AU610892B2 - Directing and supporting cylinder for a lemniscate drive means - Google Patents

Directing and supporting cylinder for a lemniscate drive means Download PDF

Info

Publication number
AU610892B2
AU610892B2 AU16734/88A AU1673488A AU610892B2 AU 610892 B2 AU610892 B2 AU 610892B2 AU 16734/88 A AU16734/88 A AU 16734/88A AU 1673488 A AU1673488 A AU 1673488A AU 610892 B2 AU610892 B2 AU 610892B2
Authority
AU
Australia
Prior art keywords
piston rod
piston
pistons
cylinder
working chamber
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.)
Ceased
Application number
AU16734/88A
Other languages
English (en)
Other versions
AU1673488A (en
Inventor
Karl Lerchbaum
Werner Toferer
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.)
Sandvik Mining and Construction GmbH
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Publication of AU1673488A publication Critical patent/AU1673488A/en
Application granted granted Critical
Publication of AU610892B2 publication Critical patent/AU610892B2/en
Assigned to VOEST-ALPINE BERGTECHNIK GESELLSCHAFT MBH reassignment VOEST-ALPINE BERGTECHNIK GESELLSCHAFT MBH Alteration of Name(s) in Register under S187 Assignors: VOEST-ALPINE A.G.
Anticipated expiration legal-status Critical
Ceased 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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0427—Shield operating devices; Hinges therefor
    • 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
    • F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Actuator (AREA)
AU16734/88A 1987-05-29 1988-05-27 Directing and supporting cylinder for a lemniscate drive means Ceased AU610892B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1380/87 1987-05-29
AT0138087A AT387430B (de) 1987-05-29 1987-05-29 Richt- und stuetzzylinder fuer ein lemniskatengetriebe

Publications (2)

Publication Number Publication Date
AU1673488A AU1673488A (en) 1988-12-01
AU610892B2 true AU610892B2 (en) 1991-05-30

Family

ID=3512629

Family Applications (1)

Application Number Title Priority Date Filing Date
AU16734/88A Ceased AU610892B2 (en) 1987-05-29 1988-05-27 Directing and supporting cylinder for a lemniscate drive means

Country Status (3)

Country Link
AT (1) AT387430B (de)
AU (1) AU610892B2 (de)
ZA (1) ZA883114B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1219353B (it) * 1988-05-31 1990-05-11 Fiatgeotech Attuatore a comando tramite fluido
US5314268A (en) * 1993-01-13 1994-05-24 Jennmar Corporation Non-metallic reinforcing rod and method of use in supporting a rock formation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU493571B2 (en) * 1975-05-19 1977-10-27 Clark Equipment Co. Cylinder and piston assembly
AU6829081A (en) * 1980-03-19 1981-09-24 Creusot-Loire Hydraulic shock absorber

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2729564C2 (de) * 1977-06-30 1979-08-09 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Lemniskatenf ührung für hydraulische Schreitausbaugestelle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU493571B2 (en) * 1975-05-19 1977-10-27 Clark Equipment Co. Cylinder and piston assembly
AU6829081A (en) * 1980-03-19 1981-09-24 Creusot-Loire Hydraulic shock absorber

Also Published As

Publication number Publication date
ZA883114B (en) 1988-11-08
AU1673488A (en) 1988-12-01
AT387430B (de) 1989-01-25
ATA138087A (de) 1988-06-15

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