FR1181300A - hydraulic prop - Google Patents

hydraulic prop

Info

Publication number
FR1181300A
FR1181300A FR1181300DA FR1181300A FR 1181300 A FR1181300 A FR 1181300A FR 1181300D A FR1181300D A FR 1181300DA FR 1181300 A FR1181300 A FR 1181300A
Authority
FR
France
Prior art keywords
hydraulic prop
prop
hydraulic
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.)
Expired
Application number
Other languages
French (fr)
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of FR1181300A publication Critical patent/FR1181300A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/26—Adaptations or arrangements of pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • 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
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Safety Valves (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
FR1181300D 1956-08-29 1957-08-19 hydraulic prop Expired FR1181300A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB41566A DE1014501B (en) 1956-08-29 1956-08-29 Hydraulic pit ram with a pressure chamber and a pressure relief valve

Publications (1)

Publication Number Publication Date
FR1181300A true FR1181300A (en) 1959-06-12

Family

ID=6966432

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1181300D Expired FR1181300A (en) 1956-08-29 1957-08-19 hydraulic prop

Country Status (4)

Country Link
BE (1) BE560360A (en)
DE (1) DE1014501B (en)
FR (1) FR1181300A (en)
GB (1) GB861046A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1224684B (en) * 1957-10-25 1966-09-15 Bwg Bergwerk Walzwerk Hydraulic pit ram
NL233516A (en) * 1958-11-24 1965-06-25
DE1090610B (en) * 1959-03-11 1960-10-13 Bwg Bergwerk Walzwerk Overpressure valve set, especially for hydraulic pit rams
DE1137405B (en) * 1959-07-11 1962-10-04 Kloeckner Werke Ag Overpressure valves for hydraulic pit construction
DE1087998B (en) * 1959-08-31 1960-09-01 Bwg Bergwerk Walzwerk Pressure relief valve for hydraulic pit ram
DE1137406B (en) * 1960-06-30 1962-10-04 Kronprinz Ag Hydraulic pit ram
NL277490A (en) * 1961-04-20
CN102650213B (en) * 2012-05-02 2014-10-08 淮南矿业(集团)有限责任公司 Single hydraulic prop three-use valve

Also Published As

Publication number Publication date
BE560360A (en)
DE1014501B (en) 1957-08-29
GB861046A (en) 1961-02-15

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