PL210760A1 - Uklad rozrzadu zaworowego przy przesuwnej ramownicy obudowy wyrobisk - Google Patents

Uklad rozrzadu zaworowego przy przesuwnej ramownicy obudowy wyrobisk

Info

Publication number
PL210760A1
PL210760A1 PL21076078A PL21076078A PL210760A1 PL 210760 A1 PL210760 A1 PL 210760A1 PL 21076078 A PL21076078 A PL 21076078A PL 21076078 A PL21076078 A PL 21076078A PL 210760 A1 PL210760 A1 PL 210760A1
Authority
PL
Poland
Prior art keywords
valve timing
sliding frame
frame housing
housing
sliding
Prior art date
Application number
PL21076078A
Other languages
English (en)
Original Assignee
Bochumer Eisen Heintzmann
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 Bochumer Eisen Heintzmann filed Critical Bochumer Eisen Heintzmann
Publication of PL210760A1 publication Critical patent/PL210760A1/pl

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
    • E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms

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)
  • Fluid-Driven Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
PL21076078A 1977-12-13 1978-11-07 Uklad rozrzadu zaworowego przy przesuwnej ramownicy obudowy wyrobisk PL210760A1 (pl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2755392 1977-12-13

Publications (1)

Publication Number Publication Date
PL210760A1 true PL210760A1 (pl) 1979-09-24

Family

ID=6025960

Family Applications (1)

Application Number Title Priority Date Filing Date
PL21076078A PL210760A1 (pl) 1977-12-13 1978-11-07 Uklad rozrzadu zaworowego przy przesuwnej ramownicy obudowy wyrobisk

Country Status (5)

Country Link
US (1) US4220424A (pl)
FR (1) FR2411987A1 (pl)
GB (1) GB2009828A (pl)
PL (1) PL210760A1 (pl)
ZA (1) ZA786549B (pl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212747A1 (de) * 1982-04-06 1983-10-06 Gewerk Eisenhuette Westfalia Einrichtung zur hubsteuerung einer zylinddergruppe eines hydraulischen ausbausystems, insbesondere zum setzen der stempel einer schreitausbaueinheit
CN113638753B (zh) * 2021-08-16 2024-01-05 哈尔滨学院 一种土木工程施工用支护结构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB982978A (en) * 1960-08-10 1965-02-10 Dowty Mining Equipment Ltd Roof supports suitable for use in mines
GB1023125A (en) * 1963-07-22 1966-03-16 Dowty Mining Equipment Ltd Mining apparatus
GB1202358A (en) * 1966-10-14 1970-08-19 Dowty Mining Equipment Ltd Mine roof support systems
GB1289299A (pl) * 1968-11-02 1972-09-13

Also Published As

Publication number Publication date
ZA786549B (en) 1979-10-31
US4220424A (en) 1980-09-02
FR2411987A1 (fr) 1979-07-13
GB2009828A (en) 1979-06-20

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