Semitrailer device based on traveling system is adjustable

The utility model provides a semitrailer device based on traveling system is adjustable, include have the frame semitrailer device body of (1), the setting is in the rear end of the lower extreme terminal surface portion of frame (1) and have elastic elastic steel plate (5) of leaf spring, the setting is at the torsion rubber axle (2) of elastic steel plate's (5) terminal surface portion, set up to turning arm (9) with elastic steel plate (5) hookup, set up to wheel (11) with turning arm (9) hookup, torsion rubber axle (2) sets up to including central siphon (21), dabber (22) and rubber torsion stick (23) and dabber (22) set up in the logical cavity of central siphon (21), be provided with rubber torsion stick (23) and elastic steel plate (5) set up to linking with dabber (22) between the outside face of the inner wall of the logical cavity of central siphon (21) and dabber (22), the vibrations impact force that wheel (11) produced, absorbed by elastic steel plate (5) through turning arm (9), elastic steel pl