Shevchuk O. Optimization of luffing articulated jib tower crane

The thesis shows research aimed at improving the efficiency of the articulated jib tower cranes by optimizing of luffing. The dynamic analysis of luffing tower crane with an articulated jib by moving the main section of the joint-articulated jib systems and by moving the main co-sections hinged articulated boom system and trolley. The basic kinematic and dynamic characteristics by changing departure. Optimized transitional regimes motion hinge-jointed boom system and trolley for kinematic and energy criteria. The influence of parameters hinge-jointed boom system and trolley with flexible suspension hanging on the load on the best modes of motion. Obtained and presented a positive effect in the synthesis of the optimal mode of motion in the form of reductions in dynamic loads in the drive mechanism and reducing the time of transfer operations by eliminating the residual load fluctuations at the end of the period of movement. The system of control drives for optimal implementation of the laws of motion. To confirm the theoretical calculations performed experimental studies on the developed physical model of tower crane with a hinge-jointed boom system. Based on the research results offered recommendations to improve traffic control and construction lifting equipment, protected by three patents of Ukraine for utility model and scientific work.