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發布時間:2020-10-22 閱讀量:
隨(sui)著(zhe)行(xing)星(xing)傳(chuan)動(dong)技(ji)術(shu)的(de)迅(xun)速(su)發(fa)展(zhan),憑(ping)借(jie)行(xing)星(xing)減(jian)速(su)機(ji)的(de)體(ti)積(ji)小(xiao),重(zhong)量(liang)輕(qing),結(jie)構(gou)緊(jin)湊(cou),承(cheng)載(zai)能(neng)力(li)大(da),傳(chuan)動(dong)效(xiao)率(lv)高(gao),運(yun)轉(zhuan)平(ping)穩(wen),抗(kang)衝(chong)擊(ji)能(neng)力(li)強(qiang),傳(chuan)動(dong)比(bi)大(da),可(ke)以(yi)實(shi)現(xian)運(yun)動(dong)的(de)合(he)成(cheng)與(yu)分(fen)解(jie)等(deng)眾(zhong)多(duo)優(you)勢(shi)。行星減速機在各行各業中得到廣泛應用。
尤其在煤礦安全生產中起著重要的作用,運輸機、轉(zhuan)載(zai)機(ji)等(deng)多(duo)種(zhong)大(da)型(xing)設(she)備(bei)都(dou)需(xu)要(yao)且(qie)頻(pin)繁(fan)的(de)用(yong)到(dao)行(xing)星(xing)減(jian)速(su)機(ji),因(yin)此(ci)關(guan)於(yu)改(gai)善(shan)承(cheng)載(zai)能(neng)力(li),提(ti)高(gao)行(xing)星(xing)減(jian)速(su)機(ji)使(shi)用(yong)壽(shou)命(ming)成(cheng)了(le)重(zhong)要(yao)的(de)討(tao)論(lun)話(hua)題(ti)。行(xing)星(xing)傳(chuan)動(dong)中(zhong),往(wang)往(wang)較(jiao)弱(ruo)環(huan)節(jie)在(zai)齒(chi)輪(lun)的(de)傳(chuan)遞(di)上(shang),為(wei)提(ti)高(gao)減(jian)速(su)機(ji)承(cheng)載(zai)能(neng)力(li),故(gu)需(xu)要(yao)提(ti)高(gao)漸(jian)開(kai)線(xian)圓(yuan)柱(zhu)齒(chi)輪(lun)在(zai)重(zhong)載(zai)下(xia)的(de)使(shi)用(yong)性(xing)能(neng),滿(man)足(zu)重(zhong)載(zai)的(de)需(xu)求(qiu)。重(zhong)載(zai)齒(chi)輪(lun)傳(chuan)動(dong)中(zhong),內(nei)外(wai)齧(nie)合(he)齒(chi)輪(lun)副(fu)必(bi)須(xu)滿(man)足(zu)強(qiang)度(du)壽(shou)命(ming)和(he)齧(nie)合(he)質(zhi)量(liang)要(yao)求(qiu),普(pu)通(tong)的(de)設(she)計(ji)已(yi)不(bu)能(neng)達(da)到(dao)使(shi)用(yong)要(yao)求(qiu)。
減jian速su機ji外wai徑jing尺chi寸cun要yao保bao持chi不bu變bian,需xu要yao增zeng大da承cheng載zai能neng力li,可ke以yi采cai用yong合he理li增zeng大da齒chi輪lun模mo數shu,減jian低di齒chi輪lun齒chi數shu來lai滿man足zu。大da模mo數shu齒chi輪lun可ke以yi提ti高gao齒chi輪lun抗kang彎wan強qiang度du,抗kang彎wan強qiang度du是shi齒chi輪lun承cheng載zai能neng力li的de重zhong要yao指zhi標biao。同tong時shi也ye可ke以yi增zeng大da齧nie合he角jiaoa′,齧合角增大有利於增大綜合曲率半徑,減少赫茲應力,起到提高承載能力的作用。

為wei了le提ti高gao齒chi輪lun的de承cheng載zai能neng力li,必bi須xu分fen析xi齒chi輪lun傳chuan動dong的de失shi效xiao原yuan因yin及ji破po壞huai方fang式shi,找zhao出chu主zhu要yao矛mao盾dun,從cong而er確que定ding選xuan擇ze變bian位wei係xi數shu的de基ji本ben原yuan則ze。行xing星xing減jian速su機ji一yi般ban采cai用yong硬ying齒chi麵mian(HB7m/s),中速時使用油浴潤滑(2.5m/s 15m/s),高(gao)速(su)時(shi)使(shi)用(yong)強(qiang)製(zhi)潤(run)滑(hua)。要(yao)想(xiang)使(shi)齒(chi)輪(lun)維(wei)持(chi)高(gao)效(xiao)率(lv)的(de)動(dong)力(li)傳(chuan)動(dong),必(bi)須(xu)在(zai)齧(nie)合(he)齒(chi)麵(mian)上(shang)形(xing)成(cheng)安(an)定(ding)的(de)油(you)膜(mo)以(yi)防(fang)止(zhi)金(jin)屬(shu)接(jie)觸(chu)。為(wei)達(da)到(dao)此(ci)目(mu)的(de),必(bi)須(xu)要(yao)選(xuan)擇(ze)合(he)適(shi)粘(zhan)度(du)的(de)油(you)脂(zhi)。高(gao)粘(zhan)度(du)指(zhi)數(shu)表(biao)示(shi)該(gai)油(you)隨(sui)溫(wen)度(du)變(bian)化(hua)而(er)粘(zhan)度(du)變(bian)化(hua)較(jiao)小(xiao),有(you)利(li)於(yu)在(zai)工(gong)作(zuo)溫(wen)度(du)範(fan)圍(wei)內(nei)保(bao)持(chi)較(jiao)小(xiao)的(de)粘(zhan)度(du)變(bian)化(hua)量(liang),從(cong)而(er)提(ti)高(gao)潤(run)滑(hua)性(xing)能(neng)。在(zai)實(shi)際(ji)選(xuan)擇(ze)中(zhong)潤(run)滑(hua)油(you)脂(zhi)是(shi)按(an)載(zai)荷(he)、速度選取的,還要考慮傳遞功率、齧合效率、軸zhou承cheng效xiao率lv及ji進jin出chu油you口kou溫wen差cha等deng因yin素su。降jiang低di齒chi麵mian粗cu糙cao度du對dui潤run滑hua有you利li,容rong易yi形xing成cheng全quan油you膜mo。對dui漸jian開kai線xian齒chi輪lun齧nie合he的de點dian線xian接jie觸chu問wen題ti給gei出chu了le解jie釋shi。從cong理li論lun上shang計ji算suan出chu油you膜mo的de厚hou度du及ji強qiang度du,再zai選xuan擇ze合he適shi的de潤run滑hua油you脂zhi。潤run滑hua油you脂zhi裝zhuang入ru量liang的de取qu值zhi,潤run滑hua油you脂zhi過guo少shao,達da不bu到dao潤run滑hua目mu的de,相xiang反fan的de,在zai密mi封feng齒chi輪lun箱xiang中zhong,潤run滑hua油you脂zhi過guo多duo會hui造zao成cheng攪jiao拌ban損sun失shi過guo大da。
duiyuzhongzaichilun,zaicailiaoxuanzefangmianyaokaolvgongzuotedian,yaoqiubiaomianyaodadaoyidingdeyingdu,baozhengjiechuqiangdujinshunaimoxing,xinbuyouyidingderenxing。manzuzhexieyaoqiu,zhiyoushentancuihuochilunzuiweiheshi。duiyuzhongzaichilun,cailiaoyibancaiyonghantanliangdiyu0.2%的合金鋼,合金元素一般為Cr、Ni、Mo、Ti等。這些元素對提高淬透性、細化晶粒、提高耐磨性和韌性等分別有顯著的作用。設計時,要根據強度、工藝等因素綜合考慮。以上概述的幾種改善行星減速機承載能力,提高使用壽命的方法,生產實踐表明它們都是行之有效的,可供一般設計參考。