GB8709167D0 - Hydraulic working cylinder - Google Patents

Hydraulic working cylinder

Info

Publication number
GB8709167D0
GB8709167D0 GB878709167A GB8709167A GB8709167D0 GB 8709167 D0 GB8709167 D0 GB 8709167D0 GB 878709167 A GB878709167 A GB 878709167A GB 8709167 A GB8709167 A GB 8709167A GB 8709167 D0 GB8709167 D0 GB 8709167D0
Authority
GB
United Kingdom
Prior art keywords
working cylinder
hydraulic working
hydraulic
cylinder
working
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.)
Granted
Application number
GB878709167A
Other versions
GB2190963A (en
GB2190963B (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB8709167D0 publication Critical patent/GB8709167D0/en
Publication of GB2190963A publication Critical patent/GB2190963A/en
Application granted granted Critical
Publication of GB2190963B publication Critical patent/GB2190963B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • F15B11/0365—Tandem constructions
    • 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
    • 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
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1433—End caps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Actuator (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Details Of Reciprocating Pumps (AREA)
GB8709167A 1986-05-05 1987-04-16 Hydraulic mining prop Expired GB2190963B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU185486A HU195988B (en) 1986-05-05 1986-05-05 Hydraulic working cylinder particularly hydraulic support used at mining

Publications (3)

Publication Number Publication Date
GB8709167D0 true GB8709167D0 (en) 1987-05-20
GB2190963A GB2190963A (en) 1987-12-02
GB2190963B GB2190963B (en) 1989-10-18

Family

ID=10956525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8709167A Expired GB2190963B (en) 1986-05-05 1987-04-16 Hydraulic mining prop

Country Status (3)

Country Link
DE (1) DE3712635A1 (en)
GB (1) GB2190963B (en)
HU (1) HU195988B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU198980B (en) * 1988-01-08 1989-12-28 Veszpremi Szenbanyak Hydraulic working cylinder particularly hydraulic prop used in mining
CN101205810B (en) * 2007-12-13 2011-06-29 中煤北京煤矿机械有限责任公司 Mining hydraulic support self-boosting system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB893050A (en) * 1957-07-25 1962-04-04 Margot Von Linsingen Improvements in or relating to hydraulic pit props

Also Published As

Publication number Publication date
GB2190963A (en) 1987-12-02
HUT43680A (en) 1987-11-30
DE3712635C2 (en) 1989-02-16
DE3712635A1 (en) 1987-11-12
GB2190963B (en) 1989-10-18
HU195988B (en) 1988-08-29

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee