It has curved legs in the shape of“S”,protuberant tooth-like board,footpad(a frame with four feet under legs) and its circle is supported by back and uprights behind.

Researching about plane swerve flexible trap of transporter's swerving middle crossbeam and swerving middle leg open question in design on practical application,through improving design on them ensure rapidity and accuracy in assemble process and achieve design requirements of drawing,offering reference value for design on sameness transporter.