BE794193A - SEQUENTIAL CONTROL SYSTEM FOR AUTOMATIC RIPING OF A GROUP OF SUPPORT ELEMENTS - Google Patents

SEQUENTIAL CONTROL SYSTEM FOR AUTOMATIC RIPING OF A GROUP OF SUPPORT ELEMENTS

Info

Publication number
BE794193A
BE794193A BE794193DA BE794193A BE 794193 A BE794193 A BE 794193A BE 794193D A BE794193D A BE 794193DA BE 794193 A BE794193 A BE 794193A
Authority
BE
Belgium
Prior art keywords
riping
automatic
group
control system
support elements
Prior art date
Application number
Other languages
French (fr)
Original Assignee
Gewerk Eisenhuette Westfalia
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.)
Publication date
Publication of BE794193A publication Critical patent/BE794193A/en

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
    • 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members

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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Chain Conveyers (AREA)
BE794193D 1972-03-16 SEQUENTIAL CONTROL SYSTEM FOR AUTOMATIC RIPING OF A GROUP OF SUPPORT ELEMENTS BE794193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2212686A DE2212686C3 (en) 1972-03-16 1972-03-16 Group sequence control for the automatic backing of an expansion group

Publications (1)

Publication Number Publication Date
BE794193A true BE794193A (en) 1973-05-16

Family

ID=5839079

Family Applications (1)

Application Number Title Priority Date Filing Date
BE794193D BE794193A (en) 1972-03-16 SEQUENTIAL CONTROL SYSTEM FOR AUTOMATIC RIPING OF A GROUP OF SUPPORT ELEMENTS

Country Status (5)

Country Link
US (1) US3906738A (en)
BE (1) BE794193A (en)
DE (1) DE2212686C3 (en)
FR (1) FR2175735B1 (en)
GB (1) GB1420862A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159671A (en) * 1974-08-20 1979-07-03 Allen Archelaius D Self-advancing mine roof supports
GB1531246A (en) * 1975-07-29 1978-11-08 Gullick Dobson Ltd Mine roof support control systems
DE2700829C2 (en) * 1977-01-11 1986-04-17 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulic extension control
JPS53114704A (en) * 1977-02-28 1978-10-06 Taiheiyo Eng Operating device of selfftravelling frame* etc*
DE2851937C2 (en) * 1978-12-01 1986-05-28 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Control valve, especially for hydraulic support in mining operations
GB2095425B (en) * 1981-02-25 1984-06-27 Dobson Park Ind Mine roof support control systems
DE3111875A1 (en) * 1981-03-26 1982-10-14 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen ELECTROHYDRAULIC EXTENSION CONTROL FOR UNDERGROUND MINING COMPANIES
GB2142074B (en) * 1983-06-21 1987-04-23 Dobson Park Ind Control of mine roof supports
DE3404302C1 (en) * 1984-02-08 1985-06-05 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Control device for a hydraulic stepping frame
DE3801593A1 (en) * 1988-01-21 1989-08-03 Hemscheidt Maschf Hermann GROUP CONTROL FOR HYDRAULIC SCREAM EXTENSION
DE3824522A1 (en) * 1988-07-20 1990-01-25 Kloeckner Becorit Gmbh METHOD FOR BACKING A STRUCTURAL BUILDING
US5428959A (en) * 1994-08-01 1995-07-04 Illinois Tool Works Inc. Pneumatic control circuit
CN112524109A (en) * 2020-12-02 2021-03-19 辽宁工程技术大学 Four-point hoisting balance method for hydraulic support

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548198A (en) * 1945-11-15 1951-04-10 Charles H Cosnett Dual control for the throttle and reversing means of pressure fluid engines
US2540710A (en) * 1947-08-21 1951-02-06 Westinghouse Air Brake Co Fluid pressure control apparatus
US2940428A (en) * 1954-08-10 1960-06-14 Bendix Aviat Corp Parallel hydraulic control system
GB961225A (en) * 1961-06-12 1964-06-17 Electro Hydraulics Ltd Hydraulically operated advancing roof support systems
GB959492A (en) * 1961-11-21 1964-06-03 Dowty Technical Developements Mining apparatus
GB1023827A (en) * 1963-06-21 1966-03-23 Dowty Mining Equipment Ltd Roof support assembly
DE1249796B (en) * 1963-09-06 1967-09-14

Also Published As

Publication number Publication date
US3906738A (en) 1975-09-23
FR2175735A1 (en) 1973-10-26
FR2175735B1 (en) 1976-08-27
GB1420862A (en) 1976-01-14
DE2212686C3 (en) 1979-03-22
DE2212686A1 (en) 1973-09-20
DE2212686B2 (en) 1978-07-20

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: GEWERKSCHAFT EISENHUTTE WESTFALIA

Effective date: 19900131