ZA71150B - Hydraulic double telescopic mine prop - Google Patents

Hydraulic double telescopic mine prop

Info

Publication number
ZA71150B
ZA71150B ZA710150A ZA71150A ZA71150B ZA 71150 B ZA71150 B ZA 71150B ZA 710150 A ZA710150 A ZA 710150A ZA 71150 A ZA71150 A ZA 71150A ZA 71150 B ZA71150 B ZA 71150B
Authority
ZA
South Africa
Prior art keywords
hydraulic double
double telescopic
mine prop
telescopic mine
prop
Prior art date
Application number
ZA710150A
Inventor
G Bell
W Gehrmann
Original Assignee
Kloeckner Werke Ag
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 Kloeckner Werke Ag filed Critical Kloeckner Werke Ag
Publication of ZA71150B publication Critical patent/ZA71150B/en

Links

Classifications

    • 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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Check Valves (AREA)
  • Control Of Presses (AREA)
ZA710150A 1970-01-16 1971-01-11 Hydraulic double telescopic mine prop ZA71150B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2001809A DE2001809C3 (en) 1970-01-16 1970-01-16 Hydraulic double telescopic ram

Publications (1)

Publication Number Publication Date
ZA71150B true ZA71150B (en) 1971-10-27

Family

ID=5759759

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA710150A ZA71150B (en) 1970-01-16 1971-01-11 Hydraulic double telescopic mine prop

Country Status (4)

Country Link
BE (1) BE761635A (en)
DE (1) DE2001809C3 (en)
FR (1) FR2075424A5 (en)
ZA (1) ZA71150B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150643A1 (en) * 1981-12-21 1983-06-30 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen HYDRAULIC TELESCOPE STAMP, ESPECIALLY FOR UNDERGROUND SCREAM EXTENSION, LIKE, IN PARTICULAR, SHIELD EXTENSION RACK
FR2711398A1 (en) * 1993-10-18 1995-04-28 Bourgeois Alain Telescopic ram with simultaneous extension

Also Published As

Publication number Publication date
BE761635A (en) 1971-06-16
DE2001809B2 (en) 1973-10-04
FR2075424A5 (en) 1971-10-08
DE2001809A1 (en) 1971-07-22
DE2001809C3 (en) 1974-04-25

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