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Integrated planetary gearboxes of leading west company are analyzed in the article to design competitive gearbox for shipboard winches of the same type for domestic needs. The analysis has been done from the point of view of the used structural scheme and from power-kinematical point of view. For the first time it was paid attention to necessity of studying the influence of rope location on the drum on load capacity of gearbox. For this purpose the calculation scheme and dependences on radial load on drum bearings and their estimation reactions are given in the article. It’s determined that reaction values in drum bearings are changing linearly and depends on rope location on the drum. The calculation of radial displacements in drum’s bearings depending on load value, radial backlash and deformation of rolling elements are made in article. The calculation of displacements made according to formulas which take into consideration a principle of load sharing between rolling elements. In the article was developed the method and algorithm for calculation the maximal load on rolling element. The method based on the solution of the problem about load sharing between rolling elements with using integral function. Approximate formulas of integral function depending on bearing type are determined. The dependence on calculation of radial displacement of inner bearing race relative to bearing outer race is given. Dependence is expressed as function of deformation parameter. The graphs of displacements in drum bearings depending on hoist rope location are given in the article. It’s determined that displacement of races in drum bearings generate the axis skew of drum relative central axis of gearbox and generate uneven load sharing on face width of the last step of gearbox. It defines overall dimensions and weight of the gearbox. Efficiency of axis skew is given trough coefficient of load sharing unevenness on face width.

vestnik gosudarstvennogo universiteta morskogo i rečnogo flota imeni admirala s. o. makarova/vestnik gosudarstvennogo universiteta morskogo i rečnogo flota imeni admirala s.o. makarova

FOR THE THEORY OF DESIGNING AND CALCULATION CONSTRUCTION OF SHIPBOARD HOISTING WINCHES WITH INTEGRATED PLANETARY GEARBOX