Vector controlled leveling system for a forestry machine

Details Vector controlled leveling system for a forestry machine Vector controlled leveling system for a forestry machine

A - Human Necessities

01

G

A01G 23/00 (2006.01) A01G 23/08 (2006.01) B62D 55/06 (2006.01)

Patent

CA 2652056

The present invention provides a leveling control system for a forestry machine (10) employing position sensors that relay information about the orientation of the carriage (12) in relation to the swing-house assembly (14) in order to control roll and pitch in a manner that maximizes the operating envelop of the leveling mechanism (38). The angles of pitch and roll of the swing-house assembly (14) in relation to the carriage (12) are measured and/or calculated and a controller (24) limits operation of the leveling mechanism (38) to an operating envelop that may be described in terms of pitch and droll. The cylinders (54, 56) are decelerated gradually as the operating envelop is approached. The controller (24) can include an automatic leveling mode. The controller (24) can change the function of the fore, aft, left and right operator controls so that they are true from the operator's frame of reference regardless of the rotary position of the cab relative to the carriage (12).

La présente invention concerne un système de commande de nivellement pour engin forestier employant des capteurs de positions qui relaient des informations d'orientation du chariot, relativement à l'ensemble cabine pivotante, destinées à contrôler le roulis et le tangage de façon à maximiser l'enveloppe opérationnelle du mécanisme de nivellement. Les angles de roulis et de tangage de l'ensemble cabine pivotante, en corrélation avec le chariot, sont mesurés et/ou calculés, et un dispositif de commande limite le fonctionnement du mécanisme de nivellement à une enveloppe opérationnelle pouvant être décrite en termes de tangage et de roulis. Les cylindres sont décélérés graduellement à mesure que l'enveloppe opérationnelle se rapproche. Le dispositif de commande peut comprendre un mode de nivellement automatique, et peut changer la fonction des commandes de mouvement avant, arrière, gauche ou droite de l'opérateur, de sorte que ces commandes correspondent au système de coordonnées de l'opérateur, quelle que soit la position de rotation de la cabine relativement au chariot.

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