Articulated dozer with frame structure for decreased height...

E - Fixed Constructions – 02 – F

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E02F 3/76 (2006.01) B62D 55/065 (2006.01) B62D 55/116 (2006.01)

Patent

CA 2527894

An articulated loader has an articulated chassis and two A-frames. The points of the A-frames face each other. The articulated chassis includes a front portion and a rear portion. Likewise, there is a front or first A-frame and a rear or second A- frame. The A-frames are connected to the overall chassis at points close to but offset from the point of vehicle articulation via ball joints and via hydraulic suspension cylinders toward the wider portions of the "A"s. The vehicle is propelled along the ground by tracks that are independently suspended. The A-frames are of approximate equal length along the axis of the vehicle and the ball joints are located as close as practical to the articulation joint. Thus, any vertical forces at the ball joints due to variations in tractive efforts for the vehicle tend to be equal and opposite in direction and to, therefore, minimize any chassis height variations.

Une chargeuse articulée comprend un châssis articulé et deux cadres en A. Les pointes des cadres en A se font face. Le châssis articulé comprend une partie avant et une partie arrière. De même, il y a un premier ou cadre avant en A et un deuxième ou cadre arrière an A. Les cadres en A sont raccordés au châssis à des pointes à proximité, mais décalées, de la pointe de l'articulation du véhicule au moyen de joints à rotule et de cylindres de suspension hydraulique vers les parties les plus larges des "A". Le véhicule est propulsé le long du sol par des chenilles qui sont indépendamment suspendues. Les cadres en A sont à peu près de longueur égale le long de l'axe du véhicule et les joints à rotule sont situés aussi près qu'il est pratique des joints d'articulation. Par conséquent, une force verticale aux joints à rotule en raison des variations dans les efforts de traction du véhicule tend à être égale et en direction opposée et, par conséquent, à minimiser les variations de la hauteur du châssis.

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