DETERMINATION OF MAIN PARAMETERS OF PNEUMATIC HAMMER FOR DRIVING INTO SOIL PIPES OF LARGE DIAMETER
A brief overview of the equipment used to drive in steel elements into groundis provided. The basic parameters of the pneumatic hammer employed for plugging of pipes with a diameter greater than 1 220 mm and an open end into the ground are justified. The paper describes the design and operation aspects of pneumatic hammers with variable structure of shock power with a system of air distribution resilient annular valve. On the basis of the analysis of long-term operation of the equipment for trenchless laying of underground communications and for hammering of vertical pipes the forecast about possible emergence of difficulties at creation of the large-sized superheavy pneumatic device of shock action is made. The principles of construction, as well as possible ways of solving problems associated with the creation of a pneumatic hammer with a shock mass greater than 1 000 kg.