Abstract
Planetary gearboxes are often used for their high power density. Designs featuring a rotating carrier are popular because of their high gear ratio and potentially good efficiency. Especially in bigger constructions as in wind turbine gearboxes, it has been observed that the contact pattern moves in the width direction while the carrier rotates. This may lead to higher damage on the tooth flanks or reduced lifetime of the planet bearings underneath the mesh due to oscillating loads. The main influences on this phenomenon have yet to be investigated and no characteristic value has been defined to describe the moving contact pattern. It is only with this type of coefficient that the complex results of contact analysis can be evaluated clearly so that disadvantageous constructions can be distinguished from better ones. Therefore in this paper a coefficient to evaluate moving contact pattern is defined and used in a theoretical study about the influence of a radially displaced sun shaft on the contact pattern movement.
Highlights
Compared to spur gear stages, planetary gears have advantages regarding power density, potentially high efficiency and offer the possibility to use multi-shaft operation
It is limited by the space occupied by the strain gauges in the tooth root and the load distribution needs to be calculated from the tooth root extension
In the following investigation the contact sun gear and planet as well as planet and ring gear are examined separately by comparing configurations that only differ by one parameter
Summary
Compared to spur gear stages, planetary gears have advantages regarding power density, potentially high efficiency and offer the possibility to use multi-shaft operation. Terrin [26] analyzed the influence of lateral and angular planet pin errors on load distribution over the face width with strain gauges in the tooth root. Load distribution over the face width is usually measured using multiple strain gauges applied to the tooth root like Kahraman, Nam and Kamps did [12, 14, 18]. In this case, it is limited by the space occupied by the strain gauges in the tooth root and the load distribution needs to be calculated from the tooth root extension. A method for this calculation was proposed by Paucker [21]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
