GB1408429A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB1408429A
GB1408429A GB3300172A GB3300172A GB1408429A GB 1408429 A GB1408429 A GB 1408429A GB 3300172 A GB3300172 A GB 3300172A GB 3300172 A GB3300172 A GB 3300172A GB 1408429 A GB1408429 A GB 1408429A
Authority
GB
United Kingdom
Prior art keywords
extensions
details
mine roof
assembly
prov
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
GB3300172A
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.)
Mastabar Mining Equipment Co Ltd
Original Assignee
Mastabar Mining Equipment Co 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 Mastabar Mining Equipment Co Ltd filed Critical Mastabar Mining Equipment Co Ltd
Priority to GB3300172A priority Critical patent/GB1408429A/en
Priority to AU57826/73A priority patent/AU487333B2/en
Priority to CA176,003A priority patent/CA995908A/en
Priority to US377305A priority patent/US3872678A/en
Publication of GB1408429A publication Critical patent/GB1408429A/en
Expired legal-status Critical Current

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
    • E21D23/006—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
    • E21D23/0073—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 with advancing shifting devices connected therewith
    • 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
    • E21D23/063—Retractable cantilever extensions therefor

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)
  • Body Structure For Vehicles (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

1408429 Mine roof supports MASTABAR MINING EQUIPMENT CO LTD 29 June 1973 [14 July 1972] 33001/72 Heading E1P A mine roof support assembly, such as an advancing support, comprises a canopy 12 mounted on a base 11 by a series of hydraulic props 13-16 and has cantilever extensions 36, 37 pivotally attached to the canopy so as to be angularly adjusted by a lever arm 39, 43. The lever arm is actuated by a jack 45 and provided with a cross plate 40 having lobes 41, 42 engaging beneath the webs 37a of the extensions. Retraction of the extensions is limited by stop plates 51, 52 and the assembly is provided with rear shields 54, 56 as shown. In a modification, see Figs 4, 5 and 6 of Prov. Diag, (not shown), the assembly comprises two chocks interconnected for alternate advance in series with the rear chock having a pivoted roof extension to bridge the gap therebetween and the front chock having a modified cantilever extension for details of which Fig 4 should be referred to. The extensions may be of box girder construction and of telescopic type for details of which and details of steering means arranged between front and rear chocks the remaining Prov. Diags (not shown) and the Specn. should be referred to.
GB3300172A 1972-07-14 1972-07-14 Mine roof supports Expired GB1408429A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3300172A GB1408429A (en) 1972-07-14 1972-07-14 Mine roof supports
AU57826/73A AU487333B2 (en) 1972-07-14 1973-07-06 Improvements in or relating to mine roof supports
CA176,003A CA995908A (en) 1972-07-14 1973-07-09 Mine roof supports
US377305A US3872678A (en) 1972-07-14 1973-07-09 Mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3300172A GB1408429A (en) 1972-07-14 1972-07-14 Mine roof supports

Publications (1)

Publication Number Publication Date
GB1408429A true GB1408429A (en) 1975-10-01

Family

ID=10347201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3300172A Expired GB1408429A (en) 1972-07-14 1972-07-14 Mine roof supports

Country Status (3)

Country Link
US (1) US3872678A (en)
CA (1) CA995908A (en)
GB (1) GB1408429A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305093A (en) * 2011-09-29 2012-01-04 郑州四维机电设备制造有限公司 Transitional hydraulic bracket for gob-side entry retaining
CN113845056A (en) * 2021-09-22 2021-12-28 江苏虹一工程建设有限公司 Method and system for synchronous alternate jacking based on single action
CN113847071A (en) * 2021-10-19 2021-12-28 安徽理工大学 Adjustable pedal applied to coal mining hydraulic support

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2416306C2 (en) * 1974-04-04 1979-12-06 Becorit Grubenausbau Gmbh, 4350 Recklinghausen Breakage and misalignment shielding for a shield support for underground mining operations
DE2732339C2 (en) * 1977-07-16 1990-03-29 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Longwall mining, especially longwall mining
US4480946A (en) * 1981-10-19 1984-11-06 Kelley Jay H Gob canopy for a mine roof support
DE3239377A1 (en) * 1982-10-23 1984-04-26 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Powered support assembly for underground mining operations
GB2192021B (en) * 1986-06-26 1990-03-21 Gullick Dobson Ltd A roof engaging structure for a mine roof support
DE102008029014B3 (en) * 2008-06-20 2010-04-15 Bucyrus Dbt Europe Gmbh Shield frame for underground mining and surface support element for this purpose
DE102008029085B3 (en) * 2008-06-20 2010-01-28 Bucyrus Dbt Europe Gmbh Shield cap for a shield extension
CN102022130B (en) * 2009-09-15 2013-03-27 兖州煤业股份有限公司 Stepping self-walking cantilever timbering of fully mechanized workface
WO2011037659A1 (en) * 2009-09-28 2011-03-31 Vermeer Manufacturing Company Falling object protection system
DE202009015653U1 (en) * 2009-11-25 2011-07-12 Bucyrus Europe Gmbh Shield cap for a shield extension
CN102230387A (en) * 2011-05-24 2011-11-02 中煤北京煤矿机械有限责任公司 Movable anti-falling rack canopy guard device and tip bracket
DE102011105556B4 (en) * 2011-06-25 2023-04-13 Abg Allgemeine Baumaschinen-Gesellschaft Mbh road construction machine
CN109441516B (en) * 2018-12-11 2024-02-20 贵州大学 Colliery exploitation subsidence area protection device that angle is convenient for adjust
CN110043299A (en) * 2019-05-14 2019-07-23 江苏中贵重工有限公司 A kind of suspension device and roofboltier

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113661A (en) * 1959-09-09 1963-12-10 Gewerk Eisenhuette Westfalia Apparatus for displacing a longitudinal mining conveyor
BE649949A (en) * 1963-07-02
US3490243A (en) * 1966-11-16 1970-01-20 Karl Maria Groetschel Roof supports for mine workings
GB1182817A (en) * 1967-06-19 1970-03-04 Wild A G & Co Ltd Fluid-Operable Self-Advancing Mine Roof Support.
GB1234661A (en) * 1968-01-17 1971-06-09
DE2027299A1 (en) * 1970-06-03 1971-12-09 Klöckner-Werke ,4100 Duisburg Cap pull for the support frame of the traveling longwall mining

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305093A (en) * 2011-09-29 2012-01-04 郑州四维机电设备制造有限公司 Transitional hydraulic bracket for gob-side entry retaining
CN113845056A (en) * 2021-09-22 2021-12-28 江苏虹一工程建设有限公司 Method and system for synchronous alternate jacking based on single action
CN113845056B (en) * 2021-09-22 2022-07-26 江苏虹一工程建设有限公司 Method and system based on single-action synchronous alternate jacking
CN113847071A (en) * 2021-10-19 2021-12-28 安徽理工大学 Adjustable pedal applied to coal mining hydraulic support
CN113847071B (en) * 2021-10-19 2024-04-16 安徽理工大学 Adjustable pedal applied to coal mining hydraulic support

Also Published As

Publication number Publication date
CA995908A (en) 1976-08-31
AU5782673A (en) 1975-01-09
US3872678A (en) 1975-03-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee