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Percussive energy transfer in pneumatic top hammer rock drills
Luleå tekniska universitet.
1991 (English)In: International Journal of Mining, Reclamation and Environment, ISSN 1748-0930, E-ISSN 1748-0949, Vol. 5, no 1, p. 33-38Article in journal (Refereed) Published
Abstract [en]

A mathematical model of pneumatic roll drills is introduced. This model takes into account the local deformation of impact ends of piston and shank adapter. For this model, there is a good agreement between theoretical and experimental results. Two dimensionless parameters related to the mass of piston, the local deformation of impact ends, characteristic impedance of rod, and force-penetration characteristic at bit-rock interface, are introduced. The analysis indicates that the checking of these dimensionless parameters and letting them be in certain ranges are helpful for the design of pneumatic rock drills to achieve high efficiency of energy transfer.

Place, publisher, year, edition, pages
1991. Vol. 5, no 1, p. 33-38
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-9863DOI: 10.1080/09208119108944284Scopus ID: 2-s2.0-0025723353Local ID: 890a4c80-ff12-11dc-8b65-000ea68e967bOAI: oai:DiVA.org:ltu-9863DiVA, id: diva2:982801
Note

Godkänd; 1991; 20080331 (cira)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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