FR2410755A1 - TELESCOPIC HYDRAULIC CYLINDER - Google Patents

TELESCOPIC HYDRAULIC CYLINDER

Info

Publication number
FR2410755A1
FR2410755A1 FR7834242A FR7834242A FR2410755A1 FR 2410755 A1 FR2410755 A1 FR 2410755A1 FR 7834242 A FR7834242 A FR 7834242A FR 7834242 A FR7834242 A FR 7834242A FR 2410755 A1 FR2410755 A1 FR 2410755A1
Authority
FR
France
Prior art keywords
piston
hydraulic cylinder
telescopic hydraulic
duct
mushroom
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
FR7834242A
Other languages
French (fr)
Other versions
FR2410755B1 (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.)
Mayer Fordertechnik Walte GmbH
Original Assignee
Mayer Fordertechnik Walte 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 Mayer Fordertechnik Walte GmbH filed Critical Mayer Fordertechnik Walte GmbH
Publication of FR2410755A1 publication Critical patent/FR2410755A1/en
Application granted granted Critical
Publication of FR2410755B1 publication Critical patent/FR2410755B1/fr
Granted 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
    • B66F3/28—Adaptations or arrangements of pistons telescopic
    • 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)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

VERIN HYDRAULIQUE TELESCOPIQUE COMPORTANT UN PISTON PLEIN ET UN PISTON CREUX DANS LE FOND DUQUEL EST PREVU UN CLAPET ANTI-RETOUR QUI OBTURE UN CONDUIT DE TROP-PLEIN ALLANT DE LA CHAMBRE DU VERIN AU VOLUME INTERIEUR DU PISTON CREUX. ON PREVOIT DANS LE FOND 14 DU PISTON CREUX 2 UN PISTON DIFFERENTIEL 18 EN FORME DE CHAMPIGNON TRAVERSE PAR UN CONDUIT A ETRANGLEMENT 26, LEQUEL PISTON COULISSE DANS UNE CHAMBRE 15 EN FORME DE CHAMPIGNON, DONT L'EXTREMITE 16 DEBOUCHE DANS LE CONDUIT DE TROP-PLEIN 17, LE PIED DE PISTON 19 OBTURANT EN TANT QUE CLAPET ANTI-RETOUR LE CONDUIT DE TROP-PLEIN 17 AU POINT MORT HAUT DU PISTON DIFFERENTIEL 18. APPLICATION AUX VERINS SYNCHRONISES, EN PARTICULIER D'ASCENSEURS.TELESCOPIC HYDRAULIC CYLINDER INCLUDING A FULL PISTON AND A HOLLOW PISTON IN THE BOTTOM OF WHICH A NON-RETURN VALVE IS PROVIDED THAT CLOSES AN OVERFLOW DUCT GOING FROM THE CYLINDER CHAMBER TO THE INTERNAL VOLUME OF THE HOLLOW PISTON. PROVIDED IN THE BOTTOM 14 OF THE HOLLOW PISTON 2 A DIFFERENTIAL PISTON 18 IN THE SHAPE OF A MUSHROOM CROSSED BY A CHANGING DUCT 26, WHICH PISTON SLIDES IN A CHAMBER 15 IN THE SHAPE OF MUSHROOM, THE END OF WHICH 16 EXTENDS INTO THE OVERFLOW DUCT. FULL 17, THE FOOT OF PISTON 19 CLOSING AS A NON-RETURN VALVE THE OVERFLOW DUCT 17 AT THE TOP NEUTRAL OF THE DIFFERENTIAL PISTON 18. APPLICATION TO SYNCHRONIZED CYLINDERS, IN PARTICULAR LIFT.

FR7834242A 1977-12-05 1978-12-05 TELESCOPIC HYDRAULIC CYLINDER Granted FR2410755A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772754016 DE2754016C3 (en) 1977-12-05 1977-12-05 Hydraulic telescopic lifting cylinder

Publications (2)

Publication Number Publication Date
FR2410755A1 true FR2410755A1 (en) 1979-06-29
FR2410755B1 FR2410755B1 (en) 1982-12-10

Family

ID=6025295

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7834242A Granted FR2410755A1 (en) 1977-12-05 1978-12-05 TELESCOPIC HYDRAULIC CYLINDER

Country Status (5)

Country Link
AT (1) AT358772B (en)
CH (1) CH634899A5 (en)
DE (1) DE2754016C3 (en)
FR (1) FR2410755A1 (en)
GB (1) GB2009322B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509409A (en) * 1983-02-07 1985-04-09 Towmotor Corporation Pump arrangement for a linear fluid operated device
AU666004B2 (en) * 1992-06-09 1996-01-25 Gradash Pty Ltd Heavy equipment jack
DE19736141A1 (en) * 1997-08-20 1999-03-04 Hydraulik Liftsysteme Walter M Hydraulic cylinder stable against bending
CZ13947U1 (en) * 2003-07-21 2004-01-26 Alois Príborský Hydraulic jack
CN102410278A (en) * 2011-11-11 2012-04-11 三一重工股份有限公司 Multistage single-action hydraulic cylinder and engineering machinery provided with same
DE102013017062A1 (en) 2013-10-15 2015-04-16 Eisenmann Ag Feed unit and conveyor system for conveying load carriers
CN103639445A (en) * 2013-11-18 2014-03-19 无锡京华重工装备制造有限公司 Balance oil cylinder device of vertical lathe
DE102016207529A1 (en) * 2016-05-02 2017-11-02 Hydro Systems Kg Lifter for an airplane

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1229402A (en) * 1959-04-24 1960-09-07 Toussaint & Hess Gmbh Hydraulic piston control with telescopic pistons
FR1441870A (en) * 1965-07-01 1966-06-10 Toussaint & Hess Gmbh Hydraulic control for telescopic pistons

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2104502C3 (en) * 1971-02-01 1973-10-31 Fa. Heinrich Brauer, 4150 Krefeld Hydraulic lifting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1229402A (en) * 1959-04-24 1960-09-07 Toussaint & Hess Gmbh Hydraulic piston control with telescopic pistons
FR1441870A (en) * 1965-07-01 1966-06-10 Toussaint & Hess Gmbh Hydraulic control for telescopic pistons

Also Published As

Publication number Publication date
DE2754016C3 (en) 1981-11-19
GB2009322A (en) 1979-06-13
DE2754016A1 (en) 1979-06-07
FR2410755B1 (en) 1982-12-10
DE2754016B2 (en) 1981-02-12
ATA864178A (en) 1980-02-15
GB2009322B (en) 1982-07-14
CH634899A5 (en) 1983-02-28
AT358772B (en) 1980-09-25

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Legal Events

Date Code Title Description
ST Notification of lapse