PL223346A1 - - Google Patents

Info

Publication number
PL223346A1
PL223346A1 PL22334680A PL22334680A PL223346A1 PL 223346 A1 PL223346 A1 PL 223346A1 PL 22334680 A PL22334680 A PL 22334680A PL 22334680 A PL22334680 A PL 22334680A PL 223346 A1 PL223346 A1 PL 223346A1
Authority
PL
Poland
Application number
PL22334680A
Other versions
PL125322B1 (en
Inventor
Klaus Beckmann
Jans T Grisebach
Walter Weirich
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 PL223346A1 publication Critical patent/PL223346A1/xx
Publication of PL125322B1 publication Critical patent/PL125322B1/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
    • 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

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)
  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Presses (AREA)
PL1980223346A 1979-04-12 1980-04-09 Apparatus for seating hydraulic mine props with a strong and uniform force PL125322B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2914884A DE2914884C2 (en) 1979-04-12 1979-04-12 Control device for a hydraulic ram removal with associated automatic repositioning

Publications (2)

Publication Number Publication Date
PL223346A1 true PL223346A1 (en) 1981-01-30
PL125322B1 PL125322B1 (en) 1983-04-30

Family

ID=6068183

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1980223346A PL125322B1 (en) 1979-04-12 1980-04-09 Apparatus for seating hydraulic mine props with a strong and uniform force

Country Status (8)

Country Link
AU (1) AU533562B2 (en)
BE (1) BE882725A (en)
CA (1) CA1138303A (en)
DE (1) DE2914884C2 (en)
FR (1) FR2455673B2 (en)
GB (2) GB2096223B (en)
PL (1) PL125322B1 (en)
ZA (1) ZA802130B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3212747A1 (en) * 1982-04-06 1983-10-06 Gewerk Eisenhuette Westfalia DEVICE FOR STROKE CONTROL OF A CYLINDER GROUP OF A HYDRAULIC REMOVAL SYSTEM, IN PARTICULAR FOR SETTING THE STAMP OF A SCREAM REMOVAL UNIT
DE3301674C1 (en) * 1983-01-20 1984-01-05 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Control system for hydraulic stamps on walking frames
GB2137314B (en) * 1983-03-26 1986-07-23 Dobson Park Ind Valve for mine support
PL146170B1 (en) * 1984-12-10 1989-01-31 Ct Kt Maszyn Gorniczych Komag Apparatus for changing curability and mineablity of a mineral deposit
DE3546278C1 (en) * 1985-12-28 1987-07-02 Bergwerksverband Gmbh Repositioning control for longwall construction
DE3931625C1 (en) * 1989-09-22 1990-08-09 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal, De Underground mine roof support - maintains constant residual pressure during advance
GB9009859D0 (en) * 1990-05-02 1990-06-27 Meco Mining Equip A mine roof support
GB2274325B (en) * 1993-01-13 1996-04-03 Meco Mining Equip A yield valve
CN103775115A (en) * 2014-01-21 2014-05-07 焦作欣扬程煤矿设备有限公司 Side-sway shifting vertical pressure cylinder machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1024167A (en) * 1964-02-14 1966-03-30 Dowty Mining Equipment Ltd Roof support assembly suitable for use in mines
GB1135942A (en) * 1964-12-07 1968-12-11 Groetschel Karl Maria Improvements relating to roof supports for mine workings
GB1180578A (en) * 1967-03-06 1970-02-04 Podmoskovny G Pk I Exi Gornogo Advancing Mine Roof Supports
DE1290109B (en) * 1967-10-21 1969-03-06 Gewerk Eisenhuette Westfalia Stamp for expansion or bracing in the face / route transition
DE1750834A1 (en) * 1968-06-10 1971-04-29 Gewerk Eisenhuette Westfalia Pressure relief valve cartridge with piston O-ring seal
DE2146502C3 (en) * 1971-09-17 1982-04-29 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Valve arrangement for setting hydraulic pit rams with high setting force
DE2749312C2 (en) * 1977-11-04 1984-12-20 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Control device with automatic repositioning for hydraulic ram removal
DE2803283C2 (en) * 1978-01-26 1992-12-10 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Pressure relief valve for hydraulic pit rams

Also Published As

Publication number Publication date
AU5710080A (en) 1980-10-16
GB2096223B (en) 1983-05-11
ZA802130B (en) 1981-05-27
CA1138303A (en) 1982-12-28
PL125322B1 (en) 1983-04-30
GB2047316B (en) 1983-04-20
BE882725A (en) 1980-07-31
DE2914884A1 (en) 1980-10-30
GB2047316A (en) 1980-11-26
GB2096223A (en) 1982-10-13
DE2914884C2 (en) 1987-05-14
FR2455673B2 (en) 1987-05-07
FR2455673A2 (en) 1980-11-28
AU533562B2 (en) 1983-12-01

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