PL213644A1 - Hydrauliczne sterowanie oslony szczelinowej,umieszczonej na stropnicy lub tarczy zawalowej obudowy kroczacej - Google Patents

Hydrauliczne sterowanie oslony szczelinowej,umieszczonej na stropnicy lub tarczy zawalowej obudowy kroczacej

Info

Publication number
PL213644A1
PL213644A1 PL21364479A PL21364479A PL213644A1 PL 213644 A1 PL213644 A1 PL 213644A1 PL 21364479 A PL21364479 A PL 21364479A PL 21364479 A PL21364479 A PL 21364479A PL 213644 A1 PL213644 A1 PL 213644A1
Authority
PL
Poland
Prior art keywords
trouble
sleeve
housing
valve plate
hydraulic control
Prior art date
Application number
PL21364479A
Other languages
English (en)
Other versions
PL119297B1 (en
Original Assignee
Gewerk Eisenhuette Westfalia
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 Gewerk Eisenhuette Westfalia filed Critical Gewerk Eisenhuette Westfalia
Publication of PL213644A1 publication Critical patent/PL213644A1/pl
Publication of PL119297B1 publication Critical patent/PL119297B1/pl

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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control
    • 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
    • E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support

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)
  • Fluid-Pressure Circuits (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Floor Finish (AREA)
PL21364479A 1978-02-25 1979-02-23 System for hydraulic control of the guard,fixed on roof-bar or on breaking down shield of walking propspomehhennym na verkhnjake ili na obruhhajuhhem gibke shafajuhhejj krepi PL119297B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782808205 DE2808205C2 (de) 1978-02-25 1978-02-25 Hydraulische Steuerung für eine an der Kappe oder an dem Bruchschild eines Schreitausbaus angeordnete Spaltabdeckung

Publications (2)

Publication Number Publication Date
PL213644A1 true PL213644A1 (pl) 1979-11-19
PL119297B1 PL119297B1 (en) 1981-12-31

Family

ID=6032957

Family Applications (1)

Application Number Title Priority Date Filing Date
PL21364479A PL119297B1 (en) 1978-02-25 1979-02-23 System for hydraulic control of the guard,fixed on roof-bar or on breaking down shield of walking propspomehhennym na verkhnjake ili na obruhhajuhhem gibke shafajuhhejj krepi

Country Status (5)

Country Link
CS (1) CS219345B2 (pl)
DE (1) DE2808205C2 (pl)
ES (1) ES478021A1 (pl)
FR (1) FR2418329A1 (pl)
PL (1) PL119297B1 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010026977B4 (de) * 2010-07-13 2016-06-02 Marco Systemanaslyse Und Entwicklung Gmbh Verfahren zur Schildsteuerung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6414602A (pl) * 1963-12-24 1965-06-25
GB1117312A (en) * 1964-10-16 1968-06-19 Coal Industry Patents Ltd Self advancing roof supports in inclined mineral seams
HU162717B (pl) * 1971-03-05 1973-04-28
GB1512001A (en) * 1974-01-19 1978-05-24 Dowty Mining Equipment Ltd Mine roof support

Also Published As

Publication number Publication date
DE2808205C2 (de) 1985-10-10
FR2418329A1 (fr) 1979-09-21
DE2808205A1 (de) 1979-09-06
ES478021A1 (es) 1979-12-01
PL119297B1 (en) 1981-12-31
CS219345B2 (en) 1983-03-25
FR2418329B1 (pl) 1983-05-27

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