AT321229B - Shield extension - Google Patents

Shield extension

Info

Publication number
AT321229B
AT321229B AT1111372A AT1111372A AT321229B AT 321229 B AT321229 B AT 321229B AT 1111372 A AT1111372 A AT 1111372A AT 1111372 A AT1111372 A AT 1111372A AT 321229 B AT321229 B AT 321229B
Authority
AT
Austria
Prior art keywords
shield extension
shield
extension
Prior art date
Application number
AT1111372A
Other languages
German (de)
Original Assignee
Oesterr Alpine Montan
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 Oesterr Alpine Montan filed Critical Oesterr Alpine Montan
Priority to AT1111372A priority Critical patent/AT321229B/en
Priority to HUOE212A priority patent/HU167351B/hu
Priority to CS8895A priority patent/CS174226B2/cs
Priority to DE2363832A priority patent/DE2363832C3/en
Priority to YU3345/73A priority patent/YU35658B/en
Priority to FR7346317A priority patent/FR2212484B1/fr
Priority to US427438A priority patent/US3902325A/en
Priority to SU731981658A priority patent/SU683641A3/en
Priority to PL1973167680A priority patent/PL97759B1/en
Priority to GB5997173A priority patent/GB1431609A/en
Application granted granted Critical
Publication of AT321229B publication Critical patent/AT321229B/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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 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 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
AT1111372A 1972-12-28 1972-12-28 Shield extension AT321229B (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
AT1111372A AT321229B (en) 1972-12-28 1972-12-28 Shield extension
HUOE212A HU167351B (en) 1972-12-28 1973-12-17
DE2363832A DE2363832C3 (en) 1972-12-28 1973-12-21 Shield support frame
CS8895A CS174226B2 (en) 1972-12-28 1973-12-21
YU3345/73A YU35658B (en) 1972-12-28 1973-12-25 Reinforcement working shield at mining excavations
FR7346317A FR2212484B1 (en) 1972-12-28 1973-12-26
US427438A US3902325A (en) 1972-12-28 1973-12-26 Shield structure for the face support in mines
SU731981658A SU683641A3 (en) 1972-12-28 1973-12-27 Powered mining roof support section
PL1973167680A PL97759B1 (en) 1972-12-28 1973-12-28 SHIELD HOUSING
GB5997173A GB1431609A (en) 1972-12-28 1973-12-28 Mine roof support and shield structure

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
AT321229B true AT321229B (en) 1975-03-25

Family

ID=3626830

Family Applications (1)

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

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
US20230340877A1 (en) * 2022-04-24 2023-10-26 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
CS174226B2 (en) 1977-03-31
DE2363832A1 (en) 1974-07-04
DE2363832B2 (en) 1977-08-25
FR2212484A1 (en) 1974-07-26
FR2212484B1 (en) 1976-10-08
DE2363832C3 (en) 1978-04-27
US3902325A (en) 1975-09-02
HU167351B (en) 1975-09-27
SU683641A3 (en) 1979-08-30
YU334573A (en) 1980-09-25
YU35658B (en) 1981-04-30
GB1431609A (en) 1976-04-14
PL97759B1 (en) 1978-03-30

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee