Simulation of Multioperational Forestry Machine for the Production of Lumbers and Bundles of Wood Waste

et al. 2019

MSF

The strength and strains of the wood-cement composite primarily depend on the main technоlogical factors such as the used type of binder and wood filler, the method of wood filler preparation, the method of molding, the conditions of hardening. The aim of this work is an experimental study of the chemical additives influence on wood filler to localize the harmful effects of water-soluble wood substances on the processes of hydration and hardening of cement. Using the additives, it is possible to achieve satisfactory strength parameters even on green wood. The maximum strength was obtained when complex chemical additives were applied. The most effective additives involved calcium chloride, liquid glass, aluminum sulfate, lime and ethanolamines. The optimal consumption and ratio of the complex additives components costs also depend on the degree of preliminary wood exposure.

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Influence of Chemical Additives on Strength of Wood-Cement Composite

Запруднов

Sanaev

et al. 2019

MSF

Digital simulation of forest multioperation machine operation

IOP Conf. Ser.: Earth Environ. Sci.

Bykovskiy

2020

In this article, an innovating multi-operational forest machine (MOFM) is proposed. MOFM is based on the tractor processor (TP) and it is planned for bucking trees and making bundles from waste wood. The article presents the results of digital simulation experiments with MOFM compared with TP. The article gives the results of modelling of forests with a reserve of 150 m3/ha and with an average volume of tree trunk volume 0.40 M 3. In the article, the length of the winch rope is assumed from 10 to 30 m. Experiments were performed for different technology options. When working in parallel operations of the MOFM and winch, productivity increases with increasing skidding distance. Productivity increases until the skidding cycle time is less than the MOFM cycle time. After that, MOFM productivity decreases. For our case, the optimal skidding distance is close to 25 m. The length of the queue of trees to MOFM is increased as the skidding distance increases. The queue length stops growing when the skidding distance is 25-30 m. Digital simulation models were realized as computer programs. These models allow you to choose rational MOFM parameters for different forest characteristics.

Digital simulation of multioperational forest machine with a bundling device

IOP Conf. Ser.: Earth Environ. Sci.

Kaznacheeva

2020

In this article, an innovating multi-operational forest machine with a bundling device (MOFMB) is proposed. MOFMB is based on the tractor processor (TP) and it is planned for felling trees, delimbing-bucking operations and making bundles from logging residuals. Two technologies of the MOFMB operation are considered. The first technology provides for sequential operation of the MOFMB mechanisms without combining the operations of felling and processing trees. The second technology provides for parallel operation of the MOFMB mechanisms with a combination of felling and tree processing operations. As a result of simulation experiments, it was found that the tractor achieves the highest productivity in the case of parallel operation of its mechanisms with a combination of operations of felling and processing of trees. At this case, the utilization of the manipulator on the tree felling and the processor on the tree processing and logging residuals packaging will be maximum.