Support structure for connecting at least one support wheel assembly to a frame member of a track system and track system having the same

A support structure for connecting at least one support wheel assembly to a frame of a track system having a longitudinal center plane, the support structure comprising:

• at least one connecting member being adapted to connect the support structure to the frame;
• a shaft having a first portion and a second portion, the shaft being received in the at least one connecting member and having a longitudinal axis extending parallel to the longitudinal center plane;
• at least one axle adapted for supporting the at least one support wheel assembly, the at least one axle being transversally connected to the shaft, and the at least one axle extending outwardly from the at least one connecting member;
• at least one resilient member at least partially received in the at least one connecting member, the at least one resilient member defining an aperture, one of the first and second portions of the shaft being received in the aperture, and the at least one resilient member having an inner portion and an outer portion;
• the inner portion of the at least one resilient member being fixedly connected to the one of the first and second portions of the shaft, and the outer portion of the at least one resilient member being fixedly connected to the at least one connecting member, the shaft being rotatable about the longitudinal axis upon resilient deformation of the at least one resilient member, and the at least one axle being pivotable about the longitudinal axis together with the shaft, and
• the shaft having an initial position, the at least one resilient member biasing the shaft toward the initial position upon rotation of the shaft about the longitudinal axis.