Laaeffrs型双层运输汽车专用车的活动渡板设计

Design of foldable drive-over flap for Laaeffrs double-decker auto transport wagon

介绍了一种用于Laaeffrs型双层运输汽车专用车的上层底架端部活动渡板(以下简称上层活动渡板)的研发过程。以使用者的功能需求、空间要求、操作要求为导向和设计目标,在满足欧盟相关法律法规和铁路机车车辆相关标准的前提下进行设计和试验。上层活动渡板创新性地采用两段式板梁焊接结构并与两侧的锁闭装置配合,以适用于Laaeffrs型双层运输汽车专用车的3种工况,同时充分利用空间,为汽车创造更大的装载区域。为保证上层活动渡板的可靠性和耐用性,结合使用需求和应用场景,进行有限元分析。计算证明,上层活动渡板在各种工况下的静强度和疲劳强度均满足标准要求。通过试制试验进一步表明上层活动渡板的生产可行性和使用安全性。

This article introduces the design process of an upper underframe end foldable drive-over flap(hereinafter referred to as “upper foldable drive-over flap”) which is used for Laaeffrs double-decker auto transport wagon.Based on the functional,space and operation requirements of users,a series of design and test are carried out on the premise of meeting the relevant laws and regulations of EU and the standards of railway rolling stock.The upper foldable drive-over flap innovatively adopts a two-stage plate beam welding structure and cooperates with the locking devices on both sides,so that it is suitable for three working conditions of Laaeffrs double-decker auto transport wagon.At the same time,it makes full use of space to create a larger loading area for the cars.In order to ensure reliability and durability of the upper foldable drive-over flap,the finite-element analysis is carried out based on the utilization requirements and application scenarios.The calculation shows that both static and fatigue strength of the upper foldable drive-over flap under various working conditions meet the related requirements.Besides,the trials and tests show that the upper foldable drive-over flap is feasible in production and safe in use.