| 摘要 |
A trailer frame for carrying tall, heavy loads includes a pair of parallel frame members of generally Z-shaped cross-sectional configuration joined together by cross-bracing to form a rigid structural frame in which the bottom flanges of the frame members extend inwardly to provide means for supporting a load inside the trailer frame. A pair of suspension springs and a tongue adapted for connection to a towing vehicle are secured to portions of the frame members located above the plane of the load-supporting flanges so as to lower the c.g. of the load. The front portion of the tongue has a step-neck for positioning a coupler at towing height above the plane of the load-supporting flanges. The tongue together with suspension spring brackets and fender braces are rigidly affixed to the frame members in a manner which increases the torsional resistance of the trailer frame.
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