Theoretical Studies of Forwarder Productivity with Limited Impact on Soils
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2021, Vol 15, Issue 3
Abstract
Wheeled forest machines currently dominate the logging industry in Russia and in the world. Every year in Russia, the share of machine-made wood harvesting using Scandinavian technology increases, which involves felling trees, delimbing, and bucking them at a swath. Moreover, this technology is used not only for conventional two-machine systems with harvester and forwarder. In some regions of Siberia three-machine systems are gaining popularity. They consist of a feller-buncher, a swath processor, and a forwarder for skidding obtained logs. The issue of increasing the efficiency of forwarders is relevant for the timber industry. Its solving is possible on the basis of a comprehensive assessment of design solutions with the use of modern modeling and process optimization tools at the stage of development design. This approach requires deep theoretical and experimental research and is of great scientific and practical interest. When determining the maximum volume of skidded wood, the following machine limitations are considered: by bearing capacity; by tangential traction force; by the traction of the mover with the soil (tangential traction force should not exceed the traction force of the mover with the driving surface – the soil of the logging site). Besides this, there are recommendations to limit the weight of the skidder with the load, based on the permissible track depth after the first pass of the machine; it is believed that this figure should not exceed 20 cm. This statement is supported by the results of studies of the track development under the cyclic influence of the wheel mover (that is when the forwarder repeatedly passes the same section of the portage). This raises the question of forwarder productivity in the skidding operation with the regard to the track depth limitation.
Authors and Affiliations
O. N. Burmistrova, A. A. Prosuzhih, E. G. Khitrov, O. A. Kunitskaya, E. N. Luneva
Keywords
Related Articles
- EP ID EP694795
- DOI https://doi.org/10.37482/0536-1036-2021-3-101-116
- Views 185
- Downloads 0
Modifying Wood for Creation Plain Bearings of Timber Machines
The use of modified wood in different friction pairs of timber machines and processing equipment is largely due to its high wear resistance, low coefficient of friction and good dissipative characteristics. The positive...
Bleaching of Microcrystalline Cellulose Produced by Gas-Phase Hydrolysis
One of the main consumers of microcrystalline cellulose (MCC) is the pharmaceutical industry, where MCC is used as a binder and filler in direct compression of tablets. MCC is produced by acidic hydrolysis of cellulose,...
Determination of the Mathematical Dependence of the Black Liquor Density on the Dry Matter Content (High Yield Softwood Pulp)
A modern evaporator station is an energy-saving production of evaporated liquor with high dry matter content for ensuring the minimum SO2 emissions from the soda recovery boiler. Such stations are equipped with Falling F...
Scots Pine (Pinus sylvestris L.) Undergrowth on the Dumps of the Chrysotile Asbestos Deposit
The studies were carried out on the dumps of overburden rocks and tailings of poor ores of the chrysotile asbestos deposit. According to the scheme of forest site zoning, the studying area belongs to the pre-forest stepp...
Growth and Condition of the English Oak in the Mixed Stands of Forest Shelterbelts
An analysis of the creation and operation of protective forest plantations at agricultural enterprises of the Central Chernozem Region allows us to assert that positive ameliorative functions are performed by those fores...