GB1285773A - Improvements relating to self-advancing roof supports for mine workings - Google Patents

Improvements relating to self-advancing roof supports for mine workings

Info

Publication number
GB1285773A
GB1285773A GB5035269A GB5035269A GB1285773A GB 1285773 A GB1285773 A GB 1285773A GB 5035269 A GB5035269 A GB 5035269A GB 5035269 A GB5035269 A GB 5035269A GB 1285773 A GB1285773 A GB 1285773A
Authority
GB
United Kingdom
Prior art keywords
supports
self
improvements relating
roof supports
mine workings
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
GB5035269A
Inventor
Karl Maria Groetschel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1285773A publication Critical patent/GB1285773A/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
    • E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices

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)
  • Soil Working Implements (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

1285773 Advancing mine roof supports K M GROETSCHEL 14 Oct 1969 [15 Oct 1968] 50352/69 Heading E1P In an advancing mine roof support assembly as disclosed for example in Specifications 1171944 or 1168793, the superstructure 2 of the inner support unit has its leading end set back from the leading ends of the outer supports 1 when all supports are in their rearward position by a distance a at least corresponding to that of the cutting step of a coal plough or by about one half of the cutting step of other types of coal winning machines. The superstructure 2 may be provided with a longitudinally adjustable extension piece detachably secured thereto, see Figs. 2 and 2A, not shown.
GB5035269A 1968-10-14 1969-10-14 Improvements relating to self-advancing roof supports for mine workings Expired GB1285773A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19686802324 DE6802324U (en) 1968-10-14 1968-10-14 HIKING EXTENSION UNIT

Publications (1)

Publication Number Publication Date
GB1285773A true GB1285773A (en) 1972-08-16

Family

ID=6594924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5035269A Expired GB1285773A (en) 1968-10-14 1969-10-14 Improvements relating to self-advancing roof supports for mine workings

Country Status (2)

Country Link
DE (1) DE6802324U (en)
GB (1) GB1285773A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278999A (en) * 2014-09-18 2015-01-14 中国煤炭科工集团太原研究院有限公司 Automatic bolt mesh laying step type temporary support for fully mechanized excavation faces

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108547651B (en) * 2018-06-11 2023-12-19 山东天晟机械装备股份有限公司 Advanced hydraulic support with full-section protection and anti-impact effects

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278999A (en) * 2014-09-18 2015-01-14 中国煤炭科工集团太原研究院有限公司 Automatic bolt mesh laying step type temporary support for fully mechanized excavation faces

Also Published As

Publication number Publication date
DE6802324U (en) 1969-01-30

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