FR2131217A5 - - Google Patents

Info

Publication number
FR2131217A5
FR2131217A5 FR7134600A FR7134600A FR2131217A5 FR 2131217 A5 FR2131217 A5 FR 2131217A5 FR 7134600 A FR7134600 A FR 7134600A FR 7134600 A FR7134600 A FR 7134600A FR 2131217 A5 FR2131217 A5 FR 2131217A5
Authority
FR
France
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
FR7134600A
Other languages
French (fr)
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Application granted granted Critical
Publication of FR2131217A5 publication Critical patent/FR2131217A5/fr
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
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E21D23/085—Advancing mechanisms forming parts of the roof supports acting on a conveyor or a guide for the mining machine
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/10—Anchorings for conveyors

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)
  • Mechanical Engineering (AREA)
  • Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
FR7134600A 1971-03-27 1971-09-27 Expired FR2131217A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712115014 DE2115014A1 (en) 1971-03-27 1971-03-27 Extension frame with three movable frames

Publications (1)

Publication Number Publication Date
FR2131217A5 true FR2131217A5 (en) 1972-11-10

Family

ID=5803025

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7134600A Expired FR2131217A5 (en) 1971-03-27 1971-09-27

Country Status (3)

Country Link
DE (1) DE2115014A1 (en)
FR (1) FR2131217A5 (en)
GB (1) GB1388566A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116950687B (en) * 2023-09-20 2023-12-01 太原西北二环高速公路发展有限公司 Tunnel supporting system penetrating through multilayer goaf and construction method thereof

Also Published As

Publication number Publication date
GB1388566A (en) 1975-03-26
DE2115014A1 (en) 1972-10-12

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Legal Events

Date Code Title Description
ST Notification of lapse