PURPOSE: To obtain an automatic mounting and demounting device for a hood which can follow even if the vertical height difference between the vehicles is large, by engaging and disengaging a U-shaped metal fitting on an extensible/contractible device and a pin on the hood side by turning the extensible/contractible device for the hood by a turning means, as for the hood which is mounted and demounted at the connection part of the vehicles.

CONSTITUTION: A hood 3 is held at the end of one vehicle 1 among trains by an extensible/contractible device 5. A connecting mechanism is arranged in a demountable manner between the end 4 of the hood 3 and the hood installation part of the opposed vehicle 2. Further, the hood 3 and the extensible/contractible device 5 are held in free engagement through an engagement/disengagement means. mechanism is retreated, separated from the hood 3, and the mechanism The hood 3 is mounted and demounted through the extension and contraction of the extensible/contractible device 5. In this case, the engagement/disengagement means is constituted of a pin 6 which is projectingly installed from the hood side, U-shaped metal fitting 7 arranged on the extensible/contractible device 5 side, and a turning means 8 for turning the extensible/ contractible device 7 between an upwardly directed attitude and a horizontal attitude. A pin 6 and the U-shaped metal fitting 7 are engaged and disengaged by a turning means 8.