卷筒聯軸器是(shi)一種新型撓性(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)，主要(yao)用于起重(zhong)設備中起升機構的減速器(qi)輸(shu)出(chu)軸(zhou)(zhou)與(yu)鋼絲繩(sheng)卷(juan)筒(tong)(tong)的聯(lian)(lian)接(jie)，也(ye)適(shi)用于其它類似的既傳(chuan)遞轉矩又承受(shou)徑向載(zai)荷的機械設備，但不能用作(zuo)需承受(shou)軸(zhou)(zhou)向載(zai)荷的傳(chuan)動。卷(juan)筒(tong)(tong)工(gong)作(zuo)時產(chan)生的附加(jia)軸(zhou)(zhou)向載(zai)荷必須由卷(juan)筒(tong)(tong)固定(ding)(ding)支承座承受(shou)，因此(ci)，聯(lian)(lian)軸(zhou)(zhou)器(qi)安裝時必須保(bao)證軸(zhou)(zhou)向定(ding)(ding)位正確。否則卷(juan)筒(tong)(tong)工(gong)作(zuo)時產(chan)生的彈(dan)性(xing)水平位移可能會破壞(huai)聯(lian)(lian)軸(zhou)(zhou)器(qi)的軸(zhou)(zhou)向限位，造成(cheng)聯(lian)(lian)接(jie)失(shi)效，甚至釀(niang)成(cheng)嚴重(zhong)事故。

卷筒聯軸器由(you)帶鼓形(xing)齒(chi)的(de)(de)外(wai)齒(chi)軸(zhou)套(tao)、帶聯接(jie)法蘭和(he)內齒(chi)圈(quan)的(de)(de)外(wai)套(tao)、帶外(wai)球面的(de)(de)承(cheng)(cheng)載環(huan)、端蓋和(he)密(mi)封(feng)圈(quan)等(deng)組(zu)成(cheng)，并設(she)有定位磨損指針(zhen)、潤滑油孔(kong)和(he)通氣孔(kong)等(deng)。外(wai)齒(chi)軸(zhou)套(tao)和(he)外(wai)套(tao)構成(cheng)的(de)(de)鼓形(xing)齒(chi)式聯軸(zhou)器傳遞(di)驅動(dong)功(gong)率, 而由(you)承(cheng)(cheng)載環(huan)的(de)(de)外(wai)球面和(he)外(wai)套(tao)的(de)(de)內承(cheng)(cheng)載面形(xing)成(cheng)的(de)(de)接(jie)觸副構成(cheng)自(zi)動(dong)調位的(de)(de)球面軸(zhou)承(cheng)(cheng)，承(cheng)(cheng)受徑向載荷。卷筒(tong)用聯軸(zhou)器的(de)(de)內、外(wai)齒(chi)嚙合(he)在油浴中工作,通過(guo)內外(wai)端蓋、密(mi)封(feng)圈(quan)防止潤滑脂泄(xie)漏。