FR73004E - Quick bleed device for hydraulic cylinder - Google Patents

Quick bleed device for hydraulic cylinder

Info

Publication number
FR73004E
FR73004E FR54053A FR73004DA FR73004E FR 73004 E FR73004 E FR 73004E FR 54053 A FR54053 A FR 54053A FR 73004D A FR73004D A FR 73004DA FR 73004 E FR73004 E FR 73004E
Authority
FR
France
Prior art keywords
valve
jack
piston
spring
cylinder
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
FR54053A
Other languages
French (fr)
Inventor
Jean-Louis Gratzmuller
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 filed Critical
Application granted granted Critical
Publication of FR73004E publication Critical patent/FR73004E/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
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

755,096. Hydraulic actuation of switches. GRATZMULLER, J. L. Dec. 10, 1954 [Dec. 24, 1953; July 30, 1954], No. 35772/54. Class 38(5) In a single-acting hydraulic jack which is actuated by liquid pressure against a counteracting force, means are provided giving a discharge rate of liquid greater than the feeding rate so that the return stroke of the jack is quicker than the forward stroke. The jack may be used to set a circuit breaker into contact-making position against the action of elastic means. A jack comprises a cylinder 3 and a, piston 4. a spring 5 ensuring the return stroke. For the forward stroke liquid from an accumulator 6 passes through ducts 8, 10 to the upper end of a cylinder 12 containing a piston 13, and through a passage 20 and past ball valve 21 in the piston to the lower end of the cylinder, thence through a port 14 to the jack cylinder. A spring 27 urges a valve 18 integral with the piston 13 on to its seat to close an outlet 15a. If a valve 7 is turned to connect the duct 8 to exhaust, piston 13 is raised, removing the valve 18 from its seat and enabling the liquid in the jack to pass to exhaust. The spring 27 may be replaced by a spring facilitating opening of the valve 18, in which case the spring urging the ball valve 21 to its closed position is strong enough to ensure sufficient differential pressure to hold valve 18 on to its seat.
FR54053A 1954-07-30 1954-07-30 Quick bleed device for hydraulic cylinder Expired FR73004E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR300754X 1954-07-30
FR1099949T 1954-07-30

Publications (1)

Publication Number Publication Date
FR73004E true FR73004E (en) 1960-09-22

Family

ID=26214491

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1099949D Expired FR1099949A (en) 1954-07-30 1953-12-24 Quick bleed device for hydraulic cylinder
FR54053A Expired FR73004E (en) 1954-07-30 1954-07-30 Quick bleed device for hydraulic cylinder

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR1099949D Expired FR1099949A (en) 1954-07-30 1953-12-24 Quick bleed device for hydraulic cylinder

Country Status (3)

Country Link
CH (1) CH330972A (en)
FR (2) FR1099949A (en)
GB (1) GB755096A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0450518A1 (en) * 1990-04-05 1991-10-09 Knorr-Bremse Ag Compressed air actuator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113357221A (en) * 2021-06-29 2021-09-07 中船重工中南装备有限责任公司 Steel ball type hydraulic cylinder with bidirectional mechanical locking

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0450518A1 (en) * 1990-04-05 1991-10-09 Knorr-Bremse Ag Compressed air actuator

Also Published As

Publication number Publication date
CH330972A (en) 1958-06-30
FR1099949A (en) 1955-09-14
GB755096A (en) 1956-08-15

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