發動機件生產廠家(jia)為(wei)降低(di)或(huo)緩和單缸摩托車發動(dong)(dong)(dong)機工(gong)作(zuo)時的(de)(de)震動(dong)(dong)(dong)，現有技術通(tong)常(chang)(chang)采(cai)用在曲(qu)柄上增(zeng)加 平(ping)衡(heng)(heng)軸(zhou)裝置的(de)(de)技術措施(shi)。因該(gai)平(ping)衡(heng)(heng)軸(zhou)裝置與曲(qu)柄軸(zhou)轉(zhuan)動(dong)(dong)(dong)同步，轉(zhuan)速高(gao)達10000 rpm。為(wei)克 服高(gao)轉(zhuan)速帶來的(de)(de)傳動(dong)(dong)(dong)噪聲及高(gao)頻(pin)沖(chong)擊，通(tong)常(chang)(chang)將平(ping)衡(heng)(heng)軸(zhou)齒輪(lun)副(fu)設計為(wei)精度(du)等級(ji)較高(gao)的(de)(de)6級(ji)精 度(du)，并(bing)且(qie)，從動(dong)(dong)(dong)齒輪(lun)還設計為(wei)帶有彈簧緩沖(chong)裝置的(de)(de)主、副(fu)齒結(jie)構，其(qi)(qi)齒輪(lun)通(tong)常(chang)(chang)采(cai)用低(di)碳(tan)合金 鋼制(zhi)造并(bing)采(cai)用滲碳(tan)淬火工(gong)藝提(ti)高(gao)強(qiang)度(du)及表面硬度(du)。現有技術平(ping)衡(heng)(heng)軸(zhou)齒輪(lun)副(fu)雖然可(ke)明顯降低(di) 或(huo)緩和發動(dong)(dong)(dong)機工(gong)作(zuo)時的(de)(de)震動(dong)(dong)(dong)，但其(qi)(qi)結(jie)構復(fu)雜，增(zeng)加了整車重量和傳動(dong)(dong)(dong)噪聲，增(zeng)加了制(zhi)造成本 和動(dong)(dong)(dong)力(li)損耗。