JPS4934883B1 - - Google Patents

Info

Publication number
JPS4934883B1
JPS4934883B1 JP45024921A JP2492170A JPS4934883B1 JP S4934883 B1 JPS4934883 B1 JP S4934883B1 JP 45024921 A JP45024921 A JP 45024921A JP 2492170 A JP2492170 A JP 2492170A JP S4934883 B1 JPS4934883 B1 JP S4934883B1
Authority
JP
Japan
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.)
Pending
Application number
JP45024921A
Other languages
Japanese (ja)
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 JPS4934883B1 publication Critical patent/JPS4934883B1/ja
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/003—Circuit elements having no moving parts for process regulation, (e.g. chemical processes, in boilers or the like); for machine tool control (e.g. sewing machines, automatic washing machines); for liquid level control; for controlling various mechanisms; for alarm circuits; for ac-dc transducers for control purposes
    • 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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith
    • 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)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Lining And Supports For Tunnels (AREA)
JP45024921A 1969-03-26 1970-03-26 Pending JPS4934883B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB05839/69A GB1261110A (en) 1969-03-26 1969-03-26 Improvements in or relating to fluidic logic controlled hydraulic mine roof support systems

Publications (1)

Publication Number Publication Date
JPS4934883B1 true JPS4934883B1 (en) 1974-09-18

Family

ID=10066459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP45024921A Pending JPS4934883B1 (en) 1969-03-26 1970-03-26

Country Status (6)

Country Link
US (1) US3664138A (en)
JP (1) JPS4934883B1 (en)
AU (1) AU1275170A (en)
DE (1) DE2013404A1 (en)
FR (1) FR2035897A1 (en)
GB (1) GB1261110A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1407801A (en) * 1971-10-28 1975-09-24 Dowty Mining Equipment Ltd Hydraulic apparatus
DE2700829C2 (en) * 1977-01-11 1986-04-17 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulic extension control
DE3207517C2 (en) * 1982-03-03 1985-09-05 Gebr. Eickhoff Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Control for support frames for underground mining
DE3538251C1 (en) * 1985-10-28 1986-11-06 Bochumer Eisenhütte Heintzmann GmbH & Co KG, 4630 Bochum Method for controlling devices of the underground mine operation to which a hydraulic working medium can be applied
PL202665B1 (en) * 2002-12-16 2009-07-31 Tiefenbach Control Sys Gmbh Timbering and walling control for controlling the movements of timbering and walling units in the coal face of a mine
CN102606183A (en) * 2012-04-10 2012-07-25 重庆友诚自动化工程技术有限公司 Portable mining hydraulic support controller and control method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL256743A (en) * 1959-10-12
GB1063468A (en) * 1964-10-26 1967-03-30 Dowty Electrics Ltd Mining apparatus
GB1121542A (en) * 1965-03-18 1968-07-31 Gullick Ltd Improvements in or relating to the remote control of supports or chocks in self-advancing mine roof support 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
US3531159A (en) * 1967-12-14 1970-09-29 Bergwerksverband Gmbh Automatic control systems for use in longwall mine workings

Also Published As

Publication number Publication date
GB1261110A (en) 1972-01-19
FR2035897A1 (en) 1970-12-24
AU1275170A (en) 1971-09-23
DE2013404A1 (en) 1970-10-01
US3664138A (en) 1972-05-23

Similar Documents

Publication Publication Date Title
AU2270770A (en)
AU4221168A (en)
AU450150B2 (en)
JPS4934883B1 (en)
AU2355770A (en)
AU442375B2 (en)
AU427401B2 (en)
AU438128B2 (en)
AU414607B2 (en)
AU442554B2 (en)
AU442285B2 (en)
AU442463B2 (en)
AU442538B2 (en)
AU442322B2 (en)
FR2028518A6 (en)
AU417208B2 (en)
AU442535B2 (en)
AU442357B2 (en)
AU425297B2 (en)
AT308690B (en)
AU442380B2 (en)
AU428074B2 (en)
AU428129B2 (en)
AR203167Q (en)
AU5228269A (en)