| 摘要 |
FIELD: transport engineering. SUBSTANCE: invention relates to vehicles bodies on which door wing control mechanisms are installed. It can be used in trolleybuses, street car and buses. Mechanism providing displacement of door wing relative to skeleton contains four four-link mechanisms and four crossmembers in addition, two synchronizing tie-rods, synchronizing torsion bar and two U- shaped mounting brackets, pair of rockers and four spring-loaded self-aligning rollers. Proposed design provides optimum trajectory of door wing movement with minimum clearance along side and reliable fixing of wing in closed position owing to interaction of four-link mechanisms and specific geometric relationships. EFFECT: improved reliability of fixing door wings in closed position without use of special locks and possibility of unlocking wings in emergency. 3 cl, 10 dwg |
