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開卷伸縮式齒(chi)(chi)(chi)(chi)式聯(lian)軸(zhou)器(qi)(qi)是由齒(chi)(chi)(chi)(chi)數相同的內(nei)齒(chi)(chi)(chi)(chi)圈和帶外(wai)齒(chi)(chi)(chi)(chi)的凸緣半聯(lian)軸(zhou)器(qi)(qi)等零件組成。外(wai)齒(chi)(chi)(chi)(chi)分為直齒(chi)(chi)(chi)(chi)和鼓形(xing)齒(chi)(chi)(chi)(chi)兩種(zhong)齒(chi)(chi)(chi)(chi)形(xing)，所謂(wei)鼓形(xing)齒(chi)(chi)(chi)(chi)即為將外(wai)齒(chi)(chi)(chi)(chi)制成球面，球面中(zhong)心在齒(chi)(chi)(chi)(chi)輪軸(zhou)線上(shang)，齒(chi)(chi)(chi)(chi)側間隙(xi)較一般齒(chi)(chi)(chi)(chi)輪大(da)，鼓形(xing)齒(chi)(chi)(chi)(chi)聯(lian)軸(zhou)器(qi)(qi)可允許較大(da)的角位(wei)移(相對于直齒(chi)(chi)(chi)(chi)聯(lian)軸(zhou)器(qi)(qi))，可改善齒(chi)(chi)(chi)(chi)的接觸(chu)條件，提高傳(chuan)遞轉矩的能力，延長使用壽命。

開卷伸縮(suo)式(shi)齒(chi)(chi)(chi)式(shi)聯(lian)軸器(qi)在工(gong)作(zuo)時，兩軸產生相對位移，內外齒(chi)(chi)(chi)的齒(chi)(chi)(chi)面周期性(xing)作(zuo)軸向相對滑動，必然形成齒(chi)(chi)(chi)面磨損和功率損耗，因(yin)此齒(chi)(chi)(chi)式(shi)聯(lian)軸器(qi)需(xu)在良(liang)好潤滑和密封的狀態(tai)下(xia)工(gong)作(zuo)。

開卷伸(shen)縮式(shi)齒式(shi)聯軸(zhou)器徑(jing)向尺(chi)寸小，承載能(neng)力大，常用于低速重(zhong)載工況條件的(de)軸(zhou)系(xi)傳動(dong)，如(ru)冶金、礦(kuang)山、起重(zhong)運(yun)輸行(xing)業，也適用于石(shi)油、化工、通用機(ji)械等(deng)行(xing)業。高(gao)精度并經動(dong)平衡的(de)齒式(shi)聯軸(zhou)器可(ke)用于高(gao)速傳動(dong)，如(ru)燃(ran)汽輪機(ji)的(de)軸(zhou)系(xi)傳動(dong)。由(you)于鼓形(xing)(xing)齒式(shi)聯軸(zhou)器的(de)角向補償大于直齒式(shi)聯軸(zhou)器，國(guo)內外(wai)均廣泛采用鼓形(xing)(xing)齒式(shi)聯軸(zhou)器。