The present invention relates to a control unit for controlling a chassis system between at least a ground contact point and a frame of a vehicle, the chassis system comprising a leaf spring and a chassis arrangement, said chassis arrangement is adapted to receive a chassis condition input signal and to control a chassis condition of said chassis arrangement in response to said chassis condition input signal, said chassis system further comprising a strain gauge adapted to issue a strain gauge output signal indicative of a strain in said leaf spring, wherein said control unit is adapted to receive said strain gauge output signal and to issue said chassis condition input signal to said chassis arrangement on the basis of said strain gauge output signal. The invention also relates to a method, a chassis system, and a vehicle.

An agricultural vehicle suspension may comprise a spring and a first spindle operably coupled with the spring in a spindle axial direction. A stop body may be operably coupled to the first spindle in a cylinder axial direction. The stop body may be configured to limit an axial length of travel of the suspension relative to the first spindle. The first spindle may be a steering spindle or a suspension spindle.

A Retrofittable Air Suspension Brackets assembly comprises an air spring retained between an Upper Air Spring Mount and a Lower Air Spring Bracket. The Upper Air Spring Mount is attached to Upper Frame Brackets that are held in place by two U-Bolts, which also secure the Lower Air Spring Bracket and a Cradle Structure which limits movement of the vehicle frame member.

A suspension system for a rear axle of a vehicle provided with a frame equipped with at least two side members, the suspension system connecting the axle to said side members and comprising a left side and a right side, each comprising an axle-holder assembly, a bellows, a leaf spring, first and second bars, and a torsion bar interposed between said left and right sides. The aforementioned elements of the suspension system being arranged to provide a functional layout having reduced costs and overall dimensions.

A clamp group for a vehicle leaf spring suspension is disclosed. The clamp group secures a longitudinally disposed, leaf spring at separate and distinct locations, between which the leaf spring is undamped and spaced away from the top and bottom pads of the clamp group. Shear stress is reduced and the spring remains active throughout its length.

A suspension travel control system (1046) for a vehicle suspension is disclosed. The suspension travel control system includes a stop post (834) secured to the vehicle frame and a suspension travel control formation that includes a base (1042) and a body (1048). The stop post (834) is positioned in a space defined by the body (1048). The suspension travel control formation may be secured to the axle, the main support member or incorporated into the axle coupling assembly to provide a rebound and jounce stop as well as longitudinal redundancy in the event of the failure or loss of a longitudinal linkage.

An axle unit, includes a control arm and a clamping unit that surround a tube region, wherein a first side of the control arm faces away from the tube region, and a second side of the control arm forms a boundary face on the control-arm side of the tube region, wherein the clamping unit can be brought into supporting abutment with the first side of the control arm and has a boundary face on the clamp side, which face defines the tube region, wherein the clamping unit has a first and second clamping parts each having a wedge portion, wherein the wedge portions are formed in such a way that a displacement of the clamping parts substantially in parallel with a clamping axis toward one another results in a narrowing of the tube region transversely to the clamping axis.

A suspension travel control system for a vehicle suspension is disclosed. The suspension travel control system includes a stop post secured to the vehicle frame and a suspension travel control formation that includes a base and a body. The stop post is positioned in a space defined by the body. The suspension travel control formation may be secured to the axle, the main support member or incorporated into the axle coupling assembly to provide a rebound and jounce stop as well as longitudinal redundancy in the event of the failure or loss of a longitudinal linkage.

A leaf spring holder for connecting a leaf spring to an axle via a first fixing device and a second fixing device. Due to co-operation of the first fixing device with the second fixing device, a first mounting is spaced away from a second mounting to provide space for mounting the leaf spring between the first fixing device and the second fixing device. Co-operation of the first fixing device with the second fixing device enables deformation of a leaf spring section of the leaf spring between the first mounting and the second mounting. In order to increase the rigidity as a function of the spring deflection and/or to produce a rising-rate suspension, the leaf spring holder includes a stop surface for limiting deformation of the leaf spring section.

A lift axle suspension system incorporating a lift paddle is disclosed. The lift paddle comprising a first pad, a second pad and a rigid support arm securing the first pad and the second pad in fixed relation to one another. The first pad is attached to a lift spring, the second pad is secured to the bottom surface of the main support member/leaf spring. Actuation of the lift spring causes the axle to be lifted out of contact with the ground surface.