Self-braking gears based on the 2K-H planetary scheme

Stricter standards for a wide range of equipment and installations have naturally led to increased requirements for the technical and operational parameters of their components. This necessitated the development of mechanisms considered as integral components of complex systems combining mechanical, electrical, hydraulic and other elements. The key principle of most modern design solutions is to minimize sliding friction (in particular, in screw mechanisms) by switching to rolling friction or mixed friction. A wide range of self-braking mechanisms, including cylindrical self-braking gears, demonstrate high efficiency in forward running mode. The use of such gears in machine drives opens up new possibilities for layout, reduces size and weight by reducing or completely eliminating braking devices. Planetary gears with twin-shaft satellites of internal and external engagement, based on the 2K-H planetary reductor, have a number of advantages. They are capable of converting rotational motion into rotational or translational motion, provide self-braking with high forward running efficiency (more than 50 %), are characterized by increased smoothness and other valuable properties. The conditions for the implementation of various self-braking options in gears with twin-shaft satellites are achieved due to the precise positioning of the working surfaces of the engagement profiles, determined by the number of teeth of the wheels. As part of the study, the geometric parameters and power loads acting on the planetary transmission of the 2K-H circuit with external gears were determined, the conditions of self-braking of the polar engagement were analyzed, and coaxial gears in which the output link performs translational motion were considered.
EDN: JGPDSC, https://elibrary/jgpdsc

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