ZL50装载机螺旋锥齿轮断齿原因分析及优化  

Analysis and optimization of gear damage about ZL50 loader spiral bevel gear

作　　者：李连平 安永太 李国伟 陈彦 

机构地区：[1]青海盐湖镁业有限公司,青海格尔木816000

出　　处：《机械》2014年第9期77-80,共4页Machinery

摘　　要：20CrMnTi合金渗碳钢作为ZL50装载机驱动桥螺旋锥齿轮的主要材料,通过考察螺旋锥齿轮的设计参数、产品技术要求、热处理工艺以及1000 h的满负荷试验,分析螺旋锥齿轮断齿原因和明确了齿轮断齿因素。结果表明:齿轮氧含量超标、心部硬度和有效硬化层深度偏低是螺旋锥齿轮断齿的主要因素;增大齿轮齿根圆角半径和轮齿压力角,可提高齿轮齿根弯曲强度;齿轮表面采用强力喷丸处理可增加齿轮表面的接触应力,从而进一步提高齿轮的使用寿命。20CrMnTi Alloy steel as the main material of driving axle spiral bevel gears of ZL50 loader, to investigate the design parameters the technical requirements, heat treatment process and full-load test of 1000h of spiral bevel gear, analysis of tooth fracture reason and broken factors about spiral bevel gear. The results showed： Oxygen content exceed the standard~ the core hardness and effective hardening layer depth low is the main factor that broken teeth of spiral bevel gear; Increase of gear tooth root fillet radius and gear pressure angle can improve the gear tooth bending strength; Gear surface using powerful shot peening treatment can increase the surface of gear contact stress to further improve the service life of the gear.

关 键 词：螺旋锥齿轮 断齿 接触应力 弯曲强度 强力喷丸 

分 类 号：TH132.421[机械工程—机械制造及自动化]