NL6503406A - - Google Patents
Info
- Publication number
- NL6503406A NL6503406A NL6503406A NL6503406A NL6503406A NL 6503406 A NL6503406 A NL 6503406A NL 6503406 A NL6503406 A NL 6503406A NL 6503406 A NL6503406 A NL 6503406A NL 6503406 A NL6503406 A NL 6503406A
- Authority
- NL
- Netherlands
- Prior art keywords
- valve
- ram
- pressure
- line
- fluid
- Prior art date
Links
- 239000003245 coal Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting 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
- E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
-
- 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
- E21D23/08—Advancing mechanisms
- E21D23/081—Advancing mechanisms forming parts of the roof supports
- E21D23/085—Advancing mechanisms forming parts of the roof supports acting on a conveyor or a guide for the mining machine
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)
- Fluid-Pressure Circuits (AREA)
- Actuator (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Press Drives And Press Lines (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB11932/64A GB1098628A (en) | 1964-03-20 | 1964-03-20 | Improvements in or relating to advancing roof supports |
Publications (1)
Publication Number | Publication Date |
---|---|
NL6503406A true NL6503406A (cs) | 1965-09-21 |
Family
ID=9995302
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL256189D NL256189A (cs) | 1964-03-20 | ||
NL6503406A NL6503406A (cs) | 1964-03-20 | 1965-03-17 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL256189D NL256189A (cs) | 1964-03-20 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3313211A (cs) |
DE (2) | DE1205034B (cs) |
FR (1) | FR1268264A (cs) |
GB (2) | GB967163A (cs) |
NL (2) | NL6503406A (cs) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1458672B1 (de) * | 1951-01-28 | 1970-02-26 | Becorit Grubenausbau Gmbh | Steuerung für einen wandernden hydraulischen Strebausbau |
DE2901054A1 (de) * | 1979-01-12 | 1980-07-17 | Salzgitter Maschinen Ag | Vorlaeufiger streckenausbau fuer durchbaubetriebe in strecken des untertaegigen bergbaus |
GB2116618B (en) * | 1982-03-06 | 1985-11-20 | Dowty Mining Equipment Ltd | Mine roof supports |
DE202010001750U1 (de) | 2010-02-02 | 2010-06-10 | Karl Hamacher Gmbh | Untertägige Medienversorgungsanordnung |
CN110333017B (zh) * | 2019-07-29 | 2020-12-01 | 宿州市金鼎安全技术股份有限公司 | 一种基于光纤光栅传感器的煤矿巷道顶板应力监测装置 |
CN110778346B (zh) * | 2019-11-15 | 2020-07-03 | 西部黄金伊犁有限责任公司 | 一种用于发生矿井冒顶时的保护装置 |
CN111878140A (zh) * | 2020-06-05 | 2020-11-03 | 范文 | 一种薄煤层开采用液压支架 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1069548B (cs) * | 1959-11-26 | |||
US1994974A (en) * | 1930-06-21 | 1935-03-19 | Oilgear Co | Differential resistance valve |
US2714505A (en) * | 1948-05-01 | 1955-08-02 | Joy Mfg Co | Apparatus for mine roof control |
US2657028A (en) * | 1949-06-15 | 1953-10-27 | Joy Mfg Co | Walking jack |
GB735294A (en) * | 1952-03-04 | 1955-08-17 | Bolton & Company Engineers Ltd | Improvements relating to fluid-operated roof-supporting units for use in mines and like places |
GB742850A (en) * | 1952-12-06 | 1956-01-04 | Hydrauliques Pour L Ind Minier | Improved device for supporting the roofs of mine galleries |
GB745679A (en) * | 1953-07-08 | 1956-02-29 | Dowty Auto Units Ltd | Improvements in mine roof supports |
AT184539B (de) * | 1954-04-12 | 1956-01-25 | Kloeckner Bergbau Victor Icker | Wandernder Ausbau mit durch ein Druckmittel betätigten Ausbaugespannen |
GB823128A (en) * | 1955-02-23 | 1959-11-04 | Dowty Mining Equipment Ltd | Improvements in and relating to mine roof support systems |
FR1153880A (fr) * | 1955-04-04 | 1958-03-28 | Dowty Mining Equipment Ltd | Installation et appareil de soutènement hydraulique pour mines |
US2859022A (en) * | 1955-04-04 | 1958-11-04 | Dowty Mining Equipment Ltd | Hydraulic roof supports and conveyor feed jacks |
FR1148920A (fr) * | 1956-03-21 | 1957-12-18 | Commande automatique de mise en marche d'un ou d'étançons automoteurs | |
FR1184882A (fr) * | 1956-10-19 | 1959-07-27 | Eisenwerk Wanheim Gmbh | Soutènement mécanisé à étançons hydrauliques groupés par groupes doubles |
FR1190532A (fr) * | 1957-07-05 | 1959-10-13 | Dobson Ltd W E & F | Perfectionnements apportés aux supports de plafonds pour mines souterraines |
FR1201174A (fr) * | 1957-08-10 | 1959-12-29 | Gewerk Eisenhuette Westfalia | Procédé et dispositif pour la commande d'un soutènement hydraulique, utilisable notamment dans les mines |
DE1131626B (de) * | 1958-04-14 | 1962-06-20 | Kloeckner Werke Ag | Verfahren und Vorrichtung zur Steuerung des Raub- und Setzvorganges von hydraulischen Strebausbaurahmen |
US2989950A (en) * | 1958-06-04 | 1961-06-27 | Lockman Nathan | Pneumatic control device |
FR1271386A (fr) * | 1959-10-12 | 1961-09-08 | Coal Industry Patents Ltd | Supports du toit des galeries de mines |
FR1337134A (fr) * | 1961-10-30 | 1963-09-06 | Dowty Mining Equipment Ltd | Perfectionnements aux supports de toit de mine |
GB991009A (en) * | 1962-06-07 | 1965-05-05 | Dowty Mining Equipment Ltd | Mining apparatus |
-
0
- NL NL256189D patent/NL256189A/xx unknown
-
1959
- 1959-09-25 GB GB32684/59A patent/GB967163A/en not_active Expired
-
1960
- 1960-09-17 DE DEC22366A patent/DE1205034B/de active Pending
- 1960-09-24 FR FR839475A patent/FR1268264A/fr not_active Expired
-
1964
- 1964-03-20 GB GB11932/64A patent/GB1098628A/en not_active Expired
-
1965
- 1965-03-11 US US439026A patent/US3313211A/en not_active Expired - Lifetime
- 1965-03-15 DE DE1965C0035321 patent/DE1292605C2/de not_active Expired
- 1965-03-17 NL NL6503406A patent/NL6503406A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE1292605B (de) | 1969-04-17 |
GB1098628A (en) | 1968-01-10 |
US3313211A (en) | 1967-04-11 |
DE1292605C2 (de) | 1973-05-17 |
NL256189A (cs) | |
GB967163A (en) | 1964-08-19 |
FR1268264A (fr) | 1961-07-28 |
DE1205034B (de) | 1965-11-18 |
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