Height adjustable chassis for regulating the orientation of...

B - Operations – Transporting – 62 – D

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B62D 24/04 (2006.01) B60G 99/00 (2010.01) B60G 17/00 (2006.01) B62D 49/06 (2006.01) B62D 55/075 (2006.01) B62D 55/116 (2006.01)

Patent

CA 2438972

A chassis is described which is constructed of two lower side frames (1, 2) which at each end are provided with a wheel or caterpillar track. On each of the two lower side members, there is a horizontal bearing (7, 8). Each of these bearings are connected to an upper vertical side member (3, 4) which at their upper end is connected to two parallel cross members (5, 6) through horizontal bearings (9-12) for the development of a parallelogram connection. Between the lower and upper side members, there are two double-acting hydraulic cylinders (14, 15). These can be connected in parallel in order to make a weight distribution possible. By means of a regulation valve (23) between pressure side and suction side, respectively, on the double-acting hydraulic cylinders (14, 15) the upper part of the chassis can swing back and forth in the longitudinal direction of the side members. Between the two cross members (5, 6) there is a double-acting hydraulic cylinder (13) which can swing the upper part of the chassis back and forth in the side member's transverse direction by means of a regulation valve (24). Thus, it is possible to adjust a chassis member to a preferred orientation irrespective of the slope of the surface.

L'invention concerne un châssis constitué de deux cadres latéraux inférieures (1, 2) pourvus, à chaque extrémité, d'une roue ou d'une chenille. Chaque élément latéral porte un palier horizontal (7, 8). Chaque palier est relié à un élément latéral vertical supérieur (3, 4), lequel, à son extrémité supérieure, est raccordé à deux éléments transversaux (5, 6) parallèles par le biais des paliers horizontaux (9-12) aux fins du développement d'une connexion parallélogramme. Entre les éléments latéraux supérieur et inférieur, deux vérins hydrauliques (14, 15) à double effet, peuvent être reliés en parallèle afin de rendre possible une distribution de poids. Une soupape de régulation (23) entre le côté pression et le côté aspiration, respectivement, sur les vérins hydrauliques (14, 15) à double effet, permet à la partie supérieure du châssis de basculer en avant et en arrière dans le sens longitudinal des éléments latéraux. Entre les éléments transversaux (5, 6), un vérin hydraulique (13) à double effet permet de faire balancer en avant et en arrière la partie supérieure du châssis dans la direction transversale de l'élément latéral grâce à une soupape de régulation (24). Il est donc possible de régler un élément de châssis dans une orientation préférée, indépendamment de la pente de la surface.

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