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動車鼓(gu)形齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)式聯軸(zhou)器(qi)是由齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)數相(xiang)同的(de)(de)內齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)圈和帶外齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)凸(tu)緣(yuan)半聯軸(zhou)器(qi)等零件(jian)組成(cheng)。外齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)分為(wei)直齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)和鼓(gu)形齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)兩(liang)種(zhong)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)形，所謂鼓(gu)形齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)即為(wei)將外齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)制(zhi)成(cheng)球面，球面中心在齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)軸(zhou)線上(shang)，齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)側間隙較一般(ban)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)大，鼓(gu)形齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)聯軸(zhou)器(qi)可(ke)(ke)允許較大的(de)(de)角位移(相(xiang)對(dui)于直齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)聯軸(zhou)器(qi))，可(ke)(ke)改善齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)接觸(chu)條(tiao)件(jian)，提高傳(chuan)遞轉矩的(de)(de)能力(li)，延長使(shi)用(yong)壽命。

動車鼓形齒式聯軸(zhou)器在(zai)工作(zuo)時，兩軸(zhou)產生相對位(wei)移，內外齒的(de)齒面周期(qi)性作(zuo)軸(zhou)向(xiang)相對滑動，必然形成齒面磨損和(he)功率損耗，因(yin)此齒式聯軸(zhou)器需在(zai)良好潤滑和(he)密封的(de)狀(zhuang)態下工作(zuo)。

動(dong)車鼓(gu)形齒式(shi)聯(lian)軸(zhou)器(qi)(qi)徑向(xiang)尺寸(cun)小，承載能力大，常用(yong)于(yu)低速(su)重載工況條件的(de)(de)軸(zhou)系傳動(dong)，如冶金、礦山、起重運輸行業(ye)，也(ye)適用(yong)于(yu)石油、化工、通用(yong)機械等行業(ye)。高精(jing)度并經動(dong)平衡的(de)(de)齒式(shi)聯(lian)軸(zhou)器(qi)(qi)可用(yong)于(yu)高速(su)傳動(dong)，如燃(ran)汽(qi)輪機的(de)(de)軸(zhou)系傳動(dong)。由于(yu)鼓(gu)形齒式(shi)聯(lian)軸(zhou)器(qi)(qi)的(de)(de)角向(xiang)補償大于(yu)直齒式(shi)聯(lian)軸(zhou)器(qi)(qi)，國內外均廣泛采(cai)用(yong)鼓(gu)形齒式(shi)聯(lian)軸(zhou)器(qi)(qi)。