FR1514475A - Mine roof support device - Google Patents

Mine roof support device

Info

Publication number
FR1514475A
FR1514475A FR95821A FR95821A FR1514475A FR 1514475 A FR1514475 A FR 1514475A FR 95821 A FR95821 A FR 95821A FR 95821 A FR95821 A FR 95821A FR 1514475 A FR1514475 A FR 1514475A
Authority
FR
France
Prior art keywords
support 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
FR95821A
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Application granted granted Critical
Publication of FR1514475A publication Critical patent/FR1514475A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
    • E21F13/086—Armoured conveyors shifting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/127—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action with step-by-step action
    • F15B11/128—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action with step-by-step action by means of actuators of the standard type with special circuit controlling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/13—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action using separate dosing chambers of predetermined volume
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B2013/0414—Dosing devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
FR95821A 1966-02-22 1967-02-21 Mine roof support device Expired FR1514475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB772966A GB1160451A (en) 1966-02-22 1966-02-22 Fixed Increment Advance of Face Conveyors

Publications (1)

Publication Number Publication Date
FR1514475A true FR1514475A (en) 1968-02-23

Family

ID=9838631

Family Applications (1)

Application Number Title Priority Date Filing Date
FR95821A Expired FR1514475A (en) 1966-02-22 1967-02-21 Mine roof support device

Country Status (3)

Country Link
DE (1) DE1533776C3 (en)
FR (1) FR1514475A (en)
GB (1) GB1160451A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473324A (en) * 1982-03-06 1984-09-25 Dowty Mining Equipment Limited Mine roof supports

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2258423C3 (en) 1972-11-29 1980-11-13 Gewerkschaft Eisenhuette Westfalia, 4670 Luenen Device for backing the leadership of a mining machine or the like. for mining and extraction operations, with metered loading of the return cylinder
DE2265518C3 (en) * 1972-11-29 1982-04-01 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Device for backing the leadership of a mining machine or the like. for mining operations with metered loading of the return cylinders
DE2440211C2 (en) * 1974-08-22 1986-01-30 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulic return device for backing a planer guide or the like.
US4741247A (en) * 1986-09-17 1988-05-03 Rexa Corporation Pneumatic actuator apparatus
DE3808326A1 (en) * 1988-03-12 1989-09-21 Ruhrkohle Ag Device for advancing the conveyor in working operations
DE3827559C1 (en) * 1988-08-13 1989-09-07 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal, De
DE4019607C2 (en) * 1990-06-20 1994-02-17 Hemscheidt Maschf Hermann Control system for a strut extension frame
DE10327519A1 (en) * 2003-06-17 2005-01-20 Ortlinghaus-Werke Gmbh Hydraulic circuit
GB2498190A (en) * 2012-01-04 2013-07-10 Nat Oilwell Varco Lp Apparatus and method for positioning and connecting equipment on a drilling rig
US20130255802A1 (en) * 2012-04-02 2013-10-03 Cameron International Corporation Valve and hydraulic controller
CN103758523B (en) * 2013-12-31 2015-12-02 中国矿业大学 A kind of thin coal seam unmanned work plane moves the construction process of frame restricted model automatically

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473324A (en) * 1982-03-06 1984-09-25 Dowty Mining Equipment Limited Mine roof supports

Also Published As

Publication number Publication date
DE1533776B2 (en) 1978-01-26
DE1533776C3 (en) 1978-09-14
GB1160451A (en) 1969-08-06
DE1533776A1 (en) 1970-01-15

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