RAINPROOF DEVICE SUITABLE FOR SIDE DOOR OF RAILROAD CAR

A rainproof device suitable for a side door of a railroad car, comprising: a sealing rubber strip 1 (5), a sealing rubber strip 2 (3), a bidirectional flow limiting device, a rain blocking strip (6), an expandable and retractable air bag (7), and a gas connection tube. The sealing rubber strip 1 (5) is provided at the bottom of the side door panel (2). The sealing rubber strip 2 (3) is provided around a side door frame. The bidirectional flow limiting device comprises a flow limiting device A (8) and a flow limiting device B (4). The flow limiting device A (8) comprises a connector 1 (81), a flat spring 1 (82), a pushing pin (84), and an elastic connector (85). The flow limiting device B (4) comprises a connector 2 (41) and a flat spring 2 (42). The expandable and retractable air bag (7) is provided within a semi-sealed cavity of the rain blocking strip (6). When the side door panel (2) is tightly closed, the flow limiting device A (8) and flow limiting device (B) are inserted into each other to form a sealed