Saddle with low load surface for connection of tractor and semi-trailed transport vehicle

The utility model discloses a saddle with low load surface for connection of a tractor and a semi-trailed transport vehicle; the saddle with low load surface consists of a saddle, a tractor girder and a connecting assembly, wherein the saddle is connected with the connecting assembly with the using of a bolt; the connecting assembly is connected with the internal side of the tractor girder in a bolting or riveting manner; the purpose of lowering the load surface of the saddle is achieved by changing the connecting position and manner of the traditional saddle, the design of the saddle with low load surface is realized, and the assembling structure is simplified, so that the gravity centre of semi-trailers is lowered, the self-weight is reduced and the traffic safety and the transportation capability for goods are improved.