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为了实现齿轮磨损状况的不拆卸诊断，提出了一种用综合间隙角来分析判断各挡齿轮及键槽磨损的方法。通过对各挡传动比及齿侧间隙等对综合间隙角影响关系的分析，得出了各挡综合间隙角与齿侧间隙的定量关系式，并将各挡综合间隙角分为４个级别标准，测得各挡的综合间隙角与标准比较，即可判断齿轮或键槽的磨损情况。提出了相应的综合间隙角的检测方法并研制了检测仪器，对使用中的２３台手扶拖拉机齿轮箱各挡的综合间隙角进行了测量和分析，取得了较好的效果。
In order to realize the disassembly diagnosis of gear wear status, a method to analyze wear and tear of each gear and keyway by comprehensive clearance angle is proposed. Based on the analysis of the influence of gear ratio and flank clearance on the comprehensive clearance angle, the quantitative relation between the comprehensive clearance angle and the flank clearance was obtained, and the comprehensive clearance angle of each gear was divided into four levels , Measured the overall clearance angle of each block compared with the standard, you can determine the gear or keyway wear. The corresponding detection method of the integrated clearance angle is put forward and the testing instruments are developed. The comprehensive clearance angles of the gears of the 23 tractor gearboxes in use are measured and analyzed, and good results are obtained.