ES472521A1 - Dispositivo de empuje casi continuo por medio de una plura- lidad de gatos hidraulicos - Google Patents
Dispositivo de empuje casi continuo por medio de una plura- lidad de gatos hidraulicosInfo
- Publication number
- ES472521A1 ES472521A1 ES472521A ES472521A ES472521A1 ES 472521 A1 ES472521 A1 ES 472521A1 ES 472521 A ES472521 A ES 472521A ES 472521 A ES472521 A ES 472521A ES 472521 A1 ES472521 A1 ES 472521A1
- Authority
- ES
- Spain
- Prior art keywords
- working
- jacks
- reset
- face defining
- hydraulic
- 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
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
- E21F13/086—Armoured conveyors shifting devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/08—Guiding the machine
- E21C35/12—Guiding the machine along a conveyor for the cut material
- E21C35/14—Equipment for pressing the conveyor towards the working face
-
- 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
- E21D23/20—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms for sequential movement, e.g. one behind the other
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)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Lining And Supports For Tunnels (AREA)
- Earth Drilling (AREA)
- Actuator (AREA)
Abstract
Dispositivo de empuje casi continuo por medio de una pluralidad de gastos hidráulicos, cuyas cámaras de trabajo están normalmente alimentadas en paralelo, cada una por una canalización de alimentación de fluido hidráulico bajo presión alimentada por un generador de presión hidráulica, que incluye unos medios controlados de cierre de las canalizaciones de alimentación, así como unos medios controlados de puesta en comunicación con el depósito de las cámaras de trabajo, siendo dichos gatos unos gatos de doble efecto que incluyen cada uno un pistón que presenta una cara de trabajo definiendo la cámara de trabajo y una cara de rearme definiendo una cámara de rearme, y que puede desplazarse entre una posición inicial y una posición de final de carrera de trabajo, e inversamente.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7725269A FR2400630A1 (fr) | 1977-08-18 | 1977-08-18 | Dispositif de poussage au moyen de verins hydrauliques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES472521A1 true ES472521A1 (es) | 1979-04-01 |
Family
ID=9194601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES472521A Expired ES472521A1 (es) | 1977-08-18 | 1978-08-11 | Dispositivo de empuje casi continuo por medio de una plura- lidad de gatos hidraulicos |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4248136A (es) |
| JP (1) | JPS5445466A (es) |
| AT (1) | AT359953B (es) |
| AU (1) | AU522531B2 (es) |
| BE (1) | BE869724A (es) |
| CA (1) | CA1093938A (es) |
| DE (1) | DE2833725A1 (es) |
| ES (1) | ES472521A1 (es) |
| FR (1) | FR2400630A1 (es) |
| GB (1) | GB2002063B (es) |
| PL (1) | PL113648B1 (es) |
| YU (1) | YU194878A (es) |
| ZA (1) | ZA784426B (es) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7306108B2 (en) | 2004-04-13 | 2007-12-11 | Berry Plastics Corporation | Closure with vents for venting during molding of a liner, method of forming a liner in a closure, and device for forming a liner in a closure |
| CN109826928B (zh) * | 2019-02-01 | 2023-11-17 | 浙江工业大学 | 一种直线运动变速变行程合成系统 |
| CN116181721B (zh) * | 2023-02-16 | 2025-07-25 | 中国铁建重工集团股份有限公司 | 一种钻机液压控制系统及救援钻机 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR959904A (es) | 1950-04-07 | |||
| US1987003A (en) * | 1934-07-13 | 1935-01-08 | Myron W Dole | Duplex steam engine |
| US2890658A (en) * | 1956-07-10 | 1959-06-16 | Skf Svenska Kullagerfab Ab | Pneumatic liquid pressure pump |
| FR1361466A (fr) * | 1963-04-09 | 1964-05-22 | Hispano Suiza Sa | Perfectionnements apportés aux installations de commande hydraulique à appareils récepteurs à double effet |
| DE1910107U (de) | 1964-10-12 | 1965-02-18 | Licentia Gmbh | Anordnung von spulenkernen. |
| DE1963353A1 (de) * | 1969-12-18 | 1971-06-24 | Gewerk Eisenhuette Westfalia | Hubsteuerung eines Rueckzylinders |
-
1977
- 1977-08-18 FR FR7725269A patent/FR2400630A1/fr active Granted
-
1978
- 1978-08-01 DE DE19782833725 patent/DE2833725A1/de not_active Withdrawn
- 1978-08-02 AT AT560178A patent/AT359953B/de not_active IP Right Cessation
- 1978-08-02 GB GB7831932A patent/GB2002063B/en not_active Expired
- 1978-08-03 ZA ZA00784426A patent/ZA784426B/xx unknown
- 1978-08-03 CA CA308,664A patent/CA1093938A/fr not_active Expired
- 1978-08-07 US US05/931,729 patent/US4248136A/en not_active Expired - Lifetime
- 1978-08-08 AU AU38736/78A patent/AU522531B2/en not_active Expired
- 1978-08-11 BE BE7846571A patent/BE869724A/xx not_active IP Right Cessation
- 1978-08-11 ES ES472521A patent/ES472521A1/es not_active Expired
- 1978-08-15 YU YU01948/78A patent/YU194878A/xx unknown
- 1978-08-16 PL PL1978209081A patent/PL113648B1/pl unknown
- 1978-08-17 JP JP9959378A patent/JPS5445466A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| YU194878A (en) | 1982-08-31 |
| PL113648B1 (en) | 1980-12-31 |
| AU3873678A (en) | 1980-02-14 |
| FR2400630A1 (fr) | 1979-03-16 |
| CA1093938A (fr) | 1981-01-20 |
| DE2833725A1 (de) | 1979-03-01 |
| JPS5445466A (en) | 1979-04-10 |
| ZA784426B (en) | 1979-07-25 |
| AT359953B (de) | 1980-12-10 |
| FR2400630B1 (es) | 1980-09-12 |
| ATA560178A (de) | 1980-05-15 |
| GB2002063B (en) | 1982-01-27 |
| GB2002063A (en) | 1979-02-14 |
| PL209081A1 (pl) | 1979-05-21 |
| US4248136A (en) | 1981-02-03 |
| AU522531B2 (en) | 1982-06-10 |
| BE869724A (fr) | 1979-02-12 |
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| ES472521A1 (es) | Dispositivo de empuje casi continuo por medio de una plura- lidad de gatos hidraulicos | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19990405 |