卷筒聯軸器是一種新型撓性(xing)(xing)聯軸(zhou)器(qi)，主要用于起重(zhong)設備(bei)中起升機(ji)構的減速器(qi)輸出軸(zhou)與(yu)鋼絲繩卷筒(tong)的聯接，也(ye)適用于其(qi)它類似的既(ji)傳遞(di)轉(zhuan)矩(ju)又承(cheng)(cheng)(cheng)受(shou)徑向載(zai)荷(he)的機(ji)械設備(bei)，但(dan)不能用作需(xu)承(cheng)(cheng)(cheng)受(shou)軸(zhou)向載(zai)荷(he)的傳動。卷筒(tong)工(gong)作時產(chan)(chan)生的附(fu)加(jia)軸(zhou)向載(zai)荷(he)必須(xu)由卷筒(tong)固定(ding)支承(cheng)(cheng)(cheng)座承(cheng)(cheng)(cheng)受(shou)，因此，聯軸(zhou)器(qi)安裝時必須(xu)保證(zheng)軸(zhou)向定(ding)位正確。否(fou)則卷筒(tong)工(gong)作時產(chan)(chan)生的彈性(xing)(xing)水(shui)平位移可能會(hui)破壞聯軸(zhou)器(qi)的軸(zhou)向限位，造成聯接失效，甚至釀成嚴重(zhong)事(shi)故。

卷筒聯軸器由帶(dai)鼓形齒(chi)(chi)的外(wai)齒(chi)(chi)軸(zhou)(zhou)套(tao)(tao)、帶(dai)聯接法蘭和內(nei)齒(chi)(chi)圈(quan)的外(wai)套(tao)(tao)、帶(dai)外(wai)球(qiu)面(mian)的承載環、端蓋(gai)和密(mi)封(feng)圈(quan)等(deng)組成，并設有(you)定(ding)位磨損(sun)指針、潤(run)滑(hua)(hua)油孔和通氣孔等(deng)。外(wai)齒(chi)(chi)軸(zhou)(zhou)套(tao)(tao)和外(wai)套(tao)(tao)構成的鼓形齒(chi)(chi)式聯軸(zhou)(zhou)器傳(chuan)遞驅動(dong)功率, 而由承載環的外(wai)球(qiu)面(mian)和外(wai)套(tao)(tao)的內(nei)承載面(mian)形成的接觸副構成自動(dong)調位的球(qiu)面(mian)軸(zhou)(zhou)承，承受徑向載荷。卷(juan)筒(tong)用聯軸(zhou)(zhou)器的內(nei)、外(wai)齒(chi)(chi)嚙合在油浴中工(gong)作,通過內(nei)外(wai)端蓋(gai)、密(mi)封(feng)圈(quan)防(fang)止潤(run)滑(hua)(hua)脂泄(xie)漏。