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AU2343770A - Improvements relating to roof supporting systems - Google Patents

Improvements relating to roof supporting systems

Info

Publication number
AU2343770A
AU2343770A AU23437/70A AU2343770A AU2343770A AU 2343770 A AU2343770 A AU 2343770A AU 23437/70 A AU23437/70 A AU 23437/70A AU 2343770 A AU2343770 A AU 2343770A AU 2343770 A AU2343770 A AU 2343770A
Authority
AU
Australia
Prior art keywords
improvements relating
roof supporting
supporting systems
systems
roof
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.)
Expired
Application number
AU23437/70A
Inventor
MARIA GROETSCHEL and UTZ GROETSCHEL KARL
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU2343770A publication Critical patent/AU2343770A/en
Expired 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
    • E21D23/006—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)
AU23437/70A 1969-12-18 1970-12-16 Improvements relating to roof supporting systems Expired AU2343770A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19691963558 DE1963558B1 (en) 1969-12-18 1969-12-18 Control arrangement for stepping hydraulic expansion team
DEDE81963 1969-12-18

Publications (1)

Publication Number Publication Date
AU2343770A true AU2343770A (en) 1972-06-22

Family

ID=5754298

Family Applications (1)

Application Number Title Priority Date Filing Date
AU23437/70A Expired AU2343770A (en) 1969-12-18 1970-12-16 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU601038B2 (en) * 1987-05-09 1990-08-30 Gewerkschaft Eisenhutte Westfalia Gmbh Improvements in or relating to electro-hydraulic control systems

Families Citing this family (3)

* 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
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU601038B2 (en) * 1987-05-09 1990-08-30 Gewerkschaft Eisenhutte Westfalia Gmbh Improvements in or relating to electro-hydraulic control systems

Also Published As

Publication number Publication date
DE1963558B1 (en) 1971-02-18
ZA708482B (en) 1971-09-29
GB1333425A (en) 1973-10-10
US3672176A (en) 1972-06-27

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