THE BASICS OF CREATING A PNEUMATIC HAMMER WITH AN INCREASED WEIGHT OF THE IMPACT PART FOR DRIVING LONG PIPES OF LARGE DIAMETER INTO THE GROUND
V. V. Chervov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Striker, body, compressed air, impact frequency, elastic valve, weight
Abstract
A brief overview of the equipment used for driving steel elements into the ground is made. The main parameters of a pneumatic hammer designed for driving pipes with a diameter greater than 1220 mm into the ground with an open end are substantiated. The device and features of operation of pneumatic hammers with a variable structure of impact power, which have an elastic ring valve in the air distribution system, are described. Based on the analysis of long-term operation of equipment for trenchless laying of underground facilities and driving vertical pipes, a forecast is made about possible difficulties in creating a large-sized super-heavy pneumatic shock device. The design principles are proposed, as well as possible ways to solve the problems associated with creating a pneumatic hammer with the impact part weight greater than 1000 kg.
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