ZA869593B - Movable trestle - Google Patents

Movable trestle

Info

Publication number
ZA869593B
ZA869593B ZA869593A ZA869593A ZA869593B ZA 869593 B ZA869593 B ZA 869593B ZA 869593 A ZA869593 A ZA 869593A ZA 869593 A ZA869593 A ZA 869593A ZA 869593 B ZA869593 B ZA 869593B
Authority
ZA
South Africa
Prior art keywords
movable trestle
trestle
movable
Prior art date
Application number
ZA869593A
Other languages
English (en)
Inventor
Ernst Urschitz
Original Assignee
Voest Alpine Ag
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 Voest Alpine Ag filed Critical Voest Alpine Ag
Publication of ZA869593B publication Critical patent/ZA869593B/xx

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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0454—Trailing plates; Coal face or goaf side sprags

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
ZA869593A 1986-01-22 1986-12-19 Movable trestle ZA869593B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT14586 1986-01-22

Publications (1)

Publication Number Publication Date
ZA869593B true ZA869593B (en) 1988-07-27

Family

ID=3482720

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA869593A ZA869593B (en) 1986-01-22 1986-12-19 Movable trestle

Country Status (5)

Country Link
US (1) US4747729A (de)
AU (1) AU6784787A (de)
DE (1) DE3643120A1 (de)
GB (1) GB2185514B (de)
ZA (1) ZA869593B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584611A (en) * 1994-11-22 1996-12-17 Long-Airdox Roof support for underground excavations
EP0795680B1 (de) * 1996-03-11 2003-09-03 Council of Scientific and Industrial Research Kurzfront-Bergbauvorrichtung für die Pfeilergewinnung eines unterirdischen Steinkohlebergbaus
CN104988826B (zh) * 2015-06-02 2017-07-07 山西晋城无烟煤矿业集团有限责任公司 井下顺槽车过溜槽装置
CN110656967B (zh) * 2019-10-25 2020-11-24 南京六创科技发展有限公司 一种矿用薄层煤液压支架
CN113863959B (zh) * 2021-10-28 2023-06-09 中铁二十局集团有限公司 一种仰拱栈桥台车及其施工方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1919660A1 (de) * 1969-04-18 1970-11-05 Gewerk Eisenhuette Westfalia Mit einer Versatzabschirmung versehener wandernder Ausbau
GB1387311A (en) * 1972-03-24 1975-03-12 Gullick Dobson Ltd Mine roof supports
US3996753A (en) * 1973-02-27 1976-12-14 Becorit Grubenausbau Gmbh Mine roof support
GB1456993A (en) * 1973-04-27 1976-12-01 Coal Industry Patents Ltd Mine roof support shield assembly
GB2048352B (en) * 1979-05-05 1982-12-22 Dowty Mining Equipment Ltd Mine roof support
DE3400772A1 (de) * 1984-01-12 1985-07-25 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Mobiles ausbaugespann, insbesondere fuer den pfeilerrueckbau

Also Published As

Publication number Publication date
GB2185514A (en) 1987-07-22
AU6784787A (en) 1987-07-23
DE3643120A1 (de) 1987-07-30
GB8630350D0 (en) 1987-01-28
US4747729A (en) 1988-05-31
GB2185514B (en) 1988-10-19

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