皮帶輸送機(ji)的滾(gun)(gun)(gun)筒(tong)選(xuan)型設(she)計包括(kuo)滾(gun)(gun)(gun)筒(tong)布置形式,滾(gun)(gun)(gun)筒(tong)種類選(xuan)擇,滾(gun)(gun)(gun)筒(tong)受力分析,滾(gun)(gun)(gun)筒(tong)直(zhi)徑選(xuan)擇等(deng)。
皮帶輸送(song)機的滾(gun)筒(tong)(tong)選型(xing)設(she)計包括滾(gun)筒(tong)(tong)布置形(xing)式,滾(gun)筒(tong)(tong)種(zhong)類(lei)選擇(ze),滾(gun)筒(tong)(tong)受力(li)分析,滾(gun)筒(tong)(tong)直徑選擇(ze)等。
首(shou)先要確定(ding)皮帶(dai)輸(shu)送機滾筒的直(zhi)徑,這決(jue)定(ding)于輸(shu)送機的用途,滾筒的用途,膠帶(dai)類(lei)型、層數(shu)、鋼絲直(zhi)徑,輸(shu)送帶(dai)的抗拉強(qiang)度(du),包膠面壓以及輸(shu)送帶(dai)許用強(qiang)度(du)利用車等因素(su)。
傳(chuan)(chuan)動滾(gun)(gun)筒(tong)(tong)組(zu)和(he)承受輸(shu)送帶高張(zhang)力的(de)滾(gun)(gun)筒(tong)(tong)組(zu),包括輸(shu)送機頭(tou)部(bu)和(he)尾(wei)部(bu)的(de)主(zhu)傳(chuan)(chuan)動滾(gun)(gun)筒(tong)(tong)組(zu),傳(chuan)(chuan)遞全張(zhang)力的(de)滾(gun)(gun)筒(tong)(tong),卸(xie)料小(xiao)車上的(de)改向(xiang)(xiang)(xiang)滾(gun)(gun)筒(tong)(tong),尾(wei)部(bu)驅動時的(de)終端(duan)頭(tou)部(bu)滾(gun)(gun)筒(tong)(tong)等。在輸(shu)送機返回運行(xing)的(de)張(zhang)力較(jiao)低的(de)改向(xiang)(xiang)(xiang)滾(gun)(gun)筒(tong)(tong),如終端(duan)尾(wei)部(bu)滾(gun)(gun)筒(tong)(tong)被制動,下行(xing)輸(shu)送機的(de)終端(duan)頭(tou)部(bu)滾(gun)(gun)筒(tong)(tong)組(zu)一張(zhang)緊(jin)裝置的(de)改向(xiang)(xiang)(xiang)滾(gun)(gun)筒(tong)(tong)組(zu)和(he)彎向(xiang)(xiang)(xiang)滾(gun)(gun)筒(tong)(tong)。
滾筒直徑(jing)不包括(kuo)由橡膠、陶瓷或類(lei)似材質制作的(de)(de)承受磨損的(de)(de)保護層(ceng),凸(tu)面滾筒的(de)(de)最小直徑(jing)至少必(bi)須等于規定的(de)(de)最小值。
影響(xiang)滾筒直徑的因素包括附加彎(wan)(wan)曲應力(li),輸送(song)帶(dai)(dai)許(xu)用強度(du)利用率(lv),輸送(song)帶(dai)(dai)承受彎(wan)(wan)曲載荷的頻率(lv),輸送(song)帶(dai)(dai)表面的面比壓,使(shi)用地點與條(tiao)件,覆(fu)蓋膠或(huo)其上(shang)的高花紋的變形量。
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