A system for moving a flip axle assembly relative to a trailer, includes a trailer pivotally connected to a flip axle assembly, where a rotation assembly moves the flip axle assembly between a ground-engaging position and a stowed position. The rotation assembly includes a first linkage connected to the flip axle assembly, and a second linkage pivotally connected to the first linkage, forming a second pivot connection. A hinge is connected to the trailer, with the hinge being pivotally connected to the second linkage forming a third pivot connection. A rotation mechanism is operably connected to the rotation assembly for moving the flip axle assembly between the ground-engaging position and the stowed position.

A suspension assembly and method of use is provided. The suspension is for an axle on a trailer or other vehicle. The suspension assembly has a cross support member connected with or integrally formed with a hanger bracket at the first end of the cross support member. A trailing beam is connected to the hanger bracket. The trailing beam and a mount are coupled with a load air bag and a lift air bag, with the bags located on each respective side of a pivot axis for the trailing beam. This establishes a teeter-totter configuration of the suspension assembly allowing independent wheel travel side-to-side of the suspension assembly.

A work vehicle includes a chassis, an axle assembly, an actuator, a parking brake, and a controller. The axle assembly is coupled to the chassis. The actuator is coupled to the chassis and the axle assembly. The actuator is configured to transition the axle assembly between a raised position and a lowered position. The controller includes a processor and a memory. The controller is configured to generate signals to determine a vehicle state based on data representing at least one of a vehicle load, a vehicle location, and a vehicle operating condition; and operate the actuator to transition the axle assembly between the raised position and the lowered position based on the vehicle state.

The obstacle-crossing device for a motorized vehicle having a chassis connected to three wheels on each lateral side of the chassis and a motor to rotate the wheels. There is a mechanism having two arms articulated in pairs about a common pivot axis. The device includes an arm articulated to the chassis on a longitudinal member via a pivot connection. The end of the arm that extends beyond the pivot connection and opposite the motor cooperates with a slide movable on the longitudinal member. A front wheel has a first position in alignment with the other two wheels and a second position which is lowered with respect to the alignment of the other two wheels. The longitudinal member has a fixed wall, and at least one spring. The arm is dimensioned to push back the slide while constraining the spring when the front wheel is in its first position.

A suspension assembly and method of use is provided. The suspension is for an axle on a trailer or other vehicle. The suspension assembly has a cross support member connected with or integrally formed with a hanger bracket at the first end of the cross support member. A trailing beam is connected to the hanger bracket. The trailing beam and a mount are coupled with a load air bag and a lift air bag, with the bags located on each respective side of a pivot axis for the trailing beam. This establishes a teeter-totter configuration of the suspension assembly allowing independent wheel travel side-to-side of the suspension assembly.

An automatic axle lift system including a first sensor circuit configured to detect the presence of a brake signal and a turn signal and, in response, to generate a lift command signal that lifts an axle or a set of axles of a vehicle. The automatic axle lift system also includes a second sensor circuit that detects the lift command signal and, in response, generates a caution light signal. The automatic axle lift system includes a third sensor circuit that detects the lift command signal and, in response, latches the second sensor circuit to maintain the lift command signal.