Method of Loading Capacity Calculation of Bevel Precessional Gear for Pipeline Valve Drives
The study considers the problem of loading capacity calculation of bevel precessional gear for pipeline valve drives. By nowadays spiroid gear and worm gear are the basis for industrial engineering of gearboxes. These gearboxes have a lot of disadvantages such as a low efficiency, significant starting torque and low reliability in cold temperature operating conditions. Researchers propose to use gearboxes based on bevel precessional gear. Bevel precessional gear is one of the progressive types of gears with a small shaft angle. Bevel precessional gears allow to increase the loading capacity, reliability and durability of gearboxes to reduce their cost and mass and dimension characteristics and to improve their efficiency and performance criteria. The study consider the problem of determination the loading capacity by the transmitted torque considering multiple contact of teeth and fixed value of the maximum contact stress allowed by the pinion and gear materials. Researchers solve the inverse problem of loading capacity-transmitted torque is calculated at a fixed number of tooth pairs in contact. The results of studying the bevel precessional gear enable to implement original methods of evaluation its loading capacity based on contact stress.