Abstract: Provided are a railroad vehicle that makes it possible to maintain the air tightness of a door and a plug door for a railroad vehicle. A second rail is provided parallel to a first rail in the longitudinal direction of a vehicle body above the leading edge side (door side) of a plug rail. The second rail supports the leading edge side of the plug rail. As a result, both edges of the plug rail are supported by the first rail and the second rail. Dangling of the leading edge side of the plug rail is thus prevented even when the plug distance (the distance that the door moves in the vehicle body width direction) is long. In this way, it is possible to block the doorway without leaving a gap using the door and to maintain the air tightness of the door.

Abstract: There is provided a vehicle which can stably load or unload a long heavy load and lower a height of a working space necessary for loading or unloading the weight body. The loading/unloading apparatus suspends and maintains a load in a working beam installed between a pair of booms and rotates the pair of booms toward the left or right direction of a vehicle body, such that the load is unloaded from the vehicle body in a construction field or loaded from the construction field onto the vehicle body. Thus, the height of the working space necessary when the load is loaded or unloaded can be reduced as compared with a crane structure for loading and unloading the load by the fluctuation of a boom.