Vibration Characteristics of Power Circulation Type Planetary Gear Test Rig

Abstract

A star-type highspeed planetary gear test rig have been developed. It has a power circulating structure, and the planetary gears are supported with flexible pins. The pin loads and the tooth root stresses are measured, and the following conclusions were reached. (1) The test capacity of the prototype is 10000 min-1 and the maximum torque was 287 Nm on the sun gear shaft. (2) The dynamic load of the flexible pin was about 13% of the DC component of the pin load. (3) At the gear resonance speed, the amplitude of the tooth root stress rised to 2.1 times compared with the low speed.