Tank car filling device

The invention relates to the train tank car technology, in particular to a tank car filling device, comprising a filling sleeve set, a shunting cap and an elastic material layer, wherein the filling sleeve set comprises an outer-layer sleeve, an intermediate sleeve set and an inner-layer sleeve from outside to inside, the outer-layer sleeve can move up and down, the intermediate sleeve set comprises a plurality of sleeves capable of moving up and down and sleeving mutually, the center position of the inner-layer sleeve is provided with a stay cord, the tail end of the stay cord is provided with the shunting cap, the shunting cap comprises a bottom and a side wall arranged around the bottom, the elastic material layer is arranged between the bottom of the side wall, a plurality of shuntingholes are formed in the side wall, the shunting holes extend downwards to the top end of the elastic material layer, annular grooves sinking downwards are formed in the bottom of the shunting cap, theannular groove and the el