GB2021669A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB2021669A
GB2021669A GB7916679A GB7916679A GB2021669A GB 2021669 A GB2021669 A GB 2021669A GB 7916679 A GB7916679 A GB 7916679A GB 7916679 A GB7916679 A GB 7916679A GB 2021669 A GB2021669 A GB 2021669A
Authority
GB
United Kingdom
Prior art keywords
shield
mine roof
ram
support unit
roof supports
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.)
Granted
Application number
GB7916679A
Other versions
GB2021669B (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.)
TS OSRODEK P K MASZYN GORN
Original Assignee
TS OSRODEK P K MASZYN GORN
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 TS OSRODEK P K MASZYN GORN filed Critical TS OSRODEK P K MASZYN GORN
Publication of GB2021669A publication Critical patent/GB2021669A/en
Application granted granted Critical
Publication of GB2021669B publication Critical patent/GB2021669B/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
    • E21D23/04—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
    • E21D23/0427—Shield operating devices; Hinges therefor
    • 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

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)
  • Tents Or Canopies (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

A mine roof support unit comprises a roof bar 7 and a floor sill 1 joined by a telescopic shield having upper and lower parts (3), (4) connected by at least one ram (5) for guard disc extension. The shield (9) is supported by an adjustable strut ram (6) which is pivoted to the shield (9) and to the floor sill (1). This arrangement makes it possible to advance a fixed length roof bar towards a longwall face without the necessity of advancing the whole roof support unit. <IMAGE>
GB7916679A 1978-05-22 1979-05-14 Mine roof supports Expired GB2021669B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL5953978 1978-05-22

Publications (2)

Publication Number Publication Date
GB2021669A true GB2021669A (en) 1979-12-05
GB2021669B GB2021669B (en) 1982-05-12

Family

ID=19936475

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7916679A Expired GB2021669B (en) 1978-05-22 1979-05-14 Mine roof supports

Country Status (4)

Country Link
AT (1) AT364335B (en)
DE (1) DE2920203A1 (en)
GB (1) GB2021669B (en)
YU (1) YU97979A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215763A (en) * 1988-02-11 1989-09-27 Gyorgy Szentai Mine supports
CN108468560A (en) * 2018-05-30 2018-08-31 西安科技大学 A kind of half-edge coal seam puppet is bowed plagioclase wall Z-shaped supporting frame quarrying apparatus and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038629C2 (en) * 1980-10-13 1983-12-22 Thyssen Industrie Ag, 4300 Essen Shield support frame for underground support

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215763A (en) * 1988-02-11 1989-09-27 Gyorgy Szentai Mine supports
GB2215763B (en) * 1988-02-11 1992-04-01 Gyorgy Szentai Mine supports
CN108468560A (en) * 2018-05-30 2018-08-31 西安科技大学 A kind of half-edge coal seam puppet is bowed plagioclase wall Z-shaped supporting frame quarrying apparatus and method
CN108468560B (en) * 2018-05-30 2024-03-26 西安科技大学 Device and method for mining pseudo-depression inclined long-wall Z-shaped bracket of steep coal seam

Also Published As

Publication number Publication date
DE2920203A1 (en) 1979-11-29
GB2021669B (en) 1982-05-12
AT364335B (en) 1981-10-12
YU97979A (en) 1982-08-31
ATA338879A (en) 1981-03-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee