1、膠帶跑偏原因
jiaodaipaopiandegenbenyuanyinshiqudongguntongjizhangjinguntongzhijianjiaodailiangcezhanglibujun，shijiaodailiangceduiguntongdeyalibuyizhi。jiaodaizaiguntongshangraoguodouyoubianxingjidahuaxianxiang，qichengduyujiaodaiduiguntongdeyaliyouguan，youyuyalibuyiyang，dahuachengdubuxiangtong，jiaodaideshenchangbianxingyebuxiangtong。zhanglijiaodadeyicejiaodaibianxingjiaoda，dahuachengduyejiaodi，qiyundongsudujiujiaokuai，yincigaicejiaodaihuifashengtongfangxiangdehengyiyundong，cihengyijinyibudaozhijiaodailiangcedezhangligengjiabujun，zhouerfushixingchengexingxunhuan，shijiaodaihengyigengjiayanzhong，jichuxianjiaodaipaopian。paopianshijiaodaizailigunshangjuliemocadaozhijiaodaishiyongshoumingdafudujiangdi，congerzengjialeshengchanchengben。jiaodaidepaopianguilvshi：跑緊不跑鬆，即膠帶兩側的鬆緊度不一時，膠帶向緊的一側移動；跑高不跑低，即如果膠帶兩側的高低不一樣，膠帶向高的一側移動；跑後不跑前，即如果托輥支架等裝置沒有安裝在膠帶運行方向的垂直截麵上，而是一端在前，一端在後（沿膠帶運行方向），則膠帶會向後端移動。
張zhang緊jin滾gun筒tong與yu驅qu動dong滾gun筒tong的de軸zhou線xian不bu平ping行xing是shi導dao致zhi膠jiao帶dai兩liang側ce張zhang力li不bu同tong的de明ming顯xian原yuan因yin。此ci外wai，膠jiao帶dai橫heng向xiang厚hou度du不bu均jun勻yun以yi及ji張zhang緊jin滾gun筒tong兩liang側ce軸zhou承cheng摩mo擦ca係xi數shu不bu同tong、兩側托輥軸承摩擦係數不同、所運輸的物料發生偏載等都會使膠帶兩側的張力不勻。另外還有一些其他不明顯的原因導致張力不均的現象發生。
2、小型帶式輸送機的改進措施
(1)校準張緊滾筒與驅動滾筒軸線間的平行度
任ren何he帶dai式shi輸shu送song機ji張zhang緊jin滾gun筒tong與yu驅qu動dong滾gun筒tong軸zhou線xian間jian都dou有you程cheng度du不bu一yi的de不bu平ping行xing現xian象xiang，即ji使shi出chu廠chang時shi設she備bei的de平ping行xing度du符fu合he規gui定ding，但dan運yun行xing中zhong的de振zhen動dong會hui導dao致zhi原yuan有you滾gun筒tong軸zhou承cheng支zhi座zuo產chan生sheng位wei移yi而er使shi軸zhou線xian不bu平ping行xing。張zhang緊jin滾gun筒tong與yu驅qu動dong滾gun筒tong間jian距ju離li較jiao遠yuan，應ying利li用yong激ji光guang測ce距ju儀yi測ce得de設she備bei的de平ping行xing度du誤wu差cha並bing加jia以yi校xiao準zhun。校xiao準zhun後hou滾gun筒tong軸zhou承cheng支zhi座zuo的de固gu定ding應ying特te別bie重zhong視shi，否fou則ze設she備bei運yun轉zhuan過guo程cheng中zhong產chan生sheng的de振zhen動dong會hui抵di消xiao前qian麵mian所suo做zuo工gong作zuo的de效xiao果guo。
(2)張緊滾筒應為鼓形結構
根gen據ju膠jiao帶dai會hui朝chao著zhe張zhang力li較jiao大da的de一yi側ce橫heng移yi的de結jie論lun，可ke以yi將jiang張zhang緊jin滾gun筒tong或huo驅qu動dong滾gun筒tong製zhi成cheng中zhong間jian較jiao粗cu兩liang端duan較jiao細xi的de鼓gu形xing結jie構gou，使shi滾gun筒tong對dui膠jiao帶dai保bao持chi一yi定ding的de自zi動dong對dui中zhong性xing能neng。滾gun筒tong中zhong部bu的de凸tu起qi程cheng度du越yue大da，膠jiao帶dai自zi動dong對dui中zhong性xing能neng越yue好hao，但dan膠jiao帶dai中zhong部bu受shou力li也ye越yue大da。理li想xiang的de設she計ji是shi在zai保bao證zheng膠jiao帶dai中zhong部bu受shou力li不bu超chao出chu允yun許xu值zhi的de前qian提ti下xia使shi滾gun筒tong中zhong部bu的de凸tu起qi程cheng度du大da一yi些xie。這zhe需xu要yao較jiao為wei複fu雜za的de力li學xue計ji算suan，有you待dai進jin一yi步bu研yan究jiu。
(3)滾筒兩側安裝隨動式斜坡擋板
guntongliangceanzhuangsuidongshixiepodangbankeduijiaodaichanshengjiaomingxiandeduizhongli，dangjiaodaifashenghengyibingyapodangbanshi，dangbankechanshengshijiaodaihuidaozhengqueweizhideduizhongli，hengyichengduyuegao，zeduizhongliyueda。weibimiandangbanduijiaodaichanshengsunhai，bixushidangbanyuguntongyiqizhuandong。dangbandecemianyingyouyidingpoduyichanshenggenghaodezidongjiupianzuoyong。poduzhiyingshidang，podutaidouduijiaodaidesunshangjiaodaqiejiupianfanweijiaozhai，poduguohuanzechanshengdeduizhonglijiaoxiao。
3、大型帶式輸送機的糾偏措施
對於較大型帶式輸送機，上述措施雖有一定效果，但因輸送機運行速度快、負載大、張緊滾筒與驅動滾筒相距遙遠等，使糾偏更困難。
youziliaotichudianzijiupiandeshexiang，jianzhuangchuanganqitanzhijiaodaihengyidecanshu，tongguotiaojieligundeweizhi，qiangxingjiangpianlidejiaodaituihuizhengquedeweizhi。zhezhongfangfakenengshijiaodaishoudaojiaodadeshanghai，yinerqituiguangshoudaoyidingdexianzhi。
以解決膠帶兩側的拉力不均為糾偏的出發點，可提出以下設想：把驅動滾筒變成左右2部bu分fen，每mei一yi部bu分fen均jun有you自zi己ji的de驅qu動dong電dian機ji。一yi部bu分fen用yong普pu通tong電dian機ji通tong過guo減jian速su器qi直zhi接jie驅qu動dong滾gun筒tong，另ling一yi部bu分fen由you變bian頻pin電dian機ji驅qu動dong。在zai膠jiao帶dai的de一yi側ce安an裝zhuang位wei移yi傳chuan感gan器qi，當dang膠jiao帶dai發fa生sheng橫heng移yi時shi，傳chuan感gan器qi捕bu捉zhuo到dao其qi運yun動dong方fang向xiang及ji幅fu度du，單dan片pian計ji算suan機ji接jie受shou到dao相xiang應ying信xin號hao會hui直zhi接jie調tiao整zheng變bian頻pin電dian機ji的de轉zhuan速su。圖tu2左(zuo)邊(bian)是(shi)普(pu)通(tong)電(dian)機(ji)驅(qu)動(dong)的(de)滾(gun)筒(tong)，膠(jiao)帶(dai)發(fa)生(sheng)向(xiang)左(zuo)偏(pian)移(yi)，說(shuo)明(ming)膠(jiao)帶(dai)左(zuo)側(ce)張(zhang)力(li)較(jiao)大(da)，且(qie)左(zuo)側(ce)的(de)運(yun)行(xing)速(su)度(du)更(geng)高(gao)，此(ci)時(shi)位(wei)移(yi)傳(chuan)感(gan)器(qi)將(jiang)膠(jiao)帶(dai)左(zuo)移(yi)的(de)幅(fu)度(du)及(ji)方(fang)向(xiang)信(xin)號(hao)傳(chuan)送(song)到(dao)單(dan)片(pian)計(ji)算(suan)機(ji)，計(ji)算(suan)機(ji)改(gai)變(bian)變(bian)頻(pin)器(qi)的(de)控(kong)製(zhi)電(dian)壓(ya)，使(shi)右(you)側(ce)驅(qu)動(dong)電(dian)機(ji)轉(zhuan)速(su)提(ti)高(gao)，反(fan)之(zhi)亦(yi)然(ran)。為(wei)使(shi)傳(chuan)感(gan)器(qi)不(bu)必(bi)每(mei)次(ci)開(kai)機(ji)校(xiao)對(dui)零(ling)位(wei)，位(wei)移(yi)傳(chuan)感(gan)器(qi)可(ke)采(cai)用(yong)絕(jue)對(dui)編(bian)碼(ma)形(xing)式(shi)的(de)角(jiao)位(wei)移(yi)傳(chuan)感(gan)器(qi)，通(tong)過(guo)杠(gang)杆(gan)使(shi)膠(jiao)帶(dai)的(de)橫(heng)移(yi)變(bian)成(cheng)編(bian)碼(ma)器(qi)的(de)角(jiao)位(wei)移(yi)。
安裝電子糾偏係統後，仍需注意張緊滾筒與驅動滾筒軸線的相互平行，兩邊的電機、減速器及滾筒應完全對稱，斜坡形擋板也是必要的。實踐證明這些措施有明顯的防偏及糾偏效果。
shijiyunxingzhong，jiaodailiangcezhanglidebianhuaxuyaojingguoyidingshijiandeleijicainengdaozhijiaodaichuxianmingxiandehengyi，gugaixitongdefanyingsudubukuai，qijiupiankongzhimoshicaiyongbilikongzhijike。zhezhongkongzhimoshijiandanshiyong，youqishiyongyuxiangyingbukuaidechanghe。
4、結束語
由於變頻器成本較高，上述自動糾偏係統的造價較高。隨著國內變頻器產品質量的提高，其價格會顯著下降，該係統會更經濟、適用。
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