PL73430B1 - - Google Patents
Download PDFInfo
- Publication number
- PL73430B1 PL73430B1 PL15947272A PL15947272A PL73430B1 PL 73430 B1 PL73430 B1 PL 73430B1 PL 15947272 A PL15947272 A PL 15947272A PL 15947272 A PL15947272 A PL 15947272A PL 73430 B1 PL73430 B1 PL 73430B1
- Authority
- PL
- Poland
- Prior art keywords
- jaws
- stands
- hydraulic cylinder
- thrust bearing
- stand
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 4
- 238000005065 mining Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 3
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000009428 plumbing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011435 rock Substances 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
- E21D23/0418—Positioning devices and stabilizing means for the props
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)
- Forging (AREA)
- Lining And Supports For Tunnels (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Jigs For Machine Tools (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1073971A AT310114B (de) | 1971-12-14 | 1971-12-14 | Einrichtung zum Geradestellen der Stempel eines Ausbaurahmens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL73430B1 true PL73430B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-09-15 |
Family
ID=3624358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL15947272A PL73430B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-12-14 | 1972-12-12 |
Country Status (11)
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030308A (en) * | 1976-05-21 | 1977-06-21 | Fletcher Sutcliffe Wild Limited | Mine roof supports |
| GB1546630A (en) * | 1976-12-29 | 1979-05-23 | Fletcher Sutcliffe Wild Ltd | Mine roof supports |
| DE3100093A1 (de) * | 1981-01-03 | 1982-08-05 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Vorrichtung zur begrenzung des ausbauwiderstandes eines hydraulischen ausbauschildes |
| FR2497872B1 (fr) * | 1981-01-13 | 1986-03-28 | Alsace Mines Potasse | Dispositif de positionnement hydraulique des etancons d'un ensemble hydraulique de soutenement |
| US5584611A (en) * | 1994-11-22 | 1996-12-17 | Long-Airdox | Roof support for underground excavations |
| US10774642B1 (en) * | 2019-05-05 | 2020-09-15 | Liaoning University | Hydraulic support unit and hydraulic support for anti-rock burst roadway |
| CN114673535A (zh) * | 2022-03-28 | 2022-06-28 | 中国矿业大学(北京) | 一种防止煤壁片帮的大倾角支撑装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB779791A (en) * | 1954-12-15 | 1957-07-24 | Dowty Mining Equipment Ltd | Improvements relating to end caps for pit-props |
| US3016992A (en) * | 1957-10-24 | 1962-01-16 | Wilson John Hart | Stabilizer for fluid cylinder plungers of high slenderness ratio |
| GB1107379A (en) * | 1964-08-11 | 1968-03-27 | Gullick Ltd | Improvements in or relating to pivotally supported members particularly of mine roof supports |
-
1971
- 1971-12-14 AT AT1073971A patent/AT310114B/de not_active IP Right Cessation
-
1972
- 1972-12-04 YU YU3010/72A patent/YU35180B/xx unknown
- 1972-12-07 HU HUOE184A patent/HU165109B/hu unknown
- 1972-12-12 FR FR7244221A patent/FR2163542B1/fr not_active Expired
- 1972-12-12 ES ES409544A patent/ES409544A1/es not_active Expired
- 1972-12-12 PL PL15947272A patent/PL73430B1/pl unknown
- 1972-12-13 SU SU721861584A patent/SU639472A3/ru active
- 1972-12-14 CS CS8609A patent/CS166831B2/cs unknown
- 1972-12-14 GB GB5766372A patent/GB1379417A/en not_active Expired
- 1972-12-14 US US00315238A patent/US3832856A/en not_active Expired - Lifetime
- 1972-12-14 JP JP12573972A patent/JPS5315443B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2259271A1 (de) | 1973-07-05 |
| JPS5315443B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1978-05-25 |
| YU301072A (en) | 1979-12-31 |
| JPS4876702A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-10-16 |
| SU639472A3 (ru) | 1978-12-25 |
| AT310114B (de) | 1973-09-25 |
| CS166831B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-03-29 |
| FR2163542A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-07-27 |
| DE2259271B2 (de) | 1975-07-10 |
| HU165109B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-06-28 |
| ES409544A1 (es) | 1975-11-16 |
| YU35180B (en) | 1980-09-25 |
| FR2163542B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-08-20 |
| US3832856A (en) | 1974-09-03 |
| GB1379417A (en) | 1975-01-02 |
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