FR2418329A1 - Systeme de commande hydraulique pour dispositif de recouvrement de joint prevu sur le chapeau ou sur le bouclier de foudroyage d'un soutenement marchant - Google Patents

Systeme de commande hydraulique pour dispositif de recouvrement de joint prevu sur le chapeau ou sur le bouclier de foudroyage d'un soutenement marchant

Info

Publication number
FR2418329A1
FR2418329A1 FR7901228A FR7901228A FR2418329A1 FR 2418329 A1 FR2418329 A1 FR 2418329A1 FR 7901228 A FR7901228 A FR 7901228A FR 7901228 A FR7901228 A FR 7901228A FR 2418329 A1 FR2418329 A1 FR 2418329A1
Authority
FR
France
Prior art keywords
cylinder
valve
control system
low pressure
hydraulic control
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
FR7901228A
Other languages
English (en)
French (fr)
Other versions
FR2418329B1 (cs
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of FR2418329A1 publication Critical patent/FR2418329A1/fr
Application granted granted Critical
Publication of FR2418329B1 publication Critical patent/FR2418329B1/fr
Granted legal-status Critical Current

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)
FR7901228A 1978-02-25 1979-01-18 Systeme de commande hydraulique pour dispositif de recouvrement de joint prevu sur le chapeau ou sur le bouclier de foudroyage d'un soutenement marchant Granted FR2418329A1 (fr)

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
FR2418329A1 true FR2418329A1 (fr) 1979-09-21
FR2418329B1 FR2418329B1 (cs) 1983-05-27

Family

ID=6032957

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901228A Granted FR2418329A1 (fr) 1978-02-25 1979-01-18 Systeme de commande hydraulique pour dispositif de recouvrement de joint prevu sur le chapeau ou sur le bouclier de foudroyage d'un soutenement marchant

Country Status (5)

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

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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE657410A (cs) * 1963-12-24 1965-04-16
GB1117312A (en) * 1964-10-16 1968-06-19 Coal Industry Patents Ltd Self advancing roof supports in inclined mineral seams
FR2128636A1 (cs) * 1971-03-05 1972-10-20 Sanyaszati Kutato Inteze
DE2350482A1 (de) * 1973-10-08 1975-04-10 Hemscheidt Maschf Hermann Hydraulischer schildausbau
DE2502109A1 (de) * 1974-01-19 1975-07-24 Dowty Mining Equipment Ltd Grubendeckenabstuetzung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE657410A (cs) * 1963-12-24 1965-04-16
GB1117312A (en) * 1964-10-16 1968-06-19 Coal Industry Patents Ltd Self advancing roof supports in inclined mineral seams
FR2128636A1 (cs) * 1971-03-05 1972-10-20 Sanyaszati Kutato Inteze
DE2350482A1 (de) * 1973-10-08 1975-04-10 Hemscheidt Maschf Hermann Hydraulischer schildausbau
DE2502109A1 (de) * 1974-01-19 1975-07-24 Dowty Mining Equipment Ltd Grubendeckenabstuetzung

Also Published As

Publication number Publication date
PL119297B1 (en) 1981-12-31
ES478021A1 (es) 1979-12-01
PL213644A1 (pl) 1979-11-19
CS219345B2 (en) 1983-03-25
DE2808205A1 (de) 1979-09-06
FR2418329B1 (cs) 1983-05-27
DE2808205C2 (de) 1985-10-10

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Legal Events

Date Code Title Description
ST Notification of lapse