FR2455673A2 - CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STANDARDS OR THE LIKE - Google Patents
CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STANDARDS OR THE LIKEInfo
- Publication number
- FR2455673A2 FR2455673A2 FR8007948A FR8007948A FR2455673A2 FR 2455673 A2 FR2455673 A2 FR 2455673A2 FR 8007948 A FR8007948 A FR 8007948A FR 8007948 A FR8007948 A FR 8007948A FR 2455673 A2 FR2455673 A2 FR 2455673A2
- Authority
- FR
- France
- Prior art keywords
- pressure
- seals
- standards
- control device
- valve
- 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.)
- Granted
Links
- 238000009434 installation Methods 0.000 abstract 1
- 238000007789 sealing Methods 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
- E21D23/26—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)
Abstract
LE DISPOSITIF PERFECTIONNE SELON CETTE ADDITION EST DU TYPE DECRIT, MAIS LA PRESSION DE MISE HORS CIRCUIT DU SYSTEME AUTOMATIQUE ASSOCIE AUX VALVES DE MISE EN CHARGE COMPLEMENTAIRE 15 EST SENSIBLEMENT EGALE A LA PRESSION DE REPONSE DE LA VALVE DE LIMITATION DE PRESSION 12 DES ETANCONS 10. EN MEME TEMPS ON REGLE LE DEBIT DE CETTE VALVE DE LIMITATION DE PRESSION 12 A UNE VALEUR MAXIMUM, DE TELLE SORTE QU'IL SOIT AU MOINS EGAL AU DEBIT MAXIMUM DE LA VALVE DE POSE 11 DES ETANCONS 10. DE CE FAIT, IL EST POSSIBLED'ASSURER LA POSE DES ETANCONS AVEC UNE FORCE VOISINE DE LEUR CHARGE NOMINALE SANS QU'IL PUISSE SE PRODUIRE UN ENDOMMAGEMENT DES VALVES DE LIMITATION DE PRESSION SERVANT DE SECURITE VIS-A-VIS D'UNE SURCHARGE DES ETANCONS.THE DEVICE PERFECTED ACCORDING TO THIS ADDITION IS OF THE TYPE DESCRIBED, BUT THE SWITCHING PRESSURE OF THE AUTOMATIC SYSTEM ASSOCIATED WITH THE ADDITIONAL LOADING VALVES 15 IS SENSITIVELY EQUAL TO THE RESPONSE PRESSURE OF THE PRESSURE LIMITATION VALVE 12 OF THE STANKS 10. AT THE SAME TIME THE FLOW RATE OF THIS PRESSURE LIMITATION VALVE 12 IS SET TO A MAXIMUM VALUE, SO THAT IT IS AT LEAST EQUAL TO THE MAXIMUM FLOW OF THE SEALING VALVE 11 OF THE SEALS 10. ACCORDINGLY, IT IS POSSIBLE '' ENSURE THE INSTALLATION OF THE SEALS WITH A FORCE NEAR THEIR NOMINAL LOAD WITHOUT DAMAGE TO THE PRESSURE LIMITATION VALVES SERVING AS SAFETY AGAINST AN OVERLOAD OF THE SEALS.
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 |
---|---|
FR2455673A2 true FR2455673A2 (en) | 1980-11-28 |
FR2455673B2 FR2455673B2 (en) | 1987-05-07 |
Family
ID=6068183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8007948A Expired FR2455673B2 (en) | 1979-04-12 | 1980-04-09 | CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STANDARDS OR THE LIKE |
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) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2509831A1 (en) * | 1981-07-17 | 1983-01-21 | Gewerk Eisenhuette Westfalia | RE-POSITION CONTROL FOR HYDRAULIC WATER SUPPORT, AS WELL AS HYDRAULIC CONTROL NON-RETURN VALVE |
FR2524545A1 (en) * | 1982-04-06 | 1983-10-07 | Gewerk Eisenhuette Westfalia | DEVICE FOR CONTROLLING THE STROKE OF A GROUP OF CYLINDERS OF A HYDRAULIC SUPPORT SYSTEM, PARTICULARLY FOR SETTING THE STANDARDS OF A WALKING SUPPORT |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Citations (5)
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 |
FR1562647A (en) * | 1967-10-21 | 1969-04-04 | ||
GB1180578A (en) * | 1967-03-06 | 1970-02-04 | Podmoskovny G Pk I Exi Gornogo | Advancing Mine Roof Supports |
FR2152589A1 (en) * | 1971-09-17 | 1973-04-27 | Gewerk Eisenhuette Westfalia |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1750834A1 (en) * | 1968-06-10 | 1971-04-29 | Gewerk Eisenhuette Westfalia | Pressure relief valve cartridge with piston O-ring seal |
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 PL PL1980223346A patent/PL125322B1/en unknown
- 1980-04-09 FR FR8007948A patent/FR2455673B2/en not_active Expired
- 1980-04-10 BE BE0/200176A patent/BE882725A/en not_active IP Right Cessation
- 1980-04-10 ZA ZA00802130A patent/ZA802130B/en unknown
Patent Citations (5)
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 |
FR1562647A (en) * | 1967-10-21 | 1969-04-04 | ||
FR2152589A1 (en) * | 1971-09-17 | 1973-04-27 | Gewerk Eisenhuette Westfalia |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2509831A1 (en) * | 1981-07-17 | 1983-01-21 | Gewerk Eisenhuette Westfalia | RE-POSITION CONTROL FOR HYDRAULIC WATER SUPPORT, AS WELL AS HYDRAULIC CONTROL NON-RETURN VALVE |
FR2524545A1 (en) * | 1982-04-06 | 1983-10-07 | Gewerk Eisenhuette Westfalia | DEVICE FOR CONTROLLING THE STROKE OF A GROUP OF CYLINDERS OF A HYDRAULIC SUPPORT SYSTEM, PARTICULARLY FOR SETTING THE STANDARDS OF A WALKING SUPPORT |
Also Published As
Publication number | Publication date |
---|---|
GB2096223A (en) | 1982-10-13 |
AU5710080A (en) | 1980-10-16 |
DE2914884C2 (en) | 1987-05-14 |
AU533562B2 (en) | 1983-12-01 |
PL125322B1 (en) | 1983-04-30 |
ZA802130B (en) | 1981-05-27 |
BE882725A (en) | 1980-07-31 |
GB2096223B (en) | 1983-05-11 |
GB2047316A (en) | 1980-11-26 |
DE2914884A1 (en) | 1980-10-30 |
FR2455673B2 (en) | 1987-05-07 |
CA1138303A (en) | 1982-12-28 |
PL223346A1 (en) | 1981-01-30 |
GB2047316B (en) | 1983-04-20 |
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