GB1390460A - Devices for controlling mining apparatus - Google Patents

Devices for controlling mining apparatus

Info

Publication number
GB1390460A
GB1390460A GB2061572A GB2061572A GB1390460A GB 1390460 A GB1390460 A GB 1390460A GB 2061572 A GB2061572 A GB 2061572A GB 2061572 A GB2061572 A GB 2061572A GB 1390460 A GB1390460 A GB 1390460A
Authority
GB
United Kingdom
Prior art keywords
holes
pendulum
outlets
inlet
inclination
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
GB2061572A
Other languages
English (en)
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia 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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB1390460A publication Critical patent/GB1390460A/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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control
    • 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

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)
  • Control Of Fluid Pressure (AREA)
  • Reciprocating Pumps (AREA)
GB2061572A 1971-07-02 1972-05-03 Devices for controlling mining apparatus Expired GB1390460A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712132981 DE2132981A1 (de) 1971-07-02 1971-07-02 Steuergeraet fuer hydraulische grubenausbaugespanne

Publications (1)

Publication Number Publication Date
GB1390460A true GB1390460A (en) 1975-04-16

Family

ID=5812500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2061572A Expired GB1390460A (en) 1971-07-02 1972-05-03 Devices for controlling mining apparatus

Country Status (3)

Country Link
DE (1) DE2132981A1 (https=)
FR (1) FR2144637B2 (https=)
GB (1) GB1390460A (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2745631B1 (de) * 1977-10-11 1979-02-08 Hemscheidt Maschf Hermann Mehrfachsteuergeraet fuer hydraulischen Schreitausbau

Also Published As

Publication number Publication date
DE2132981A1 (de) 1973-01-18
FR2144637A2 (https=) 1973-02-16
FR2144637B2 (https=) 1974-06-07

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee