ZA827321B - Self-advancing roof supports - Google Patents

Self-advancing roof supports

Info

Publication number
ZA827321B
ZA827321B ZA827321A ZA827321A ZA827321B ZA 827321 B ZA827321 B ZA 827321B ZA 827321 A ZA827321 A ZA 827321A ZA 827321 A ZA827321 A ZA 827321A ZA 827321 B ZA827321 B ZA 827321B
Authority
ZA
South Africa
Prior art keywords
self
roof supports
advancing roof
advancing
supports
Prior art date
Application number
ZA827321A
Inventor
Kenneth David Prescot
Charles John Holland
Original Assignee
Dobson Park Ind
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 Dobson Park Ind filed Critical Dobson Park Ind
Publication of ZA827321B publication Critical patent/ZA827321B/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
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports

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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
ZA827321A 1982-01-16 1982-10-06 Self-advancing roof supports ZA827321B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08201227A GB2115046B (en) 1982-01-16 1982-01-16 Self-advancing roof supports

Publications (1)

Publication Number Publication Date
ZA827321B true ZA827321B (en) 1983-08-31

Family

ID=10527672

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA827321A ZA827321B (en) 1982-01-16 1982-10-06 Self-advancing roof supports

Country Status (5)

Country Link
AU (1) AU540247B2 (en)
DE (1) DE3301262A1 (en)
GB (1) GB2115046B (en)
IN (1) IN156673B (en)
ZA (1) ZA827321B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143882B (en) * 1983-07-23 1986-11-05 Dowty Mining Equipment Ltd Shield supports suitable for use in mines
DE3400771A1 (en) * 1984-01-12 1985-07-18 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen EXTENSION FRAME, IN PARTICULAR SHIELD EXTENSION FRAME, WITH A LIFTING DEVICE FOR LIFTING THE RECESSED RUNNERS
HU194596B (en) * 1985-08-22 1988-02-29 Oroszlanyi Szenbanyak Supporting unit at underground widework for mechanized supporting equipment
DE3539801A1 (en) * 1985-11-09 1987-05-14 Gewerk Eisenhuette Westfalia Powered support assembly, in particular shield-type powered support assembly, with walking mechanism
GB2237837A (en) * 1989-11-11 1991-05-15 Meco Mining Equip Mine roof support assembly
DE4110681A1 (en) * 1991-04-03 1992-10-08 Bochumer Eisen Heintzmann SCREW EXTENSION RACK FOR MINING UNDERGROUND COMPANIES
CN102748054B (en) * 2012-07-03 2014-08-13 三一重型装备有限公司 Hydraulic bracket pushing mechanism and hydraulic bracket
CN104196552A (en) * 2014-07-16 2014-12-10 三一重型装备有限公司 Bottom lifting device and hydraulic support

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1503750A (en) * 1975-05-22 1978-03-15 Fletcher Sutcliffe Wild Ltd Mining equipment

Also Published As

Publication number Publication date
AU540247B2 (en) 1984-11-08
IN156673B (en) 1985-10-12
DE3301262A1 (en) 1983-07-28
GB2115046A (en) 1983-09-01
GB2115046B (en) 1985-06-26
AU8949082A (en) 1983-09-08

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