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鼓(gu)式齒(chi)(chi)式聯(lian)軸器是由齒(chi)(chi)數(shu)相同的內齒(chi)(chi)圈和(he)帶外(wai)齒(chi)(chi)的凸緣半聯(lian)軸器等零件(jian)組成。外(wai)齒(chi)(chi)分(fen)為直(zhi)齒(chi)(chi)和(he)鼓(gu)形齒(chi)(chi)兩(liang)種齒(chi)(chi)形，所(suo)謂鼓(gu)形齒(chi)(chi)即為將外(wai)齒(chi)(chi)制成球面(mian)，球面(mian)中心在齒(chi)(chi)輪(lun)軸線上，齒(chi)(chi)側間隙較(jiao)一般齒(chi)(chi)輪(lun)大(da)，鼓(gu)形齒(chi)(chi)聯(lian)軸器可允(yun)許較(jiao)大(da)的角位移(相對(dui)于直(zhi)齒(chi)(chi)聯(lian)軸器)，可改善齒(chi)(chi)的接觸條(tiao)件(jian)，提高傳遞轉矩的能力，延長使用壽命(ming)。

鼓(gu)式(shi)齒(chi)(chi)(chi)式(shi)聯軸器在工作(zuo)時，兩(liang)軸產生相對(dui)位移，內(nei)外齒(chi)(chi)(chi)的齒(chi)(chi)(chi)面周期性作(zuo)軸向相對(dui)滑動，必然形成(cheng)齒(chi)(chi)(chi)面磨(mo)損(sun)和功(gong)率損(sun)耗，因此(ci)齒(chi)(chi)(chi)式(shi)聯軸器需(xu)在良好潤(run)滑和密封的狀態下工作(zuo)。

鼓(gu)式(shi)(shi)齒(chi)式(shi)(shi)聯(lian)(lian)軸器(qi)(qi)徑向(xiang)尺(chi)寸小，承載(zai)能(neng)力(li)大(da)，常用(yong)于低(di)速(su)重載(zai)工(gong)(gong)況條件的軸系傳(chuan)動，如(ru)冶金(jin)、礦山、起重運輸行(xing)(xing)業，也適用(yong)于石油、化工(gong)(gong)、通(tong)用(yong)機(ji)械等(deng)行(xing)(xing)業。高(gao)精度并經動平衡的齒(chi)式(shi)(shi)聯(lian)(lian)軸器(qi)(qi)可用(yong)于高(gao)速(su)傳(chuan)動，如(ru)燃汽輪機(ji)的軸系傳(chuan)動。由(you)于鼓(gu)形齒(chi)式(shi)(shi)聯(lian)(lian)軸器(qi)(qi)的角向(xiang)補償(chang)大(da)于直齒(chi)式(shi)(shi)聯(lian)(lian)軸器(qi)(qi)，國內(nei)外均廣泛采用(yong)鼓(gu)形齒(chi)式(shi)(shi)聯(lian)(lian)軸器(qi)(qi)。