GB1402214A - Device for feeding a hydraulic load element mounted on a telescopic structure by means of two jacks - Google Patents

Device for feeding a hydraulic load element mounted on a telescopic structure by means of two jacks

Info

Publication number
GB1402214A
GB1402214A GB3381873A GB3381873A GB1402214A GB 1402214 A GB1402214 A GB 1402214A GB 3381873 A GB3381873 A GB 3381873A GB 3381873 A GB3381873 A GB 3381873A GB 1402214 A GB1402214 A GB 1402214A
Authority
GB
United Kingdom
Prior art keywords
fluid
rams
ram
jacks
feeding
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
GB3381873A
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.)
Poclain SA
Original Assignee
Poclain 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 Poclain SA filed Critical Poclain SA
Publication of GB1402214A publication Critical patent/GB1402214A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/306—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with telescopic dipper-arm or boom
    • 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

Abstract

1402214 Grab excavators POCLAIN 16 July 1973 [2 Aug 1972] 33818/73 Heading E1F [Also in Division F1] A telescopic boom 1, 2, which supports a hydraulically operated device 17 and is extended by a ram 4, 5, houses a pair of similar rams 19, 20, which are connected to the opposite way round between members 1 and 2, through which fluid is supplied to the device 17. To extend the boom fluid is fed to the rams 4, 5 by a pump 10 and a valve 13. When this occurs the ram 19 extends and the ram 20 contracts. Fluid is transferred between the rams 19, 20 through conduits 32, 29, and 33, 30, and since the rams are similar no extra fluid is required and no fluid is returned to the reservoir during extension or retraction. Fluid is supplied to the device 17 by a pump 39 and a valve 42. Fig. 2 (not shown) illustrates an embodiment in which the supply conduits to the device 17 are arranged differently.
GB3381873A 1972-08-02 1973-07-16 Device for feeding a hydraulic load element mounted on a telescopic structure by means of two jacks Expired GB1402214A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7227878A FR2194895B1 (en) 1972-08-02 1972-08-02

Publications (1)

Publication Number Publication Date
GB1402214A true GB1402214A (en) 1975-08-06

Family

ID=9102759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3381873A Expired GB1402214A (en) 1972-08-02 1973-07-16 Device for feeding a hydraulic load element mounted on a telescopic structure by means of two jacks

Country Status (10)

Country Link
US (1) US3858396A (en)
JP (1) JPS4958607A (en)
AR (1) AR196446A1 (en)
BE (1) BE802167A (en)
BR (1) BR7305739D0 (en)
DE (1) DE2339292A1 (en)
ES (1) ES417489A1 (en)
FR (1) FR2194895B1 (en)
GB (1) GB1402214A (en)
IT (1) IT991932B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294572A (en) * 1978-04-10 1981-10-13 Pattison Jack E Internal fluid communication system for power cylinders
CA2165708A1 (en) * 1994-12-21 1996-06-22 Mitsuhiro Kishi Oil supply mechanism in a deep excavator
DE29722394U1 (en) * 1997-12-18 1999-04-22 Oberniehaus Rainer Implement
US20110126700A1 (en) * 2007-07-12 2011-06-02 Johannsen Thorkil J Undercarriage for a telescopic frame
JP4945681B1 (en) * 2010-11-24 2012-06-06 株式会社コスメック Cylinder device with booster mechanism
EP2568084B1 (en) 2011-09-07 2014-01-08 EPSILON Kran GmbH. Telescopic crane arm
US9541194B2 (en) * 2012-02-16 2017-01-10 Kosmek Ltd. Cylinder device with force multiplier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160076A (en) * 1961-12-14 1964-12-08 Parker Hannifin Corp Fluid system and relief valve assembly therefor
US3481251A (en) * 1968-02-05 1969-12-02 Warner Swasey Co Machine with hydraulic boom

Also Published As

Publication number Publication date
AR196446A1 (en) 1973-12-27
IT991932B (en) 1975-08-30
BE802167A (en) 1973-11-05
FR2194895B1 (en) 1976-05-14
BR7305739D0 (en) 1974-08-29
ES417489A1 (en) 1976-03-01
FR2194895A1 (en) 1974-03-01
US3858396A (en) 1975-01-07
JPS4958607A (en) 1974-06-06
DE2339292A1 (en) 1974-02-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee