论文部分内容阅读
出租汽车计价器使用误差标准装置由于主滚轮埋于坑内,上方周边有盖板,按照JJG517-2009《出租汽车计价器》检定规程用(300～400)mm外径千分尺测量主滚轮直径,因受到空间的限制,无法测量。在实际检定工作中,通常采用标准钢卷尺测量主滚轮周长,因受到标准钢卷尺厚度、宽度和结构的影响,不能直接得出周长的实际值,测量结果必须按公式L=l-(πt+
Taximeter using error standard device As the main wheel buried in the pit, there is a cover above the periphery, according to JJG517-2009 “taxi meter” test procedures (300 ~ 400) mm diameter micrometer diameter measurement of the main wheel, as a result of Space constraints, can not measure. In the actual verification work, the standard steel tape measure is usually used to measure the circumference of the main roller. Due to the influence of the thickness, width and structure of the standard steel tape measure, the actual value of the circumference can not be directly obtained. The measurement result must be according to the formula L = πt +