-26 | 1982-09-09 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Kappenanstellvorrichtung |
| DE3115984A1 (de) * | 1981-04-22 | 1982-11-25 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Kappenanstellvorrichtung |
| FR2576058B1 (fr) * | 1985-01-15 | 1987-12-31 | Bennes Marrel | Pile de soutenement marchant, notamment pour les mines |
| GB2182704B (en) * | 1985-11-08 | 1989-01-18 | Dobson Park Ind | Mine roof supports |
| DE3605236A1 (de) * | 1986-02-19 | 1987-08-20 | Gewerk Eisenhuette Westfalia | Steuereinrichtung fuer untertaegige ausbaueinheiten |
| GB2192659B (en) * | 1986-07-15 | 1990-04-11 | Gullick Dobson Ltd | Mine roof support roof engaging device |
| GB2196371B (en) * | 1986-10-15 | 1990-05-09 | Gullick Dobson Ltd | Mine roof supports |
| DE102008029085B3 (de) * | 2008-06-20 | 2010-01-28 | Bucyrus Dbt Europe Gmbh | Schildkappe für einen Schildausbau |
| CN109838265B (zh) * | 2019-03-18 | 2024-04-02 | 中国矿业大学 | 一种沿空留巷端头支架迁移时保护顶板托盘的装置 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1230745B (de) * | 1965-03-06 | 1966-12-22 | Hoesch Bergbautechnik G M B H | An einer Kappe angelenkte Vorpfaendkappe |
| DE1224249B (de) * | 1965-05-31 | 1966-09-08 | Hermann Schwarz Kommanditgesel | Ausbaugestell fuer einen schreitenden Grubenausbau |
| GB1234662A (enExample) * | 1968-01-25 | 1971-06-09 | ||
| GB1270115A (en) * | 1969-03-05 | 1972-04-12 | Bonser Engineering Ltd | Improvements in or relating to mine roof support devices |
| DE2153496C3 (de) * | 1971-10-27 | 1978-12-14 | Thyssen Industrie Ag, 4300 Essen | Schreitendes Strebausbaugestell |
| US3848928A (en) * | 1973-02-12 | 1974-11-19 | Taiheiyo Coal Mining Co Ltd | Pantographic wall protector and automatic controlling device thereof |
| FR2263370A1 (en) * | 1974-03-04 | 1975-10-03 | Bennes Marrel | Mine gallery roof support - has top member connected to swinging boom by cylinder operated intermediate arm |
| GB1517763A (en) * | 1974-07-02 | 1978-07-12 | Winkler J | Underground mine roof support |
| DE2507263C2 (de) * | 1975-02-20 | 1984-09-13 | Johannes 4300 Essen Winkler | Schildausbau mit Stabilisierungseinrichtung |
| SU665098A1 (ru) | 1977-09-27 | 1979-05-30 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Угольный Институт (Кузниуи) | Перекрытие секции механизированной крепи |
-
1980
- 1980-05-02 GB GB8014660A patent/GB2048355A/en not_active Withdrawn
- 1980-05-06 PL PL1980224052A patent/PL123706B1/pl unknown
- 1980-05-06 FR FR8010060A patent/FR2456210A1/fr active Granted
- 1980-05-07 ES ES491245A patent/ES8103263A1/es not_active Expired
- 1980-05-07 AU AU58154/80A patent/AU535255B2/en not_active Ceased
- 1980-05-08 US US06/147,896 patent/US4347021A/en not_active Expired - Lifetime
- 1980-05-08 YU YU1228/80A patent/YU43472B/xx unknown
- 1980-05-08 CS CS803247A patent/CS253555B2/cs unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU5815480A (en) | 1980-11-13 |
| ES491245A0 (es) | 1981-02-16 |
| US4347021A (en) | 1982-08-31 |
| PL224052A1 (enExample) | 1981-02-27 |
| PL123706B1 (en) | 1982-11-30 |
| FR2456210A1 (fr) | 1980-12-05 |
| AU535255B2 (en) | 1984-03-08 |
| ES8103263A1 (es) | 1981-02-16 |
| GB2048355A (en) | 1980-12-10 |
| FR2456210B1 (enExample) | 1983-08-05 |
| YU122880A (en) | 1983-04-30 |
| YU43472B (en) | 1989-08-31 |
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