Lymar P. Optimization of load movement machines in storage timber

The thesis shows research aimed at improving the efficiency of the lifting equipment at transshipment timber by optimizing transient driving modes. It was carried out a dynamic analysis of the motion of a three-mass system of the crane "trolley-grab-cargo" for the horizontal movement of the load and clamshell mechanism for the log, identified by their dynamic and kinematic characteristics. Computational model "trolley-grab-cargo" was replaced by an improved calculation model of rolling double mathematical pendulum, their compliance was confirmed. For dynamic and kinematic criteria should form integral functional, optimized transient modes of motion with a cargo of crane and motion of hydraulic grab. A positive effect on the synthesis of optimal laws of motion mechanisms in the form of reducing the dynamic loads in the drive machines and cargo suppress oscillations in the "trolley-grab-cargo" was received and presented. Also, sudden changes in pressure in the hydraulic system of hydraulic grips are reduced. Drive control system for the implementation of optimal laws of motion was developed to confirm the theoretical calculations of experimental research on the developed model of the mechanism. The recommendations for improving the design of load-lifting machines were made on the basis of the results of research which are protected by seven patents of Ukraine.