PL223796A1 - - Google Patents
Info
- Publication number
- PL223796A1 PL223796A1 PL22379680A PL22379680A PL223796A1 PL 223796 A1 PL223796 A1 PL 223796A1 PL 22379680 A PL22379680 A PL 22379680A PL 22379680 A PL22379680 A PL 22379680A PL 223796 A1 PL223796 A1 PL 223796A1
- Authority
- PL
- Poland
Links
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
- E21D23/0454—Trailing plates; Coal face or goaf side sprags
-
- 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
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
- E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
- E21D23/0039—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member and supported by a strut or by a row of struts parallel to the working face
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT333079A AT360935B (de) | 1979-05-03 | 1979-05-03 | Ausbaubock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL223796A1 true PL223796A1 (de) | 1981-02-27 |
Family
ID=3548895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL22379680A PL223796A1 (de) | 1979-05-03 | 1980-04-26 |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT360935B (de) |
| DE (1) | DE3015664A1 (de) |
| GB (1) | GB2050482A (de) |
| PL (1) | PL223796A1 (de) |
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 |
| FR2576058B1 (fr) * | 1985-01-15 | 1987-12-31 | Bennes Marrel | Pile de soutenement marchant, notamment pour les mines |
| DE3530482A1 (de) * | 1985-08-27 | 1987-03-12 | Ruhrkohle Ag | Unterzug zum vorpfaenden des streckenausbaus im untertagebetrieb |
| GB2182704B (en) * | 1985-11-08 | 1989-01-18 | Dobson Park Ind | Mine roof supports |
| GB2188665B (en) * | 1986-04-01 | 1990-02-21 | Dobson Park Ind | Mine roof supports |
| GB8703496D0 (en) * | 1987-02-14 | 1987-03-18 | Dowty Mining Equipment Ltd | Mine roof support |
| GB8707235D0 (en) * | 1987-03-26 | 1987-04-29 | Dowty Hucknall Ltd | Roof support |
| RU2721666C1 (ru) * | 2016-06-10 | 2020-05-22 | Сандвик Интеллекчуал Проперти Аб | Устройство для активного временного крепления кровли выработки |
| CN114790906A (zh) * | 2021-08-15 | 2022-07-26 | 山西汾西矿业（集团）有限责任公司 | 综采工作面设备回撤通道的顶板加强防护方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2709225C2 (de) * | 1977-03-03 | 1979-04-12 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Vorpfändeinrichtung für hydraulischen Schreitausbau |
| DE2727414C2 (de) * | 1977-06-18 | 1979-07-12 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Vorpfändeinrichtung für hydraulischen Schreitausbau |
| DE2819172C2 (de) * | 1978-05-02 | 1985-01-24 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Vorpfändeinrichtung für hydraulischen Schreitausbau |
-
1979
- 1979-05-03 AT AT333079A patent/AT360935B/de not_active IP Right Cessation
-
1980
- 1980-04-16 GB GB8012575A patent/GB2050482A/en not_active Withdrawn
- 1980-04-23 DE DE19803015664 patent/DE3015664A1/de not_active Withdrawn
- 1980-04-26 PL PL22379680A patent/PL223796A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB2050482A (en) | 1981-01-07 |
| DE3015664A1 (de) | 1980-11-13 |
| ATA333079A (de) | 1980-07-15 |
| AT360935B (de) | 1981-02-10 |