| 摘要 |
FIELD: machine building.SUBSTANCE: invention relates to automotive industry. Retractable boarding platform comprises sliding panel, support rollers, panel extension power drive, cleaning element from sticking. Sliding panel is made of links, which in working position allows to ensure non-bending rigid state. With retraction on said links upper surface layer of flexible sheet material with non-slippery surface is laid, fixed by front edge with first link. Sliding panel in transport position is folded so that links are laid in volute, and flexible sheet material is folded into roll. Volute and roll drive rollers are kinematically connected with panel extension power drive made of two parts. One of parts is located on floor in tram car, and other is under car floor about entrance doors opening in additionally formed compartment. Additional compartment lower part is closed by detachable cover.EFFECT: higher reliability of operation and reduced weight of boarding platform.3 cl, 5 dwg |
