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FR2427995A1 - Mobile crane with load lifted by parallelogram linkage - enables load to be supported by constant force in any position - Google Patents

Mobile crane with load lifted by parallelogram linkage - enables load to be supported by constant force in any position

Info

Publication number
FR2427995A1
FR2427995A1 FR7817250A FR7817250A FR2427995A1 FR 2427995 A1 FR2427995 A1 FR 2427995A1 FR 7817250 A FR7817250 A FR 7817250A FR 7817250 A FR7817250 A FR 7817250A FR 2427995 A1 FR2427995 A1 FR 2427995A1
Authority
FR
France
Prior art keywords
load
mobile crane
supported
parallelogram linkage
bar
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
FR7817250A
Other languages
French (fr)
Other versions
FR2427995B1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7817250A priority Critical patent/FR2427995A1/en
Publication of FR2427995A1 publication Critical patent/FR2427995A1/en
Application granted granted Critical
Publication of FR2427995B1 publication Critical patent/FR2427995B1/fr
Granted 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
    • B66C23/005—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 with balanced jib, e.g. pantograph arrangement, the jib being moved manually

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

The mobile crane has a framework (19) with two horizontally sliding bearings which support a bar (1). The bar (1) carries a second bar (2) which forms part of a parallelogram linkage (7, 12, 11, 15). An extension (17) of the link (7) is mounted on a pivot (10) fixed to the frame (19) and an extension of the link (12) carries a hook (13) to support a load. The crane is actuated by a motor which drives the bar in either horizontal direction. With this linkage, the force required to be exerted by the motor for a given load, is constant irrespective of the position of the load.
FR7817250A 1978-06-05 1978-06-05 Mobile crane with load lifted by parallelogram linkage - enables load to be supported by constant force in any position Granted FR2427995A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7817250A FR2427995A1 (en) 1978-06-05 1978-06-05 Mobile crane with load lifted by parallelogram linkage - enables load to be supported by constant force in any position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7817250A FR2427995A1 (en) 1978-06-05 1978-06-05 Mobile crane with load lifted by parallelogram linkage - enables load to be supported by constant force in any position

Publications (2)

Publication Number Publication Date
FR2427995A1 true FR2427995A1 (en) 1980-01-04
FR2427995B1 FR2427995B1 (en) 1980-10-31

Family

ID=9209278

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7817250A Granted FR2427995A1 (en) 1978-06-05 1978-06-05 Mobile crane with load lifted by parallelogram linkage - enables load to be supported by constant force in any position

Country Status (1)

Country Link
FR (1) FR2427995A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2781709A1 (en) * 1998-07-30 2000-02-04 Alain Pernot Material handling system manual or automatic with self- balancing linkage
CN109305178A (en) * 2018-09-14 2019-02-05 湖北时瑞达重型工程机械有限公司 A kind of manipulator upright bar flatcar

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1436139A (en) * 1965-03-30 1966-04-22 Conco Engineering Works Balancing device for lifting device
FR90225E (en) * 1966-06-22 1967-11-03 Conco Engineering Works Balancing device for lifting device
FR2019505A1 (en) * 1968-09-28 1970-07-03 Intranszmas Magyar Bolga
FR2033711A5 (en) * 1969-03-19 1970-12-04 Conco Inc
FR2206266A1 (en) * 1972-11-14 1974-06-07 Motoda Electronics
FR2231586A1 (en) * 1973-06-04 1974-12-27 Conco Inc
GB1440596A (en) * 1973-07-19 1976-06-23 Hitachi Ltd Electrically operated handling apparatus for a load
FR2315460A1 (en) * 1975-06-24 1977-01-21 Foralkranar Ab Arm for automatically handling loads - has parallelogram type linkage with vertically adjustable pivots

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1436139A (en) * 1965-03-30 1966-04-22 Conco Engineering Works Balancing device for lifting device
FR90225E (en) * 1966-06-22 1967-11-03 Conco Engineering Works Balancing device for lifting device
FR2019505A1 (en) * 1968-09-28 1970-07-03 Intranszmas Magyar Bolga
FR2033711A5 (en) * 1969-03-19 1970-12-04 Conco Inc
FR2206266A1 (en) * 1972-11-14 1974-06-07 Motoda Electronics
FR2231586A1 (en) * 1973-06-04 1974-12-27 Conco Inc
GB1440596A (en) * 1973-07-19 1976-06-23 Hitachi Ltd Electrically operated handling apparatus for a load
FR2315460A1 (en) * 1975-06-24 1977-01-21 Foralkranar Ab Arm for automatically handling loads - has parallelogram type linkage with vertically adjustable pivots

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2781709A1 (en) * 1998-07-30 2000-02-04 Alain Pernot Material handling system manual or automatic with self- balancing linkage
CN109305178A (en) * 2018-09-14 2019-02-05 湖北时瑞达重型工程机械有限公司 A kind of manipulator upright bar flatcar
CN109305178B (en) * 2018-09-14 2023-10-27 湖北时瑞达重型工程机械有限公司 Manipulator pole setting flatcar

Also Published As

Publication number Publication date
FR2427995B1 (en) 1980-10-31

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Legal Events

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CL Concession to grant licences
ST Notification of lapse
ST Notification of lapse