Lutsko T. Study of heavy boom rail cranes of the type CKP parameters with long precision of positioning loads

The object of investigation is a heavy boom rail crane of the CKP type. The subject of investigation is a deformability of associated elements of cranes in the time of load lifting. The purpose of investigation is increasing the precision of load positioning by boom rail cranes of the CKP type due to reduction of its deformability. Methods of investigation: the methods of theoretical and structural mechanics, the theory of differential equations, numerical methods on electronic computer usage, the methods of mathematical statistics. Innovation includes the following: working out the mathematical models of the static and dynamic strained states of tower-boom equipment taking into account position of structural units which are the condition of geometry non-linearity of system; determination of establishment of the influence of portal strained state of CKP cranes and axial backlashes in support-rotating device on increment in hook overhangs under loading. The scientific significant of the received resultsconsists in the development of knowledge about strained states of tower-boom equipment and running gear of cranes and their influence on the precision of load positioning. The practical importance consist in working out and applying interactive programme complex for calculation of tower-boom equipment, as well as recommendations as to modernization of existing CKP crane constructions. The results are used at Zuevsky Power-Mechanical Plant, at public corporation NIPTKI "Ukrkranenergo" as well as in the instruction the process at Donbass State Academy of Civil Engineering and Architecture. The sphere of application is crane-building.