ES8402387A1 - Disposicion de control hidraulica para explotaciones mineras subterraneas. - Google Patents
Disposicion de control hidraulica para explotaciones mineras subterraneas.Info
- Publication number
- ES8402387A1 ES8402387A1 ES521807A ES521807A ES8402387A1 ES 8402387 A1 ES8402387 A1 ES 8402387A1 ES 521807 A ES521807 A ES 521807A ES 521807 A ES521807 A ES 521807A ES 8402387 A1 ES8402387 A1 ES 8402387A1
- Authority
- ES
- Spain
- Prior art keywords
- cylinder
- control
- hydraulic control
- control arrangement
- face
- 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
- 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
- E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
-
- 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
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)
Abstract
DISPOSITIVO DE CONTROL HIDRAULICO PARA EXPLOTACIONES MINERAS SUBTERRANEAS. COMPRENDE UN CILINDRO DE DESPLAZAMIENTO (2) Y UN CILINDRO DE REGULACION (19), QUE ORIGINA A TRAVES DE UNA VALVULA DE PASO (26), EL MOVIMIENTO DEL CILINDRO DE EMPUJE (28). EL VOLUMEN DE LA COLUMNA DEL CONTROL VIENE DADO POR UN TUBO (6) QUE PENETRA EN EL VASTAGO DEL PISTON HUECO (3) DEL CILINDRO DE DESPLAZAMIENTO Y VA PROVISTO DE UNA VALVULA DE RETENCION (9) EN EL EXTREMO. EXISTE UNA VALVULA LIMITADORA DE PRESION (22), AJUSTABLE A DIFERENTES VALORES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3222051A DE3222051C2 (de) | 1982-06-11 | 1982-06-11 | Hydraulische Steuerung |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8402387A1 true ES8402387A1 (es) | 1984-01-16 |
ES521807A0 ES521807A0 (es) | 1984-01-16 |
Family
ID=6165862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES521807A Granted ES521807A0 (es) | 1982-06-11 | 1983-04-25 | Disposicion de control hidraulica para explotaciones mineras subterraneas. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4586424A (es) |
DE (1) | DE3222051C2 (es) |
ES (1) | ES521807A0 (es) |
ZA (1) | ZA834290B (es) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3402584C2 (de) * | 1984-01-26 | 1986-06-12 | Bochumer Eisenhütte Heintzmann GmbH & Co KG, 4630 Bochum | Hydraulische Gleichlaufsteuerung |
DE3518162C1 (de) * | 1985-05-21 | 1986-04-24 | Bochumer Eisenhütte Heintzmann GmbH & Co KG, 4630 Bochum | Vorrichtung zur UEberwachung des Gleichlaufs eines Rueckzylinders und eines Kappen-Schiebezylinders |
US5025733A (en) * | 1989-12-12 | 1991-06-25 | Elio Pierobon | Railroad support tie replacement device with track locking device |
US9209833B1 (en) * | 2015-06-25 | 2015-12-08 | Emc Corporation | Methods and apparatus for rational compression and decompression of numbers |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3769881A (en) * | 1970-06-17 | 1973-11-06 | K Aoki | Hydraulic device |
DE2608467A1 (de) * | 1976-03-01 | 1977-09-08 | Siemens Ag | Einrichtung zur stellungsrueckmeldung bei einem hydraulischen stellantrieb mit raeumlich getrennt angeordnetem arbeitszylinder |
DE2631479A1 (de) * | 1976-07-13 | 1978-01-19 | Transform Verstaerkungsmasch | Arbeitskolbenvorrichtung |
PT68274A (en) * | 1978-07-11 | 1978-08-01 | A A Ribeiro De Almeida | Device applicable to presses and metal bending presses to syncronize the movements of the hydraulic cylinders and control slider cross member |
DE2928150C2 (de) * | 1979-07-12 | 1981-12-17 | Bochumer Eisenhütte Heintzmann GmbH & Co, 4630 Bochum | Schildausbaugestell |
DE3000866C2 (de) * | 1980-01-11 | 1982-06-16 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Hydraulische Steuerung für ein Schreitausbaugestell |
DE3002818C2 (de) * | 1980-01-26 | 1984-02-23 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Einrichtung zur Steuerung hydraulischer Vorschubzylinder, insbesondere für den Vorschub von Schiebekappen eines Schreitausbaus |
US4409884A (en) * | 1981-03-25 | 1983-10-18 | Mcdonnell Douglas Corporation | Synchronization cylinder |
US4394102A (en) * | 1981-12-04 | 1983-07-19 | Clipp Control Corporation | Servo amplification system |
-
1982
- 1982-06-11 DE DE3222051A patent/DE3222051C2/de not_active Expired
-
1983
- 1983-04-25 ES ES521807A patent/ES521807A0/es active Granted
- 1983-05-24 US US06/497,738 patent/US4586424A/en not_active Expired - Fee Related
- 1983-06-10 ZA ZA834290A patent/ZA834290B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
US4586424A (en) | 1986-05-06 |
DE3222051C2 (de) | 1984-10-11 |
ZA834290B (en) | 1984-03-28 |
ES521807A0 (es) | 1984-01-16 |
DE3222051A1 (de) | 1983-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19971001 |