ANALYSIS OF THE QUALITY OF THE CRANE ROTATION MECHANISM DEPENDING ON THE INFLEXIBILITY OF ITS ELEMENTS

During the operation of portal cranes, insufficient controllability of the rotation mechanism was noted. The operation of the rotation mechanism is accompanied by large, slowly damped oscillations of the rotary part [1, 2]. This phenomenon makes it difficult to orient the load handling device, leads to increased dynamism and deteriorates the reliability of the rotation mechanism. The operating mode of the rotation mechanism shows that the fluency of its operation is affected by the inertia due to the boom system of the crane at large outreaches. The design of the rotation mechanism includes gears, shafts, couplings and is a flexible nexus. This flexible nexus partially absorbs the engine torque and does not allow for an absolute feedback between the control link – the motor and the controlled link – the rotary element of the crane. If you change the inflexibility of the drive, you can get a different quality of control. Therefore, a study was made of the rigidity of the rotation mechanism [3, 4]. is reloading the of angle of deflection the inflixibility of