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  • Development of the network of forestry roads is the important factor of increasing economic availability of forest resources and forest use in the regions of the european north of russia

    the development of a network of logging roads and increasing the efficiency of its functioning is the most important factor in increasing the economic accessibility of forest resources and intensifying forest management in the regions of the European North of Russia. Substantial development of the network of forest roads is necessary to increase the availability of forests for continuous and selective cutting, thinning, reforestation. It is also necessary to improve the efficiency of the operation of logging road trains while exporting forests, to increase the degree of development of the allowable cutting area, to increase the level of forest fire safety of forests, and to prevent and extinguish forest fires.

    Keywords: availability of forest resources, logging roads, timber road truck, local stone materials, road construction

  • Opportunities for the effective solution of technical-economic engineering problems during planning and optimization of wood transportation

    The developed calculation dependencies for determining the log truck movement indicators during non-steady and steady motion in different modes make it possible to solve technical-economic tasks with adequate accuracy and certainty during planning and optimization of wood transportation. During two-stage timber hauling a log truck based on MAZ-6312B9 has advantages in exploitation and technical-economic indicators in comparison with a log truck based on Scania R-420. There are opportunities for a rapid increase of passing ability of a log truck while using an active trailer. This provides the work of a complete log truck on a forest road, and also there is a possibility to eliminate two-stage timber hauling, with rise of efficiency and technical-economic indicators

    Keywords: wood transport, optimization, log trucks, motion simulation, efficiency

  • Rising functional and technological efficiency of a log truck hydraulic manipulator

    One of the problems with exploitation of log trucks is damage to equipment during the process of transportation of wood material and during loading-unloading operations. The authors of the paper suggest equipping a log truck with an innovative protective butting device in order to increase reliability and work efficiency of the hydraulic manipulator. This device will allow aligning the sawn wood ends of wood products, and thus it will allow excluding a chance of protruding of sawn wood ends at an inadmissible scale which prevents forming a neighboring pack of wood products. The device will also allow excluding mechanical damages of a hydraulic manipulator by sawn wood ends of wood products being laid on a load platform. This will increase its reliability and will reduce the expenses on repair works.

    Keywords: log truck, hydraulic manipulator, modernization, reliability, safety

  • To the issue of advancement jaw crushers

    Reflects the results of work aimed at finding new Technical solutions to reduce power consumption in crushing lumpy rocks in the jaw crusher. Main technical solutions for advancement the jaw crushers are presented in the form of Intellectual matrix of evelopment. The ways of improvement construction jaw crushers in order to increase process efficiency crushing

    Keywords: rock, crushing, matrix of development, patent, jaw crusher

  • Modern Russian forestry machine-building development trends

    The paper describes and analyzes the main development trends of Russian forestry machine-building in modern conditions. Russian forestry machine-building enterprises do not use presently available perspectives in import substitution in connection with the depreciation of the rouble. Neither do they use the opportunities for producing integrated multifunctional machines. Development and production release of forestry machines for assortment harvesting based on Russian-manufactured tractors fitted with technological equipment of foreign manufacture is the first step on the way of creating domestic vehicles of analogous purpose. These machines will be fully complete with home-produced technological equipment. This will allow reducing the costs on the production of these machines and on their timber-harvesting operations

    Keywords: forest harvesting technology, felling, limbing, cutting into lengths, skidding, forestry machine-building, development

  • Analysis of patents as a factor in the study of technical level of technological development on the example of jaw crushers

    The article presents the results of analyzing patents, aimed at improving the design of jaw crushers and crushing processes using them,conducted in order to establish the technical level of their development.

    Keywords: rock, objective tree, crushing, patent, jaw crusher

  • Modern forest inventory instrument

    The article describes the construction of a modern forest inventory instrument for forest inventory operations, that is a calipers and an increment borer, combined in one body. The described construction provides combination of two operations, which are determination of diameter of a tree trunk and core sampling .

    Keywords: borer, forest instrument, calipers, forest inventory

  • Logging transport performance analysis under the real natural-industrial conditions

    One of the main tasks when organizing workflows of logging transport is the choice of log truck optimal type for logging under specific operation conditions. The method proved by the authors and engineered modelling program of log trucks traffic parameters give an opportunity to accomplish engineering tasks of the choice of logging transport type to operate under various natural-industrial conditions for certain. The example of the log truck optimal type choice is given.

    Keywords: logging transport, grade computations, traffic parameters, performance, import substitution

  • Synthesis of new technical solutions using functional-technological analysis with increment borer as an example

    The article presents a method for searching for new technical solutions. The method is based on a functional-technological analysis of a system, including pointing out its separate elements and studying the interaction between them. The efficiency of the presented method is shown on an example of improvement of an increment borer construction. Application of a functional-technological analysis allows bringing technics development to a new level.

    Keywords: functional-technological analysis, increment borer, patent, tree age, development matrix

  • Shutoff pipeline valves with the compensation camera

    In article the design of shutoff pipeline valves of bilateral action which thanks to existence of the compensation camera connected by the channel with an internal cavity of the device possesses high safety in operation at the expense of an exception of probability of a rupture of the case and a cover, expression of a working environment of an internal cavity of the device in environment through consolidations under the influence of excessive pressure in an internal cavity is described.

    Keywords: valve, main pipeline, pipeline fittings, pipeline transport.

  • New design of a valves for the main pipeline

    Importance of cooperation of universities with machine-building enterprises from the point of view of an intensification of creation of objects of intellectual property is shown in article. The description of the valve design developed by authors for the main pipeline which allows to provide compensation of excessive pressure in an internal cavity when finding a lock in a closed position and heating of the case of a valve is given. The described design of a valve can be used as shutoff valves on pipelines of nuclear power plants, thermal power plants, main oil and gas pipelines.

    Keywords: valve, main pipeline, pipeline fittings, pipeline transport.

  • Caliper with a built-in marker

    The article describes the construction of a modern forest instrument for forest inventory operations. The equipment consists of a caliper and a built-in marking device. The developed construction allows conducting two operations simultaneously: determination of a trunk diameter and marking a measured tree trunk. The suggested construction leaves visual marks on measured tree trunks automatically, that allows avoiding doubling of measuring results.

    Keywords: marker, caliper, trunk, taxation

  • New method for coupe demarcation

    The article examines the existing methods for coupe demarcation and the ways of fixation of wood plots at an area for future logging works. A new method is suggested, based on using RFID-technologies. Fixation of borders in this method is realized using RFID-tags with recorded information placed into the ground. Using the suggested method will allow lowering the labour intensity of coupe demarcation, fixing of exact borders of a logging site at an area, eliminating logging works out of the bounds of cutting areas, etc.

    Keywords: wood cutting area, coupe demarcation, forest inventory operations, RFID-technology, RFID-tag

  • Functional and technological synthesis patentable solutions for continuous cutting of trees and shrubs

    The article shows the effectiveness of the application of functional and technological methodology for analysis and synthesis of patentable solutions for continuous cutting of trees and shrubs. Some features of the synthesized technical solutions in this field is shown

    Keywords: trees and shrubs, continuous cutting, patentable solutions, functional and technological analysis

  • Way of clearing of the vibrations arising at centrifugal drying of forest products

    In article it is shown that search of patentable decisions for centrifugal dehydration of wood materials is intensified. The design of basic knots of the device for centrifugal drying of forest products directed on clearing of vibration loadings is considered

    Keywords: forest products, dehydration, centrifugal drying