EP0360071A1 - Grue pour montage sur véhicules - Google Patents

Grue pour montage sur véhicules Download PDF

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Publication number
EP0360071A1
EP0360071A1 EP89116432A EP89116432A EP0360071A1 EP 0360071 A1 EP0360071 A1 EP 0360071A1 EP 89116432 A EP89116432 A EP 89116432A EP 89116432 A EP89116432 A EP 89116432A EP 0360071 A1 EP0360071 A1 EP 0360071A1
Authority
EP
European Patent Office
Prior art keywords
jack
arm
operative
column
articulated
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Withdrawn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
EP89116432A
Other languages
German (de)
English (en)
Inventor
Luigi Guidetti
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
Publication of EP0360071A1 publication Critical patent/EP0360071A1/fr
Withdrawn legal-status Critical Current

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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
    • B66C23/54—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 pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors

Definitions

  • the present invention relates to an improved crane for mounting on vehicles.
  • the technical aim of the present invention is to provide an improved crane for mounting on vehicles which can solve the above described problem with a single structure and furthermore provides a more fluid-like actuation than is currently available.
  • an improved crane for mounting on vehicles comprising a main column which is rotatable about a substantially vertical axis and supports an operative arm which is articulated thereto, said arm being movable according to angles lying in vertical planes by at least one fluid-dynamic jack interposed therebetween, characterized in that a lower end of said jack is articulated to said column and an upper end of said jack is connected to a hinge for further pivoting together with corresponding ends of at least one second jack, interposed between said first jack and said operative arm, and at least one connecting rod, the opposite end of said connecting rod being pivoted coaxially in the same point of rotation and articulation between said operative arm and said main column, said first jack and said second jack providing lifting torques which have lever arms of presettable minimum and maximum extent.
  • the reference numeral 1 generally indicates an improved crane for mounting on vehicles which comprises a main column 2 which can rotate about a vertical axis A.
  • the main column 2 supports a protruding operative arm 3 which is articulated to the upper end of said column with at least one hinge 4 (or equivalent device); the corresponding end of a connecting rod 5 is connected to said hinge and rotates coaxially thereto, and the opposite end of said rod is coupled, by virtue of a further hinge 6, to the coinciding ends of a first jack 7 and a second jack 8 which are both fluid-dynamically actuated; the first jack 7 is located between said hinge 6 and the column 2, while the second jack 8 is located between said hinge 6 and the arm 3.
  • the Cartesian graph illustrated in figure 4 illustrates the qualitative behaviors of force curves: respectively, " ⁇ ” is a curve related to a conventional crane suitable for operating with considerable ranges, “ ⁇ ” is a curve which indicates the same forces related to the invention, and “ ⁇ ” is a curve illustrating the characteristic of the forces of a conventional crane adapted to operate with limited ranges.
  • the axis of the abscissas plots indicative load values in kgm; the ordinates plot the width of the lifting angle of the arm 3 with respect to a horizontal configuration.
  • the arm 3 moves from the folded idle configuration, as illustrated in figure 3, to its operative configuration: it can thus rise and/or fold conventionally according to the requirements.
  • the elevation angle with respect for example to a horizontal axis is divided into two half-angles with the concomitant action of the jacks 7 and 8 and of the rod 5, which acts as a spacer-like element between the axis A′ of the column 2 and the longitudinal axis B of the jack 7, thus maintaining therebetween a minimum lever arm, indicated by B′, even when said operative arm 3 is raised to the maximum possible height.
  • This division of the lifting angle determines a more fluid operation of the crane and, as can be qualitatively observed in the graph of figure 4 for the curve " ⁇ ", after a progressive decrease of the available effort, a portion substantially comprised between 70° and 90 ° of elevation of the arm 3 in which said applicable effort remains substantially constant.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP89116432A 1988-09-07 1989-09-06 Grue pour montage sur véhicules Withdrawn EP0360071A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8840131A IT1225186B (it) 1988-09-07 1988-09-07 Gru di sollevamento di tipo perfezionato per il montaggio su veicoli
IT4013188 1988-09-07

Publications (1)

Publication Number Publication Date
EP0360071A1 true EP0360071A1 (fr) 1990-03-28

Family

ID=11248625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116432A Withdrawn EP0360071A1 (fr) 1988-09-07 1989-09-06 Grue pour montage sur véhicules

Country Status (2)

Country Link
EP (1) EP0360071A1 (fr)
IT (1) IT1225186B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT331U1 (de) * 1994-05-17 1995-08-25 Palfinger Ag Ladekran
US6079577A (en) * 1996-04-30 2000-06-27 Heikkilae; Risto Loader
WO2006066293A1 (fr) * 2004-12-20 2006-06-29 Rochus Penz Grue de chargement
CN102887440A (zh) * 2012-11-01 2013-01-23 长沙桑尼重工机械有限公司 多功能智能随车旋挖起重机
EP3333112A1 (fr) 2016-12-09 2018-06-13 Cargotec Patenter AB Outil de manipulation de charges et grue hydraulique comprenant un tel outil de manipulation de charge
EP3336043A1 (fr) * 2016-12-16 2018-06-20 Cargotec Patenter AB Grue hydraulique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB988308A (en) * 1964-01-15 1965-04-07 Hydrauliska Ind Aktiebolaget Improvements in articulated luffing-arms for use in lifting apparatus
FR2001413A1 (fr) * 1968-02-06 1969-09-26 Kaspar Klaus
DE2029998A1 (de) * 1969-06-18 1970-12-23 Poclain Societe Anonyme, Le Plessis-Belleville, Oise (Frankreich) Verfahren zur Regelung des Anhebens eines an einem Rahmen angelenkten Arms und Hebevorrichtung zur Durchführung dieses Verfahrens
GB1470488A (en) * 1975-05-21 1977-04-14 Hiab Foco Ab Crane adapted to be mounted on a vehicle
FR2600634A1 (fr) * 1986-06-24 1987-12-31 Guilhem Claire Dispositif de commande d'articulation de deux bras d'un e ngin

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB988308A (en) * 1964-01-15 1965-04-07 Hydrauliska Ind Aktiebolaget Improvements in articulated luffing-arms for use in lifting apparatus
FR2001413A1 (fr) * 1968-02-06 1969-09-26 Kaspar Klaus
DE2029998A1 (de) * 1969-06-18 1970-12-23 Poclain Societe Anonyme, Le Plessis-Belleville, Oise (Frankreich) Verfahren zur Regelung des Anhebens eines an einem Rahmen angelenkten Arms und Hebevorrichtung zur Durchführung dieses Verfahrens
GB1470488A (en) * 1975-05-21 1977-04-14 Hiab Foco Ab Crane adapted to be mounted on a vehicle
FR2600634A1 (fr) * 1986-06-24 1987-12-31 Guilhem Claire Dispositif de commande d'articulation de deux bras d'un e ngin

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT331U1 (de) * 1994-05-17 1995-08-25 Palfinger Ag Ladekran
US6079577A (en) * 1996-04-30 2000-06-27 Heikkilae; Risto Loader
WO2006066293A1 (fr) * 2004-12-20 2006-06-29 Rochus Penz Grue de chargement
CN102887440A (zh) * 2012-11-01 2013-01-23 长沙桑尼重工机械有限公司 多功能智能随车旋挖起重机
CN102887440B (zh) * 2012-11-01 2014-11-05 长沙桑尼重工机械有限公司 多功能智能随车旋挖起重机
EP3333112A1 (fr) 2016-12-09 2018-06-13 Cargotec Patenter AB Outil de manipulation de charges et grue hydraulique comprenant un tel outil de manipulation de charge
WO2018104042A1 (fr) 2016-12-09 2018-06-14 Cargotec Patenter Ab Outil de manipulation de charges et grue hydraulique comportant un tel outil de manipulation de charges
EP3336043A1 (fr) * 2016-12-16 2018-06-20 Cargotec Patenter AB Grue hydraulique
WO2018108523A1 (fr) * 2016-12-16 2018-06-21 Cargotec Patenter Ab Grue hydraulique
CN110049940A (zh) * 2016-12-16 2019-07-23 卡哥特科专利许可有限公司 液压起重机
CN110049940B (zh) * 2016-12-16 2020-09-11 卡哥特科专利许可有限公司 液压起重机

Also Published As

Publication number Publication date
IT1225186B (it) 1990-11-02
IT8840131A0 (it) 1988-09-07

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Effective date: 19901001