
輪胎聯軸器采用輪胎體狀(zhuang)橡(xiang)膠(jiao)元件,與兩個半聯經過螺栓聯接,實現(xian)扭(niu)矩傳遞和位移補(bu)償。橡(xiang)膠(jiao)輪胎聯軸(zhou)器具有較高的彈性(xing)性(xing)能(neng)(neng),扭(niu)轉(zhuan)剛度小(xiao),減震(zhen)能(neng)(neng)力強,軸(zhou)向補(bu)償能(neng)(neng)力較大(da),有良好的阻尼(ni)性(xing)能(neng)(neng)。
彈(dan)(dan)性輪(lun)胎(tai)(tai)聯(lian)軸(zhou)(zhou)器(qi)(qi)輪(lun)胎(tai)(tai)體(ti)(ti)是輪(lun)胎(tai)(tai)聯(lian)軸(zhou)(zhou)器(qi)(qi)必(bi)要(yao)的(de)備件之一(yi),相應的(de)分為(wei)UL、LA、LB輪(lun)胎(tai)(tai)體(ti)(ti)。輪(lun)胎(tai)(tai)式(shi)聯(lian)軸(zhou)(zhou)器(qi)(qi)分為(wei)凸型(xing)和凹型(xing)兩大類,凸型(xing)又分為(wei)帶骨架整體(ti)(ti)式(shi)、無(wu)骨整體(ti)(ti)式(shi)和徑向切口式(shi)三種。輪(lun)胎(tai)(tai)環內側用硫化方(fang)法與鋼質骨架粘(zhan)接成一(yi)體(ti)(ti),骨架上的(de)螺栓(shuan)孔(kong)處焊(han)有(you)螺母。裝配時(shi)用螺栓(shuan)與兩半聯(lian)軸(zhou)(zhou)器(qi)(qi)的(de)凸緣連接,依(yi)靠擰(ning)緊螺栓(shuan)使輪(lun)胎(tai)(tai)與凸緣端面(mian)之間產生(sheng)的(de)摩擦(ca)力來傳遞轉矩,輪(lun)胎(tai)(tai)環工(gong)作時(shi)發生(sheng)扭轉剪(jian)切變形,故(gu)輪(lun)胎(tai)(tai)聯(lian)軸(zhou)(zhou)器(qi)(qi)具(ju)有(you)很高的(de)彈(dan)(dan)性,補償兩軸(zhou)(zhou)相對位移的(de)能力較大,并有(you)良好(hao)的(de)阻(zu)尼(ni),而且結構簡單(dan)、不需(xu)潤(run)滑、裝拆和維護(hu)都比較方(fang)便。
輪胎式聯軸器缺點是承(cheng)載(zai)能力(li)(li)不高、外形尺(chi)寸較大(da),隨著兩(liang)軸相(xiang)對扭轉(zhuan)角的(de)增加使(shi)輪(lun)胎外形扭歪,軸向(xiang)尺(chi)寸略有減小,將在兩(liang)軸上產生較大(da)的(de)附加軸向(xiang)力(li)(li),使(shi)軸承(cheng)負載(zai)加大(da)而降低(di)壽(shou)命。輪(lun)胎聯(lian)軸器(qi)(qi)高速運轉(zhuan)時(shi)(shi)(shi),輪(lun)胎外緣由于(yu)離心力(li)(li)的(de)作用而向(xiang)外擴張,將進一步(bu)增大(da)附加軸向(xiang)力(li)(li)。為(wei)此,在安裝(zhuang)聯(lian)軸器(qi)(qi)時(shi)(shi)(shi)應(ying)采取措施(shi),使(shi)輪(lun)胎中的(de)應(ying)力(li)(li)方向(xiang)與(yu)工(gong)作時(shi)(shi)(shi)產生的(de)應(ying)力(li)(li)方向(xiang)相(xiang)反,以抵(di)消部分附加軸向(xiang)力(li)(li),達到改善聯(lian)軸器(qi)(qi)和兩(liang)軸承(cheng)的(de)工(gong)和條件。
輪胎式(shi)聯(lian)軸(zhou)器(qi)由于(yu)種種原因使其質心或慣性主(zhu)軸(zhou)與其加(jia)轉(zhuan)軸(zhou)線不(bu)重(zhong)合,在運(yun)轉(zhuan)時將產(chan)生不(bu)平衡(heng)(heng)離(li)心慣性力、離(li)心慣性力偶和(he)(he)動撓(nao)度(振型)的現(xian)象,稱為轉(zhuan)子的不(bu)平衡(heng)(heng)現(xian)象,這(zhe)種不(bu)平衡(heng)(heng)現(xian)象必(bi)然(ran)引起軸(zhou)系的振動,從(cong)而(er)影響(xiang)機器(qi)的正常工作和(he)(he)使用壽命,因而(er)對其必(bi)須加(jia)以重(zhong)視。
The tyre coupling adopts tyre body-shaped rubber elements, which are connected with two semi-couplings through bolts to realize torque transmission and displacement compensation. Tyre coupling has high elastic performance, small torsional rigidity, strong damping capacity, large axial compensation capacity, and good damping performance.
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