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WO2013120474A3 - Hydraulic circuit for longwall support - Google Patents

Hydraulic circuit for longwall support Download PDF

Info

Publication number
WO2013120474A3
WO2013120474A3 PCT/DE2013/000053 DE2013000053W WO2013120474A3 WO 2013120474 A3 WO2013120474 A3 WO 2013120474A3 DE 2013000053 W DE2013000053 W DE 2013000053W WO 2013120474 A3 WO2013120474 A3 WO 2013120474A3
Authority
WO
WIPO (PCT)
Prior art keywords
longwall
hydraulic circuit
support
pressure
warning signal
Prior art date
Application number
PCT/DE2013/000053
Other languages
German (de)
French (fr)
Other versions
WO2013120474A2 (en
Inventor
Gerhard WÜLFING
Wilfried Weigel
Original Assignee
Tiefenbach Control Systems 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 Tiefenbach Control Systems Gmbh filed Critical Tiefenbach Control Systems Gmbh
Priority to AU2013220787A priority Critical patent/AU2013220787B2/en
Priority to CN201380016356.8A priority patent/CN104169525B/en
Publication of WO2013120474A2 publication Critical patent/WO2013120474A2/en
Publication of WO2013120474A3 publication Critical patent/WO2013120474A3/en

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

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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

The invention relates to a hydraulic circuit for the longwall support in underground mining for supporting a longwall by means of a plurality of support shields, which hydraulic circuit comprises a pressure sensor (19) in the annular piston line (10) of each cylinder/piston unit (4). When a predetermined maximum pressure is reached, the pressure sensor (19) emits a pressure warning signal (28), by which the entire longwall can be depressurized by means of a longwall cut-off valve (11). The pressure warning signal (28) is locked with respect to any control signal for one of the hydraulic valves.
PCT/DE2013/000053 2012-02-18 2013-01-30 Hydraulic circuit for longwall support WO2013120474A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2013220787A AU2013220787B2 (en) 2012-02-18 2013-01-30 Hydraulic circuit for longwall support
CN201380016356.8A CN104169525B (en) 2012-02-18 2013-01-30 Hydraulic circuit for force piece

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012003087.8 2012-02-18
DE102012003087 2012-02-18

Publications (2)

Publication Number Publication Date
WO2013120474A2 WO2013120474A2 (en) 2013-08-22
WO2013120474A3 true WO2013120474A3 (en) 2014-05-22

Family

ID=47845675

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2013/000053 WO2013120474A2 (en) 2012-02-18 2013-01-30 Hydraulic circuit for longwall support

Country Status (4)

Country Link
CN (1) CN104169525B (en)
AU (1) AU2013220787B2 (en)
DE (1) DE102013001581A1 (en)
WO (1) WO2013120474A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255613B (en) * 1963-04-22 1967-12-07 Dowty Mining Equipment Ltd Wandering longwall mining
DE1458672B1 (en) * 1951-01-28 1970-02-26 Becorit Grubenausbau Gmbh Control for a migrating hydraulic longwall construction
DE1483906A1 (en) * 1966-09-10 1970-07-23 Konrad Grebe Wandering longwall mining
DE2838374B1 (en) * 1978-09-02 1980-01-10 Hemscheidt Maschf Hermann Neighbor control for hydraulic step extension frames
DE3128279A1 (en) * 1981-07-17 1983-02-03 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen ADJUSTMENT CONTROL FOR A HYDRAULIC STAMP EXTENSION AND HYDRAULICALLY CONTROLLED CHECK VALVE
WO2011006461A2 (en) * 2009-07-16 2011-01-20 Tiefenbach Control Systems Gmbh Hydraulic circuit for longwall mining

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3804848A1 (en) 1988-02-17 1989-08-31 Steinbrueck Peter Control device for inflatable inlays
DE3840478C2 (en) * 1988-12-01 1996-05-15 Westfalia Becorit Ind Tech Device for the emergency actuation of hydraulic expansion units for electrohydraulic expansion controls
DE102004017712B4 (en) * 2003-05-14 2019-05-09 Tiefenbach Control Systems Gmbh Hydraulic control for longwall construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458672B1 (en) * 1951-01-28 1970-02-26 Becorit Grubenausbau Gmbh Control for a migrating hydraulic longwall construction
DE1255613B (en) * 1963-04-22 1967-12-07 Dowty Mining Equipment Ltd Wandering longwall mining
DE1483906A1 (en) * 1966-09-10 1970-07-23 Konrad Grebe Wandering longwall mining
DE2838374B1 (en) * 1978-09-02 1980-01-10 Hemscheidt Maschf Hermann Neighbor control for hydraulic step extension frames
DE3128279A1 (en) * 1981-07-17 1983-02-03 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen ADJUSTMENT CONTROL FOR A HYDRAULIC STAMP EXTENSION AND HYDRAULICALLY CONTROLLED CHECK VALVE
WO2011006461A2 (en) * 2009-07-16 2011-01-20 Tiefenbach Control Systems Gmbh Hydraulic circuit for longwall mining

Also Published As

Publication number Publication date
CN104169525B (en) 2016-10-12
CN104169525A (en) 2014-11-26
AU2013220787B2 (en) 2016-12-08
WO2013120474A2 (en) 2013-08-22
AU2013220787A1 (en) 2014-09-18
DE102013001581A1 (en) 2013-08-22

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