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        1. 產(chǎn)品(pin)目(mu)錄(lu)
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          技(ji)術(shù)(shu)文(wen)章(zhang)
          力(li)士(shi)樂(lè)(le)比(bi)例(li)閥遇故(gu)障如(ru)何解決?
          點(diǎn)(dian)擊(ji)次數(shù)(shu):1158 更(geng)新(xin)時(shí)(shi)間:2022-05-06 打(da)印(yin)本(ben)頁(yè)面(mian) 返(fan)回(hui)

            很(hen)多人都很關(guān)(guan)心壹個(gè)問(wèn)(wen)題(ti),那(na)就(jiu)是(shi)當(dāng)?shù)聡?guó)(guo)力(li)士(shi)樂(lè)(le)比(bi)例(li)閥遇到(dao)故障應(yīng)(ying)該(gai)如(ru)何解決?下(xia)面(mian)為(wei)您(nin)分(fen)享的是(shi)力士(shi)樂(lè)(le)比(bi)例(li)閥故障(zhang)解(jie)決如(ru)下(xia):

          REXROTH比例(li)閥中的(de)比(bi)例(li)電(dian)磁鐵故障(zhang)由於插(cha)頭組件(jian)的接(jie)線插(cha)座(zuo)基(ji)座(zuo)老化接觸不(bu)良以(yi)及(ji)電(dian)磁鐵引線(xian)脫(tuo)焊等(deng)原因?qū)?dao)致(zhi)比例(li)電(dian)磁鐵不能(neng)工(gong)作(zuo)不(bu)能(neng)通(tong)人電(dian)流此時(shí)(shi)可用(yong)電(dian)表

          1)應(yīng)(ying)根據(jù)所(suo)需控(kong)制(zhi)的(de)流(liu)量(liang)選擇合(he)適的(de)換(huan)向(xiang)閥通(tong)徑(jing)。如(ru)果(guo)閥的通(tong)徑(jing)大(da)於10mm,則應(yīng)(ying)選用(yong)液(ye)動(dòng)(dong)換向閥或(huo)電(dian)液(ye)動(dòng)(dong)換向閥。使用(yong)時(shí)(shi)不能(neng)超過(guò)制(zhi)造(zao)廠(chang)樣(yang)本(ben)中(zhong)所(suo)規(guī)定的額(e)定壓(ya)力(li)以(yi)及(ji)流量(liang)極限,以(yi)免(mian)造成動(dòng)(dong)作(zuo)不(bu)良。   

          2)根據(jù)整(zheng)個(gè)液(ye)壓(ya)系(xi)統(tǒng)(tong)各種液(ye)壓(ya)閥的連接(jie)安(an)裝方式(shi)協(xié)(xie)調(diào)(tiao)壹致(zhi)的原則,選(xuan)用(yong)合(he)適的(de)安(an)裝連接(jie)方(fang)式(shi)。   

          3)根據(jù)自(zi)動(dòng)(dong)化程度的要(yao)求和主機(jī)工(gong)作(zuo)環(huán)(huan)境(jing)情況選(xuan)用(yong)適(shi)當(dāng)?shù)膿Q(huan)向(xiang)閥操(cao)縱控(kong)制(zhi)方(fang)式(shi)。如(ru)工(gong)業(yè)設(shè)備液(ye)壓(ya)系(xi)統(tǒng)(tong),由於工(gong)作(zuo)場(chǎng)(chang)地(di)固定,且(qie)有(you)穩(wěn)(wen)定電(dian)源供(gong)應(yīng)(ying),故通(tong)常(chang)要(yao)選(xuan)用(yong)電(dian)磁換向閥或(huo)電(dian)液(ye)動(dòng)(dong)換向閥;而野外(wai)工(gong)作(zuo)的(de)液(ye)壓(ya)設(shè)(she)備系(xi)統(tǒng)(tong),主機(jī)經(jīng)(jing)常(chang)需要(yao)更(geng)換(huan)工(gong)作(zuo)場(chǎng)(chang)地(di)且(qie)沒(méi)(mei)有(you)電(dian)力供(gong)應(yīng)(ying),故需(xu)考慮選(xuan)用(yong)手動(dòng)(dong)換向閥;再如(ru)在(zai)環(huán)(huan)境(jing)惡劣(如(ru)潮(chao)濕、高(gao)溫、高(gao)壓(ya)、有(you)腐蝕氣(qi)體(ti)等(deng))下(xia)工作(zuo)的(de)液(ye)壓(ya)設(shè)(she)備系(xi)統(tǒng)(tong),為(wei)了(le)保證人身(shen)設(shè)備的(de)安(an)全,則可(ke)考慮選(xuan)用(yong)氣(qi)控(kong)液(ye)壓(ya)換(huan)向(xiang)閥。   

          4)根據(jù)液(ye)壓(ya)系(xi)統(tǒng)(tong)的(de)工作(zuo)要(yao)求,選用(yong)合(he)適的(de)滑閥機(jī)能(neng)與對(duì)(dui)中方式(shi)。  

          5)對(duì)電(dian)磁換向閥,要(yao)根據(jù)所(suo)用的(de)電(dian)源、使用壽(shou)命、切(qie)換頻(pin)率、安(an)全特性等選用(yong)合(he)適的(de)電(dian)磁鐵。

          由於插(cha)頭組件(jian)的接(jie)線插(cha)座(zuo)〔基(ji)座(zuo))老化、接觸不(bu)良以(yi)及(ji)電(dian)磁鐵引線(xian)脫(tuo)焊等(deng)原因,銜鐵(tie)組件(jian)的故(gu)唪主要(yao)有(you)銜(xian)鐵(tie)因其與導(dǎo)(dao)磁套構(gòu)成(cheng)的(de)摩擦(ca)副在(zai)使用(yong)過(guò)程(cheng)中磨(mo)損,導(dǎo)(dao)致(zhi)閥的力(li)滯環(huán)(huan)增(zeng)加。還有(you)推桿(gan)導(dǎo)(dao)桿與銜(xian)鐵不同(tong)心,也(ye)會(huì)(hui)引起(qi)力(li)滯環(huán)(huan)增(zeng)加,必(bi)須(xu)排除之(zhi)導(dǎo)(dao)致(zhi)比例(li)電(dian)磁鐵不能(neng)工(gong)作(zuo)(不(bu)能(neng)通(tong)人電(dian)流)。此時(shí)(shi)可用(yong)電(dian)表檢測(cè)(ce),如(ru)發(fā)(fa)現(xiàn)(xian)電(dian)阻(zu)無(wú)(wu)限大(da),可重(zhong)新(xin)將引線(xian)焊(han)牢,修復(fù)(fu)插(cha)座(zuo)並(bing)將插(cha)座(zuo)插(cha)牢,在(zai)當(dāng)閥4調(diào)(tiao)節(jié)壓(ya)力(li)過(guò)低(di)時(shí)(shi),雖然比例(li)電(dian)磁鐵3的通(tong)過(guò)電(dian)流為(wei)額(e)定值,但(dan)壓(ya)力(li)也(ye)上(shang)不(bu)去。若(ruo)閥4的設(shè)(she)定壓(ya)力(li)過(guò)低(di),則先導(dǎo)(dao)流量(liang)從閥4流回(hui)油(you)箱,使(shi)壓(ya)力(li)上(shang)不(bu)來(lái)(lai)。此時(shí)(shi)應(yīng)(ying)將閥4的調(diào)(tiao)定壓(ya)力(li)比(bi)閩(min)1Mpa的(de)大(da)工作(zuo)壓(ya)力(li)調(diào)(tiao)高(gao)左右(you)。

            壓(ya)力(li)響(xiang)應(yīng)(ying)遲(chi)滯,壓(ya)力(li)改(gai)變(bian)緩慢產(chǎn)生原因?yàn)?wei)比例(li)電(dian)磁鐵內(nèi)的(de)空(kong)氣(qi)未被放幹凈;電(dian)磁鐵鐵芯(xin)上(shang)設(shè)(she)置的阻(zu)尼(ni)用的(de)固定節(jié)流孔(kong)及(ji)主閥芯(xin)節(jié)流孔(kong)(或(huo)旁路(lu)節(jié)流孔(kong))被汙物(wu)堵(du)住(zhu),比(bi)例(li)電(dian)磁鐵鐵芯(xin)及(ji)主閥芯(xin)的(de)運(yùn)(yun)動(dòng)(dong)受到不必(bi)要(yao)的(de)阻(zu)礙(ai);另外系(xi)統(tǒng)(tong)中(zhong)進(jìn)了(le)空(kong)氣(qi),通(tong)常(chang)發(fā)(fa)生在(zai)設(shè)備剛裝好後(hou)開(kāi)始運(yùn)(yun)轉(zhuǎn)(zhuan)時(shí)(shi)或(huo)長(zhǎng)(chang)期停機(jī)後(hou)有空(kong)氣(qi)混人的(de)場(chǎng)(chang)合(he),解決辦(ban)法是(shi)比例(li)壓(ya)力(li)閥在(zai)剛開(kāi)始使(shi)用前(qian)要(yao)先擰松(song)放氣(qi)螺(luo)釘(ding),放幹凈空(kong)氣(qi),有(you)油(you)液(ye)流(liu)出為(wei)止。對(duì)於比(bi)例(li)調(diào)(tiao)節(jié)閥汙物(wu)堵(du)塞(sai)阻(zu)尼(ni)孔(kong)等(deng)情況要(yao)拆開(kāi)比例(li)電(dian)磁鐵和主閥進(jìn)行(xing)清(qing)洗,並(bing)在(zai)空氣(qi)容易(yi)集(ji)中(zhong)的(de)系(xi)統(tǒng)(tong)油(you)路(lu)的位置,設(shè)置放氣(qi)閥放氣(qi)或(huo)者(zhe)擰松(song)管(guan)接頭放氣(qi)。

            此外(wai),壹般比例(li)電(dian)磁鐵驅(qū)動(dòng)(dong)的比例(li)閥滯環(huán)(huan)為(wei)3%~7%,力矩(ju)馬達(dá)(da)驅(qū)動(dòng)(dong)的比例(li)閥滯環(huán)(huan)為(wei)1.5%~3%,伺(si)服(fu)電(dian)機(jī)驅(qū)動(dòng)(dong)的比例(li)閥為(wei)1.5%左右(you),亦(yi)即(ji)采(cai)用(yong)伺(si)服(fu)電(dian)機(jī)驅(qū)動(dòng)(dong)的比例(li)流(liu)量(liang)閥,流量(liang)的改(gai)變(bian)量(liang)相(xiang)對(duì)(dui)要(yao)小(xiao)壹些。 


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