GB1555147A - Hydraulic control valve device - Google Patents

Hydraulic control valve device

Info

Publication number
GB1555147A
GB1555147A GB3459776A GB3459776A GB1555147A GB 1555147 A GB1555147 A GB 1555147A GB 3459776 A GB3459776 A GB 3459776A GB 3459776 A GB3459776 A GB 3459776A GB 1555147 A GB1555147 A GB 1555147A
Authority
GB
United Kingdom
Prior art keywords
control valve
hydraulic control
valve device
hydraulic
valve
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
GB3459776A
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband 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 Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of GB1555147A publication Critical patent/GB1555147A/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
    • 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
    • E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
    • E21D15/155—Built-in cleaning devices
    • 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)
  • Mechanically-Actuated Valves (AREA)
GB3459776A 1975-08-19 1976-08-19 Hydraulic control valve device Expired GB1555147A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752536783 DE2536783C3 (en) 1975-08-19 1975-08-19 Hydraulic control valve device for a hydraulic servomotor, in particular for controlling the pressure medium of hydraulic cylinders in underground longwall mining

Publications (1)

Publication Number Publication Date
GB1555147A true GB1555147A (en) 1979-11-07

Family

ID=5954256

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3459776A Expired GB1555147A (en) 1975-08-19 1976-08-19 Hydraulic control valve device

Country Status (2)

Country Link
DE (1) DE2536783C3 (en)
GB (1) GB1555147A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3637349A1 (en) * 1986-11-03 1988-05-11 Ecker Gmbh Maschbau Hydraulic control unit, in particular for adjacent control in self-advancing support underground

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3637349A1 (en) * 1986-11-03 1988-05-11 Ecker Gmbh Maschbau Hydraulic control unit, in particular for adjacent control in self-advancing support underground

Also Published As

Publication number Publication date
DE2536783A1 (en) 1977-03-17
DE2536783B2 (en) 1977-09-01
DE2536783C3 (en) 1978-04-20

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed