Analysis of derrikingand slewing of the tower crane with consideration to driving mechanisms characteristics

The variational problem of the movement mode selection for load outreach change mechanism during a steady-state tower crane slewing was formulated and solved in paper, that ensures minimization drive motor power. is nonlinear, so we used modified PSO-Rot-Ring particle swarm met heuristic method its solution. Low- high-frequency oscillations elements start-up were detected optimization process. These are eliminated section due to motion boundary conditions.
 In order increase productivity exploitation overlapping mechanisms operation used. article considers operations derriking crane. To study dynamic processes joint work crane, model built. It takes into account main as well oscillation on flexible suspension two planes: plane derrikingand developed elastic-dissipative characteristics transfer mechanisms, mechanical motors, which describe transient electromagnetic processes. On basis with help Lagrangeʼs equations six differential second part found. addition, each engines described by four equations. As result, system fourteen obtained. describes common dynamics electric mechanisms. obtained numerical methods computer program. For actual construction kinematic, power, energy determined, made it possible estimate loads From results established under significant overloads.High-frequency at beginning low-frequency revealed. This significantly reduces reliability cranes, increases their losses, affects operator maintenance staff.