农机设备维修质量评价方法的研究

A Study on Evaluating Maintenance Quality of Agricultural Machinery

传统的维修质量评价方法与现代的质量观念不相适应 ,用可靠性参数指标评价由固定维修服务机构(或个体 )长期承担的设备 (尤其是大型拖拉机 )维修质量是合理的、可行的。同时给出可靠性评价指标参数 :平均首次故障时间、平均故障间隔时间、修后可用度和可靠性评定值 ,并且通过样本实验进行了验证。在可靠性综合评定值 Q的表达式中综合考虑了 3个单项指标 ,以上 4项可靠性指标完全可以衡量农机设备的维修质量。

The traditional way of evaluating the maintenance quality of an agricultural machinery is not suitable for the modern idea of quality. It is reasonable and practicable to evaluate an equipment (especially a large tractor) with the reliable parameter index. The reliable indexes of evaluating denote mean time to first failure( T MTTFF ), mean time between failure( T MTBF ), availability( A ), and the value of evaluating reliability( Q ). Other three isolative indexes are considered in the formula of reliable comprehensive value Q . According to the sample tests, the study proved that the four indexes could be used to evaluate the maintenance qualities of agricultural machinery and had some certain theoretical and practical values.