In-line tandem axle assembly

A system, comprising:

• a bar;
• and
• plural in-line tandem axle assemblies, each in-line tandem axle assembly comprising:
• a tandem wheel arm coupled to the bar;
• a pair of wheel connecting assemblies each comprising a hub and a spindle;
• a pair of mounts coupled respectively to the pair of wheel connecting assemblies;
• a pair of wheels coupled respectively to the pair of wheel connecting assemblies, the pair of wheels separated by the tandem wheel arm and in a same fore-and-aft position;
• and
• plural pairs of parallel links of equal length pivotably mounted to each mount of the pair of mounts and pivotably mounted to the tandem wheel arm, wherein each pair of parallel links forms a parallelogram defining four included angles, and wherein the included angles change as the wheels move relative to each other.

A method, comprising:

• towing an agricultural implement comprising plural in-line tandem axle assemblies, each of the plural in-line tandem axle assemblies comprising a pair of wheels coupled respectively to a pair of wheel connecting assemblies that are coupled to a pair of mounts, the pair of wheels separated by a tandem wheel arm and in a same fore-and-aft position;
• encountering a surface unevenness or obstacle with one of the wheels of the pair of wheels;
• and
• flexing the one of the wheels relative to the other wheel of the pair of wheels based on the encounter via movement of plural pairs of parallel links of equal length pivotably mounted to each mount of the pair of mounts and pivotably mounted to the tandem wheel arm, wherein each pair of parallel links forms a parallelogram defining four included angles, and wherein the included angles change as the wheels flex relative to each other.