| 摘要 |
<p>The railway bridge drain composed of a flat full plate (1), which has a round opening (2) in its centre, and of a drainpipe (9), which is situated in the round opening (2), of the plate (1) to which it is vertically connected and inside the drainpipe (9) is a nut (3) in the centre. A flat full collar (4) in the centre of the top part of the plate (1) contains a square opening (5) and on the plate (1) is a drainage cover (6), set-up from side walls and top wall, of which the drainage openings (11) which are inside the drain cover (6), make from 20 to 30 % of the total surface of the drainage cover (6). The plate (1), collar (4) and drainage cover (6) are connected together by a connecting screw (10), which is connected to the nut (3) in the drainpipe (9). A drain frame (7), which is made-up of sidewalls and top wall, and has drainage openings (11), can be placed around the drain cover (6).</p> |
