Working machine with telescopic boom unit

Details Working machine with telescopic boom unit Working machine with telescopic boom unit

E - Fixed Constructions

02

F

E02F 3/30 (2006.01) E02F 3/413 (2006.01)

Patent

CA 2671347

A working machine (1) includes a frame (3), a body section (2) mounted to the frame (3) for pivotal movement about a vertical axis, a boom unit (7) having a plurality of booms, including a basal boom (7a), telescopically extendable from and retractable to one another. A support arm (14) is mounted to the body section (2) for pivotal movement about a horizontal axis. An end of the support arm (14) is coupled with the basal boom (7a). The basal boom (7a) is pivotable relative to the support arm (14) about a horizontal axis. A first hydraulically operable device extends from the body section (2) to the basal boom (7a) for pivoting the basal boom (7a) relative to the support arm (14) about the horizontal axis.

L'invention concerne une machine de travail (1) qui comprend un cadre (3), une section de corps (2) montée sur le cadre (3) pour un mouvement de pivotement autour d'un axe vertical, une unité de bras (7) ayant une pluralité de bras, comprenant un bras de base (7a), pouvant s'étendre et se rétracter de façon télescopique les uns par rapport aux autres. Un bras de support (14) est monté sur la section de corps (2) pour un mouvement de pivotement autour d'un axe horizontal. Une extrémité du bras de support (14) est couplée au bras de base (7a). Le bras de base (7a) est apte à pivoter par rapport au bras de support (14) autour d'un axe horizontal. Un premier dispositif à actionnement hydraulique s'étend de la section de corps (2) au bras de base (7a) pour faire pivoter le bras de base (7a) par rapport au bras de support (14) autour de l'axe horizontal.

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