Loader used in timber harvesting machines

Details Loader used in timber harvesting machines Loader used in timber harvesting machines

B - Operations, Transporting

66

C

B66C 23/683 (2006.01) B66C 23/42 (2006.01) E02F 3/30 (2006.01)

Patent

CA 2398741

The invention relates to a loader, which includes: a base (1) equipped with a turning device, for attaching the loader to a carrier machine; a telescopic main boom (2) including a frame (2') pivoted on the base (1), and a telescopic component (6) arranged to move linearly in relation to it and pivoted on the base (1); a hinged boom (7) pivoted on the main boom (2); a lifting cylinder (3) pivoted at its first end to the base (1) and at its second end directly or indirectly to the main boom (2) to operate it; an arm (9, 9') directly or indirectly attached to the hinged boom (7), pivoted to the main boom (2); a manoeuvring cylinder (5) placed to the main boom (2) between the frame (2') and the telescopic component (6), the telescopic component (6) is pivoted to the said arm (9, 9') operating the hinged boom (7) by means of the said first pivot (12); the loader includes a link rod (8) pivoted at one end of the frame (2') of the main boom (2) and at the other end to the second pivot (13) of the said arm (9, 9'), which is at a distance from the said first pivot (12).

L'invention concerne un chargeur comprenant une base (1) équipée d'un dispositif rotatif et servant à fixer ce chargeur à un engin porteur, une flèche principale télescopique (2) comportant une armature (2') pivotant sur cette base (1) et un composant télescopique (6) conçu pour se déplacer linéairement et pivotant sur ladite base (1), une flèche articulée (7) pivotant sur la flèche principale (2), un cylindre de levage (3) pivotant au niveau de sa première extrémité vers la base (1) et au niveau de sa seconde extrémité directement ou indirectement vers le bras principal (2) de manière à actionner ce dernier, un bras (9, 9') directement ou indirectement fixé à la flèche articulée (7) et pivotant vers le bras principal (2), ainsi qu'un cylindre de manoeuvre (5) placé sur la flèche principale (2) entre l'armature (2') et le composant télescopique (6). Celui-ci pivote sur le bras (9, 9') de manière à actionner la flèche articulée (7) au moyen d'un premier élément de pivotement (12). Ce chargeur comprend une tige de liaison (8) pivotant au niveau d'une extrémité vers l'armature (2') de la flèche principale (2) et au niveau de l'autre extrémité vers un second élément de pivotement (13) du bras (9, 9'), lequel se trouve à une distance donnée dudit premier pivot (12).

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