The Technique of Formation of System of Forestry Machines

Мамматов,; Mammatov, Vladimir; Мохирев,; Mokhirev, Aleksandr

doi:10.12737/25201

Forestry Engineering Journal

2017

DOI: 10.12737/25201

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The Technique of Formation of System of Forestry Machines

Мамматов Мамматов¹,

Vladimir Mammatov²,

Мохирев Мохирев³

et al.

Abstract: Лесоинженерное дело --------------------------------------------------------------------Многообразие природно-производственных условий, в которых приходится вести лесозаготовительную дея-тельность во многом затрудняет выбор лесозаготовительных машин для каждого отдельного предприятия отрасли имеющего в своем составе лесозаготовительные участки. В зависимости от многочисленных природных и производст-венных условий таких как: уклон местности, несущая способность грунтов, температура окружающей среды, макси-мальн… Show more

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Cited by 3 publications

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Simulation of the Production Process of Timber Harvesting With the Help of Petri Nets

Соколов¹,

Осипов²,

Osipov

2017

Forestry Engineering Journal

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The article describes the approach to a substantiation of a choice of machines systems for wood harvesting, based on simulation modeling of manufacturing processes using Petri nets. Selection of groups of sites with relatively similar conditions from the point of view of technological process of timber harvesting is justified. The results of performed field investigations, modeling and improvement of processes on the example of one model cutting area are given. Simulation results showed that under the conditions of considered cutting area average productivity of forwarder is slightly higher than possible performance of the harvester under given conditions, which leads to forced outages of forwarder, which account for about 12% of time. When modeling, distribution of forwarder' down time and allocation of its working time on the transaction is given. As a result of performed study it was recommended to replace forwarder Komatsu 890.3 by more light and economical forwarder Komatsu 860.4. Simulation performed after making the model changes, showed that in this case forwarder's down time is reduced from 12% to 8%. Taking into account lower costs of buying and maintenance of this forwarder, as well as lower fuel consumption, it was determined that in the case of proposed option, it will possible to reduce the specific costs for procurement of one cubic meter of wood 274.7 to 266.7 RUB, i.e. by 3.1%. Thus, in solution of real industrial problem, the effectiveness of the proposed approach to the assessment of options for the acquisition of systems of machines for wood harvesting has been proven.

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Simulation of the Production Process of Timber Harvesting With the Help of Petri Nets

Соколов¹,

Осипов²,

Osipov

2017

Forestry Engineering Journal

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Substantiation of the Technology of Wood Harvesting With the Help of Imi-Tation Modeling on Petri Net

Соколов¹,

Осипов²,

Osipov

2018

Forestry Engineering Journal

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The article is devoted to the description of the solution of the problem of substantiating the technology of wood harvesting, using simulation modeling of production processes on Petri nets. The possibility of using specially developed simulation models for the operation of forestry machine complexes consisting of a harvester and forwarder is con-sidered, not only for making decisions on the choice of machines for the formation of complexes, but also for justifying technological solutions. The solution of the problem is described in the example of a plot of irregular shape with a long trail of considerable length. The basis of the used approach is the use of the method of discrete-event simulation on Petri nets. The results of field research, modeling and improvement of the technological process are given. The results of the simulation has showed that the forwarder is loaded unevenly under the conditions of the considered cutting area . The simple of this machine was 24.5 hours or 7% of the time. A down-time of harvester was 9 hours or 3%. As a result of analyzing the simulation of the machine downtime distribution over time, it was found that this was due to the constantly decreasing forwarder performance, due to the increasing distance of skidding. As a result of the carried out research, it has been recommended to make a change in the technology for the development of the cutting area, consisting in the fact that the harvester does not start with the apiaries which are close to the loading platform, but from distant ones at the end of the main line. Modeling performed after the introduction of changes into the model has showed that in case of a shift to the proposed technology for cutting logging, productivity of harvester + forwarder machine complex can be increased by 2.3% by reducing the total downtime of the machines. It is possible to recommend the use of such technology in case of logging sites with a long haul of considerable length. Thus, when solving the real production problem, the effectiveness of the proposed approach to the evaluation of options for technological solutions for logging

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Comprehensive evaluation of technological measures for increasing availability of wood resources

Marija¹,

Mokhirev²,

Tatyana³

2018

J Appl Eng Science

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The purpose of the work is to develop technological measures that make it possible to increase the availability of wood resources in a certain area of the forest reserves with the minimum expenditure of resources (fi nancial, labor, material). The results of research of theoretical and methodical bases of availability of wood resources have been provided; the following fi ve key types have been identifi ed: ecological, transport, technical, technological and economic availability. On the basis of factor analysis of wood availability, the following technological measures aimed at the most effective wood availability management have been developed: the involvement of wood waste in the production process of an enterprise with the purpose of additional products manufacture; selection of the optimal system of logging machines; selection of the optimal route for wood raw materials transportation using the minimum cost method. For approbation of the developed measures, the Gremuchinskoe logging site of the Novoyeniseiskiy Wood-Chemical Complex CJSC, located in Krasnoyarsk Territory, was selected. The average annual volume of raw materials harvested for sawing in this area is 240,000 m3. The primary assessment of the availability of wood raw materials showed that more than 66% of the total stock of raw materials (by volume) in the specifi ed area is unavailable for effi cient industrial development. The introduction of the developed measures allowed reducing this indicator to the level of 23.84%.

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The Technique of Formation of System of Forestry Machines

Cited by 3 publications

References 5 publications

Simulation of the Production Process of Timber Harvesting With the Help of Petri Nets

Simulation of the Production Process of Timber Harvesting With the Help of Petri Nets

Substantiation of the Technology of Wood Harvesting With the Help of Imi-Tation Modeling on Petri Net

Comprehensive evaluation of technological measures for increasing availability of wood resources

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