Author:
LOVEIKIN V.,PALAMARCHYK D.,ROMASEVYCH YU.,BALAKA M.
Abstract
This article presents the results of an analytical study of the kinematic characteristics of the articulated boom system of a portal crane at the start of movement. The specified study was carried out on the section of acceleration of the electric motor of the mechanism for changing the departure, from the beginning of switching on until the nominal speed is reached. In this case, the rated speed of the rotor of the electric motor corresponds to the working speed of the horizontal movement of the load. The acceleration of the electric motor occurs according to the law, which corresponds to the optimization of the root-mean-square deviation of the speeds of the load and the axis of the final bypass block. The study of the movement at start-up according to the law of optimization of the root-mean-square deviation of speeds under various boundary conditions was carried out. Graphical dependencies of the kinematic parameters of the load and its suspension point on the trunk are built. This makes it possible to establish the possibility of practical use of this law. Based on the research, recommendations have been developed for the selection of the initial and final boundary conditions during engine acceleration of the departure change mechanism. Also, the kinematic characteristics of the movement of the gantry crane boom system during launch were analyzed according to the laws of optimization of the root-mean-square deviation of accelerations and jerks, and a comparison was made with the movement of the boom system according to the law of optimization of the root-mean-square deviation of speeds.
Publisher
National University of Life and Environmental Sciences of Ukraine
Subject
General Arts and Humanities
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