GB1258064A - - Google Patents

Info

Publication number
GB1258064A
GB1258064A GB1258064DA GB1258064A GB 1258064 A GB1258064 A GB 1258064A GB 1258064D A GB1258064D A GB 1258064DA GB 1258064 A GB1258064 A GB 1258064A
Authority
GB
United Kingdom
Prior art keywords
signal
line
output
pulses
appears
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
Application number
Other languages
English (en)
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
Priority claimed from DE19671583073 external-priority patent/DE1583073B1/de
Application filed filed Critical
Publication of GB1258064A publication Critical patent/GB1258064A/en
Expired legal-status Critical Current

Links

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
    • 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
    • E21D23/12—Control, e.g. using remote control
    • E21D23/14—Effecting automatic sequential movement of supports, e.g. one behind the other
    • E21D23/144—Measuring the advance of support units with respect to internal points of reference, e.g. with respect to neighboring support units or extension of a cylinder
    • 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)
  • Mechanical Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
GB1258064D 1967-12-14 1968-11-27 Expired GB1258064A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671583073 DE1583073B1 (de) 1967-12-14 1967-12-14 Selbsttaetige Steuerung zum Ausrichten und Schwenken eines Strebes im Bergbau

Publications (1)

Publication Number Publication Date
GB1258064A true GB1258064A (enExample) 1971-12-22

Family

ID=5679416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1258064D Expired GB1258064A (enExample) 1967-12-14 1968-11-27

Country Status (3)

Country Link
US (1) US3531159A (enExample)
FR (1) FR1595647A (enExample)
GB (1) GB1258064A (enExample)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1261110A (en) * 1969-03-26 1972-01-19 Gullick Dobson Ltd Improvements in or relating to fluidic logic controlled hydraulic mine roof support systems
FR2278909A1 (fr) * 1974-06-21 1976-02-13 Ruhrkohle Ag Procede et appareillage pour la commande des haveuses-chargeuses a tambours dans l'industrie miniere
US4093309A (en) * 1974-10-24 1978-06-06 Coal Industry (Patents) Ltd. Method of and apparatus for controlling advance of underground armored conveyors
US4111487A (en) * 1975-05-02 1978-09-05 Coal Industry (Patents) Limited Underground mining machine with longwall guidance system
DE2655087A1 (de) * 1975-12-23 1977-07-07 Gullick Dobson Ltd Vorrichtung zum erfassen der relativen stellungen einer reihe von ausbaugestellen im untertagebergbau
GB1576317A (en) * 1976-08-20 1980-10-08 Dobson Park Ind Control of self-advancing mine roof supports
FR2336545A1 (fr) * 1976-12-13 1977-07-22 Gullick Dobson Ltd Dispositif de controle et de commande des soutenements marchants de toit de mine
DE2714506C2 (de) * 1977-04-01 1982-06-16 Bergwerksverband Gmbh, 4300 Essen Verfahren und Einrichtung zur Überwachung und Steuerung von Strebausrüstungen
GB2066340B (en) * 1979-11-22 1983-03-16 Dowty Mining Equipment Ltd Mining apparatus
DE3126831C2 (de) * 1981-07-08 1984-07-26 Bergwerksverband Gmbh, 4300 Essen Verfahren zur Kontrolle der Geradhaltung der Schreitausbaufront und Vorrichtung zur Durchführung des Verfahrens
DE3207517C2 (de) * 1982-03-03 1985-09-05 Gebr. Eickhoff Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Steuerung für Ausbaugestelle des Untertagebergbaues
US4952000A (en) * 1989-04-24 1990-08-28 Thin Seam Miner Patent B.V., The Netherlands Method and apparatus for increasing the efficiency of highwall mining
DE4211340A1 (de) * 1992-04-04 1993-10-07 Hemscheidt Maschf Hermann Verfahren zum Abbau von Kohleflözen zum Schwenken des Strebes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1063468A (en) * 1964-10-26 1967-03-30 Dowty Electrics Ltd Mining apparatus
DE1206831B (de) * 1964-12-10 1965-12-16 Bergwerksverband Gmbh Verfahren zum automatischen Ruecken von Elemente einer Gruppe von solchen bildenden Ausbaueinheiten eines hydraulischen Strebausbaus

Also Published As

Publication number Publication date
US3531159A (en) 1970-09-29
FR1595647A (enExample) 1970-06-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee