Scheme Comparison And Strength Analysis Of Drive System Of Twin Screw Extruder

As a kind of engaged device, twin screw extruder has been gained widespread availability, for its extremely excellent attribute for processing, and twin screw extruder has became the main tendency of market development. Drive system is one of the key part of twin screw extruder, which requires a large torque for output and can endure large axial force. But due to the confining or restricting of center distance, the design and manufacture of the gears, shafts and bearings etc., become more difficult.This paper makes many profound researches on drive system of twin screw extruder. Based on introduce of the researching achievements both in home and abroad, the current situation and future development of drive system of twin screw extruder, a detailed analysis and comparison is put on the drive system and thrust bearing group. Then combined with the design request, a general scheme and thrust bearing design and layout scheme is selected. Then drive system and its accessories design and analysis are accomplished. In this part design and selection of accessories of drive system, calculation of profile modified gears, strengh check of output shaft and calculation of bearing's service life are all involved. Especially, analysis of the coordination of each accessorie of drive system , uniform load structure and gear engaged rigidity are specified involved, also. At last, By using ANSYS 11.0, the finite element analysis of the strain and stress to the key output shaft B in the drive system is completed, and gained the pictures and results of the analysis of the strain and stress status. According to the pictures and results, proper improvements and mpdifications are put forward, in order to improve the proformance of the drive system and increase its server lifeThe researches of this paper can play an important role in the development of the drive system of twin screw extruder and can supply optimized scheme and technical support for maintenance of the drive system. It is a good reference on design and development of like devices.