STUDY OF LAST STAGE PINION DEVICE WITH SELF-ALIGNING OF HEAVY LOAD AND LOW SPEED DRIVE

摘要

One of principal characters of heavy load and low speed drive is severe bias load of last stage. The accumulation of these deficiency will lead to abnormal engagement of last stage gear pair and bias load . The result must be severe wear or break off of gear teeth. In order to solve the problem, the paper propounds the idea of last stage pinion device with self-aligning of heavy load and low speed drive. When Last stage drive of DMGH drive works by means of this mode, the pinion can revolute round itself symcenter along spherical face and change itself position by its deflection along with position change of big gear wheel. Though its self-aligning range is limited, they still can meet requirement of general drive under heavy load and low speed. So, from the full exposition of the idea of design, kinematics analysis, relative merits and applications, based on the mode that pinion can revolute round a certain point along spherical face, Some designs have been posed in the paper: a device with the spherical sliding bearing set on both sides of a shaft and a device with spherical sliding bearing set on middle of a shaft. Through the practice, The pinion device with self-aligning which is studied in this paper can fit especially for the case of severe bias load of last stage, or wider tooth width to improve carrying capacity, it is proved to be reliable and effective, and has higher application value.