SEMITRAILER Russian patent published in 2006 - IPC B62D53/06 B60P3/06 

FIELD: transport engineering.

SUBSTANCE: invention relates to railless vehicles designed for carrying both light-weight small-size and heavy-weight large-size equipment and other loads. Proposed semitrailer contains frame mounted on wheels and furnished with ladder hinge-connected with frame with possibility of displacement in direction square to longitudinal axis of frame and spring-loaded relative to frame. Ladder is provided with lugs by means of which it is installed on shaft fitted in lugs secured on frame. Shaft, in its middle part, has nonround cross section, and round cross section at ends with diameter smaller than cross section of middle part. Holes in lugs on ladder are made with section mating to section of shaft in its middle part, and holes in lugs of frame are made with section mating to section of shaft at its ends. Lever with lug is rigidly secured on shaft. Ladder is spring-loaded relative to frame by means of compression spring hinge-resting on frame and lever.

EFFECT: enlarged sphere of application of semitrailer owing to increase of range of gauge.

11 cl, 12 dwg