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A swing-frame auxiliary axle system for a work vehicle having a main frame including spaced chassis rails is disclosed which includes a pivot frame having a pair of spaced pivot arms connected by a common torque tube and each of which is pivotally mounted to a vehicle chassis rail, the spaced pivot

A swing-frame auxiliary axle system for a work vehicle having a main frame including spaced chassis rails is disclosed which includes a pivot frame having a pair of spaced pivot arms connected by a common torque tube and each of which is pivotally mounted to a vehicle chassis rail, the spaced pivot arms including at least one tag axle and wheel and a cross member at the other end. An operating system is provided for moving the auxiliary axle assembly between a stowed and a support position. An independent modular arm pivot joint and attachment system pivotally mount each of the spaced pivot arms to a corresponding one chassis rails. The operating system also has a tag lever fixed to the torque tube and a hydraulic operating cylinder having a rod end journaled about an independent modular tag lever pivot joint and attachment system, connected between the rod end and the tag lever removably attaching the cylinder rod to operate the tag lever.

대표청구항 ▼

1. A swing-frame auxiliary axle system for a work vehicle having a main frame including spaced chassis rails comprising:(a) an auxiliary axle assembly which includes a pivot frame having a pair of spaced pivot arms having two ends and being connected by a common torque tube close to one end thereof

1. A swing-frame auxiliary axle system for a work vehicle having a main frame including spaced chassis rails comprising:(a) an auxiliary axle assembly which includes a pivot frame having a pair of spaced pivot arms having two ends and being connected by a common torque tube close to one end thereof and each of which is pivotally mounted to a vehicle chassis rail, said spaced pivot arms including at least one tag axle and wheel and a cross member at the other end thereof; (b) an operating system for pivoting said pivot arms thereby moving the auxiliary axle assembly between a stowed position in which the wheels are elevated and a support position in which the wheels engage the ground; and (c) an independent modular arm attachment and pivot joint unit for fastening each of said spaced pivot arms to a corresponding one of said chassis rails and including a pivot joint for said arm wherein each said attachment and pivot joint unit includes integral members with openings therein enabling it to be connected to and removed as a unitary structure from both the pivot arm and a chassis rail using removable fasteners, wherein each said attachment and pivot joint unit fastens one of said spaced pivot arms to said corresponding one of said chassis rails in a manner such that operational wear is limited to each said pivot joint of each removable unit; and wherein each said in independent modular arm attachment unit includes a pivot bracket removably fastened to the corresponding chassis frame rail and including an integral bearing sleeve with a pivot pin journaled therein, said pivot pin being further provided with spaced openings which are removably connected to the corresponding pivot arm.