FR1176775A - Mine prop valve - Google Patents

Mine prop valve

Info

Publication number
FR1176775A
FR1176775A FR1176775DA FR1176775A FR 1176775 A FR1176775 A FR 1176775A FR 1176775D A FR1176775D A FR 1176775DA FR 1176775 A FR1176775 A FR 1176775A
Authority
FR
France
Prior art keywords
mine prop
prop valve
valve
mine
prop
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
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.)
HOESCH WESTFALENHUETTE AG
Original Assignee
HOESCH WESTFALENHUETTE AG
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 HOESCH WESTFALENHUETTE AG filed Critical HOESCH WESTFALENHUETTE AG
Application granted granted Critical
Publication of FR1176775A publication Critical patent/FR1176775A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/512—Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Control Of Presses (AREA)
  • Ink Jet (AREA)
FR1176775D 1956-06-21 1957-06-18 Mine prop valve Expired FR1176775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW19284A DE1013245B (en) 1956-06-21 1956-06-21 Hydraulic pit ram

Publications (1)

Publication Number Publication Date
FR1176775A true FR1176775A (en) 1959-04-15

Family

ID=7596449

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1176775D Expired FR1176775A (en) 1956-06-21 1957-06-18 Mine prop valve

Country Status (5)

Country Link
BE (1) BE558508A (en)
DE (1) DE1013245B (en)
FR (1) FR1176775A (en)
GB (1) GB866239A (en)
NL (1) NL218204A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL218917A (en) * 1956-10-16
DE1193458B (en) * 1958-08-11 1965-05-26 Dobson Ltd W E & F Wandering pit support
DE1134947B (en) * 1960-03-23 1962-08-23 Dowty Mining Equipment Ltd Wandering pit lining to support the hanging wall
DE1153705B (en) * 1960-10-01 1963-09-05 Rheinstahl Gmbh Wanheim Hydraulic pit ram
NL277490A (en) * 1961-04-20
BE635501A (en) * 1962-07-27 1964-01-27

Also Published As

Publication number Publication date
NL218204A (en)
GB866239A (en) 1961-04-26
DE1013245B (en) 1957-08-08
BE558508A (en)

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