ON RESOURCE TESTING OF STRAIGHT-BEVEL GEARS IN DRIVE MECHANISMS OF COTTON MACHINES

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11 феврал 2025

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ON RESOURCE TESTING OF STRAIGHT-BEVEL GEARS IN DRIVE MECHANISMS OF COTTON MACHINES

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This article is dedicated to endurance testing of straight-tooth bevel gear reducers used in various machines, including cotton farming machinery. The choice of the test object is due to the fact that many machines require bevel gear transmissions for spatial arrangement of components. These gears enable the transmission of rotational motion between intersecting shaft axes within compact external dimensions. Additionally, bevel gear transmissions are the most common type of gear mechanisms after cylindrical ones.For several objective reasons, straight-tooth bevel gears have gained wide use. Unlike cylindrical gears, they are more sensitive to manufacturing and assembly errors as well as to elastic deformations of transmission elements under load. When linear surfaces are in contact, errors in their relative positioning-shifts along and across the generating line of the teeth, as well as rotations around it-affect the tooth contact quality differently. While cylindrical gears react only to rotations relative to the generating line, bevel gears are sensitive to all errors associated with these shifts and rotations. The article presents the theoretical basis for endurance testing, describes the test stand, and outlines the methods of testing. A test stand with four bevel gear reducers was chosen as the stand configuration. This setup offers high efficiency and minimizes time spent on adjustment work. Certain drawbacks inherent in multi-reducer stands were considered during the endurance tests, enabling reliable results. The tests employed specially developed plastic lubricants based on vegetable oil residues. Based on theoretical considerations, the article reveals the unique aspects of endurance testing of reducers, allowing for better planning of such tests in advance.

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# testing# resource# wear# error# load# stand for a conical gearbox# specific sliding# lubrication conditions

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https://eroi.uz/11.0008/A0225-0015

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