Study on load equilibrating and vibration reducing of three-ring gear reducer

摘要

A new-style transmission pattern-two stage three-ring gear reducer (TRGR), which eccentric phase difference between middle ring plate and side ring plates is 180° and mass of middle ring plate is twice of that of side ring plate, is put forward in this paper. Analysis of internal gear ring plate inertial force and inertial torque and primary manufacturing and assembling errors that affect on load distribution between ring plates are presented. A new-style load equilibrating mechanism-elastic load equilibrating metal ring (ELEMR) which are placed between bearing outer ring and bearing seat of first input shaft and secondary output shaft is put forward. Experimental studies are performed on load equilibrating and vibrating reducing of original reducer without ELEMR and modified reducer with ELEMR. The experimental result indicates that it's evident in load equilibrating and vibration reducing effectiveness. Load equilibrating non-uniform coefficient (LDNC) K{sub}p changes form 1.314 of original reducer to 1.073 of modified reducer. Under rated torque and rated speed, radial vibration acceleration of secondary output shaft bearing seat changes from 26.6m/s{sup}2 of original reducer to 3.35m/s{sup}2 of modified reducer, radial vibration velocity of secondary output shaft bearing seat change from 9.40mm/s of original reducer to 1.19mm/s of modified reducer.