| 摘要 |
FIELD: machine building.SUBSTANCE: invention relates to pneumatic percussion machines. Pneumatic machine comprises a housing of the pneumatic cylinder with holes for air outlet into the atmosphere, wherein a hollow piston is located. Piston has an end cover and an end bottom, and its cavity is interconnected to the compressed air source through an axial through channel of air supply rod in piston bottom. In the cover and piston bottom through holes are aligned, which are equipped with means of opening or closing at the piston displacement for connecting shaft between the piston cavity and above-piston cavity and the piston underside part of the housing cavity of pneumatic cylinder. Holes for air outlet into the atmosphere are made in both opposite ends of the pneumatic cylinder housing. Each mean of opening or closing of through holes in the cover and through holes in the piston bottom comprises a guide rod arranged coaxially with the possibility of axial movement in the holes of the cover and the piston bottom equipped with a sealing element in the piston cavity.EFFECT: as a result impact effect is increased and reliability of pneumatic machine is improved.1 cl, 2 dwg |
