A sealing system for an opening in a wall surface includes a wall surface with an opening, having a circumferential inner surface, a leaf adapted to the geometry of the opening to be inserted into the opening and closed, wherein a circumferential outer surface of the leaf is arranged facing the inner surface of the opening in the closed state.

A sealing device is formed by a first sealing element arranged in the inner surface and moved towards and away from the outer surface.

The system includes, a drive element that drives the first sealing element in the opening plane towards the outer surface of the leaf into a sealing position and produces a force in the direction of the outer surface such that when the opening is in the closed state, the first sealing element comes into sealing contact with the outer surface when acted upon by force.

According to some embodiments, a discharge door locking system for a railcar discharge door comprises a lock piston configured to move between a first position (not engaged with an operating beam coupled to a discharge door) and a second position (engaged). The locking system comprises a first and second input. Activation of the first input moves the lock piston to the first position, and activation of the second input moves the lock piston to the second position. The first input of the locking system is coupled to a first input of an operating cylinder coupled to the operating beam. The first input of the operating cylinder is configured to move the discharge door to the open position. The second input of the locking system is coupled to a second input of the operating cylinder. The second input is configured to move the discharge door to the closed position.

A movable side wall and opening/closing mechanism for railroad boxcars, comprising a side wall assembly (1), an end-portion opening/closing mechanism (2), a hinged rod assembly (3), a lateral door central clamping device (4), a upper transmission shaft assembly (5), a lower transmission shaft assembly (6), a upper track assembly (7) and a lower track assembly (8); upon loading/unloading cargo, the movable side wall can be opened further, so as to allow multiple forklifts of any tonnage on the ground to load/unload cargo to/from any positions of a carriage; the hinged rod assembly (3) and the central clamping device (4) are provided to keep the movable side wall reliably closed in order to ensure security and self-locking during transportation.

An operating mechanism for plug-type rail car doors includes first and second links connected to rotatable first and second support bars. The links include respective elongated slots partially overlapping with one another, wherein each slot receives a respective cam. The cams are rotatable together about a rotational axis which is eccentrically arranged relative to both cams. An actuating lever is connected to the cams to enable an operator to rotate the cams about the rotational axis. The actuating lever is movable such that the first and second links are retracted relative to one another to simultaneously rotate the first and second support bars, and such that the first and second links are extended relative to one another to simultaneously counter-rotate the first and second support bars. A gear train may be provided between the actuating lever and the cams to reduce the necessary manual operating torque.

A compartment door for a vehicle has a bearing rod slide block with a rod sliding block arranged on a bearing bar. The bearing rod is connected by a sliding pair, and the compartment door is connected with the bearing sliding block through a plugging and pulling movement of the main body. The plugging and pulling movement of the main body includes a swing rod, a connecting rod and a roller, wherein an upper end of the connecting rod and compartment door are connected to a point B by a rotation pair, and a lower end of the connecting rod and the bearing rod slide block are connected to point D by a sliding pair. The upper end of the swing rod and bearing rod slide block are connected to point A by the rotation pair, and B, C, D are located on a same straight line.

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.

A simple, convenient and light weight compartment door is provided.

A sealing system for an opening in a wall surface includes a wall surface with an opening, having a circumferential inner surface, a leaf adapted to the geometry of the opening to be inserted into the opening and closed, wherein a circumferential outer surface of the leaf is arranged facing the inner surface of the opening in the closed state. A sealing device is formed by a first sealing element arranged in the inner surface and moved towards and away from the outer surface. The system includes a drive element that drives the first sealing element in the opening plane towards the outer surface of the leaf into a sealing position and produces a force in the direction of the outer surface such that when the opening is in the closed state, the first sealing element comes into sealing contact with the outer surface when acted upon by force.

A door system for a vehicle, such as a rail vehicle, includes a door leaf movable from a closed state to an open state and vice versa. The door system includes a longitudinal beam extending along a longitudinal vehicle axis (X) and having a longitudinal guide in which the door leaf is movably guided; a transverse beam arranged firmly on the vehicle, which extends along a transverse vehicle axis (Y) substantially perpendicularly to the longitudinal beam, wherein the longitudinal beam is movably guided via a guiding device in a transverse guide of the transverse beam; and a locking device configured for blocking a relative displacement between the longitudinal and transverse beams in a locking position and for enabling a displacement of the longitudinal beam relative to the transverse beam in an open position. A door system of this type is more cost-effective and meets higher security standards during locking.