This arm support structure is equipped with: a bracket on which base end section of an arm of a suspension device is positioned between a pair of facing walls which face one another at a distance in vehicle chassis front-rear direction; axial support members which axially support the base end section on the bracket, by being inserted into long holes formed to pass through facing walls and through-holes formed to pass through the base end section; eccentric plate members which are formed in a circular shape and capable of integrally rotating with axial support members, and have an engaging hole capable of engaging an axial support member formed to pass therethrough at a location offset in radial direction from the circular center thereof; and a plurality of contact parts which contact the circumferential edge of the eccentric plate members, and rotatably support the eccentric plate members.

Provided is a suspension device including a drive wheel, a first driven wheel that is disposed on one side in a front-rear direction with respect to the drive wheel, a second driven wheel that is disposed on the other side in the front-rear direction with respect to the drive wheel, a bogie link member that supports the drive wheel and the first driven wheel and is oscillatable around a first oscillation axis, and a rocker link member that supports the second driven wheel and the bogie link member and is oscillatable around a second oscillation axis. When viewed from a left-right direction, the first oscillation axis is not on the same vertical line as a rotation axis of the drive wheel and is located above the rotation axis in a vertical direction and located inside a contour of the drive wheel.

A suspension system for a vehicle having a frame includes a first interface member configured to be positioned on a first lateral side of the frame and a second interface member configured to be positioned on an opposing second lateral side of the frame. The first interface member and the second interface member are positioned along a common central axis. The suspension system also includes a first swing arm coupled to the first interface member and configured to rotate about the common central axis, a second swing arm coupled to the second interface member and configured to rotate about the common central axis, and a sway bar coupled to the first interface member and the second interface member. The sway bar is positioned coaxially with the common central axis and extends between the first swing arm and the second swing arm.

A steering and suspension assembly for the rear wheels of an off-road vehicle includes: a) a first suspension component; b) a first steering component; c) a CV axle; d) a portal box assembly; e) a hydraulic steering assembly for moving the first steering component a distance effective to turn the vehicle at least 2° in either direction when the assembly is mounted to a wheel hub; f) a first suspension connection bracket for connecting the first suspension component to the rear wall of the portal box assembly; and g) a first steering connection bracket for connecting the first steering component to the rear wall of the portal box assembly. The portal box assembly includes: i) a housing having a rear wall, a front wall, and a side wall, wherein the rear wall includes a vehicle axle opening effective to receive the end of said CV axle, and wherein the front wall includes an output shaft opening effective to allow an output shaft to extend outward from the housing; ii) a linking mechanism housed in the housing and effective for linking a CV axle received in the vehicle axle opening to an output shaft; and iii) an output shaft operably connectable via the linking mechanism to the CV axle, and effective to rotate upon rotation of the stock axle.

Provided is a suspension device including a drive wheel, a first driven wheel that is disposed on one side in a front-rear direction with respect to the drive wheel, a second driven wheel that is disposed on the other side in the front-rear direction with respect to the drive wheel, a bogie link member that supports the drive wheel and the first driven wheel and is oscillatable around a first oscillation axis, and a rocker link member that supports the second driven wheel and the bogie link member and is oscillatable around a second oscillation axis. When viewed from a left-right direction, the first oscillation axis is not on the same vertical line as a rotation axis of the drive wheel and is located above the rotation axis in a vertical direction and located inside a contour of the drive wheel.

A tandem wheel assembly for a work vehicle includes a tandem wheel housing having a center opening extending along a pivot axis and wheel end openings extending along associated wheel end axes. The tandem wheel housing is pivotally mounted to a chassis of the work vehicle about the pivot axis. A center sprocket is rotatably disposed within the tandem wheel housing. Wheel end assemblies are disposed at the wheel end openings and each includes a wheel end sprocket, a wheel end gear train, and a wheel end hub. A pair of reaction bars are being pivotally coupled at first ends to the chassis and at second ends to a component of the respective wheel end assembly. A pivot dampening system is positioned, at least in part, axially between the tandem wheel housing and either the chassis or the component of at least one of the wheel end assemblies. The pivot dampening system is configured to dampen the pivoting of the tandem wheel housing tandem wheel housing relative to the chassis.

A wheel suspension system can include a wheel interface having a wheel interface axis about which a wheel rotates when connected to the wheel interface, and an arm connected to the wheel interface and rotatable with respect to the wheel interface about a first axis, wherein the arm is connectable to a reference frame and rotatable with respect to the reference frame about a second axis. In some embodiments, the first axis and the second axis are offset with respect to the wheel interface axis. In some embodiments, the first axis and the second axis are off-parallel.

A tandem wheel assembly for a work vehicle includes a tandem wheel housing having a center opening extending along a pivot axis and wheel end openings extending along associated wheel end axes. The tandem wheel housing is pivotally mounted to a chassis of the work vehicle about the pivot axis. A center sprocket is rotatably disposed within the tandem wheel housing. Wheel end assemblies are disposed at the wheel end openings and each includes a wheel end sprocket, a wheel end gear train, and a wheel end hub. A pair of reaction bars are being pivotally coupled at first ends to the chassis and at second ends to a component of the respective wheel end assembly. A pivot dampening system is positioned, at least in part, axially between the tandem wheel housing and either the chassis or the component of at least one of the wheel end assemblies. The pivot dampening system is configured to dampen the pivoting of the tandem wheel housing tandem wheel housing relative to the chassis.

A suspension device according to one embodiment of the present disclosure is equipped with: an upper arm; a lower arm; a leaf spring positioned so as to extend in the vehicle widthwise direction in a manner such that an end section thereof is provided on the lower arm; a first bracket configured in a manner such that a shock absorber connected to the lower arm is connected to the outside of a side member in the vehicle widthwise direction; an upper bushing capable of transmitting force between the leaf spring and a suspension cross member; and a second bracket which is independent from the first bracket and is positioned below the side member between the side member and the leaf spring so as to be capable of transmitting the elastic force of the leaf spring to the side member via the upper bushing.

A suspension device according to one embodiment of the present disclosure is equipped with: an upper arm; a lower arm; a leaf spring positioned so as to extend in the vehicle widthwise direction in a manner such that an end section thereof is provided on the lower arm; a first bracket configured in a manner such that a shock absorber connected to the lower arm is connected to the outside of a side member in the vehicle widthwise direction; an upper bushing capable of transmitting force between the leaf spring and a suspension cross member; and a second bracket which is independent from the first bracket and is positioned below the side member between the side member and the leaf spring so as to be capable of transmitting the elastic force of the leaf spring to the side member via the upper bushing.