GB1124489A - Improvements in or relating to coal face support systems - Google Patents

Improvements in or relating to coal face support systems

Info

Publication number
GB1124489A
GB1124489A GB51898/65A GB5189865A GB1124489A GB 1124489 A GB1124489 A GB 1124489A GB 51898/65 A GB51898/65 A GB 51898/65A GB 5189865 A GB5189865 A GB 5189865A GB 1124489 A GB1124489 A GB 1124489A
Authority
GB
United Kingdom
Prior art keywords
support
roof
advance
cause
unit
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
GB51898/65A
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband GmbH
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 Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of GB1124489A publication Critical patent/GB1124489A/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
    • E21D23/12—Control, e.g. using remote control
    • 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
    • E21D23/04—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
    • 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
    • E21D23/14—Effecting automatic sequential movement of supports, e.g. one behind the other
    • 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
    • E21D23/14—Effecting automatic sequential movement of supports, e.g. one behind the other
    • E21D23/142—Measuring the advance of support units with respect to external points of reference

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)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

1,124,489. Advancing mine roof supports. BERGWERKSVERBAND G.m.b.H. Dec. 7, 1965 [Dec. 30, 1964], No.51898/65. Heading F1P. In a hydraulic mine roof support system comprising a plurality of advanceable roof support units arranged in groups, each support unit has means for feeling the working face and is arranged to generate a control signal when there is sufficient room ahead of the support to allow the support to advance, the signal only becoming effective to initiate the advancing sequence of the support unit when the unit has also received a time signal arranged to be fed in succession to all the support units of a group at predetermined intervals of time. Each support unit may comprise a sliding roof bar 1 guided between two fixed roof bars 2 and urged mechanically, pneumatically or hydraulically against the working face. When the sliding bar of a support is fully extended, electrical contacts 5a, 5b close to produce the control signal and when the support also receives the time signal from a transmitter an electrical circuit including the contacts 5a, 5b is completed to cause the support to advance. At the end of advance further contacts 6a, 6b are made to cause the support to re-set. Alternatively the cessation of the time signal after a predetermined duration may cause the support unit to re-set. The control signals may also be sent by a feeler switch on each support which is responsive to the distance from a conveyer situated between the supports and the working face. If any support fails to advance the full distance a feeler switch may cause (a) operation of an acoustic and/or warning system, (b) the stopping of the conveyer or of a cutting machine or (c) the further lowering of the roof bar of the support.
GB51898/65A 1964-12-30 1965-12-07 Improvements in or relating to coal face support systems Expired GB1124489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB79947A DE1209086B (en) 1964-12-30 1964-12-30 Process for the automatic backward movement and placement of individual expansion units connected to form groups

Publications (1)

Publication Number Publication Date
GB1124489A true GB1124489A (en) 1968-08-21

Family

ID=6980515

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51898/65A Expired GB1124489A (en) 1964-12-30 1965-12-07 Improvements in or relating to coal face support systems

Country Status (3)

Country Link
US (1) US3392532A (en)
DE (1) DE1209086B (en)
GB (1) GB1124489A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1235872A (en) * 1967-06-14 1971-06-16 Bergwerksverband Gmbh Self-advancing pit-prop systems
DE1583072B1 (en) * 1967-10-18 1970-01-15 Bergwerksverband Gmbh Circuit, especially for controlling support frames or jacks for hydraulic longwall mining in underground mining
DE1583794B1 (en) * 1968-02-28 1970-09-24 Bergwerksverband Gmbh Control for the hydraulic migrating longwall construction
DE1783025B1 (en) * 1968-09-20 1970-10-15 Bergwerksverband Gmbh DEVICE FOR SENSING OBSTACLES IN THE WAY OF THE ADVANCING, STEPPING STRUCTURAL STRUCTURE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB991010A (en) * 1962-08-20 1965-05-05 Dowty Mining Equipment Ltd Roof support assembly
US3243964A (en) * 1963-04-15 1966-04-05 Dowty Technical Dev Ltd Mining apparatus
GB1023125A (en) * 1963-07-22 1966-03-16 Dowty Mining Equipment Ltd Mining apparatus
GB1063455A (en) * 1964-05-15 1967-03-30 Dowty Mining Equipment Ltd Roof support assembly suitable for use in mines

Also Published As

Publication number Publication date
DE1209086B (en) 1966-01-20
US3392532A (en) 1968-07-16

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