| 摘要 |
FIELD: construction.SUBSTANCE: perforator comprises a hammer-stone, comprising main and auxiliary strikers, at the same time the auxiliary striker is made with an inner cavity made of two parts. The cavity at the side of the main striker is connected with the outer surface of an air supply tube, which aligns colliding auxiliary striker and a rod. The auxiliary striker of diameter D has inner cavities with length Land L, besides, the cavity at the side of the main striker, with length Land diameter D<0.5D, is connected with the outer surface of the air supply tube, which aligns the colliding striker and the rod, and the cavity at the side of the rod is made expanded, besides L>2L, and the end of the air supply tube has at least four holes, axes of which are tangent to ledges of the expanding part of the auxiliary striker, and the central hole for water or air supply.EFFECT: reliable process of bounce and stable operation of a perforator.5 dwg |
