A method is provided for determining whether or not ground contact loss is imminent for wheel of a vehicle, the vehicle including a vehicle body having a vertical extension in a vertical direction, the wheel being allowed to be subjected to a relative vertical displacement, in the vertical direction, in relation to the vehicle body, the vehicle further being such that a maximum value of a vertical displacement of the wheel relative to the vehicle body is limited to a relative vertical displacement limit; the method including determining an actual relative vertical displacement of the wheel relative to the vehicle body, determining a limit margin as the difference between the actual relative vertical displacement and the relative vertical position limit, and determining that ground contact loss is imminent for a wheel if the limit margin is within a predetermined vertical threshold range.

A vehicle suspension having a frame attachment portion attached to a saddle, first and second bolster springs mounted to spring mounts on an outboard side of the saddle and mounted on walls of a spring mount on an outboard side of an equalizing beam, and third and fourth bolster springs mounted to walls of a spring mount on an inboard side of the saddle and mounted to spring mounts on an inboard side of the equalizing beam, wherein upwardly extending flanges on the bottom of the first and second bolster sprints are mounted to each other using a common fastener, and wherein upwardly extending flanges on the bottom of the third and fourth bolster springs are mounted to each other with a common fastener.

The invention relates to a bogie axle (10) for a vehicle (12) with a preferred travelling direction (V). The bogie axle (10) comprises at least one axle rocker (14) which has, as output, two hubs (16) which are arranged spaced apart for the arrangement of a front wheel (18) and a rear wheel (18), and which has an eccentric axle rocker mounting (20) which is arranged between the hubs (16) for pivotable mounting of the axle rocker (14) on an axle carrier, wherein the axle rocker mounting (20) has, as input, an input shaft (22) which, in order to drive the front wheel (18) and the rear wheel (18), is coupled thereto via at least one transmission (24). A geometry of the at least one axle rocker (14) corresponds to formula (I): in which e denotes an eccentricity of a rotational axis (D) of the axle rocker mounting (20) in the preferred travelling direction (V) starting from a centre axis (M) which is arranged between the hubs (16). The invention further relates to a vehicle (12) with a bogie axle (10) of this type. $\begin{array}{cc}0.05\frac{e}{R\left(1-\frac{i_{BB}}{t}\right)+a}=\frac{\mathrm{FT}}{\mathrm{FG}}0.4& \left(I\right)\end{array}$

A walking beam suspension assembly may include, but is not limited to: a beam portion including: a central body portion; and at least one mounting bushing disposed through the beam portion; a linkage rotatably coupled to the frame portion via at least one linkage pivot bushing; and one or more elastically deformable members coupled to the linkage and configured to abut the central body portion.

A suspension element includes a housing, a first joint, and a second joint. The housing is configured to couple a tractive element assembly to a vehicle. The housing has a first end configured to engage a portion of the vehicle and a second end configured to interface with the tractive element assembly. The first joint includes a first actuator and a first resilient member. The first actuator is configured to facilitate linear extension and retraction of the suspension element. The second joint includes a second actuator and a second resilient member. The second actuator is configured to facilitate rotational movement of the suspension element. The first resilient member and the second resilient member are configured to support a static load of the vehicle.

A walking beam suspension assembly may include, but is not limited to: a beam portion including: a central body portion; and at least one mounting bushing disposed through the beam portion; a linkage rotatably coupled to the frame portion via at least one linkage pivot bushing; and one or more elastically deformable members coupled to the linkage and configured to abut the central body portion.