卷筒聯軸器是一種新(xin)型撓性(xing)聯(lian)軸(zhou)器，主要用于(yu)起(qi)(qi)重設備中(zhong)起(qi)(qi)升(sheng)機構的(de)減速(su)器輸出(chu)軸(zhou)與鋼絲(si)繩卷筒(tong)(tong)的(de)聯(lian)接，也適用于(yu)其它類似的(de)既傳遞轉矩又承(cheng)受(shou)徑(jing)向(xiang)(xiang)載荷的(de)機械(xie)設備，但不能用作需(xu)承(cheng)受(shou)軸(zhou)向(xiang)(xiang)載荷的(de)傳動。卷筒(tong)(tong)工作時(shi)產(chan)生(sheng)(sheng)的(de)附加(jia)軸(zhou)向(xiang)(xiang)載荷必須(xu)由卷筒(tong)(tong)固定支承(cheng)座承(cheng)受(shou)，因此，聯(lian)軸(zhou)器安裝時(shi)必須(xu)保證軸(zhou)向(xiang)(xiang)定位正確(que)。否則卷筒(tong)(tong)工作時(shi)產(chan)生(sheng)(sheng)的(de)彈(dan)性(xing)水平(ping)位移(yi)可能會(hui)破(po)壞聯(lian)軸(zhou)器的(de)軸(zhou)向(xiang)(xiang)限位，造成(cheng)聯(lian)接失效，甚(shen)至釀成(cheng)嚴重事故(gu)。

卷筒聯軸器由帶鼓形(xing)齒的外(wai)齒軸(zhou)(zhou)套(tao)(tao)、帶聯(lian)(lian)接法蘭和(he)內(nei)齒圈(quan)的外(wai)套(tao)(tao)、帶外(wai)球(qiu)面(mian)(mian)的承(cheng)(cheng)(cheng)載環、端蓋和(he)密(mi)封(feng)圈(quan)等組(zu)成，并設有定位(wei)磨損(sun)指(zhi)針、潤滑油孔和(he)通(tong)(tong)氣孔等。外(wai)齒軸(zhou)(zhou)套(tao)(tao)和(he)外(wai)套(tao)(tao)構成的鼓形(xing)齒式聯(lian)(lian)軸(zhou)(zhou)器傳遞驅動功率, 而由承(cheng)(cheng)(cheng)載環的外(wai)球(qiu)面(mian)(mian)和(he)外(wai)套(tao)(tao)的內(nei)承(cheng)(cheng)(cheng)載面(mian)(mian)形(xing)成的接觸(chu)副構成自動調位(wei)的球(qiu)面(mian)(mian)軸(zhou)(zhou)承(cheng)(cheng)(cheng)，承(cheng)(cheng)(cheng)受(shou)徑向(xiang)載荷。卷筒用聯(lian)(lian)軸(zhou)(zhou)器的內(nei)、外(wai)齒嚙合在(zai)油浴中工作,通(tong)(tong)過內(nei)外(wai)端蓋、密(mi)封(feng)圈(quan)防(fang)止潤滑脂泄漏。