CS219345B2 - Hydraulic connection of the slot cover - Google Patents

Hydraulic connection of the slot cover Download PDF

Info

Publication number
CS219345B2
CS219345B2 CS24679A CS24679A CS219345B2 CS 219345 B2 CS219345 B2 CS 219345B2 CS 24679 A CS24679 A CS 24679A CS 24679 A CS24679 A CS 24679A CS 219345 B2 CS219345 B2 CS 219345B2
Authority
CS
Czechoslovakia
Prior art keywords
valve
hydraulic
hydraulically operated
joist
switching
Prior art date
Application number
CS24679A
Other languages
Czech (cs)
English (en)
Inventor
Walter Weirich
Harry Rosenberg
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 CS219345B2 publication Critical patent/CS219345B2/cs

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)
  • Floor Finish (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
CS24679A 1978-02-25 1979-01-10 Hydraulic connection of the slot cover CS219345B2 (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 (1)

Publication Number Publication Date
CS219345B2 true CS219345B2 (en) 1983-03-25

Family

ID=6032957

Family Applications (1)

Application Number Title Priority Date Filing Date
CS24679A CS219345B2 (en) 1978-02-25 1979-01-10 Hydraulic connection of the slot cover

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
PL213644A1 (pl) 1979-11-19
PL119297B1 (en) 1981-12-31
DE2808205C2 (de) 1985-10-10
FR2418329A1 (fr) 1979-09-21
ES478021A1 (es) 1979-12-01
DE2808205A1 (de) 1979-09-06
FR2418329B1 (pl) 1983-05-27

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