GB927765A - Improvements in or relating to telescopic hydraulic pit props - Google Patents
Improvements in or relating to telescopic hydraulic pit propsInfo
- Publication number
- GB927765A GB927765A GB3143561A GB3143561A GB927765A GB 927765 A GB927765 A GB 927765A GB 3143561 A GB3143561 A GB 3143561A GB 3143561 A GB3143561 A GB 3143561A GB 927765 A GB927765 A GB 927765A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- ram
- base
- chamber
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 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
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
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)
- Medicinal Preparation (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR837619A FR1273471A (fr) | 1960-09-02 | 1960-09-02 | Perfectionnement apporté aux étançons hydrauliques télescopiques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB927765A true GB927765A (en) | 1963-06-06 |
Family
ID=8738365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3143561A Expired GB927765A (en) | 1960-09-02 | 1961-08-31 | Improvements in or relating to telescopic hydraulic pit props |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE607500A (ru) |
| DE (1) | DE1167299B (ru) |
| FR (1) | FR1273471A (ru) |
| GB (1) | GB927765A (ru) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252476A (en) * | 1978-09-12 | 1981-02-24 | Bochumer Eisenhutte Heintzmann Gmbh & Co. | Hydraulically operated mine prop with safety valve |
| FR2518640A1 (fr) * | 1981-12-21 | 1983-06-24 | Gewerk Eisenhuette Westfalia | Etancon telescopique hydraulique, en particulier pour soutenement marchant souterrain, et surtout pour pile-bouclier de soutenement |
| GB2176846A (en) * | 1985-06-19 | 1987-01-07 | Kloeckner Becorit Gmbh | Three part telescopic prop |
| CN111878128A (zh) * | 2020-08-06 | 2020-11-03 | 山东中煤工矿物资集团有限公司 | 一种新型液压支柱 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1226972B (de) * | 1964-10-20 | 1966-10-20 | Gewerk Eisenhuette Westfalia | Hydraulischer Doppel-Teleskopstempel |
| AT339237B (de) * | 1975-09-09 | 1977-10-10 | Voest Ag | Hydraulischer grubenstempel |
| DE4323462C2 (de) * | 1993-07-14 | 1995-05-04 | Vos Richard Grubenausbau Gmbh | Ausbaustempel für den Untertageeinsatz mit integriertem Druckbegrenzungsventil |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE493811A (ru) * | ||||
| US1685697A (en) * | 1926-07-30 | 1928-09-25 | Nathan M Guinsburg | Jack |
| DE1063101B (de) * | 1956-02-20 | 1959-08-13 | Gutehoffnungshuette Sterkrade | Hydraulischer Grubenstempel |
| DE1076603B (de) * | 1957-01-07 | 1960-03-03 | Deutschland Ag Maschf | Hydraulisch-pneumatischer Grubenstempel |
-
0
- BE BE607500D patent/BE607500A/xx unknown
-
1960
- 1960-09-02 FR FR837619A patent/FR1273471A/fr not_active Expired
-
1961
- 1961-08-31 GB GB3143561A patent/GB927765A/en not_active Expired
- 1961-09-01 DE DEH43542A patent/DE1167299B/de active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252476A (en) * | 1978-09-12 | 1981-02-24 | Bochumer Eisenhutte Heintzmann Gmbh & Co. | Hydraulically operated mine prop with safety valve |
| FR2518640A1 (fr) * | 1981-12-21 | 1983-06-24 | Gewerk Eisenhuette Westfalia | Etancon telescopique hydraulique, en particulier pour soutenement marchant souterrain, et surtout pour pile-bouclier de soutenement |
| GB2176846A (en) * | 1985-06-19 | 1987-01-07 | Kloeckner Becorit Gmbh | Three part telescopic prop |
| CN111878128A (zh) * | 2020-08-06 | 2020-11-03 | 山东中煤工矿物资集团有限公司 | 一种新型液压支柱 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1167299B (de) | 1964-04-09 |
| FR1273471A (fr) | 1961-10-13 |
| BE607500A (ru) |
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