Global patent index - EP 1072553 A1

EP 1072553 A1 2001-01-31 - Folding device for a crane boom with nestable elements

Title (en)

Folding device for a crane boom with nestable elements

Title (de)

Zusammenklappvorrichtung eines Kranauslegers mit ineinandersetzbaren Elementen

Title (fr)

Dispositif de repliage d'une flèche de grue à éléments emboîtables

Publication

EP 1072553 A1 (FR)

Application

EP 00420135 A

Priority

FR 9909688 A

Abstract (en)

The folding elements (12, 13) of a crane jib, are articulated around a horizontal axis (17). The folding mechanism consists of a double acting jack (32), in the central vertical plane of the jib, and linked at one end, by a horizontal axis (35), to the rear element (12) of the jib, and at the other end, to a straight rod connector (38), linked to the rear part of the forward element (13). A curved link (41) is also connected to the forward end of the jack and to the front part of the rear element of the jib. The curved connector carries a horizontal bar, which is guided by the arc guides (30), cut in the side plates (31).

Abstract (fr)

Ce dispositif de dépliage/repliage motorisé, à commande indépendante, s'applique à une flèche de grue (10) dont deux éléments consécutifs (12, 13) sont articulés l'un à l'autre autour d'un axe horizontal (17) situé sensiblement à mi-hauteur de la flèche (10), et possèdent des sections respectives permettant leur emboîtement, en position repliée. La motorisation comprend un vérin à double effet (32) et un embiellage (33). Le vérin (32) est articulé à l'élément de flèche arrière (12), à hauteur des membrures supérieures (19, 26) ainsi qu'à deux bielles (38, 41), l'une droite et l'autre coudée, qui forment l'embiellage. Une bielle (38) est articulée à la partie arrière de l'élément de flèche avant (13), et l'autre bielle (41) est articulée à la partie avant de l'élément de flèche arrière (12), au niveau des parties inférieures de ces éléments (12, 13). <IMAGE>

IPC 1-7 (main, further and additional classification)

B66C 23/26

IPC 8 full level (invention and additional information)

B66C 23/42 (2006.01); B66C 23/26 (2006.01); B66C 23/64 (2006.01); B66C 23/68 (2006.01); B66C 23/687 (2006.01)

CPC (invention and additional information)

B66C 23/344 (2013.01); B66C 23/26 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE DE ES IT

EPO simple patent family

EP 1072553 A1 20010131; EP 1072553 B1 20040102; DE 60007488 D1 20040205; DE 60007488 T2 20041125; ES 2211485 T3 20040716; FR 2796632 A1 20010126; FR 2796632 B1 20010824; JP 2001063961 A 20010313; RU 2249561 C2 20050410; US 6290078 B1 20010918

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