汽车前轮后轮互换之后,还需要做四轮定位和动平衡吗???给点建议
推荐回答(5个)
汽车前轮后轮互换之后,需要做四轮定位和动平衡。车辆出现跑偏、转向精度变差,更换维修过悬挂、转向等系统,出现严重吃胎现象,需要做四轮定位。
动平衡通过加装平衡块来矫正轮胎和轮毂的配置平衡,保证轮胎平顺行驶,使车辆高速行驶时更平稳安全。一般情况下,更换维修过轮胎、轮毂后,都应该做动平衡。但如果发生了事故碰撞,钢圈表面存在变形或者裂纹的话,通过动平衡是无法恢复的。一般来说,动平衡测量超过100克配重的轮毂已经属于严重变形,不建议做动平衡恢复。
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扩展资料
在机器制造或维修中,动平衡成为一道工序。转子转动时产生的不平衡量是因转子各微段的质心不严格处于回转轴线上引起的。各微段因质心偏离回转轴线而产生的离心力都垂直于回转轴线。通过力的合成可把离心力系合成为少数的集中力,其方向仍垂直于轴线。
一般说,至少要用分别作用于两个横截面上的两个集中力才能代表原来的离心力系。若这两个集中力刚好形成力偶,则原来的不平衡量在转子不旋转时是无法察觉和测量的;旋转时,力偶才形成横向干扰并引起转子的振动。这种不平衡的效应只有在旋转的动态中才能察觉和测量,所以需要进行动平衡。
与此相对的静平衡是指当转子的质量很集中以致可以看作一个垂直于回转轴线的不计厚度的薄盘时,不需旋转就能进行的平衡。其作法是将转子水平放置,偏重的一边受重力作用会垂到下方,设法调整转子质心的位置,使之位于回转轴线上。
在测出不平衡的位置和大小后,或是直接将它去掉,或是在它的对称方向加上和它相应的质量来平衡它的效应,即通过去重或配重完成动平衡。
我告诉你啊,前后轮倒胎为什么不做平衡啊,你直接做平衡四个轮,顺便就完成倒胎了,还不用花钱,省钱了,对车也好啊。在倒胎的时候顺便看看轮胎磨损状况,再决定做不做定位,在加上你平时开车的状况。其实你做前后轮倒胎的这个周期,是你做平衡和定位的做好周期,综合算起来会比较划算。这是在花费上做的分析。我一说就太多了,高速行驶和市里跑,完全是两个不同的方案,自己上网查查。你也可以继续问我
四轮定位最好是每年都做一次,对车的安全性能和减少轮胎的磨损有好处。前后轮互换两个前轮需要做动平衡,四轮定位基本不需要做。
动平衡要做,不然可能会出现行使中方向盘发抖。
定位看是否跑偏或者吃胎而定,(一般4到5万公里做一次)
前后轮交叉互换,要做四轮定位,动平衡不用做。
轮胎动平衡要做补胎后才需要做的。
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