卷筒聯軸器是一種新(xin)型(xing)撓(nao)性聯軸(zhou)(zhou)器(qi)(qi)，主(zhu)要(yao)用(yong)于(yu)起重(zhong)設(she)備中起升機構的減(jian)速器(qi)(qi)輸出(chu)軸(zhou)(zhou)與鋼絲繩卷筒的聯接(jie)，也(ye)適(shi)用(yong)于(yu)其它類似的既(ji)傳遞轉矩又(you)承(cheng)(cheng)受徑向載荷的機械設(she)備，但不能用(yong)作(zuo)需承(cheng)(cheng)受軸(zhou)(zhou)向載荷的傳動。卷筒工(gong)作(zuo)時產(chan)生(sheng)的附加軸(zhou)(zhou)向載荷必須(xu)由卷筒固定支承(cheng)(cheng)座(zuo)承(cheng)(cheng)受，因此(ci)，聯軸(zhou)(zhou)器(qi)(qi)安裝時必須(xu)保證軸(zhou)(zhou)向定位(wei)(wei)正確。否則卷筒工(gong)作(zuo)時產(chan)生(sheng)的彈性水平位(wei)(wei)移(yi)可能會破壞聯軸(zhou)(zhou)器(qi)(qi)的軸(zhou)(zhou)向限位(wei)(wei)，造成(cheng)聯接(jie)失效，甚至釀成(cheng)嚴重(zhong)事故。

卷筒聯軸器由帶(dai)鼓形齒(chi)(chi)的外(wai)齒(chi)(chi)軸套、帶(dai)聯接法蘭(lan)和(he)(he)內齒(chi)(chi)圈(quan)的外(wai)套、帶(dai)外(wai)球(qiu)面(mian)的承(cheng)載環、端(duan)蓋和(he)(he)密封圈(quan)等組成(cheng)(cheng)(cheng)，并設有定位磨損指針、潤滑油(you)孔和(he)(he)通(tong)氣孔等。外(wai)齒(chi)(chi)軸套和(he)(he)外(wai)套構(gou)成(cheng)(cheng)(cheng)的鼓形齒(chi)(chi)式(shi)聯軸器傳遞驅(qu)動(dong)功(gong)率, 而由承(cheng)載環的外(wai)球(qiu)面(mian)和(he)(he)外(wai)套的內承(cheng)載面(mian)形成(cheng)(cheng)(cheng)的接觸副構(gou)成(cheng)(cheng)(cheng)自(zi)動(dong)調位的球(qiu)面(mian)軸承(cheng)，承(cheng)受徑向載荷。卷筒(tong)用聯軸器的內、外(wai)齒(chi)(chi)嚙合(he)在油(you)浴中工作(zuo),通(tong)過內外(wai)端(duan)蓋、密封圈(quan)防止潤滑脂泄漏。