DE2132981A1 - Steuergeraet fuer hydraulische grubenausbaugespanne - Google Patents

Steuergeraet fuer hydraulische grubenausbaugespanne

Info

Publication number
DE2132981A1
DE2132981A1 DE19712132981 DE2132981A DE2132981A1 DE 2132981 A1 DE2132981 A1 DE 2132981A1 DE 19712132981 DE19712132981 DE 19712132981 DE 2132981 A DE2132981 A DE 2132981A DE 2132981 A1 DE2132981 A1 DE 2132981A1
Authority
DE
Germany
Prior art keywords
switching part
axis
pressure medium
bores
rotatable
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.)
Pending
Application number
DE19712132981
Other languages
German (de)
English (en)
Inventor
Walter Weirich
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
Priority to DE19712132981 priority Critical patent/DE2132981A1/de
Priority to FR7144585A priority patent/FR2144637B2/fr
Priority to GB2061572A priority patent/GB1390460A/en
Publication of DE2132981A1 publication Critical patent/DE2132981A1/de
Pending 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)
DE19712132981 1971-07-02 1971-07-02 Steuergeraet fuer hydraulische grubenausbaugespanne Pending DE2132981A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19712132981 DE2132981A1 (de) 1971-07-02 1971-07-02 Steuergeraet fuer hydraulische grubenausbaugespanne
FR7144585A FR2144637B2 (https=) 1971-07-02 1971-12-13
GB2061572A GB1390460A (en) 1971-07-02 1972-05-03 Devices for controlling mining apparatus

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
DE2132981A1 true DE2132981A1 (de) 1973-01-18

Family

ID=5812500

Family Applications (1)

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

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182585A (en) * 1977-10-11 1980-01-08 Hermann Hemscheidt Maschinenfabrik Gmbh & Co. Double-plate control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182585A (en) * 1977-10-11 1980-01-08 Hermann Hemscheidt Maschinenfabrik Gmbh & Co. Double-plate control device

Also Published As

Publication number Publication date
FR2144637A2 (https=) 1973-02-16
FR2144637B2 (https=) 1974-06-07
GB1390460A (en) 1975-04-16

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Legal Events

Date Code Title Description
OHA Expiration of time for request for examination