GB1051783A - - Google Patents

Info

Publication number
GB1051783A
GB1051783A GB1051783DA GB1051783A GB 1051783 A GB1051783 A GB 1051783A GB 1051783D A GB1051783D A GB 1051783DA GB 1051783 A GB1051783 A GB 1051783A
Authority
GB
United Kingdom
Prior art keywords
base
roof
unit
jacks
intermediate unit
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
Publication date
Publication of GB1051783A publication Critical patent/GB1051783A/en
Expired legal-status Critical Current

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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0017—Pile type supports
    • E21D23/0026—Pile type supports comprising three walking elements
    • 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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor 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)
  • Framework For Endless Conveyors (AREA)

Abstract

1,051,783. Mine roof supports. GULLICK Ltd. March 1, 1965 [April 11, 1964], No.15067/ 64. Heading F1P. A self advancing mine roof support comprises two outer support units 10, 11 connected together at the front and rear by plates 34, 33 and an intermediate support unit 12 movable relative to the outer units in the direction of advance by hydraulic rams 28 connected between the base of the intermediate unit and the plate 33. The cylinders of the rams are fixed to the base of the intermediate unit and carry additional piston rods 30 connected to a conveyer C. The intermediate unit has a single base supporting a roof bar on two jacks 25, and each outer unit has a rear base 13 supporting a roof bar 16 on two jacks 14, 15, and a forward base 17 connected to the rear base by an articulated link 18 and carrying by a single jack 23, a roof bar 22 articulated to the roof bars 16.
GB1051783D Expired GB1051783A (en)

Publications (1)

Publication Number Publication Date
GB1051783A true GB1051783A (en) 1900-01-01

Family

ID=1756589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1051783D Expired GB1051783A (en)

Country Status (1)

Country Link
GB (1) GB1051783A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1758675B1 (en) * 1967-07-19 1972-05-31 Gullick Ltd Migrating hydraulic longwall mining
US4195953A (en) * 1977-12-29 1980-04-01 Gewerkschaft Eisenhutte Westfalia Advance mechanism for a mine roof support assembly
US4560306A (en) * 1979-11-09 1985-12-24 Dobson Park Industries Limited Coal face support
CZ302937B6 (en) * 2010-11-02 2012-01-18 Ostroj A.S. Mechanical support unit intended particularly for very thick inclined coal seams

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1758675B1 (en) * 1967-07-19 1972-05-31 Gullick Ltd Migrating hydraulic longwall mining
US4195953A (en) * 1977-12-29 1980-04-01 Gewerkschaft Eisenhutte Westfalia Advance mechanism for a mine roof support assembly
USRE31346E (en) * 1977-12-29 1983-08-16 Gewerschaft Eisenhutte Westfalia Advance mechanism for a mine roof support assembly
US4560306A (en) * 1979-11-09 1985-12-24 Dobson Park Industries Limited Coal face support
CZ302937B6 (en) * 2010-11-02 2012-01-18 Ostroj A.S. Mechanical support unit intended particularly for very thick inclined coal seams

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