The suspension system for a trailer is disclosed. The suspension system includes a torsion axle and an air spring operating to accommodate a wide range of a load weight applied to the trailer without any change in ride comfort. The air spring can be adjusted for its pressure inside to cover a heavy load weight, while the torsion axle can have relatively softer spring materials therein to cover a light (and zero) load weight. The air spring and the torsion axle are arranged in series to provide adequate suspension based on the load weight.

A transportable fold-out structure includes a support frame. First and second primary platforms are pivotally supported by the support frame and each is disposed in an upright position wherein the platform extends upwardly. Two wall assemblies are disposed opposite each other. Each wall assembly includes a plurality of wall segments joined together. Each wall segment is pivotally joined to the support frame or one of the primary platforms. Each wall assembly is movable from a first position wherein the wall assembly is lying above the first and second primary platforms to a second position wherein the two wall assemblies face each other. First and second extensions are configured to be selectively positionable wherein a first portion of the extension is connected to the support frame and a second portion of the extension is remote from the corresponding first portion and extends laterally from the support frame.

A retractable wheel assembly includes arm assemblies, wheels, retraction arms, guide blocks, and a threaded shaft. The arm assemblies are hingedly attached to a lower frame of a utility vehicle. Each arm assembly comprises a first arm, a second arm, and a third arm hingedly linked therebetween. Each wheel is connected to the third arm of each arm assembly. The retraction arm is connected to the second arm, and a threaded shaft. The threaded shaft is configured to be actuated rearwardly where the retraction arm is rearwardly pulled helped by a guide block to convert the longitudinal movement to vertical movement, causing the second arm to fold the arm assembly inwardly when the trailer is positioned at rest. Then the threaded shaft is configured to be actuated forwardly where the retraction arm is pushed forward and helped by a guide block to convert the longitudinal movement to vertical movement causing the second arm to unfold the arm assembly outwardly to deploy the wheels for motion.

An agricultural baler includes a hydraulic circuit with a first hydraulic cylinder connected between the first end of the first axle and the chassis, and a second hydraulic cylinder connected between the second end of the first axle and the chassis. At least one sensor senses a position of the chassis relative to the first axle. An electrical processing circuit is coupled with the hydraulic circuit and the at least one sensor. The electrical processing circuit controls operation of the hydraulic circuit, and includes an operator input device for selectively: 1) raising the chassis of the baler relative to the first axle, 2) lowering the chassis of the baler relative to the first axle, or 3) automatically returning the chassis of the baler to a predetermined operating height relative to the first axle, dependent upon an output signal from the at least one sensor.

A vehicle (8) comprising a vehicle body (81), a ground-engaging wheel (7), a suspension arm (1) by means of which the wheel (7) is mounted on the vehicle body (81), an electric motor/generator (2) with a mechanical driveline by means of which the motor/generator (2) is connected to the wheel (7) such that rotation of the wheel (7) about a wheel axis (B) may be driven by the motor (2) or rotation of the wheel may drive the generator (2), wherein the motor/generator (2) is mounted on the suspension arm (1).

A vehicle stabilization system including a frame; a wheel; a control arm connected to the frame and the wheel; a fluid spring connected to the frame and the control arm; a stabilizer connected to the frame and operable between a retracted and extended position; a reservoir; and a fluid manifold connected to the fluid spring and the chamber, fluidly coupling the spring interior and stabilizer chamber to the reservoir interior. A vehicle stabilization method including maintaining an orientation of the vehicle frame, coupling the frame to a support surface using a stabilizer by introducing a fluid to a chamber of the stabilizer, and retracting a wheel by reducing a quantity of fluid within a fluid spring coupling the wheel to the frame.

A clamping system for mating an I-Beam frame to an undercarriage is disclosed. The clamping system utilizes clamping brackets to secure the undercarriage to the trailer frame. The undercarriage has adapter sides oriented perpendicular to the undercarriage adapter bottom. The clamping brackets have two portions oriented perpendicular to each other. Holes are located in the clamping brackets to receive bolts or screws. The trailer frame is aligned onto the undercarriage and positioned such that proper tongue weight is applied. The clamping brackets are rigidly installed on the clamping bracket sides. Clamping screws are installed into the clamping brackets and torqued to a value such that a compressive force is applied between the bottom of the I-Beam and the undercarriage adapter bottom. The compressive force applied prevents unwanted relative motion between the I-Beam frame and the undercarriage during use.

An air suspension for a vehicle includes a mounting bracket configured to couple to the vehicle. A pivot bracket includes a top and a bottom. The top is pivotably coupled to a frontward portion of the mounting bracket. An air shock absorber includes a first end and a second end. The first end is pivotably coupled to the bottom of the pivot bracket and the second end is pivotably coupled to a rearward portion of the mounting bracket. An axle arm includes a first portion and a second portion. The first portion of the axle arm is fixedly coupled to the frontward portion of the mounting bracket. A spindle is fixedly coupled to the second portion of the axle arm and is configured to be coupled to a hub assembly of a wheel.