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 LIKE

Info

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
Application number
FR8007948A
Other languages
French (fr)
Other versions
FR2455673B2 (en
Inventor
Klaus Beckmann
Hans-Theodor Grisebach
Walter Weirich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of FR2455673A2 publication Critical patent/FR2455673A2/en
Application granted granted Critical
Publication of FR2455673B2 publication Critical patent/FR2455673B2/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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 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

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.

FR8007948A 1979-04-12 1980-04-09 CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STANDARDS OR THE LIKE Expired FR2455673B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792914884 DE2914884A1 (en) 1979-04-12 1979-04-12 DEVICE FOR SETTING HYDRAULIC PIT STAMP WITH HIGH AND EVEN SETTING FORCE

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) DE2914884A1 (en)
FR (1) FR2455673B2 (en)
GB (2) GB2096223B (en)
PL (1) PL125322B1 (en)
ZA (1) ZA802130B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
ZA802130B (en) 1981-05-27
PL223346A1 (en) 1981-01-30
DE2914884C2 (en) 1987-05-14
GB2047316A (en) 1980-11-26
DE2914884A1 (en) 1980-10-30
AU5710080A (en) 1980-10-16
CA1138303A (en) 1982-12-28
GB2096223B (en) 1983-05-11
BE882725A (en) 1980-07-31
AU533562B2 (en) 1983-12-01
GB2096223A (en) 1982-10-13
FR2455673B2 (en) 1987-05-07
PL125322B1 (en) 1983-04-30
GB2047316B (en) 1983-04-20

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