Improving the reliability of power drives for marine and crane equipment by schematic layout methods

This article is devoted to the problem of increasing the reliability of special power drives designed exclusively on the basis of cylindrical gear ordinary and singlerow planetary mechanisms that allow you to create multifunctional, hightech products endowed with equalizing properties that eliminate overestimation of the mass of nodes and the associated mass of metal structures, provide the product with high technical, economic and operational performance. Complex composite gears with a differential are considered, in which all links are movable, which allows it to work with various functions of branching power flows: distribute movement to several consumers; summarize several independent movements requiring rotation of their input links in one or different directions; create systems with superimposed adjusting motion and systems with stepless regulation, as well as solve other tasks. The main attention is paid to torque distributors, which, with one leading link, have several driven links. Distributors with two slave links are most often used in marine and crane equipment. The development of the theory of transmission of such devices has its own characteristics and is impossible without taking into account their energy kinematic state. The properties of the differential mechanism are formulated and analytical dependencies are built on their basis, with the help of which it is possible to create a distributor with specified kinematic, power, and energy parameters, taking into account the schematic layout requirements. To increase the reliability of distributors with a high value of the total gear ratio, solutions have been developed that simplify the design of the power drive; for structures providing a given misaligned arrangement of the drive shafts, solutions have been proposed that exclude the presence of open gears. All this taken together will contribute to the development of scientific approaches to the design and design of modern models of power drives.

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