Track wheeled trailer

摘要

A flat bed off-road trailer has a rigid planar frame supporting the bed. The frame has transverse members at the forward and rear edges of the bed, and has longitudinal members at lateral edges of the bed. A rigid undercarriage fixed to the trailer's axle is hinged to the frame via journal connections between forward outboard zones of the frame and forward outboard zones of the undercarriage. The trailer has springs for absorbing road shocks, the springs being located between rear outboard zones of the frame and rear outboard zones of the undercarriage. The trailer has a tiltable tractive subassembly which comprises walking beams journalled to the axle, wheels mounted at either end of the walking beams, a band wrapped around the wheels and structure to limit tilting of the subassembly.