Motor car gear box box

The utility model provides a motor car gear box box, relates to rail vehicle transmission system, solve that present gearbox casing structure is unreasonable, the box oil circuit lubricated smooth, add that the oiling is inconvenient, gear box temperature rise unmanageable technical problem. The utility model discloses an upward box and lower box flask joint become 40 jiaos through big gear center line and water flat line, and upward the box outside is equipped with outer strengthening rib, and inside is equipped with oil trap and last interior strengthening rib, and external of nowel is equipped with down outer strengthening rib, and inside is equipped with down oil trap and down interior strengthening rib, the guard plate is equipped with to the external portion both sides of nowel, and the internal portion of nowel is provided with and leads oiled -plate method, support rib plate, oil baffle, leads oiled -plate method and oil baffle and falls into oil stirring oil bath and oil storage oil bath, oil stirrin