FR2402093A1 - HYDRAULIC DISTRIBUTOR INTENDED TO SYNCHRONIZE THE ADVANCE AND BACKWARD OF TWO HYDRAULIC CONTROL UNITS, ESPECIALLY FOR THE TELESCOPIC BOOM OF A CRANE - Google Patents

HYDRAULIC DISTRIBUTOR INTENDED TO SYNCHRONIZE THE ADVANCE AND BACKWARD OF TWO HYDRAULIC CONTROL UNITS, ESPECIALLY FOR THE TELESCOPIC BOOM OF A CRANE

Info

Publication number
FR2402093A1
FR2402093A1 FR7825185A FR7825185A FR2402093A1 FR 2402093 A1 FR2402093 A1 FR 2402093A1 FR 7825185 A FR7825185 A FR 7825185A FR 7825185 A FR7825185 A FR 7825185A FR 2402093 A1 FR2402093 A1 FR 2402093A1
Authority
FR
France
Prior art keywords
hydraulic
crane
advance
cylinders
telescopic boom
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.)
Withdrawn
Application number
FR7825185A
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.)
Coles Cranes Ltd
Original Assignee
Coles Cranes Ltd
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 Coles Cranes Ltd filed Critical Coles Cranes Ltd
Publication of FR2402093A1 publication Critical patent/FR2402093A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
    • 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors
    • 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
    • F15B15/165—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type with synchronisation of sections

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Jib Cranes (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Distributeur hydraulique de commande et de synchronisation destiné à commander l'avance et le recul de deux organes hydrauliques de commande tels que des vérins. Il comprend un rotor tournant dans un corps et comportant des conduits destinés à relier les orifices d'admission et de sortie pour commander les vérins. La rotation du rotor est produite par un câble dont une extrémité passe autour d'un tambour fixé au rotor et dont l'autre extrémité est reliée à l'un des vérins hydrauliques ou aux deux vérins, de sorte qu'en cas de désynchronisme, le câble s'enroule ou se déroule et fait tourner le rotor de manière à modifier l'écoulement du fluide vers les vérins ou à partir de ceux-ci. Application à la commande de la flèche télescopique d'une grue ou d'un appareil analogue.Hydraulic control and synchronization distributor intended to control the advance and retreat of two hydraulic control members such as cylinders. It comprises a rotor rotating in a body and comprising conduits intended to connect the inlet and outlet ports for controlling the jacks. The rotation of the rotor is produced by a cable, one end of which passes around a drum fixed to the rotor and the other end of which is connected to one of the hydraulic cylinders or to both cylinders, so that in the event of desynchronism, the cable winds or unwinds and rotates the rotor so as to alter the flow of fluid to or from the cylinders. Application to the control of the telescopic boom of a crane or a similar device.

FR7825185A 1977-08-31 1978-08-31 HYDRAULIC DISTRIBUTOR INTENDED TO SYNCHRONIZE THE ADVANCE AND BACKWARD OF TWO HYDRAULIC CONTROL UNITS, ESPECIALLY FOR THE TELESCOPIC BOOM OF A CRANE Withdrawn FR2402093A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3638877 1977-08-31

Publications (1)

Publication Number Publication Date
FR2402093A1 true FR2402093A1 (en) 1979-03-30

Family

ID=10387692

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7825185A Withdrawn FR2402093A1 (en) 1977-08-31 1978-08-31 HYDRAULIC DISTRIBUTOR INTENDED TO SYNCHRONIZE THE ADVANCE AND BACKWARD OF TWO HYDRAULIC CONTROL UNITS, ESPECIALLY FOR THE TELESCOPIC BOOM OF A CRANE

Country Status (6)

Country Link
JP (1) JPS5452279A (en)
DE (1) DE2838323A1 (en)
FI (1) FI782653A (en)
FR (1) FR2402093A1 (en)
GB (1) GB2005773A (en)
IT (1) IT1098800B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131751A1 (en) * 1991-09-24 1993-03-25 Krupp Industrietech Telescopic jib for mobile crane - has four telescopic sections linked in pairs by cable and extended by two-stage differential cylinder
EP0882895A1 (en) * 1997-06-04 1998-12-09 Inventio Ag Device for synchronising telescopic actuators for hydraulic elevators
US6382080B1 (en) * 1997-06-04 2002-05-07 Inventio Ag Apparatus for synchronization of telescopic rams in hydraulic elevators
CN103221626B (en) 2010-09-09 2015-07-15 国民油井华高有限公司 Downhole rotary drilling apparatus with formation-interfacing members and control system
US8869916B2 (en) 2010-09-09 2014-10-28 National Oilwell Varco, L.P. Rotary steerable push-the-bit drilling apparatus with self-cleaning fluid filter
CN102052362A (en) * 2010-12-28 2011-05-11 太仓高德升降机有限公司 Synchronous hydraulic cylinder device
CN107559259B (en) * 2017-08-25 2024-08-09 中国水利水电科学研究院 Hydraulic control system and hinge dam assembly

Also Published As

Publication number Publication date
IT7827240A0 (en) 1978-08-31
FI782653A (en) 1979-03-01
JPS5452279A (en) 1979-04-24
DE2838323A1 (en) 1979-03-08
GB2005773A (en) 1979-04-25
IT1098800B (en) 1985-09-18

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Legal Events

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