FR1421076A - Control device for mine roof support - Google Patents

Control device for mine roof support

Info

Publication number
FR1421076A
FR1421076A FR2374A FR2374A FR1421076A FR 1421076 A FR1421076 A FR 1421076A FR 2374 A FR2374 A FR 2374A FR 2374 A FR2374 A FR 2374A FR 1421076 A FR1421076 A FR 1421076A
Authority
FR
France
Prior art keywords
control device
roof support
mine roof
mine
support
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
FR2374A
Other languages
French (fr)
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.)
Dobson Ltd W E & F
WE&F Dobson Ltd
Original Assignee
Dobson Ltd W E & F
WE&F Dobson 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 Dobson Ltd W E & F, WE&F Dobson Ltd filed Critical Dobson Ltd W E & F
Application granted granted Critical
Publication of FR1421076A publication Critical patent/FR1421076A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/512—Arrangement of valves
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/60—Devices for withdrawing props or chocks
    • E21D15/606—Devices for withdrawing props or chocks the props being moved systematically
    • 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
    • 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
    • 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

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)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Press Drives And Press Lines (AREA)
  • Fluid-Driven Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
FR2374A 1964-01-18 1965-01-18 Control device for mine roof support Expired FR1421076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2314/64A GB1086002A (en) 1964-01-18 1964-01-18 An improved hydraulic prop

Publications (1)

Publication Number Publication Date
FR1421076A true FR1421076A (en) 1965-12-10

Family

ID=9737370

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2374A Expired FR1421076A (en) 1964-01-18 1965-01-18 Control device for mine roof support

Country Status (5)

Country Link
US (1) US3295814A (en)
BE (1) BE658328A (en)
DE (1) DE1226513B (en)
FR (1) FR1421076A (en)
GB (1) GB1086002A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110259491A (en) * 2019-07-04 2019-09-20 山东中煤电器有限公司 The electronic direct-push reversal valve of hydraulic support

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4621565A (en) * 1984-08-15 1986-11-11 Automotive Products Plc Hydraulic slave cylinder switch
CN103291335A (en) * 2013-05-31 2013-09-11 巨隆集团芜湖兴隆液压有限公司 Balanced floating bidirectional lock

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069549B (en) * 1959-11-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110259491A (en) * 2019-07-04 2019-09-20 山东中煤电器有限公司 The electronic direct-push reversal valve of hydraulic support
CN110259491B (en) * 2019-07-04 2024-06-11 山东中煤电器有限公司 Electric direct-pushing reversing valve for hydraulic support

Also Published As

Publication number Publication date
BE658328A (en) 1965-04-30
DE1226513B (en) 1966-10-13
GB1086002A (en) 1967-10-04
US3295814A (en) 1967-01-03

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