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

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THEORETICAL ANALYSIS OF A PNEUMATIC HAMMER IMPACT MECHANISM OF THE «BODY-DRUMMER»

Dobroborskiy B.S. 1
1 Saint-Petersburg State University of Architecture and Civil Engineering
Classic principles of pneumatic percussion machines represent mantle with him spool mechanism and the piston-drummer, reciprocating movement relative to the housing. Main structural disadvantage of these machines is that the working tool is attached to their body. The motions of the piston-impactor and body are always in opposition due to forces acting on them air pressure. For this reason, numerous studies and calculations of pneumatic machines have not led to a significant reduction of the problem. However, the analysis conducted by the author of such machines has shown that there is no need to fix a working tool in the machine body, since it is not directly involved in the impact mechanism. Suggested by the author of a new system of pneumatic percussion machines “body-drummer” involves the use of impact as a source machine body. This allows for full transfer impact energy to the working tool when it is pressed against the blasted material. The submissions shows the main theoretical dependences of pneumatic hammer impact mechanism of the “body-drummer”.