Trailer frame

Abstract

A bolt-together trailer frame that can have either a torsion axle or a sprung axle attached thereto without modification of the trailer frame side members. The side frame of the trailer includes at least one axle cut-out with an axle cut-out reinforcement plate attached about the cut-out. A torsion axle is welded to the axle cut-out reinforcement plates. A sprung axle is attached to the trailer frame with a plurality of spring hangers to which leaf springs are connected. The axle of the sprung axle is then attached to the spring hangers.

1 . A bolt-together trailer frame comprising: 
 a plurality of longitudinally spaced side frame members fastened together by a plurality of threaded fasteners forming a first side;    a plurality of longitudinally spaced side frame members fastened together by a plurality of threaded fasteners forming a second side;    a front cross member fastened together to the sides by a plurality of threaded fasteners;    a rear cross member fastened together to the sides by a plurality of threaded fasteners;    characterized in that at least one side frame member of each side is an axle frame member configured to be connected to either a torsion axle or a sprung axle.    
   
   
       2 . A bolt-together trailer frame according to  claim 1 , further comprising: 
 a laterally extending flange about at least a portion of the axle cut-out.    
   
   
       3 . The trailer frame according to  claim 2 , wherein the axle-cut out includes a top portion distal a lower edge of the axle frame member, the laterally extending flange being positioned about the top portion.  
   
   
       4 . An improved trailer frame having: 
 a pair of sides, each side comprising a plurality of longitudinally spaced side frame members fastened together by a plurality of threaded fasteners, and a plurality of cross members, the sides and the cross members being fastened together by a plurality of threaded fasteners forming the trailer frame;    wherein the improvement comprises, at least one side member of each side forming an axle frame member configured to connect one of a torsion axle and a sprung axle, each axle frame member having at least one axle cut-out therein; and laterally extending about at least a portion of the axle cut-out.    
   
   
       5 . The trailer frame according to  claim 4 , wherein the axle-cut out includes a top portion distal a lower edge of the axle frame member, the laterally extending flange being positioned about the top portion.