초록 ▼

A lift axle assembly for supporting an auxiliary axle and wheels and selectively moving the auxiliary axle between in use and storage positions. The auxiliary axle is supported using two sets of upper and lower support arms pivotally connected between saddles attached to the axle and support hangers

A lift axle assembly for supporting an auxiliary axle and wheels and selectively moving the auxiliary axle between in use and storage positions. The auxiliary axle is supported using two sets of upper and lower support arms pivotally connected between saddles attached to the axle and support hangers which are attached to the vehicle. Lift air springs selectively push the upper support arms vertically upwardly for rotating the support arms and placing the auxiliary axle in the storage position. The pivotal connections of the lower support arm as well as the pivotal connection of the upper support arm to the support hanger are of a bushing type allowing both rotational motion about the axis of rotation and coning for allowing twisting of the support arms about their longitudinal axes. The pivotal connection between the upper support arms and the saddles are of an antitwist type allowing pivotal motion about the axis of rotation but preventing coning or twisting of the upper support arms about their longitudinal axes.

대표청구항 ▼

[ What is claimed is:] [1.] A lift axle assembly for a wheeled vehicle comprising:a lift axle support frame attachable to a wheeled vehicle;a pair of saddles attached to an axle;a first set of upper and lower support arms pivotally connected between one of said saddles and said support frame;a secon

[ What is claimed is:] [1.] A lift axle assembly for a wheeled vehicle comprising:a lift axle support frame attachable to a wheeled vehicle;a pair of saddles attached to an axle;a first set of upper and lower support arms pivotally connected between one of said saddles and said support frame;a second set of upper and lower support arms pivotally connected between the other of said saddles and said support frame;bushing means in at least one of said pivotal connections of each of said first and second sets of support arms for allowing pivotal motion about an axis of rotation and coning; andantitwist means in at least another one of said pivotal connections of each of said first and second sets of support arms for allowing pivotal motion substantially only about an axis of rotation and preventing coning.