针对高速逆流色谱仪行星传动机构平稳运行的需要，通过对传统型预制平衡孔设计算法的分析和MATLAB仿真软件验证，提出了一种改进型预制平衡孔设计算法。将改进型预制平衡孔设计算法应用于色谱仪行星机构分离柱的平衡孔设计，并结合分离柱的残余不平衡量进行了转子的平衡孔结构建模。通过动平衡试验对比了两种平衡孔布局方式的行星机构平衡效果，动平衡试验数据表明，改进平衡孔结构的分离柱的不平衡量减少率比传统平衡孔结构的分离柱高出9.9％，改进平衡孔结构的行星机构的不平衡量减少率比传统平衡孔结构的行星机构高出18.2％，改进平衡孔结构的行星机构的平衡精度相比于传统平衡孔结构的行星机构有了明显的提升。

To make high-speed counter-current chromatograph’s planetary transmission mechanism run stably, through the analysis of traditional prefabricated balance hole design algorithm and the verification of simulation software Matlab, a modified prefabricated balance hole design algorithm was proposed. The modified prefabricated balance hole design algorithm was applied in the balance hole design of chromatograph planetary mechanism separation column. Combined with residual unbalance of separation column, the balance hole structure of rotor was modeled. Dynamic balance tests were conducted to compare balance effects of planetary mechanism using two balance hole layouts. The dynamic balance test data showed that the unbalance reduction rate of separation column with modified balance hole structure is 9.9% higher than that of separation column with traditional balance hole structure, the unbalance reduction rate of planetary mechanism with modified balance hole structure is 18.2% higher than that of planetary mechanism with traditional balance hole structure; the balance accuracy of planetary mechanism with modified balance hole structure is significantly improved compared with that of planetary mechanism with traditional balance hole structure.