1)承載托輥組安裝位置與輸送機中心線的垂直度誤差較大,導致膠帶在承載段向一則跑偏,見圖1,膠(jiao)帶(dai)向(xiang)前(qian)運(yun)行(xing)時(shi)給(gei)托(tuo)輥(gun)一(yi)個(ge)向(xiang)前(qian)的(de)牽(qian)引(yin)力(li)下(xia)。這(zhe)個(ge)牽(qian)引(yin)力(li)分(fen)解(jie)為(wei)使(shi)托(tuo)輥(gun)轉(zhuan)動(dong)的(de)分(fen)力(li)和(he)一(yi)個(ge)橫(heng)向(xiang)分(fen)力(li),這(zhe)個(ge)橫(heng)向(xiang)分(fen)力(li)使(shi)托(tuo)輥(gun)軸(zhou)向(xiang)竄(cuan)動(dong),由(you)於(yu)托(tuo)輥(gun)支(zhi)架(jia)的(de)固(gu)定(ding)托(tuo)輥(gun)是(shi)無(wu)法(fa)軸(zhou)向(xiang)竄(cuan)動(dong)的(de),它(ta)必(bi)然(ran)就(jiu)會(hui)對(dui)膠(jiao)帶(dai)產(chan)生(sheng)一(yi)個(ge)反(fan)作(zuo)用(yong)力(li),它(ta)使(shi)膠(jiao)帶(dai)向(xiang)另(ling)一(yi)側(ce)移(yi)動(dong),從(cong)而(er)導(dao)致(zhi)了(le)跑(pao)偏(pian)。
第一種方法就是在製造時托輥組的兩側安裝孔都加工成長孔,以便進行調整。具體調整方法見圖2,具體方法是膠帶偏向哪一側,托輥組的哪一側朝膠帶前進方向前移,或另外一側後移。如圖2所示膠帶向上方向跑偏則托輥組的下位處應當向左移動,托輥組的上位處向右移動。
第二種方法是安裝調心托輥組,調心托輥組有多種類型,如中間轉軸式、四連杆式、ligunshideng,qiyuanlishicaiyongzudanghuotuogunzaishuipingmianneifangxiangzhuandongzudanghuochanshenghengxiangtuilishijiaodaizidongxiangxindadaotiaozhengjiaodaipaopiandemude,qishouliqingkuanghechengzaituogunzupianxieshouliqingkuangxiangtong。yibanzaidaishishusongjizongchangdujiaoduanshihuodaishishusongjishuangxiangyunxingshicaiyongcifangfabijiaoheli,yuanyinshijiaoduandaishishusongjigengrongyipaopianbingqieburongyitiaozheng。erchangdaishishusongjizuihaobucaiyongcifangfa,yinweitiaoxintuogunzudeshiyonghuiduijiaodaideshiyongshoumingchanshengyidingdeyingxiang。
2)頭部驅動滾筒或尾部改向滾筒的軸線與輸送機中心線不垂直,造成膠帶在頭部滾筒或尾部改向滾筒處跑偏。如圖3所示,滾筒偏斜時,膠帶在滾筒兩側的鬆緊度不一致,沿寬度方向上所受的牽引力F。也就不一致,成遞增或遞減趨勢,這樣就會使膠帶附加一個向遞減方向的移動力,導致膠帶向鬆側跑偏,即所謂的“跑鬆不跑緊”。
其調整方法為:對(dui)於(yu)頭(tou)部(bu)滾(gun)筒(tong)如(ru)膠(jiao)帶(dai)向(xiang)滾(gun)筒(tong)的(de)右(you)側(ce)跑(pao)偏(pian),則(ze)右(you)側(ce)的(de)軸(zhou)承(cheng)座(zuo)應(ying)當(dang)向(xiang)前(qian)移(yi)動(dong),膠(jiao)帶(dai)向(xiang)滾(gun)筒(tong)的(de)左(zuo)側(ce)跑(pao)偏(pian),則(ze)左(zuo)側(ce)的(de)軸(zhou)承(cheng)座(zuo)應(ying)當(dang)向(xiang)前(qian)移(yi)動(dong),相(xiang)對(dui)應(ying)的(de)也(ye)可(ke)將(jiang)左(zuo)側(ce)軸(zhou)承(cheng)座(zuo)後(hou)移(yi)或(huo)右(you)側(ce)軸(zhou)承(cheng)座(zuo)後(hou)移(yi)。尾(wei)部(bu)滾(gun)筒(tong)的(de)調(tiao)整(zheng)方(fang)法(fa)與(yu)頭(tou)部(bu)滾(gun)筒(tong)剛(gang)好(hao)相(xiang)反(fan)。經(jing)過(guo)反(fan)複(fu)調(tiao)整(zheng)直(zhi)到(dao)膠(jiao)帶(dai)調(tiao)到(dao)較(jiao)理(li)想(xiang)的(de)位(wei)置(zhi)。在(zai)調(tiao)整(zheng)驅(qu)動(dong)或(huo)改(gai)向(xiang)滾(gun)筒(tong)前(qian)最(zui)好(hao)準(zhun)確(que)安(an)裝(zhuang)其(qi)位(wei)置(zhi)。
對於這種情況,解決的方法就是清理幹淨滾筒表麵粘煤,加工誤差和磨損不均的就要更換下來重新加工包膠處理。
4)zhuanzaidianchuluoliaoweizhibuzhengzaochengjiaodaipaopian。zhuanzaidianchuwuliaodeluoliaoweizhiduijiaodaidepaopianyoufeichangdadeyingxiang,youqizaishangtiaoshusongjiyubentiaoshusongjizaishuipingmiandetouyingchengchuizhishiyingxianggengda。tongchangyingdangkaolvzhuanzaidianchushangxialiangtiaojiaodaijidexiangduigaodu。xiangduigaoduyuedi,wuliaodeshuipingsudufenliangyueda,duixiacengjiaodaidecexiangchongjiliF。也越大,同時物料也很難居中。使在膠帶橫斷麵上的物料偏斜,衝擊力F。的水平分力F,最終導致膠帶跑偏。如果物料偏到右側,則膠帶向左側跑偏,反之亦然。
對於這種情況下的跑偏,在設計過程中應盡可能地加大兩條輸送機的相對高度。在受空間限製的帶式輸送機的上下漏鬥、導dao料liao槽cao等deng件jian的de形xing式shi與yu尺chi寸cun更geng應ying認ren真zhen考kao慮lv。一yi般ban導dao料liao槽cao的de寬kuan度du應ying為wei膠jiao帶dai寬kuan度du的de五wu分fen之zhi三san左zuo右you比bi較jiao合he適shi。為wei減jian少shao或huo避bi免mian膠jiao帶dai跑pao偏pian可ke增zeng加jia擋dang料liao板ban阻zu擋dang物wu料liao,改gai變bian物wu料liao的de下xia落luo方fang向xiang和he位wei置zhi。
5)膠帶本身的問題,如膠帶使用時間長,產生老化變形、邊bian緣yuan磨mo損sun,或huo者zhe膠jiao帶dai損sun壞huai後hou重zhong新xin製zhi作zuo的de接jie頭tou中zhong心xin不bu正zheng,這zhe些xie都dou會hui使shi膠jiao帶dai兩liang側ce邊bian所suo受shou拉la力li不bu一yi致zhi而er導dao致zhi跑pao偏pian。這zhe種zhong情qing況kuang膠jiao帶dai全quan長chang上shang會hui向xiang一yi側ce跑pao偏pian,最zui大da跑pao偏pian在zai不bu正zheng的de接jie頭tou處chu,處chu理li的de方fang法fa隻zhi有you對dui中zhong心xin不bu正zheng的de膠jiao接jie頭tou重zhong新xin製zhi作zuo,膠jiao帶dai老lao化hua變bian形xing的de給gei予yu更geng換huan處chu理li。
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7)對dui於yu設she計ji有you凹ao段duan的de帶dai式shi輸shu送song機ji,如ru凹ao段duan的de曲qu率lv半ban徑jing過guo小xiao,在zai啟qi動dong時shi如ru果guo膠jiao帶dai上shang沒mei有you物wu料liao,在zai凹ao段duan區qu間jian處chu膠jiao帶dai就jiu會hui彈dan起qi,遇yu到dao大da風feng天tian氣qi時shi還hai會hui將jiang膠jiao帶dai吹chui偏pian,因yin此ci,最zui好hao在zai膠jiao帶dai輸shu送song機ji的de凹ao段duan處chu增zeng設she壓ya帶dai輪lun來lai避bi免mian膠jiao帶dai的de彈dan起qi或huo被bei風feng吹chui偏pian。鬥dou輪lun堆dui取qu料liao機ji的de下xia層ceng穿chuan過guo式shi膠jiao帶dai在zai尾wei車che堆dui料liao狀zhuang態tai時shi就jiu會hui產chan生sheng一yi個ge很hen大da的de凹ao段duan,此ci處chu最zui容rong易yi發fa生sheng跑pao偏pian。如ru下xia層ceng輸shu送song機ji有you機ji架jia下xia沉chen,更geng會hui加jia劇ju膠jiao帶dai的de騰teng空kong範fan圍wei,極ji易yi跑pao偏pian,因yin此ci,在zai設she計ji階jie段duan應ying盡jin可ke能neng地di采cai用yong較jiao大da的de凹ao段duan曲qu率lv半ban徑jing來lai避bi免mian此ci類lei情qing況kuang的de發fa生sheng。
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