Methods for Increasing the Material Resistance of the Mulching Tool Body Against its Deformation in Operation

Abstract

Instruments working in the cultivation of forest areas, for example under the guidance of high stress, are exposed to factors of heterogeneous environment which are soil, wood, various types of rocks, sometimes waste -metal, plastics or glass as well. The mulching tool body, the forging, deforms and worsens rapidly after loss of the WC toe-caps. Currently used tools have a non-heat-treated body material with a ferritic-pearlitic structure that has low abrasion resistance. One of the possibilities is to heat the tool body. Another possibility is to apply suitable welds to exposed areas. By correctly selecting the thermal mode of the tool material or by applying the welded material to the exposed body part of the tool, we can ensure that the tool's operating time is increased.

Overview of milling implements for grinding trees and shrubs

“…The main working body in such machines is a rotating shaft-rotor fixed at the ends, the design of which is determined by the purpose, the material being processed and the working conditions. The rotor can be equipped with movable (hinged) hammers that chop wood due to impact (Figure 4), or fixed, rigidly fixed cutters with carbide inserts that chop wood by cutting [3,11,14,15]. Often the manufacturer provides for each rotor several types of knives or hammers for grinding various materials: grass and branches knives or hammers for thick branches and stones.…”

Power Characteristics of Mulcher Joints When Removing Tree and Shrub Vegetation

“…Анализ технологий и конструкций техники для расчистки лесных площадей от древесно-кустарниковой растительности [3,5,9] ротора [18]. Существенное преимущество данных машин, в сравнении с другими -это способность одним рабочим органом не только срезать, но и частично измельчать древесно-кустарниковую растительность.…”

“…При проведении лесовосстановления и реконструкции лесонасаждений, кроме применения традиционных лесных машин (харвестеров и форвардеров, машин для транспортировки лесосечных отходов) [4,6,22] с последующим удалением пней и корней корчевателями различной конструкции [3,5,10], перспективным является применение мульчеров и ротоваторов [1,8,12], которые требуют значительных затрат мощности на их привод. В связи с этим целью исследований является изучение влияния различных природно-производственных факторов на выбор параметров технологического оборудования [15,21], базового шасси [11] и их надежность [18,20]. В настоящий момент отсутствуют методики и рекомендации, позволяющие производить расчет фрезерного оборудования для имеющегося базового шасси или решать обратную задачу, в том числе на основе математического моделирования [11,13].…”

Influence of Rheological Properties of a Soil Layer Adjacent to the Working Body Cutting Element on the Mechanism of Soil Cultivation

“…One of the most important energy indicators of any soil cultivation machine is the resistance of the working bodies to wear due to movement in the soil. The extent of wear grows linearly with the time of operation Tolnai et al, 2006;Ľuptáčiková and Ťavodová, 2018).This indicator limits the seizing width and, hence, the aggregate's performance. Traction resistance of single working body operating in conditions of blocked cutting at depth from 0.25 to 0.30 m reaches 10 kN, what is a reason why the high performance of these aggregates during deep cultivation cannot be achieved.…”