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新闻详情
微耕机的噪声测定及数据处置
时间:2013-09-30 来源:本站 作者:管理员

 
 依据国标的测定位置和方法,中止静态环境噪声和驾驶员位置处噪声的自动测定。将检测数据传送到计算机中,中止自动处置和分析。

 
 JB/T10266.2-2001微型耕耘机实验方法中规则的噪声测定方法有两种:一是有静态环境噪声测定;二是驾驶员操作位置处噪声测定。

 
 
静态环境噪声测定:被试微耕机停放在测试场地中心,声级计传声器置于微耕机驱动轴延长线上,距离被试微耕机纵向中心垂直面7.5m,离地高1.2m处,“A”计权网络和“快”档中止丈量。被试微耕机处于空档状态,发起机预热抵达正常工作温度后,在调速器所限定的最高转速下运转,记载此时的声级计的最大读数;

 
 
驾驶员操作位置处噪声测定:用声级计的“A”计权网络和“慢”档中止丈量,将声级计传声器安放在驾驶员的头盔架上噪声较大的一侧,并使传声器朝前,与眼眉等高,距头盔架中心平面250mm±20mm的耳旁处。中止测试时,微耕机呈最大设计耕深旋耕状态,在每个档位上,发起机油门全开,待其稳定后,读取最大噪声值并测定其行进速度。最后测定微耕机发起机油门全开、空驶速度为4-6km/h 档位的最大空驶噪声值和速度。