GB8923221D0 - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB8923221D0
GB8923221D0 GB898923221A GB8923221A GB8923221D0 GB 8923221 D0 GB8923221 D0 GB 8923221D0 GB 898923221 A GB898923221 A GB 898923221A GB 8923221 A GB8923221 A GB 8923221A GB 8923221 D0 GB8923221 D0 GB 8923221D0
Authority
GB
United Kingdom
Prior art keywords
mine roof
roof supports
supports
mine
roof
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.)
Granted
Application number
GB898923221A
Other versions
GB2236788B (en
GB2236788A (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.)
Gullick Dobson Ltd
Original Assignee
Gullick Dobson Ltd
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 Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Priority to GB8923221A priority Critical patent/GB2236788B/en
Publication of GB8923221D0 publication Critical patent/GB8923221D0/en
Publication of GB2236788A publication Critical patent/GB2236788A/en
Application granted granted Critical
Publication of GB2236788B publication Critical patent/GB2236788B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E21D23/04—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (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)
GB8923221A 1989-10-14 1989-10-14 Mine roof supports Expired - Fee Related GB2236788B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8923221A GB2236788B (en) 1989-10-14 1989-10-14 Mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8923221A GB2236788B (en) 1989-10-14 1989-10-14 Mine roof supports

Publications (3)

Publication Number Publication Date
GB8923221D0 true GB8923221D0 (en) 1989-11-29
GB2236788A GB2236788A (en) 1991-04-17
GB2236788B GB2236788B (en) 1993-05-26

Family

ID=10664624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8923221A Expired - Fee Related GB2236788B (en) 1989-10-14 1989-10-14 Mine roof supports

Country Status (1)

Country Link
GB (1) GB2236788B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4209515C1 (en) * 1992-03-24 1993-08-12 Bochumer Eisenhuette Heintzmann Gmbh & Co Kg, 4630 Bochum, De Walking walling-frame for mine gallery - has walking frame mounting with bridge over piston rod supporting lifting ram for floor skids
CN104695996B (en) * 2015-02-12 2018-04-03 武文成 It is a kind of to carry entirely from anti-skidding hydraulic support of being shifted elsewhere for garrison duty
CN108506034B (en) * 2018-03-20 2020-06-26 郑州合新科技有限公司 Circulating self-moving type roadway advance support hydraulic support
CN109595021B (en) * 2018-11-07 2020-05-05 郑州煤矿机械集团股份有限公司 Hydraulic support bottom lifting mechanism for coal fully-mechanized mining face

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3823682C2 (en) * 1988-07-13 1996-04-18 Westfalia Becorit Ind Tech Removal frame, in particular shield removal frame, with walking mechanism and prone lifting device

Also Published As

Publication number Publication date
GB2236788B (en) 1993-05-26
GB2236788A (en) 1991-04-17

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Legal Events

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

Effective date: 19941014