Izvorni znanstveni članak
https://doi.org/10.17794/rgn.2015.1.5
Analysis of Constructional and Operational Parameters of Chain Saw
Tomislav Korman
orcid.org/0000-0002-5252-299X
; Rudarsko-geološko-naftni fakultet, Sveučilište u Zagrebu, Pierottijeva 6, HR-10000 Zagreb, Hrvatska
Trpimir Kujundžić
; Rudarsko-geološko-naftni fakultet, Sveučilište u Zagrebu, Pierottijeva 6, HR-10000 Zagreb, Hrvatska
Mario Klanfar
orcid.org/0000-0003-1629-873X
; Rudarsko-geološko-naftni fakultet, Sveučilište u Zagrebu, Pierottijeva 6, HR-10000 Zagreb, Hrvatska
Sažetak
Chain saw machines are used for cutting vertical or horizontal cuts in underground and surface exploitation of dimension stone. Chainsaw performance in quarrying dimension stone depends on the right choice of machine’s operational parameters, cutting elements as well as the conditions and methods of quarrying in the certain type of rock. The key operational parameters which the operator must arrange on a chain saw are chain speed and cart speed movement, while the values of this parameters are based on manufacturer's recommendations and/or the operator experience. The main objective of this paper is to analyze the relationship between the operational parameters, chain design and chainsaw performance. Based on previous research, despite the limited literature on chain saw performance, it can be concluded that chain saws do not operate with optimum operational parameters, and current chain designs are not efficient enough. Influence of the cutting chain design on the chainsaw performance can be analyzed by laboratory tests using a linear cutting machine. Although previous researches provide specific guidelines to increase chainsaw performance, further research should be directed to determine the optimal arrangement and the number of tools in the cutting segment as well as to the influence of the cutting geometry on the force and cutting energy.
It is also reported that insufficient efficiency of chainsaw machines is due the shallow depth of cuts taken by the cutting tools. Chain saw performance can be increased with the increase of the depth of cutting tools or with the decrease of chain speed respectively. Optimal chain speed cannot be determined solely on the basis of the specific energy since the optimal speed also depends on the cutting force and the wear of cutting tools as well as on the amount of material created during the cutting. Additional laboratory and field experiments should analyse the influence of the above quantities on chain saw performance in order to determine optimum constructional and operational parameters.
Ključne riječi
Hrčak ID:
139556
URI
Datum izdavanja:
1.6.2015.
Posjeta: 1.525 *