橋式起重機多質量扭轉係統原理介紹

橋(qiao)式(shi)起(qi)重(zhong)機(ji)的(de)傳(chuan)動(dong)機(ji)構(gou)是(shi)多(duo)質(zhi)量(liang)的(de)扭(niu)轉(zhuan)係(xi)統(tong)。但(dan)理(li)論(lun)計(ji)算(suan)和(he)試(shi)驗(yan)測(ce)定(ding)均(jun)表(biao)明(ming)，為(wei)了(le)估(gu)算(suan)機(ji)構(gou)強(qiang)度(du)計(ji)算(suan)的(de)最(zui)大(da)載(zai)荷(he)，一(yi)般(ban)講(jiang)傳(chuan)動(dong)機(ji)構(gou)簡(jian)化(hua)為(wei)雙(shuang)質(zhi)量單自由度係統已能滿足工程精度的要求。為了解題簡單，也可將阻尼略去。

qiaoshiqizhongjichuandongjigoujianhuaweishuangzhiliangdanziyouduxitongdeyundongweifenfangcheng。youyuyinyonglexiangduizuobiao
，shuangzhiliangxitongdeziyoudubianweiyi。fangchengjiedexingshijuedingyujilijizuzhuanjudebianhuaxingshi。qiaoshiqizhongjizuzhuanjuyibankeyirenweishibubiande。suishijianbianhuadexingshiqujueyujigouyuandongjidetexing。

若驅動是交流繞線式電動機，一般啟動轉矩是隨機構速度增加而線性地減小了；ruoweidiandongjiqudong，namejigoudeqidongshiyikaojieruliheqi。zheshiqudongzhuanjushisuishijiandezengjiaerzengchangde，zengchangdeshijianjuedingyuliheqidejierusudu。weilejianhuaqiaoshiqizhongjijigoudongzaihedejishu
，keyibaqikanzuoweijieyuede，jiushishuojigouzaiqidongshunjianshoudaomouyidongzhuanjusuihoutabaochibubian。

由於轉動係統扭轉振動的固有頻率較高，因此扭轉振動的轉矩達到最大值時間很短
，一般是機構啟動時間的十分之一或幾十分之一。

yinci
，jiadingqiaoshiqizhongjizaizheduanshijianneijililibubianerdailaidewuchashibudade，duijiaoliuraoxianshidiandongjilaishuo

，ancijiadinggusuanzaihepiandaxie。dangjigouyongmocaliheqiqidongshi，anzhixianzengchang。ruoansuidiandongjizhuansubianhuaqiujie，kededaojiaojingquedejieguo。