GB2052615B - Hydraulic roof-support frame - Google Patents

Hydraulic roof-support frame

Info

Publication number
GB2052615B
GB2052615B GB7921664A GB7921664A GB2052615B GB 2052615 B GB2052615 B GB 2052615B GB 7921664 A GB7921664 A GB 7921664A GB 7921664 A GB7921664 A GB 7921664A GB 2052615 B GB2052615 B GB 2052615B
Authority
GB
United Kingdom
Prior art keywords
support frame
hydraulic roof
roof
hydraulic
frame
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
GB7921664A
Other versions
GB2052615A (en
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.)
Hemscheidt Hermann Maschinenfabrik GmbH and Co
Original Assignee
Hemscheidt Hermann Maschinenfabrik GmbH and Co
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 Hemscheidt Hermann Maschinenfabrik GmbH and Co filed Critical Hemscheidt Hermann Maschinenfabrik GmbH and Co
Priority to GB7921664A priority Critical patent/GB2052615B/en
Publication of GB2052615A publication Critical patent/GB2052615A/en
Application granted granted Critical
Publication of GB2052615B publication Critical patent/GB2052615B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/066—Pivoted cantilever extensions therefor

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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
GB7921664A 1979-06-21 1979-06-21 Hydraulic roof-support frame Expired GB2052615B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7921664A GB2052615B (en) 1979-06-21 1979-06-21 Hydraulic roof-support frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7921664A GB2052615B (en) 1979-06-21 1979-06-21 Hydraulic roof-support frame

Publications (2)

Publication Number Publication Date
GB2052615A GB2052615A (en) 1981-01-28
GB2052615B true GB2052615B (en) 1983-03-16

Family

ID=10506001

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7921664A Expired GB2052615B (en) 1979-06-21 1979-06-21 Hydraulic roof-support frame

Country Status (1)

Country Link
GB (1) GB2052615B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2182704B (en) * 1985-11-08 1989-01-18 Dobson Park Ind Mine roof supports
FR2610986B1 (en) * 1987-02-12 1991-03-15 Bennes Marrel TELESCOPIC HAT FOR SUPPORT IN A SUBTERRANEAN MINE OPERATED BY DRESSING AND METHOD OF USE FOR OPERATING THE MINE
GB8703496D0 (en) * 1987-02-14 1987-03-18 Dowty Mining Equipment Ltd Mine roof support

Also Published As

Publication number Publication date
GB2052615A (en) 1981-01-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee