Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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ENSURING OPTIMUM FEED FORCE PORTABLE PNEUMATIC PERFORATORS THOUGH THE MECHANISM OF ROTATION OF THE DRIL ROD

Dobroborskiy B.S. 1 Ovcharov A.A. 1
1 Saint-Petersburg State University of Architecture and Civil Engineering
Research is devoted to the problem of inconsistencies designs modern portable pneumatic perforators requirements of optimal conditions hole drilling. Inconsistency problem is that for drilling portable pneumatic perforators with a maximum speed necessary to force feed about 1400 N that existing designs perforators not created. The purpose was to identify opportunities for energy return stroke-drummer of perforator to create a feed force, and the design feeder. The theoretical analysis of perforator showed that the energy expended on feed force is only 0.3% with respect to the energy expended on the rotation of the drill rod. It is possible to develop a built-in feeder perforator, the movement of which is produced by a worm gear. In the proposed design as used rotary screw bushing of perforator, on the outer surface of which is applied the appropriate thread. The paper describes the design of perforator with the feeder.