力士樂(le)換向(xiang)閥/REXROTH換向閥樣本產(chǎn)品概(gai)述(shu)：

力士樂(le)換向(xiang)閥/REXROTH換向閥樣本本公司(si)擁(yong)有(you)大量(liang)力士樂(le)換向(xiang)閥/REXROTH換向閥常規(guī)庫存。公司(si)擁(yong)有(you)強(qiáng)(qiang)大銷(xiao)售及技術(shù)服務(wù)隊(duì)伍，能為(wei)客(ke)戶(hu)提供高(gao)質(zhì)(zhi)量(liang)服務(wù)。公司(si)經(jīng)(jing)銷(xiao)銷(xiao)售低價(jià)銷(xiao)售德(de)國REXROTH齒輪(lun)泵,REXROTH油(you)泵、 REXROTH電(dian)磁閥、REXROTH電磁換向(xiang)閥、REXROTH柱(zhu)塞(sai)泵、REXROTH直線型(xing)氣動(dòng)(dong)執(zhí)(zhi)行(xing)器 ,REXROTH液(ye)壓馬達(dá),REXROTH截止閥,REXROTH電液(ye)系統(tǒng)(tong),REXROTH方向閥,REXROTH 壓力控(kong)制(zhi)閥,REXROTH傳感器,REXROTH葉(ye)片泵,REXROTH換檔(dang)氣缸(gang),REXROTH放大卡，歡您前來(lai)比(bi)價(jià)(jia)采購(gou)！力士樂(le)Rexroth電磁(ci)換(huan)向(xiang)閥包括換向(xiang)滑閥和電磁鐵兩部(bu)分(fen)口電磁(ci)鐵按(an)使用(yong)電源的不(bu)同(tong)，可(ke)分(fen)為(wei)交(jiao)流(liu)Rexroth電磁換(huan)向閥和直流Rexroth電(dian)磁換(huan)向(xiang)閥兩種。按銜鐵工(gong)作(zuo)腔(qiang)是否(fou)有(you)油(you)液(ye)又可分(fen)為(wei)幹(gan)式Rexroth電(dian)磁換向閥和濕式Rexroth電(dian)磁換向閥。交(jiao)流(liu)電磁鐵啟動(dòng)(dong)力較(jiao)大，不需(xu)要專(zhuan)門的電(dian)源，吸(xi)合(he)、釋放快(kuai)，動(dòng)(dong)作(zuo)時(shí)問為(wei)0.01~0.03s,其(qi)缺點(diǎn)是若電(dian)源電壓下降15%以(yi)上(shang)，則電(dian)磁鐵吸(xi)力明(ming)顯減小(xiao)，若銜鐵不(bu)動(dòng)(dong)作(zuo)，幹(gan)式電(dian)磁鐵會(huì)(hui)在10~15min後燒(shao)壞線(xian)圈(quan)(濕(shi)式電(dian)磁鐵為(wei)1~1.5h).且沖(chong)擊及噪(zao)聲較(jiao)大.壽(shou)命短，因此(ci)在實(shí)(shi)際使用(yong)中交(jiao)流(liu)電磁鐵允許的切(qie)換(huan)頻(pin)率(lv)壹般為(wei)10次/min。不得(de)超過30次/min。直流電(dian)磁鐵工(gong)作(zuo)較(jiao)可靠(kao).吸(xi)合(he)、釋放動(dòng)(dong)作(zuo)時(shí)間為(wei)0.05~0.08s，允許使用(yong)的切(qie)換(huan)頻(pin)率(lv)較(jiao)高(gao)，壹(yi)般可達(dá)120次/min，zui高(gao)可(ke)達(dá)300次/min，且沖(chong)擊小(xiao)、體積小(xiao)、壽(shou)命長(zhǎng)。但(dan)需(xu)有(you)專(zhuan)門的直流電(dian)源.成本(ben)較(jiao)高(gao)。此(ci)外(wai)。還有(you)壹種整體(ti)電(dian)磁鐵，其(qi)電(dian)磁鐵是直流的，但(dan)電(dian)磁(ci)鐵本(ben)身帶(dai)有(you)整流(liu)器。通人的交(jiao)流(liu)電經(jīng)(jing)帶流(liu)後再供給(gei)直流電(dian)磁鐵。日(ri)前，國外(wai)新研制了壹(yi)種油(you)險(xiǎn)式電(dian)磁鐵，銜鐵和激磁線圈(quan)都(dou)浸(jin)在油(you)液(ye)中上(shang)作.它具(ju)有(you)壽(shou)命更(geng)長(zhǎng)。工(gong)作更(geng)平(ping)穩(wěn)可(ke)靠(kao)等特(te)點(diǎn).但(dan)由於(yu)造(zao)價(jià)(jia)較(jiao)高(gao).應(yīng)用(yong)而不廣(guang)。
Rexroth機(jī)動(dòng)(dong)換(huan)向閥又稱行(xing)程閥，它塵要用(yong)來(lai)控(kong)制(zhi)機(jī)械(xie)運(yùn)(yun)動(dòng)(dong)部(bu)件的行(xing)程.它是借助(zhu)於(yu)安裝在工(gong)作(zuo)臺(tái)(tai)上(shang)的擋(dang)鐵或凸輪(lun)來(lai)迫(po)使閥芯(xin)移動(dòng)(dong)的，從而控(kong)制(zhi)油(you)液(ye)的流(liu)動(dòng)(dong)方向，機(jī)動(dòng)(dong)換(huan)向閥通常是二位的，有(you)二通、二通、四通和五(wu)通幾種。其中二位.二通機(jī)動(dòng)(dong)閥又分(fen)常閉(bi)機(jī)動(dòng)(dong)閥和常開機(jī)動(dòng)(dong)閥兩種。圖5-9(a)為(wei)滾(gun)輪(lun)式二位三(san)通常閉式機(jī)動(dòng)(dong)換(huan)向閥，在圖示(shi)位置。閥芯(xin)2被彈(dan)簧1壓向上(shang)端，油(you)腔(qiang)P和A通。B口關(guān)閉(bi)。當(dāng)擋鐵或凸輪(lun)壓住(zhu)滾(gun)輪(lun)4，使閥芯(xin)2移動(dòng)(dong)到(dao)下端時(shí)(shi)，就使油(you)腔(qiang)P和A斷開，P和B接通，A口關(guān)閉(bi)。
力士樂(le)換向(xiang)閥/REXROTH換向閥樣本是利用(yong)控(kong)制(zhi)油(you)路的壓力油(you)來(lai)改(gai)變(bian)閥芯(xin)位置的換(huan)向(xiang)閥，圖5-10為(wei)三(san)位四通液(ye)動(dòng)(dong)換(huan)向閥的結(jié)構(gòu)圖和職能符(fu)號(hào)口閥芯(xin)是由其(qi)兩端密(mi)封(feng)腔(qiang)中油(you)液(ye)的壓差來(lai)移(yi)動(dòng)(dong)的.當(dāng)控(kong)制(zhi)油(you)路的壓力油(you)從閥右邊(bian)的控(kong)制(zhi)油(you)口K2進(jìn)人滑閥右腔(qiang)時(shí)，K1接通回油(you)，閥芯(xin)向左移動(dòng)(dong)，使壓力油(you)口P與B相通，A與T相通;當(dāng)K1接通壓力油(you)，K2接通回油(you)時(shí)，閥芯(xin)向右移動(dòng)(dong)。使得(de)P與(yu)A相通，B與T相通;當(dāng)K1K2都(dou)通回油(you)時(shí)，閥芯(xin)在兩端彈(dan)簧和定(ding)位套作(zuo)用(yong)下回到(dao)中間位。結(jié)構(gòu)圖如(ru)下：