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EQ140汽车变速箱由于采用同步器结构,换档轻便,无冲击,使用方便。但经过调查发现,在林区、矿山、大山区使用的汽车,一档齿轮有早期损坏的现象,最低寿命只有2.5～3万公里,其损坏形式均是齿根处弯曲疲劳折断。为了彻底解决这个质量问题,被总厂列为十大产品质量攻关项目之一。为此,我厂有关部门的同志们做了大量工作,较大幅度的提高了变速箱一档齿轮的使用寿命。现将攻关工作介绍如下。
EQ140 car transmission due to the use of synchronizer structure, shift light, no impact, easy to use. However, after investigation, it was found that in the vehicles used in forest areas, mines and mountainous areas, the gear of the first gear has the phenomenon of early damage, and the minimum life is only 2.5 to 30,000 km. The damage form is the bending fatigue fracture at the tooth root. In order to completely solve this quality problem, the plant was listed as one of the top ten product quality research projects. To this end, my factory comrades departments have done a lot of work, a substantial increase in gearbox a gear life. Now the research work is as follows.