The invention discloses a downward turning type emergency evacuation door which comprises a door leaf, a connecting rod connecting the door leaf and the bottom of a vehicle body and a turning pedal rotationally connected with the middle of the inner side of the door leaf, the connecting rod rotates relative to the door leaf to drive the door leaf to be away from the vehicle body and be put down, and a first gear is arranged at the end, connected with the bottom of the door leaf, of the connecting rod. The door leaf is rotationally connected with the transmission shaft, the second gear, the first gear and the second gear are located at the two ends of the transmission shaft and meshed with the transmission shaft through the third gear and the fourth gear, the second gear and the turnover pedal are connected through the differential part, and the vertical transition state of the turnover pedal and the door leaf serves as an interface, and the second gear drives the turnover pedal to cross the interface through the differential part. And a damper is arranged between the door leaf and the turnover pedal. Multi-gear transmission enables a transmission structure to be hidden, the effective width of the evacuation ramp is guaranteed, gears and a transmission shaft are meshed in the whole process, reset meshing impact is avoided, the overturning pedal is driven by the dead weight, impact is relieved through a damper, and no impact in the whole process is achieved.

    本发明公开了一种下翻式紧急疏散门,包括门页、连接门页和车体底部的连杆、以及与门页里侧中部转动连接的翻转踏板,连杆相对门页转动,以驱动门页远离车体并下放,所述连杆和门页底部连接的一端设有第一齿轮,门页转动连接传动轴、第二齿轮,第一齿轮、第二齿轮位于传动轴两端,通过第三齿轮、第四齿轮和传动轴啮合,第二齿轮和翻转踏板之间通过差动件连接,以翻转踏板和门页垂直的过渡态为界面,第二齿轮通过差动件驱动翻转踏板越过界面,所述门页和翻转踏板之间设有与阻尼器。本发明中,多齿轮传动,使传动结构能够隐藏,保证疏散坡道有效宽度,齿轮、传动轴全程啮合,避免回复啮合冲击,翻转踏板自重驱动,由阻尼器减缓冲击,实现全程无冲击。


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    Title :

    Downward-turning emergency evacuation door


    Additional title:

    下翻式紧急疏散门


    Contributors:
    CHENG RONG (author) / JIA YUNTONG (author) / CAI ZHIXIANG (author) / FENG SISHUN (author) / SUN SIYUAN (author) / LI ZHONGMING (author)

    Publication date :

    2025-04-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES / E05F DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION , Vorrichtungen zum Bewegen der Flügel in die Offen- oder Schließstellung / E06B Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore , FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES



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