| 摘要 |
FIELD: transport.SUBSTANCE: stepping vehicle contains body, left and right propellers. Stepping propellers are made in the form main levers coaxially installed on body directed downwards and connected by links with crank via sliders located on the crank at intervals of 180°. On the free end of each of main levers, downward-backward support lever with footpad and front arm connected via connection rod with profiled lever. Profiled lever pin is made with rotor piston on both sides forming cavities with body, and crank is made with spool valve to close communication channel between cavities when corresponding slider is opposite to main lever pin half of circular path of slider movement. Each footpad is made in the form of soft roller installed on yoke pivotally fixed on the end of support lever. Each support lever is performed with overhead rear arm. Rear arm has friction block to brake soft roller in upper yoke position, and compression spring which thrusts by its other end against the yoke. Support lever is made with underneath stopper to create gap between friction block and soft roller in lower yoke position.EFFECT: obtaining reverse movement of stepping vehicle, obtaining noiseless and long-lasting operation of footpads.1 dwg |
