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使用条件下农业机械可靠性试验、分析和评定,通常从以下几方面进行。 1.收集可靠性试验数据、资料 按规定工作量完成可靠性试验的样机,应认真收集试验期内的资料。其内容包括:各种时间消耗;故障次数、部位及排除方法;零部件损坏程度、数量;材料和劳动消耗以及发生故障时的作物长势、自然条件和相应的使用因素等。 2.可靠性分析及评定指标 农业机械可靠性分析及评定包括定量分析和定性分析两方面,二者缺一不可。 定量分析包括以下几个指标: (1) 可靠性系数K
The reliability test, analysis and assessment of agricultural machinery under use conditions are usually conducted in the following aspects. 1. Collecting Reliability Test Data and Materials If a prototype of the reliability test is completed according to the specified workload, the data during the test period should be carefully collected. The contents include: various time consumption; number of failures, locations, and elimination methods; degree of damage and quantity of parts and components; material and labor consumption, as well as crop conditions, natural conditions, and corresponding use factors at the time of failure. 2. Reliability Analysis and Evaluation Indicators Reliability analysis and assessment of agricultural machinery include both quantitative analysis and qualitative analysis. Both are indispensable. Quantitative analysis includes the following indicators: (1) Reliability coefficient K