Patent ID: 8256795

Claim:
An off-road truck suspended with a rubber spring device for suspension between an equalizer bar and an axle, the rubber spring device comprising: a laminated structure formed by alternately laminating a plurality of layers of rubber layers and hard plates with rigidity in parallel to each other; a pair of rigid end members respectively bonded to the rubber layers disposed at both ends of the laminated structure; and connecting means for regulating widening of an interval between the rigid end members, wherein in plan view, each of the hard plates in a direction parallel to a longitudinal direction of the equalizer bar is formed to have a linear dimension that is shorter than a linear dimension of each of the hard plates in a direction parallel to an axle direction of the off-road truck, and in plan view, a central line that divides the laminated structure in two disposed in parallel to the axle direction passes through the hard plates.