ES373046A1 - Perfeccionamientos en los medios de sustentacion para te- chos de minas. - Google Patents

Perfeccionamientos en los medios de sustentacion para te- chos de minas.

Info

Publication number
ES373046A1
ES373046A1 ES373046A ES373046A ES373046A1 ES 373046 A1 ES373046 A1 ES 373046A1 ES 373046 A ES373046 A ES 373046A ES 373046 A ES373046 A ES 373046A ES 373046 A1 ES373046 A1 ES 373046A1
Authority
ES
Spain
Prior art keywords
support
roof
mine roof
supporting means
hydraulically
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
ES373046A
Other languages
English (en)
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.)
Dobson Ltd W E & F
WE&F Dobson Ltd
Original Assignee
Dobson Ltd W E & F
WE&F 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 Dobson Ltd W E & F, WE&F Dobson Ltd filed Critical Dobson Ltd W E & F
Publication of ES373046A1 publication Critical patent/ES373046A1/es
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
    • E21D23/0069—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 without essential advancing shifting 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)
  • Lining And Supports For Tunnels (AREA)
  • Tents Or Canopies (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
ES373046A 1968-11-02 1969-10-30 Perfeccionamientos en los medios de sustentacion para te- chos de minas. Expired ES373046A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5203468 1968-11-02

Publications (1)

Publication Number Publication Date
ES373046A1 true ES373046A1 (es) 1971-12-01

Family

ID=10462375

Family Applications (1)

Application Number Title Priority Date Filing Date
ES373046A Expired ES373046A1 (es) 1968-11-02 1969-10-30 Perfeccionamientos en los medios de sustentacion para te- chos de minas.

Country Status (7)

Country Link
US (1) US3631681A (es)
JP (1) JPS4931162B1 (es)
AT (1) AT293310B (es)
DE (1) DE1954645A1 (es)
ES (1) ES373046A1 (es)
FR (1) FR2022469A1 (es)
GB (1) GB1289299A (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL210760A1 (pl) * 1977-12-13 1979-09-24 Bochumer Eisen Heintzmann Uklad rozrzadu zaworowego przy przesuwnej ramownicy obudowy wyrobisk
DE8318615U1 (de) * 1983-06-28 1983-11-03 Klöckner-Becorit GmbH, 4620 Castrop-Rauxel Richtzylinder fuer den schildausbau
US4679856A (en) * 1983-09-21 1987-07-14 Klockner-Becorit Gmbh Mine self-advancing roof support and method of relocating a mine winning face equipped with self-advancing roof support
GB2164987A (en) * 1984-09-26 1986-04-03 Dowty Mining Equipment Ltd Mine roof supports
US5584611A (en) * 1994-11-22 1996-12-17 Long-Airdox Roof support for underground excavations
US6422962B1 (en) * 2000-04-11 2002-07-23 Litens Automotive Partnership Timing belt tensioner with a backstop device with controlled one-way mechanism
WO2004055328A1 (de) * 2002-12-17 2004-07-01 Tiefenbach Bergbautechnik Gmbh Strebausbau in einem bergwerk
CN103557015A (zh) * 2013-08-06 2014-02-05 四川华蓥山广能集团嘉华机械有限责任公司 多伸缩液压支架立柱

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1364412A (fr) * 1963-07-24 1964-06-19 Gewerk Eisenhuette Westfalia Soutènement hydraulique mobile utilisable au fond dans les mines
DE1236451B (de) * 1963-12-21 1967-03-16 Karl Maria Groetschel Dipl Ing Zwischen zwei benachbarte Ausbaueinheiten einsetzbares Leitorgan
GB1079202A (en) * 1964-10-02 1967-08-16 Wild A G & Co Ltd Improvements in or relating to roof support units for mines and the like

Also Published As

Publication number Publication date
DE1954645A1 (de) 1970-05-06
JPS4931162B1 (es) 1974-08-20
US3631681A (en) 1972-01-04
GB1289299A (es) 1972-09-13
AT293310B (de) 1971-10-11
FR2022469A1 (es) 1970-07-31

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