AT239727B - Retractable support device for moving longwall mining - Google Patents

Retractable support device for moving longwall mining

Info

Publication number
AT239727B
AT239727B AT186561A AT186561A AT239727B AT 239727 B AT239727 B AT 239727B AT 186561 A AT186561 A AT 186561A AT 186561 A AT186561 A AT 186561A AT 239727 B AT239727 B AT 239727B
Authority
AT
Austria
Prior art keywords
moving
support device
retractable support
longwall mining
longwall
Prior art date
Application number
AT186561A
Other languages
German (de)
Inventor
Karl Maria Dipl Ing Groetschel
Original Assignee
Karl Maria Dipl Ing Groetschel
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 DEG30180A external-priority patent/DE1158467B/en
Application filed by Karl Maria Dipl Ing Groetschel filed Critical Karl Maria Dipl Ing Groetschel
Application granted granted Critical
Publication of AT239727B publication Critical patent/AT239727B/en

Links

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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/006—Caps for supporting mine roofs characterised by the material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/0206—Hydraulically operated extension devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
    • 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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith

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)
  • Actuator (AREA)
  • Bridges Or Land Bridges (AREA)
  • Paper (AREA)
AT186561A 1960-04-01 1961-03-07 Retractable support device for moving longwall mining AT239727B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEG29358A DE1149679B (en) 1960-04-01 1960-04-01 Device for automatic locking and unlocking of self-supporting caps to be plucked
DEG29853A DE1152982B (en) 1960-04-01 1960-06-11 Device for the mechanical locking and unlocking of one or more of a support element from a support element by means of locking elements cantilevered caps
DEG30180A DE1158467B (en) 1960-07-28 1960-07-28 Device for the hydraulic actuation of the locking of a retractable support element for longwall construction self-supporting pre-fixed caps

Publications (1)

Publication Number Publication Date
AT239727B true AT239727B (en) 1965-04-26

Family

ID=27210584

Family Applications (1)

Application Number Title Priority Date Filing Date
AT186561A AT239727B (en) 1960-04-01 1961-03-07 Retractable support device for moving longwall mining

Country Status (5)

Country Link
US (1) US3217498A (en)
AT (1) AT239727B (en)
BE (1) BE602123A (en)
DE (2) DE1149679B (en)
GB (1) GB983551A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8719200D0 (en) * 1987-08-13 1987-09-23 Dowty Mining Equipment Ltd Roof supports

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069100B (en) * 1959-11-19
US1469360A (en) * 1920-07-23 1923-10-02 Niles Bement Pond Co Clamp and grip chuck
US2749712A (en) * 1949-11-25 1956-06-12 Gerlach Karl Mine supporting structure for working mines
DE1022992B (en) * 1951-05-15 1958-01-23 Gutehoffnungshuette Sterkrade Pit support cap with articulated connection
DE199149C (en) * 1954-01-29
US2884272A (en) * 1955-01-19 1959-04-28 Hans Gerlach Roof support structure for mine workings
GB950451A (en) * 1959-02-28 1964-02-26 Wilfrid George Reid Improvements in the jointing of plaster board and like structural materials

Also Published As

Publication number Publication date
BE602123A (en) 1961-10-02
US3217498A (en) 1965-11-16
DE1149679B (en) 1963-06-06
DE1152982B (en) 1963-08-22
GB983551A (en) 1965-02-17

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