An experimental study on the effect of carrier pinhole position errors on planet gear load sharing

Abstract

In this study, the test was conducted to verify the effect of carrier pinhole position errors on planetary gearbox load sharing. A 3D measurement was conducted to check the pinhole position errors of a carrier that was produced at an actual industrial site. A strain gauge was attached to the planet pin. The effect of planet pin manufacturing errors and the difference in errors according to the installation position of the strain gauge were examined. The effect of carrier pinhole position errors on planetary gearbox load sharing was examined for different input torques. As the input torque increased, load sharing was improved. When the test torque rate was 100%, the load sharing factor was 1.42 for the strain gauge under compression and 1.34 for the strain gauge under tension. These results were similar to the load sharing factor indicated in the design standards for wind turbine gearbox designs.