Analyzing the load for the design elements of the working equipment of the loader with a telescopic boom

Abstract

Problem. The pace of road construction and reconstruction dictates high requirements for modern equipment, and in most cases the requirements relate to work equipment. When performing technological operations, external loads are transmitted through the main working body to all elements of work equipment, components and parts of the machine as a whole. Methodology. The use of software products makes it possible to preanalyze any combinations of design, modeling, as well as strength studies and strength testing. On the basis of the obtained data, it is possible to analyze the load in the nodes of the metal structure of the working equipment without conducting field tests. The work is a continuation of previous studies using computer modeling methods in the engineering industry. Designing or modernization of technical objects at the moment is impossible without creating three-dimensional models. The purpose of this work is to develop a digital model of the telescopic loader equipment in the "Dynamic Simulation" environment of the Autodesk Inventor software package, to perform research on the kinematics of movement and load modes of individual elements. The use of telescopic working equipment expands the capabilities of front loaders on a wheel base, but in turn, leads to an increase in material costs during design and production. Results. The process of separate scooping of bulk material in a stack is considered, which consists in introducing a bucket into the stack with a progressive movement followed by stopping the loader and turning the bucket. Originality. The main forces acting on the working equipment during the rotation of the bucket and the boom during the scooping process are the gravitational forces of the elements of the working equipment, non-conservative forces arising in the cylindrical surface of the section and the normal force from the side of the wall of the stack of material. Practical value. External loads are applied to the edge of the bucket. Their direction depends on the trajectory of the working equipment and in the process of simulation they changed depending on the current vertical coordinate of the cutting edge of the bucket.