The reasons of casing scraping of gear pump were analyzed based on stress analysis. The problem of radial direction casing scraping was solved by using offset method of moving one gear and the offset formulas were given. The method of improving lubricating condition for pump cover was adopted to avoid axial casing scraping. This method has been used on trial at the work site with very good effect.%从受力分析角度出发分析齿轮油泵刮壳的原因.采用使齿轮偏移一个量的方法解决径向刮壳问题并给出偏移量的计算公式,采用改善泵盖润滑条件的方法避免轴向刮壳.该方法已在工地上试用,效果很好.
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