FINDING THE SERVICE AREAS OF AUTOHYDRAULIC LIFTS BY THEIR COMPUTER MODELS

Abstract

The article is a continuation of joint research of the departments of construction and road machinery and engineering and computer graphics of KhNAHU in the field of mechanical engineering. The research is dedicated to the development of approaches and algorithms for modeling the work processes of various machines used in the construction of roads and buildings. Previously, models of wheel loaders, motor graders, scrapers, etc. have been studied. In particular, the issues of stability of machines on inclined surfaces, behavior when moving on obstacles, the strength of the structure when hitting an insurmountable obstacle, the ability to move along a given trajectory were determined.

The aim of this work is to develop a digital prototype of an auto-hydraulic lift (AHL, lifting platform) design using computer simulation methods in the Autodesk Inventor package. The proposed model has developed to perform preliminary studies of kinematics and modes of different sizes and capacities AHLs under specified operating conditions.

One of the resolved tasks was determination of the requirements for the operation of hydraulic cylinders for controlling the inclination of the AHL booms (or these angles themselves) to place the work platform at a given point in space. Another issue is to determine the trajectory of the AHL platform from the current point to another set point, provided the shortest path is determined, or taking into account the existing obstacles (in terms of parameters of the angles of the platform or hydraulic cylinder control parameters).

The developed model will also be useful to determine the areas of reach of the selected equipment during installation for construction or maintenance of buildings, when performing tree pruning tasks, etc., depending on the size of the lifting platform and the location of the environment. The presence of such models at the enterprise will allow making the optimal choice of the corresponding class car for each concrete task.

Keywords: computer modeling, digital prototype, road construction equipment, auto-hydraulic lift, optimal trajectory, area of reach, Autodesk Inventor.