Hitch assembly for a work machine

Details Hitch assembly for a work machine Hitch assembly for a work machine

A - Human Necessities

01

B

A01B 59/06 (2006.01) A01B 59/041 (2006.01)

Patent

CA 2339017

A hitch for a work machine such as an agricultural tractor permits controlled towing of an implement behind the work machine. The hitch is attached to the machine frame. The hitch includes first and second draft arms that are pivotally connected with and spaced apart on the frame by intermediate links. The intermediate links provide pivotal movement of the draft arms constrained about a first horizontal axis. The intermediate links also provide pivotal movement of the first draft arm constrained about a second axis, and of the second draft arm constrained about a third axis. At least one draft cylinder is connected to one of the intermediate links and to a respective draft arm. The hitch incorporates multiple degrees of movement in a compact package and is useful as a steerable component of the machine to provide positive steering force.

Un attelage destiné à une machine de travail (10) telle qu'un tracteur agricole permet le remorquage commandé d'un outil derrière la machine de travail (10). -'attelage est fixé au châssis (12) de la machine. L'attelage comprend des premier et second bras de traction (40, 70) reliés pivotants au châssis (12) et espacés de celui-ci par des liaisons intermédiaires (50, 80). Les liaisons intermédiaires (50, 80) permettent le mouvement pivotant des bras de traction (40, 70) limité autour d'un premier axe horizontal (30). Les liaisons intermédiaires (50, 80) permettent également le mouvement pivotant du premier bras de traction (40) limité autour d'un second axe (62), et du second bras de traction (70) limité autour d'un troisième axe (90). Au moins un cylindre de traction (140, 142) est connecté à une des liaisons intermédiaires (50, 80) et à un bras de traction respectif (40, 70). L'attelage présente des degrés multiples de mouvement en un ensemble compact et il est utile comme élément orientable de la machine (10) pour fournir une force de direction positive.

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