Pneumatic trailing beam suspension with a bolted axle connection, thus without welding the axle to the trailing arm-beams

Abstract

A pneumatic trailing beam suspension invention has an axle provided with a left and right welded-on landing pads. Each landing pad has a spaced pair of upper semi-circular axle-seat races that cup about a quarter of the axle's sidewall, terminate in a lower box foot. The left and trailing arm-beams are formed with recessed seat pockets for the landing pads' box feet to nest/dock/land in. The axle is otherwise clamped to the left and trailing arm-beams by U-bolts, or straight bolts and a mounting cap. The land pads and seat pockets cooperate to resist axle twisting by brake torque loading. There is additionally an upright fixed down pin extending upright from the center of the recessed seat pocket, and a cooperating dowel hole in the foot of the landing pad which also cooperate to resist axle twisting by brake torque loading.