Research of process overcoming obstacles by tillage tools

Abstract

The patterns of interaction between tillage tools and obstacles in forest soils (stumps, roots, stones) are important for the development of specialized forestry tools. They largely determine the type of a tool, tool geometry and modes of operation. In this study, the process of overcoming obstacles with a tillage tool using the method of multibody dynamics (MBD) was studied. For this purpose, CAD SolidWorks and a software program for engineering calculations SolidWorks Motion in which a virtual test bench was created was used. The forces applied on the standard, experimental and disk cultivator tillage tools were studied in various interactions with an obstacle. Studies have shown that in frontal interaction with an obstacle an experimental tillage tool has power characteristics similar to a disk cultivator, and in lateral interaction they are similar to the standard one. It provides reliable in overcoming obstacles with a small mass. Laboratory studies were conducted in the soil channel to test the simulation results. On the basis of the results of the experimental test the differences of the theoretical and practical values of traction resistance of a cultivator section were established during the overcome of an obstacle. For the experimental tillage tool, the differences in the maximum values at the entrance to the stump are 3.9%, for the disk, 1.7%.