卷筒聯軸器是一種新(xin)型(xing)撓性聯軸器(qi)，主要用于(yu)起重設(she)(she)備中起升機構的(de)(de)減(jian)速器(qi)輸(shu)出軸與(yu)鋼絲繩(sheng)卷筒的(de)(de)聯接，也適用于(yu)其它類似(si)的(de)(de)既(ji)傳遞轉矩又承受(shou)徑向(xiang)(xiang)載荷的(de)(de)機械(xie)設(she)(she)備，但不能(neng)用作需承受(shou)軸向(xiang)(xiang)載荷的(de)(de)傳動。卷筒工(gong)作時(shi)產生(sheng)(sheng)的(de)(de)附加軸向(xiang)(xiang)載荷必須(xu)由卷筒固定支承座承受(shou)，因此，聯軸器(qi)安裝時(shi)必須(xu)保證軸向(xiang)(xiang)定位(wei)正確。否(fou)則卷筒工(gong)作時(shi)產生(sheng)(sheng)的(de)(de)彈性水(shui)平位(wei)移(yi)可能(neng)會破(po)壞(huai)聯軸器(qi)的(de)(de)軸向(xiang)(xiang)限位(wei)，造成聯接失效，甚(shen)至釀成嚴重事(shi)故。

卷筒聯軸器由(you)帶鼓(gu)形(xing)(xing)齒(chi)(chi)的外(wai)(wai)(wai)齒(chi)(chi)軸(zhou)套(tao)(tao)、帶聯(lian)(lian)接(jie)法蘭和(he)(he)內齒(chi)(chi)圈的外(wai)(wai)(wai)套(tao)(tao)、帶外(wai)(wai)(wai)球面(mian)的承載環、端蓋和(he)(he)密(mi)(mi)封(feng)圈等(deng)組成(cheng)，并設有(you)定(ding)位磨損(sun)指(zhi)針、潤(run)滑油孔和(he)(he)通氣孔等(deng)。外(wai)(wai)(wai)齒(chi)(chi)軸(zhou)套(tao)(tao)和(he)(he)外(wai)(wai)(wai)套(tao)(tao)構(gou)成(cheng)的鼓(gu)形(xing)(xing)齒(chi)(chi)式(shi)聯(lian)(lian)軸(zhou)器(qi)傳遞驅(qu)動(dong)功率(lv), 而由(you)承載環的外(wai)(wai)(wai)球面(mian)和(he)(he)外(wai)(wai)(wai)套(tao)(tao)的內承載面(mian)形(xing)(xing)成(cheng)的接(jie)觸副構(gou)成(cheng)自動(dong)調位的球面(mian)軸(zhou)承，承受徑向載荷(he)。卷(juan)筒用聯(lian)(lian)軸(zhou)器(qi)的內、外(wai)(wai)(wai)齒(chi)(chi)嚙合(he)在油浴中工作(zuo),通過內外(wai)(wai)(wai)端蓋、密(mi)(mi)封(feng)圈防止潤(run)滑脂泄漏。