ZA754137B - Improvements in or relating to selfadvancing mine roof supports - Google Patents

Improvements in or relating to selfadvancing mine roof supports

Info

Publication number
ZA754137B
ZA754137B ZA00754137A ZA754137A ZA754137B ZA 754137 B ZA754137 B ZA 754137B ZA 00754137 A ZA00754137 A ZA 00754137A ZA 754137 A ZA754137 A ZA 754137A ZA 754137 B ZA754137 B ZA 754137B
Authority
ZA
South Africa
Prior art keywords
selfadvancing
relating
mine roof
roof supports
supports
Prior art date
Application number
ZA00754137A
Inventor
A Allen
Original Assignee
Gullick Dobson Ltd
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 Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Publication of ZA754137B publication Critical patent/ZA754137B/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
    • E21D23/12—Control, e.g. using remote control
    • E21D23/14—Effecting automatic sequential movement of supports, e.g. one behind the other
    • E21D23/148—Wireless transmission of signals or commands

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)
  • Computer Networks & Wireless Communication (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Earth Drilling (AREA)
ZA00754137A 1974-08-20 1975-06-27 Improvements in or relating to selfadvancing mine roof supports ZA754137B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36490/74A GB1517711A (en) 1974-08-20 1974-08-20 Self-advancing mine roof supports

Publications (1)

Publication Number Publication Date
ZA754137B true ZA754137B (en) 1976-06-30

Family

ID=10388642

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00754137A ZA754137B (en) 1974-08-20 1975-06-27 Improvements in or relating to selfadvancing mine roof supports

Country Status (5)

Country Link
JP (1) JPS5135601A (en)
DE (1) DE2507106B2 (en)
FR (1) FR2282529A1 (en)
GB (1) GB1517711A (en)
ZA (1) ZA754137B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2640185C3 (en) * 1976-09-07 1986-07-10 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Multiple control unit for hydraulic support
DE2700829C2 (en) * 1977-01-11 1986-04-17 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulic extension control
PL118233B1 (en) * 1978-04-14 1981-09-30 Centralny Osrodek Projektowo Kon Apparatus for winning thick deposits of useful minerals skopaemogo
GB2095425B (en) * 1981-02-25 1984-06-27 Dobson Park Ind Mine roof support control systems
DE3334607C1 (en) * 1983-09-24 1984-05-10 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Signal transmitter for control signals for controlling a hydraulic self-advancing powered support system
DE3608181C2 (en) * 1986-03-12 1995-01-05 Westfalia Becorit Ind Tech Supply block for connecting hydraulic expansion racks to the supply lines of a central hydraulic supply system
DE3700470A1 (en) * 1987-01-09 1988-07-21 Bochumer Eisen Heintzmann Hydraulic remote actuation system

Also Published As

Publication number Publication date
FR2282529B3 (en) 1979-03-16
GB1517711A (en) 1978-07-12
DE2507106A1 (en) 1976-03-04
DE2507106B2 (en) 1977-02-24
AU8305175A (en) 1977-01-20
FR2282529A1 (en) 1976-03-19
JPS5135601A (en) 1976-03-26

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