| 摘要 |
FIELD: construction.SUBSTANCE: beater blade includes a board (1) and hard-alloy inserts (2). The inserts (2) are fixed on the board (1) and contain a head part (3), the cross section of which has a convex shape and a tail part (4), which contacts with the lower part of the board (1). An intermediate part (5) is placed between the head and tail parts. The intermediate part (5) of at least one of the hard-alloy inserts (2) is formed by surfaces of a concave shape, smoothly coupling the head (3) and tail (4) parts of the insert (2). The width of the cross section of the insert (2) increases from its head part (3) to the tail part (4).EFFECT: possibility to compact ballast in a sleeper spacing and increased resistance of the blade to damage.10 cl, 6 dwg |
