Ryabukhin P., Kunitskaya O. Feasibility of bandle bucking of low-quality random length stems felling residues // Resources and Technology. 2026. №4, Vol. 23. P. 1‒20.

Feasibility of bandle bucking of low-quality random length stems felling residues

Ryabukhin
Pavel

Pacific State University, 000340@pnu.edu.ru

Kunitskaya
Olga

Arctic State Agrotechnological University, ola.ola07@mail.ru

Key words:
logging; felling residues; bandle buckling; sawing machine; clamp

Summary: In the Russian Federation, as in most of the countries of the world, the sorting group of technological processes for harvesting wood dominates, providing for the export of finished products from cutting areas in the form of wood assortments (special-purpose logs). The most widespread one is the so-called Scandinavian technology, implemented by using a complex of cutting machines, including a harvester and forwarder. Most of the felling residues in swaths, all other things being equal, are left when the Scandinavian technology of logging operations is used. Some of them are pressed into the soil on the skidding trails, some are crushed. However, as the practice of surveying logging sites in various regions of Siberia and the Far East shows, a fairly large proportion of logging residues is technically available and can be collected for future use. The article presents the analysis of scientific research in the field of studying the issue of designing an installation for bucking bundles of round timber in the form of thin-dimensional low-quality stem and felling residues. The article considers the results of scientific theoretical and practical research in the field of energy intensity of the process of cutting bundles of round timber and the operability of the installation, provides materials on the choice of the type of saw blade, cutting tool and the shape of the cross-section of the receiving device of installations for batch bucking, ensuring the elimination of saw bar clamps during sawing. After analyzing a large amount of scientific information and the results of the practical application of installations for batch bucking, we can conclude that this method of bucking has obvious advantages over the piece-by-piece processing of individual timber. At the same time, as the practice of using such installations already in operation has shown, one of the reasons for their low efficiency is the frequent stops due to the clamping of a pack of used cutting body in the form of a PCU-30M saw chain in the cut. In this regard, the article raises the urgent issue of finding a design for the cutting body of a bucking unit that ensures the safety of the sawing process for bundles of round low-quality timber and felling residues. The article presents preliminary theoretical studies that will form the basis for further research on the development and creation of a non-clamping cutting body of a saw blade for batch bucking and on numerical values calculation of its design parameters using mathematical models in the form of software products.

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Feasibility of bandle bucking of low-quality random length stems felling residues