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垂直齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)式聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)是由(you)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)數相(xiang)同的內(nei)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)圈(quan)和帶外齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)的凸緣半聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)等零件組(zu)成。外齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)分為直齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)和鼓形(xing)(xing)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)兩種齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)形(xing)(xing)，所謂鼓形(xing)(xing)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)即為將(jiang)外齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)制成球(qiu)面(mian)，球(qiu)面(mian)中心在齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)軸(zhou)(zhou)(zhou)(zhou)線(xian)上，齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)側間隙較一般齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)大(da)，鼓形(xing)(xing)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)可允許較大(da)的角位移(yi)(相(xiang)對(dui)于直齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi))，可改善齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)的接觸條(tiao)件，提高傳遞轉(zhuan)矩的能(neng)力(li)，延長使用壽命。

垂直齒(chi)(chi)(chi)式聯軸器(qi)在工(gong)作(zuo)時(shi)，兩軸產生相對位移(yi)，內外齒(chi)(chi)(chi)的齒(chi)(chi)(chi)面周(zhou)期性作(zuo)軸向相對滑動，必然形(xing)成齒(chi)(chi)(chi)面磨損和(he)功率(lv)損耗(hao)，因此齒(chi)(chi)(chi)式聯軸器(qi)需在良好潤滑和(he)密封的狀態下(xia)工(gong)作(zuo)。

垂(chui)直(zhi)齒(chi)式(shi)(shi)聯(lian)(lian)軸(zhou)器(qi)徑向尺寸小，承(cheng)載能力大(da)，常用于(yu)(yu)(yu)低速重載工(gong)況(kuang)條件的(de)軸(zhou)系(xi)傳(chuan)動(dong)(dong)(dong)，如冶金、礦山、起重運(yun)輸行業(ye)，也適用于(yu)(yu)(yu)石油(you)、化工(gong)、通用機械等行業(ye)。高精(jing)度(du)并經(jing)動(dong)(dong)(dong)平(ping)衡的(de)齒(chi)式(shi)(shi)聯(lian)(lian)軸(zhou)器(qi)可(ke)用于(yu)(yu)(yu)高速傳(chuan)動(dong)(dong)(dong)，如燃汽輪(lun)機的(de)軸(zhou)系(xi)傳(chuan)動(dong)(dong)(dong)。由于(yu)(yu)(yu)鼓形齒(chi)式(shi)(shi)聯(lian)(lian)軸(zhou)器(qi)的(de)角(jiao)向補償大(da)于(yu)(yu)(yu)直(zhi)齒(chi)式(shi)(shi)聯(lian)(lian)軸(zhou)器(qi)，國(guo)內外(wai)均廣泛采用鼓形齒(chi)式(shi)(shi)聯(lian)(lian)軸(zhou)器(qi)。