GB1228381A - - Google Patents

Info

Publication number
GB1228381A
GB1228381A GB5084767A GB1228381DA GB1228381A GB 1228381 A GB1228381 A GB 1228381A GB 5084767 A GB5084767 A GB 5084767A GB 1228381D A GB1228381D A GB 1228381DA GB 1228381 A GB1228381 A GB 1228381A
Authority
GB
United Kingdom
Prior art keywords
line
valve
advancing
prop
controlled
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
GB5084767A
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 GB1228381A publication Critical patent/GB1228381A/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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control
    • 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
    • E21D23/0017—Pile type supports
    • E21D23/0021—Pile type supports comprising two walking elements
    • 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
    • E21D23/12—Control, e.g. using remote control
    • 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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms

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)
  • Fluid-Pressure Circuits (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

1,228,381. Advancing mine roof supports. GULLICK, DOBSON Ltd. 18 July, 1968 [8 Nov., 1967], No. 50847/67. Heading E1P. In an advancing mine roof support comprising a prop 10 which is controlled by a release valve 15 responsive to the fluid pressure in a line 28, and, an advancing ram 11 which is controlled by a valve 16 connected to the line 28 through conduits 25, 27 as shown, an adjustable metering valve 17 is disposed in the line 25 to ensure that a predetermined time lapse ensues between the release of the prop 10 and its advancement. Line 28 may receive a hydraulic signal from an adjacent supportas described in Specifications 1,038,262 and 1,085,274.
GB5084767A 1967-11-08 1967-11-08 Expired GB1228381A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5084767 1967-11-08

Publications (1)

Publication Number Publication Date
GB1228381A true GB1228381A (en) 1971-04-15

Family

ID=10457623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5084767A Expired GB1228381A (en) 1967-11-08 1967-11-08

Country Status (5)

Country Link
US (1) US3530490A (en)
JP (1) JPS4839323B1 (en)
AT (1) AT277117B (en)
DE (1) DE1805229C3 (en)
GB (1) GB1228381A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702061A (en) * 1971-09-20 1972-11-07 Kloeckner Werke Ag Hydraulic support systems for mine workings
BE795481A (en) * 1972-09-14 1973-05-29 Gewerk Eisenhuette Westfalia BACKUP PILE FOR MINING, FEATURING A HYDRAULIC CONTROL BLOCK
US3996753A (en) * 1973-02-27 1976-12-14 Becorit Grubenausbau Gmbh Mine roof support
GB1546630A (en) * 1976-12-29 1979-05-23 Fletcher Sutcliffe Wild Ltd Mine roof supports
DE2733270C2 (en) * 1977-07-22 1984-07-19 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Expansion control for a progressive hydraulic expansion
DE3002818C2 (en) * 1980-01-26 1984-02-23 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Device for controlling hydraulic feed cylinders, in particular for the feed of sliding caps of a walking support
DE3212747A1 (en) * 1982-04-06 1983-10-06 Gewerk Eisenhuette Westfalia DEVICE FOR STROKE CONTROL OF A CYLINDER GROUP OF A HYDRAULIC REMOVAL SYSTEM, IN PARTICULAR FOR SETTING THE STAMP OF A SCREAM REMOVAL UNIT
GB9009859D0 (en) * 1990-05-02 1990-06-27 Meco Mining Equip A mine roof support

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE558976A (en) *
US2585297A (en) * 1949-05-23 1952-02-12 Rupert Diecasting Company Aluminum die-casting machine
US3198083A (en) * 1963-05-13 1965-08-03 Dowty Mining Equipment Ltd Control system for mine roof supports
GB1022469A (en) * 1964-02-11 1966-03-16 Dowty Mining Equipment Ltd Roof support assembly suitable for use in mines

Also Published As

Publication number Publication date
JPS4839323B1 (en) 1973-11-22
DE1805229C3 (en) 1974-08-15
AT277117B (en) 1969-12-10
US3530490A (en) 1970-09-22
DE1805229A1 (en) 1972-05-25

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414A Case decided by the comptroller ** specification amended (sect. 14/1949)
SPA Amended specification published
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee