FR1034189A - étançon hydraulique pour mines - Google Patents

étançon hydraulique pour mines

Info

Publication number
FR1034189A
FR1034189A FR1034189DA FR1034189A FR 1034189 A FR1034189 A FR 1034189A FR 1034189D A FR1034189D A FR 1034189DA FR 1034189 A FR1034189 A FR 1034189A
Authority
FR
France
Prior art keywords
mines
hydraulic prop
prop
hydraulic
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
Other languages
English (en)
Inventor
Campbell Ritchie
Josef Brand
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 filed Critical
Application granted granted Critical
Publication of FR1034189A publication Critical patent/FR1034189A/fr
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/58Devices for setting props or chocks
    • E21D15/585Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/005Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14Telescopic props
    • E21D15/44Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E21D15/45Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50Component parts or details of props
    • E21D15/51Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/517Extension elements
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50Component parts or details of props
    • E21D15/52Extensible units located above or below standard props
    • E21D15/526Extensible units located above or below standard props for step-by-step extension of the prop
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/58Devices for setting props or chocks
    • E21D15/585Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • E21D15/586Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Sealing Of Jars (AREA)
FR1034189D 1951-03-22 1951-03-20 étançon hydraulique pour mines Expired FR1034189A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB690751A GB711047A (en) 1951-03-22 1951-03-22 Hydraulic pit-prop

Publications (1)

Publication Number Publication Date
FR1034189A true FR1034189A (fr) 1953-07-20

Family

ID=9823011

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1034189D Expired FR1034189A (fr) 1951-03-22 1951-03-20 étançon hydraulique pour mines

Country Status (2)

Country Link
FR (1) FR1034189A (fr)
GB (1) GB711047A (fr)

Also Published As

Publication number Publication date
GB711047A (en) 1954-06-23

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