Impact on the Operation of a Forwarder with the Wheeled, Tracked-Wheel or Tracked Chassis on the Soil Surface

Abstract

The impact of a small forwarder with the wheeled chassis, tracked-wheel chassis, and tracked chassis traveling on the soil profile was studied. The three chassis types were assessed for the influence of the loading of forwarder cargo space and the degree of tire inflation on induced specific and actual pressures of tires on the soil surface. Penetrometric resistances of soil profile and rut depths in the forwarder driving track were measured. The effect of a layer of logging residues in the forwarder driving track on the size of induced actual pressures was determined. The practice of determining the impact of forest machines on the soil surface by means of a specific tire pressure does not have a full informative value. In the forwarder wheeled chassis, maximum values of actual pressures exceeded specific pressures established numerically by up to 203%. Average values of actual pressures could be reduced by 45% by reducing the pressure of tire inflation, by 70% with the use of tracks, or by 49% by traveling on the layer of logging residues. As compared with the wheeled chassis type, the tracked type of the forwarder chassis induced actual pressures to lower by 81% and the rut depth after ten forwarder passes was smaller by 50%.

Control of Pivot Steering for Bilateral Independent Electrically Driven Tracked Vehicles Based on GWO-PID

“…This paper utilizes the multibody dynamics simulation software RecurDyn (V9R4) to construct the dynamics model of the tracked vehicle, primarily creating the tracked vehicle mechanism based on the 3D model [38][39][40]. The creation of the tracked vehicle's…”

“…This paper utilizes the multibody dynamics simulation software RecurDyn (V9R4) to construct the dynamics model of the tracked vehicle, primarily creating the tracked vehicle mechanism based on the 3D model [38][39][40]. The creation of the tracked vehicle's propulsion system primarily involves the design of the dimensions and shapes of the four wheels and tracks, the design of the tensioning device, and the addition of kinematic pairs.…”

Basics of Forest Ecology and Management

“…Currently, there is a need to find and introduce acceptable technologies adapted to local conditions. In view of the challenges and threats associated with logging and skidding such as soil compaction (Jamshidi et al, 2008;Zemánek and Neruda, 2021) and rut formation (Toivio et al, 2017), it is also necessary to observe the restrictions set by the law (Mongolian Law on Forest, 2012).…”

Rubber-Tracked Forwarders—Productivity and Cost Efficiency Potentials

“…Both systems were attempts to achieve better bearing capacity from tracks while also avoiding the shearing forces on the ground and the harsh vibrations for the operator that come with steel tracks. Rubber-tracked forwarders potentially provide increased accessibility to wet areas throughout the year through low ground pressure [25] and better operator ergonomics through reduced vibrations. In addition, the lower ground pressure from rubber-tracked forwarders can reduce damage to the forest floor and minimize the risk of soil erosion and rutting, which is especially important in sensitive ecological areas [26].…”