Vertically adjustable hitch

B - Operations – Transporting – 60 – D

Patent

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Details

B60D 1/46 (2006.01) A01B 59/04 (2006.01) A01B 59/042 (2006.01)

Patent

CA 2224841

A vertically adjustable hitch for an agricultural tractor includes a pair of guide rails and a retainer which moves up and down on the rails. A chain has fixed ends and a central region which engages a pair of pulleys which are rotatably mounted on the retainer. As the pulleys rotate, they roll along the chain and move the retainer. A drive mechanism is coupled to rotate at least one of the pulley. A locking mechanism is releasably engageable with the chain to prevent movement of the retainer relative to the chain.

Attelage réglable verticalement utilisé sur un tracteur agricole. Il comprend deux rails de guidage et une pièce de retenue montant et descendant sur ces rails. Une chaîne dont les extrémités sont fixes et dont une portion centrale engage deux poulies montées de manière à tourner sur la pièce de retenue. Comme les poulies tournent, elles roulent sur la chaîne et déplacent la pièce de retenue. Un mécanisme d'entraînement est couplé de manière à faire tourner au moins une des poulies. Un mécanisme de verrouillage peut être engagé, de façon non permanente, avec la chaîne pour empêcher le déplacement de la pièce de retenue par rapport à la chaîne.

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