ZA708482B - Improvements relating to roof supporting systems - Google Patents

Improvements relating to roof supporting systems

Info

Publication number
ZA708482B
ZA708482B ZA708482A ZA708482A ZA708482B ZA 708482 B ZA708482 B ZA 708482B ZA 708482 A ZA708482 A ZA 708482A ZA 708482 A ZA708482 A ZA 708482A ZA 708482 B ZA708482 B ZA 708482B
Authority
ZA
South Africa
Prior art keywords
improvements relating
roof supporting
supporting systems
systems
roof
Prior art date
Application number
ZA708482A
Inventor
U Groetschel
K Groetschel
Original Assignee
Groetschel Karl Maria
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 Groetschel Karl Maria filed Critical Groetschel Karl Maria
Publication of ZA708482B publication Critical patent/ZA708482B/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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith

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)
  • Revetment (AREA)
ZA708482A 1969-12-18 1970-12-15 Improvements relating to roof supporting systems ZA708482B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691963558 DE1963558B1 (en) 1969-12-18 1969-12-18 Control arrangement for stepping hydraulic expansion team

Publications (1)

Publication Number Publication Date
ZA708482B true ZA708482B (en) 1971-09-29

Family

ID=5754298

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA708482A ZA708482B (en) 1969-12-18 1970-12-15 Improvements relating to roof supporting systems

Country Status (5)

Country Link
US (1) US3672176A (en)
AU (1) AU2343770A (en)
DE (1) DE1963558B1 (en)
GB (1) GB1333425A (en)
ZA (1) ZA708482B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1407801A (en) * 1971-10-28 1975-09-24 Dowty Mining Equipment Ltd Hydraulic apparatus
JPS5317502A (en) * 1976-07-31 1978-02-17 Taiheiyo Eng Selfftravelling frame remoteecontroller
DE3715586C1 (en) * 1987-05-09 1988-09-22 Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De
CN108547651B (en) * 2018-06-11 2023-12-19 山东天晟机械装备股份有限公司 Advanced hydraulic support with full-section protection and anti-impact effects

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1046269A (en) * 1963-09-03 1966-10-19 Dowty Mining Equipment Ltd Advanceable roof support assembly
DE1289012C2 (en) * 1967-03-30 1973-04-05 Bergwerksverband Gmbh Equipment for the schedule control of hydraulic pit lining
DE1533721A1 (en) * 1967-05-31 1970-01-22 Bergwerksverband Gmbh Equipment for schedule control of hydraulic pit lining

Also Published As

Publication number Publication date
DE1963558B1 (en) 1971-02-18
AU2343770A (en) 1972-06-22
GB1333425A (en) 1973-10-10
US3672176A (en) 1972-06-27

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