PNEUMATIC IMPACT ACTION MACHINE Russian patent published in 2005 - IPC

FIELD: mining industry, construction, mechanical engineering, etc.

SUBSTANCE: machine includes barrel made of impact and static sections, mounted telescopically one in another with possible axial displacement, excluding axial impaction thereof to each other, while both sections are placed in resilient body, made of elastomer, and body has inner bead formed by coaxial recesses of greater and lesser diameters, while impact section is placed in recess of lesser diameter on the outer side of body, and static section is placed in body recess of greater diameter and has outer bead for interaction with appropriate inner bead of body, and also has longitudinal grooves on outer surface, made along forming lines, portion of which by radial drain ports near inner end of barrel are connected to straight drive chamber, and second part connected to back flow chamber by drain ports near outer end of barrel, below-valve and above-valve saddles, respectively covers for barrel and valve box, are made in form of straight and reversed cones, and valve is made of elastic polymer in form of two-tab construction, tabs of which consist of two hollow truncated cones, rigidly interconnected by bases, with forming of chamber, conical on both sides, and outer conical surfaces of upper and lower tabs match conical surfaces of respectively above-valve and below-valve saddles and interact with them in turns, impact mechanism is made of two masses serially placed in barrel - striker and piston, having spherical ends for interaction with forming of intermediate chamber between them, working implement holder lid, fixed on outer end of body, made of elastomer, has a recess in form of inner cone inside ring-shaped edge for interaction with appropriate outer cone on body and pass aperture in base near center, diameter of which matches diameter of bead on replaceable implement, holder of working implement is made of shockproof elastomer in form of cut bushing, having a bead outside for interaction with bottom inside lid and a cylindrical portion, diameter of which matches diameter of pass valve in lid, in which it is mounted, and inner holder diameter matches diameter of neck of replaceable working implement.

EFFECT: higher efficiency, lower vibration, higher effectiveness.

7 dwg