Research of Trenching Machines with Mechanical Operating Principle

The process of soil destruction by a milling tool is considered, based on the interaction of the cutting elements with the soil mass during complex tool movement. The movement of the cutters is described as a superposition of translational motion and rotation, resulting in a cycloidal trajectory. Analytical relationships are obtained for determining the absolute cutting speed, kinematic cutting angle, and chip thickness, taking into account operating mode parameters. An analysis of the forces acting on the milling tool is conducted, including active feed and rotation forces, soil resistance to destruction, and additional loads arising during the transportation of disturbed soil and operation in a thixotropic environment. Hydrodynamic effects and secondary forces influencing the overall tool loading are taken into account. Based on an integrated approach, a mathematical model of the interaction between the milling tool and the soil is proposed, allowing one to evaluate the influence of kinematic and force parameters on the efficiency of soil destruction. The results of the study can be used in the design and optimization of earthmoving equipment.

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