FR2870533A1 - DEVICE FOR CONTROLLING DESCENT OF A HYDRAULIC CRIC - Google Patents

DEVICE FOR CONTROLLING DESCENT OF A HYDRAULIC CRIC

Info

Publication number
FR2870533A1
FR2870533A1 FR0405412A FR0405412A FR2870533A1 FR 2870533 A1 FR2870533 A1 FR 2870533A1 FR 0405412 A FR0405412 A FR 0405412A FR 0405412 A FR0405412 A FR 0405412A FR 2870533 A1 FR2870533 A1 FR 2870533A1
Authority
FR
France
Prior art keywords
chamber
reservoir
column
primary valve
fluid
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
FR0405412A
Other languages
French (fr)
Other versions
FR2870533B1 (en
Inventor
Robert Picot
Michel Mounier
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.)
VICTORY INTERNAT SA SA
Original Assignee
VICTORY INTERNAT SA SA
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 VICTORY INTERNAT SA SA filed Critical VICTORY INTERNAT SA SA
Priority to FR0405412A priority Critical patent/FR2870533B1/en
Priority to EP05356081A priority patent/EP1598306A1/en
Publication of FR2870533A1 publication Critical patent/FR2870533A1/en
Application granted granted Critical
Publication of FR2870533B1 publication Critical patent/FR2870533B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

Ce cric hydraulique comprend :- une semelle destinée à venir sur un surface d'appui,- une colonne liée à la semelle,- un fût cylindrique montée coulissant sur la colonne et délimitant avec celle-ci une chambre, et- une pompe susceptible d'aspirer un fluide incompressible contenu dans un réservoir et de le refouler dans la chambre de manière à déplacer le fût par rapport à la colonne et ainsi à soulever une charge en appui sur le fût.Selon l'invention, le cric comprend un dispositif de commande comprenant :- un canal primaire (20) de petite section, reliant la chambre au réservoir, obturé par un clapet primaire (I) autorisant le passage du fluide depuis la chambre vers le réservoir, le canal primaire (20) présentant une dimension telle que le clapet primaire (I) peut être ouvert sous un action maximale d'environ 20 daN permettant de s'opposer à la pression exercée par le fluide sur le clapet primaire (I) lorsque le cric supporte une charge.This hydraulic jack comprises: - a sole intended to come onto a bearing surface, - a column linked to the sole, - a cylindrical barrel mounted to slide on the column and delimiting therewith a chamber, and - a pump capable of '' suck an incompressible fluid contained in a reservoir and push it back into the chamber so as to move the barrel relative to the column and thus to lift a load resting on the barrel. According to the invention, the jack comprises a device for control comprising: - a primary channel (20) of small section, connecting the chamber to the reservoir, closed by a primary valve (I) allowing the passage of the fluid from the chamber to the reservoir, the primary channel (20) having such a dimension that the primary valve (I) can be opened under a maximum action of approximately 20 daN making it possible to oppose the pressure exerted by the fluid on the primary valve (I) when the jack is supporting a load.

FR0405412A 2004-05-18 2004-05-18 DEVICE FOR CONTROLLING DESCENT OF A HYDRAULIC CRIC Expired - Fee Related FR2870533B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0405412A FR2870533B1 (en) 2004-05-18 2004-05-18 DEVICE FOR CONTROLLING DESCENT OF A HYDRAULIC CRIC
EP05356081A EP1598306A1 (en) 2004-05-18 2005-05-17 Control device for the lowering of a hydraulic jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0405412A FR2870533B1 (en) 2004-05-18 2004-05-18 DEVICE FOR CONTROLLING DESCENT OF A HYDRAULIC CRIC

Publications (2)

Publication Number Publication Date
FR2870533A1 true FR2870533A1 (en) 2005-11-25
FR2870533B1 FR2870533B1 (en) 2007-10-12

Family

ID=34942707

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0405412A Expired - Fee Related FR2870533B1 (en) 2004-05-18 2004-05-18 DEVICE FOR CONTROLLING DESCENT OF A HYDRAULIC CRIC

Country Status (2)

Country Link
EP (1) EP1598306A1 (en)
FR (1) FR2870533B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3095978B1 (en) * 2019-05-13 2022-06-24 Automatisation Et Controle Du Serrage SELF-CONTAINED PALLET

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR810986A (en) * 1935-12-19 1937-04-03 Metivier Lang & Cie Improvements to the lowering device for hydraulic jacks
US2352390A (en) * 1943-05-13 1944-06-27 Everett R Kirkland Hydraulic jack
US2863285A (en) * 1957-02-15 1958-12-09 Timothy C Pomeroy Hydraulic jack
US5775672A (en) * 1997-02-21 1998-07-07 Hsu; Kun-Shan Release valve for lifting devices

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2616765A1 (en) * 1987-06-22 1988-12-23 Victory Sa IMPROVED HYDRAULIC CRIC FOR THE LIFTING AND HANDLING OF HEAVY LOADS OF MULTIPLE TONS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR810986A (en) * 1935-12-19 1937-04-03 Metivier Lang & Cie Improvements to the lowering device for hydraulic jacks
US2352390A (en) * 1943-05-13 1944-06-27 Everett R Kirkland Hydraulic jack
US2863285A (en) * 1957-02-15 1958-12-09 Timothy C Pomeroy Hydraulic jack
US5775672A (en) * 1997-02-21 1998-07-07 Hsu; Kun-Shan Release valve for lifting devices

Also Published As

Publication number Publication date
FR2870533B1 (en) 2007-10-12
EP1598306A1 (en) 2005-11-23

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20100129