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五金知识:震动产生SKF万向节轴承的故障原因

  SKF的故(gu)障占(zhan)故(gu)障的较(jiao)大(da)比重由(you)于损(sun)坏(huai)造成(cheng)的损(sun)失(shi)相(xiang)当严重‚运行中的电(dian)(dian)动(dong)(dong)(dong)(dong)机(ji)本来就发出各种(zhong)声(sheng)音和振动(dong)(dong)(dong)(dong)‚如发现有呵击(ji)声(sheng)、滑(hua)动(dong)(dong)(dong)(dong)声(sheng)、金(jin)属声(sheng)‚温度明显(xian)升高(gao)等‚既与平时(shi)运行中比较(jiao)感(gan)到(dao)有差异时(shi)‚就必须查明原因(yin)‚是(shi)(shi)SKF轴承(cheng)引起的?还是(shi)(shi)其他故(gu)障引起的。SKF轴承(cheng)电(dian)(dian)动(dong)(dong)(dong)(dong)机(ji)轴承(cheng)维护主(zhu)要是(shi)(shi)靠及(ji)(ji)(ji)时(shi)定(ding)期的更换润(run)滑(hua)脂(zhi)(zhi)‚SKF电(dian)(dian)动(dong)(dong)(dong)(dong)机(ji)轴承(cheng)为。滚(gun)动(dong)(dong)(dong)(dong)轴承(cheng)用润(run)滑(hua)脂(zhi)(zhi)润(run)滑(hua)‚润(run)滑(hua)的目的是(shi)(shi)阻止轴承(cheng)表面(mian)在(zai)滚(gun)动(dong)(dong)(dong)(dong)及(ji)(ji)(ji)滑(hua)动(dong)(dong)(dong)(dong)中金(jin)属对金(jin)属的直接接触以及(ji)(ji)(ji)阻止轴承(cheng)表面(mian)的腐蚀。电(dian)(dian)动(dong)(dong)(dong)(dong)机(ji)轴承(cheng)采(cai)用的润(run)滑(hua)脂(zhi)(zhi)需要定(ding)期更换新(xin)鲜的润(run)滑(hua)脂(zhi)(zhi)‚并保持电(dian)(dian)动(dong)(dong)(dong)(dong)机(ji)滚(gun)动(dong)(dong)(dong)(dong)轴承(cheng)的运行温度低(di)于90℃‚以使润(run)滑(hua)脂(zhi)(zhi)达到(dao)预期的正常(chang)寿命(ming)。

  小局(ju)部SKF轴承滚道和(he)滚动体可能会受(shou)损(sun)。运行中(zhong)(zhong)(zhong)‚局(ju)部损(sun)坏(huai)由(you)(you)于操(cao)作(zuo)或安(an)装错误。滚过受(shou)损(sun)的轴承部件会产(chan)生一(yi)特定的振(zhen)动频率(lv)。振(zhen)动频率(lv)分(fen)析(xi)可识别出受(shou)损(sun)的轴承部件。应用场所(suo)中(zhong)(zhong)(zhong)的振(zhen)动行为在许多应用中(zhong)(zhong)(zhong)‚轴承的刚度(du)与周围结构的刚度(du)相同。由(you)(you)于这个(ge)特点‚只要正(zheng)确(que)地选择(ze)轴承(包(bao)括(kuo)预负荷和(he)游(you)隙)及其在应用中(zhong)(zhong)(zhong)的配置‚就(jiu)有可能减低应用中(zhong)(zhong)(zhong)的振(zhen)动。

  万向节(jie)轴(zhou)承(cheng)中的滚动轴(zhou)承(cheng)自身不产生噪(zao)音(yin)。通常感觉(jue)到轴(zhou)承(cheng)噪(zao)音(yin)”事实上是轴(zhou)承(cheng)直接(jie)或间接(jie)地与周围结构(gou)产生振动的声音(yin)效应。一般来说。

  噪声(sheng)强度不(bu)大。如滚(gun)动(dong)体内外(wai)圈隐(yin)约(yue)有(you)(you)均匀滚(gun)动(dong)声(sheng)音(测试者听感轻松)‚说明SKF万向节轴承(cheng)运行(xing)正(zheng)常。如听到异常声(sheng)响‚SKF轴承(cheng)发出(chu)均匀而连续(xu)的“咝咝”声(sheng)‚这(zhei)种声(sheng)音由滚(gun)动(dong)体在内外(wai)圈中旋(xuan)转而产生‚包含(han)有(you)(you)与转速无关(guan)的不(bu)规则的金属振动(dong)声(sheng)响。一般(ban)表现为轴承(cheng)内加润(run)滑汕脂量不(bu)足‚应分清原因并处理。

  听到(dao)近似哨的叫声(sheng)(sheng)(sheng)‚夹杂着滚(gun)动体“咕碌咕碌”滚(gun)动声(sheng)(sheng)(sheng)‚说(shuo)明缺少润滑脂(zhi)或油脂(zhi)选(xuan)择不当‚应(ying)清洗(xi)、补(bu)充或更(geng)换合(he)适的润滑脂(zhi)。SKF轴(zhou)承运行在发(fa)出(chu)连续的“哗哗”声(sheng)(sheng)(sheng)中发(fa)出(chu)均匀的周(zhou)期性“嗬罗”声(sheng)(sheng)(sheng)‚这种声(sheng)(sheng)(sheng)音(yin)是由于滚(gun)动体和(he)内(nei)外圈滚(gun)道出(chu)现伤痕、沟(gou)槽、锈蚀斑而引起的。声(sheng)(sheng)(sheng)响的周(zhou)期与万向节轴(zhou)承的转(zhuan)速(su)有对应(ying)的关系(xi)‚应(ying)对SKF轴(zhou)承进(jin)行更(geng)换。

  SKF轴(zhou)(zhou)承圈(quan)有可能与相邻部件(jian)的(de)外(wai)形(xing)相配合而(er)变(bian)形(xing)。如果出现变(bian)形(xing)‚部件(jian)的(de)波(bo)度在轴(zhou)(zhou)承圈(quan)与或传动(dong)轴(zhou)(zhou)之间密配合的(de)情(qing)况下。运行中(zhong)便可能产(chan)生振动(dong)。因此‚把轴(zhou)(zhou)承座和传动(dong)轴(zhou)(zhou)进行机(ji)加工到所需的(de)公差很重(zhong)要。