FR2360745A2 - Etai hydraulique de mine - Google Patents

Etai hydraulique de mine

Info

Publication number
FR2360745A2
FR2360745A2 FR7623545A FR7623545A FR2360745A2 FR 2360745 A2 FR2360745 A2 FR 2360745A2 FR 7623545 A FR7623545 A FR 7623545A FR 7623545 A FR7623545 A FR 7623545A FR 2360745 A2 FR2360745 A2 FR 2360745A2
Authority
FR
France
Prior art keywords
load
cap
intermediate block
pit prop
telescopic 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.)
Granted
Application number
FR7623545A
Other languages
English (en)
Other versions
FR2360745B2 (fr
Inventor
Karoly Balazs
Jozsef Korbuly
Laszio Nemeth
Janos Viragh
Laszio Zachar
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.)
Banyaszati Kutato Intezet
Original Assignee
Banyaszati Kutato Intezet
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 Banyaszati Kutato Intezet filed Critical Banyaszati Kutato Intezet
Priority to FR7623545A priority Critical patent/FR2360745A2/fr
Publication of FR2360745A2 publication Critical patent/FR2360745A2/fr
Application granted granted Critical
Publication of FR2360745B2 publication Critical patent/FR2360745B2/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • E21D15/54—Details of the ends of props
    • E21D15/55—Details of the ends of props of prop heads or feet

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)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

L'invention concerne un étai hydraulique de mine capable de supporter sûrement les charges même lorsque les forces engendrées par les charges agissent excentriquement sur l'étai. Le présent etai est caractérisé par sa partie supérieure du corps de valve qui est munie d'un lamage conique concentrique se rétrécissant vers l'intérieur dont le fond est perpendiculaire à l'axe de l'étai. Il comporte par ailleurs un corps hydraulique faisant ressort précontraint par la tête de l'étai, ledit corps pouvant être complété par un insert. Application aux étais de mine.
FR7623545A 1976-08-02 1976-08-02 Etai hydraulique de mine Granted FR2360745A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7623545A FR2360745A2 (fr) 1976-08-02 1976-08-02 Etai hydraulique de mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7623545A FR2360745A2 (fr) 1976-08-02 1976-08-02 Etai hydraulique de mine

Publications (2)

Publication Number Publication Date
FR2360745A2 true FR2360745A2 (fr) 1978-03-03
FR2360745B2 FR2360745B2 (fr) 1983-01-28

Family

ID=9176450

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7623545A Granted FR2360745A2 (fr) 1976-08-02 1976-08-02 Etai hydraulique de mine

Country Status (1)

Country Link
FR (1) FR2360745A2 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2093284A (en) * 1936-06-27 1937-09-14 Blackhawk Mfg Co Work engagement means for jacks
GB679882A (en) * 1949-05-24 1952-09-24 Groetschel Karl Maria Improvements in lagging structures for mines
DE924022C (de) * 1952-07-04 1955-02-24 Ringfeder Gmbh Im Druckstueck eines Grubenstempels mittels Kugelgelenkes beweglich angeordnete Kronenplatte
FR1146171A (fr) * 1955-02-14 1957-11-07 Dobson Ltd W E & F Perfectionnements apportés aux étais porteurs de charges
DE971164C (de) * 1944-02-04 1958-12-18 F W Moll Soehne Maschinenfabri Grubenstempelkopf
DE1134048B (de) * 1961-08-28 1962-08-02 Hermann Schwarz Kommanditgesel Vorrichtung zum Setzen mehrteiliger Gruben-ausbaumittel, insbesondere Grubenstempel
FR1354734A (fr) * 1962-05-12 1964-03-06 Dispositif pour l'augmentation supplémentaire de la charge de mise en place d'étançons hydrauliques de mines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2093284A (en) * 1936-06-27 1937-09-14 Blackhawk Mfg Co Work engagement means for jacks
DE971164C (de) * 1944-02-04 1958-12-18 F W Moll Soehne Maschinenfabri Grubenstempelkopf
GB679882A (en) * 1949-05-24 1952-09-24 Groetschel Karl Maria Improvements in lagging structures for mines
DE924022C (de) * 1952-07-04 1955-02-24 Ringfeder Gmbh Im Druckstueck eines Grubenstempels mittels Kugelgelenkes beweglich angeordnete Kronenplatte
FR1146171A (fr) * 1955-02-14 1957-11-07 Dobson Ltd W E & F Perfectionnements apportés aux étais porteurs de charges
DE1134048B (de) * 1961-08-28 1962-08-02 Hermann Schwarz Kommanditgesel Vorrichtung zum Setzen mehrteiliger Gruben-ausbaumittel, insbesondere Grubenstempel
FR1354734A (fr) * 1962-05-12 1964-03-06 Dispositif pour l'augmentation supplémentaire de la charge de mise en place d'étançons hydrauliques de mines

Also Published As

Publication number Publication date
FR2360745B2 (fr) 1983-01-28

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