PL223346A1 - - Google Patents
Info
- Publication number
- PL223346A1 PL223346A1 PL22334680A PL22334680A PL223346A1 PL 223346 A1 PL223346 A1 PL 223346A1 PL 22334680 A PL22334680 A PL 22334680A PL 22334680 A PL22334680 A PL 22334680A PL 223346 A1 PL223346 A1 PL 223346A1
- 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/26—Hydraulic or pneumatic control
-
- 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
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)
- Safety Valves (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Presses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2914884A DE2914884C2 (en) | 1979-04-12 | 1979-04-12 | Control device for a hydraulic ram removal with associated automatic repositioning |
Publications (2)
Publication Number | Publication Date |
---|---|
PL223346A1 true PL223346A1 (en) | 1981-01-30 |
PL125322B1 PL125322B1 (en) | 1983-04-30 |
Family
ID=6068183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL1980223346A PL125322B1 (en) | 1979-04-12 | 1980-04-09 | Apparatus for seating hydraulic mine props with a strong and uniform force |
Country Status (8)
Country | Link |
---|---|
AU (1) | AU533562B2 (en) |
BE (1) | BE882725A (en) |
CA (1) | CA1138303A (en) |
DE (1) | DE2914884C2 (en) |
FR (1) | FR2455673B2 (en) |
GB (2) | GB2096223B (en) |
PL (1) | PL125322B1 (en) |
ZA (1) | ZA802130B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3128279A1 (en) * | 1981-07-17 | 1983-02-03 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | ADJUSTMENT CONTROL FOR A HYDRAULIC STAMP EXTENSION AND HYDRAULICALLY CONTROLLED CHECK VALVE |
DE3212747A1 (en) * | 1982-04-06 | 1983-10-06 | Gewerk Eisenhuette Westfalia | DEVICE FOR STROKE CONTROL OF A CYLINDER GROUP OF A HYDRAULIC REMOVAL SYSTEM, IN PARTICULAR FOR SETTING THE STAMP OF A SCREAM REMOVAL UNIT |
DE3301674C1 (en) * | 1983-01-20 | 1984-01-05 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Control system for hydraulic stamps on walking frames |
GB2137314B (en) * | 1983-03-26 | 1986-07-23 | Dobson Park Ind | Valve for mine support |
PL146170B1 (en) * | 1984-12-10 | 1989-01-31 | Ct Kt Maszyn Gorniczych Komag | Apparatus for changing curability and mineablity of a mineral deposit |
DE3546278C1 (en) * | 1985-12-28 | 1987-07-02 | Bergwerksverband Gmbh | Repositioning control for longwall construction |
DE3931625C1 (en) * | 1989-09-22 | 1990-08-09 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal, De | Underground mine roof support - maintains constant residual pressure during advance |
GB9009859D0 (en) * | 1990-05-02 | 1990-06-27 | Meco Mining Equip | A mine roof support |
GB2274325B (en) * | 1993-01-13 | 1996-04-03 | Meco Mining Equip | A yield valve |
CN103775115A (en) * | 2014-01-21 | 2014-05-07 | 焦作欣扬程煤矿设备有限公司 | Side-sway shifting vertical pressure cylinder machine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1024167A (en) * | 1964-02-14 | 1966-03-30 | Dowty Mining Equipment Ltd | Roof support assembly suitable for use in mines |
GB1135942A (en) * | 1964-12-07 | 1968-12-11 | Groetschel Karl Maria | Improvements relating to roof supports for mine workings |
GB1180578A (en) * | 1967-03-06 | 1970-02-04 | Podmoskovny G Pk I Exi Gornogo | Advancing Mine Roof Supports |
DE1290109B (en) * | 1967-10-21 | 1969-03-06 | Gewerk Eisenhuette Westfalia | Stamp for expansion or bracing in the face / route transition |
DE1750834A1 (en) * | 1968-06-10 | 1971-04-29 | Gewerk Eisenhuette Westfalia | Pressure relief valve cartridge with piston O-ring seal |
DE2146502C3 (en) * | 1971-09-17 | 1982-04-29 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Valve arrangement for setting hydraulic pit rams with high setting force |
DE2749312C2 (en) * | 1977-11-04 | 1984-12-20 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Control device with automatic repositioning for hydraulic ram removal |
DE2803283C2 (en) * | 1978-01-26 | 1992-12-10 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Pressure relief valve for hydraulic pit rams |
-
1979
- 1979-04-12 DE DE2914884A patent/DE2914884C2/en not_active Expired
-
1980
- 1980-04-01 CA CA000348972A patent/CA1138303A/en not_active Expired
- 1980-04-02 AU AU57100/80A patent/AU533562B2/en not_active Ceased
- 1980-04-08 GB GB8215240A patent/GB2096223B/en not_active Expired
- 1980-04-08 GB GB8011620A patent/GB2047316B/en not_active Expired
- 1980-04-09 FR FR8007948A patent/FR2455673B2/en not_active Expired
- 1980-04-09 PL PL1980223346A patent/PL125322B1/en unknown
- 1980-04-10 ZA ZA00802130A patent/ZA802130B/en unknown
- 1980-04-10 BE BE0/200176A patent/BE882725A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AU5710080A (en) | 1980-10-16 |
GB2096223B (en) | 1983-05-11 |
ZA802130B (en) | 1981-05-27 |
CA1138303A (en) | 1982-12-28 |
PL125322B1 (en) | 1983-04-30 |
GB2047316B (en) | 1983-04-20 |
BE882725A (en) | 1980-07-31 |
DE2914884A1 (en) | 1980-10-30 |
GB2047316A (en) | 1980-11-26 |
GB2096223A (en) | 1982-10-13 |
DE2914884C2 (en) | 1987-05-14 |
FR2455673B2 (en) | 1987-05-07 |
FR2455673A2 (en) | 1980-11-28 |
AU533562B2 (en) | 1983-12-01 |