CS174226B2 - - Google Patents

Info

Publication number
CS174226B2
CS174226B2 CS8895A CS889573A CS174226B2 CS 174226 B2 CS174226 B2 CS 174226B2 CS 8895 A CS8895 A CS 8895A CS 889573 A CS889573 A CS 889573A CS 174226 B2 CS174226 B2 CS 174226B2
Authority
CS
Czechoslovakia
Application number
CS8895A
Other languages
Czech (cs)
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 filed Critical
Publication of CS174226B2 publication Critical patent/CS174226B2/cs

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
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/0206—Hydraulically operated extension devices
    • 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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
    • E21D23/0039—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member and supported by a strut or by a row of struts parallel to the working face

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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Tents Or Canopies (AREA)
  • Earth Drilling (AREA)
  • Movable Scaffolding (AREA)
CS8895A 1972-12-28 1973-12-21 CS174226B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1111372A AT321229B (en) 1972-12-28 1972-12-28 Shield extension

Publications (1)

Publication Number Publication Date
CS174226B2 true CS174226B2 (en) 1977-03-31

Family

ID=3626830

Family Applications (1)

Application Number Title Priority Date Filing Date
CS8895A CS174226B2 (en) 1972-12-28 1973-12-21

Country Status (10)

Country Link
US (1) US3902325A (en)
AT (1) AT321229B (en)
CS (1) CS174226B2 (en)
DE (1) DE2363832C3 (en)
FR (1) FR2212484B1 (en)
GB (1) GB1431609A (en)
HU (1) HU167351B (en)
PL (1) PL97759B1 (en)
SU (1) SU683641A3 (en)
YU (1) YU35658B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1486906A (en) * 1974-09-07 1977-09-28 Peake C Mining apparatus
GB1526399A (en) * 1974-12-18 1978-09-27 Dowty Mining Equipment Ltd Mine roof support
DE2507319B2 (en) * 1975-01-11 1977-06-08 Thyssen Industrie Ag, 4300 Essen SHIELD STRUCTURE
AT337639B (en) * 1975-09-26 1977-07-11 Voest Alpine Montan Ag SHIELD EXPANSION
DE2749371C3 (en) * 1977-11-04 1980-05-14 Kloeckner-Werke Ag, 4100 Duisburg Shield support frame
AT350991B (en) * 1977-11-14 1979-06-25 Voest Ag SHIELD STRUCTURE
DE2757885A1 (en) * 1977-12-24 1979-06-28 Thyssen Industrie SHIELD EXTENSION RACK FOR THE PIT EXTENSION
AT360936B (en) * 1979-02-14 1981-02-10 Voest Alpine Ag EXTENSION BLOCK
HU179856B (en) * 1980-05-06 1982-12-28 Varpalotai Szenbanyak Apparatus for nining particularly expolating thick seams
DE3211595A1 (en) * 1982-03-30 1983-10-06 Gewerk Eisenhuette Westfalia BREAK AND OFFSET SHIELDING OF A LEMNIS CAT SHIELD
GB2188665B (en) * 1986-04-01 1990-02-21 Dobson Park Ind Mine roof supports
GB8707235D0 (en) * 1987-03-26 1987-04-29 Dowty Hucknall Ltd Roof support
US5584611A (en) * 1994-11-22 1996-12-17 Long-Airdox Roof support for underground excavations
WO2020068850A1 (en) 2018-09-24 2020-04-02 Joy Global Underground Mining Llc Roof support including extendable links
US10774642B1 (en) * 2019-05-05 2020-09-15 Liaoning University Hydraulic support unit and hydraulic support for anti-rock burst roadway
CN114562314B (en) * 2022-03-09 2023-02-28 中国矿业大学 Fully mechanized caving face filling hydraulic support and using method thereof
US12049824B2 (en) * 2022-04-24 2024-07-30 Henan Polytechnic University Distributed coal cutting device for longwall face of coal mine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811288A (en) * 1972-05-15 1974-05-21 Kloeckner Werke Ag Traveling face support with an attached extensible shield

Also Published As

Publication number Publication date
AT321229B (en) 1975-03-25
FR2212484A1 (en) 1974-07-26
DE2363832C3 (en) 1978-04-27
YU334573A (en) 1980-09-25
SU683641A3 (en) 1979-08-30
US3902325A (en) 1975-09-02
DE2363832A1 (en) 1974-07-04
DE2363832B2 (en) 1977-08-25
FR2212484B1 (en) 1976-10-08
GB1431609A (en) 1976-04-14
HU167351B (en) 1975-09-27
PL97759B1 (en) 1978-03-30
YU35658B (en) 1981-04-30

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