承德伺服行星減速機的選擇四大原則

文(wen)章出處：admin 人氣：發表時(shi)間：2021-01-04 16:11

齒(chi)輪伺服行星減(jian)速機的(de)選擇原則，主要是根據齒(chi)輪減(jian)速機本身和負載的(de)特點，以及(ji)電源(yuan)的(de)性(xing)質來選用。在使用過程中，不(bu)可隨意更換與(yu)齒(chi)輪減(jian)速機銘牌不(bu)相符的(de)電動機。

1、根據電源來選

電(dian)動(dong)(dong)機(ji)的供(gong)電(dian)電(dian)源(yuan)有(you)單相和(he)三(san)(san)相兩種，.單相電(dian)源(yuan)大多(duo)數(shu)是220伏(fu)(fu)，而(er)許多(duo)場合也有(you)采(cai)(cai)(cai)用12,24,36,42或110伏(fu)(fu)的。在(zai)(zai)國(guo)外(wai)，也有(you)采(cai)(cai)(cai)用100伏(fu)(fu)或220伏(fu)(fu)的。三(san)(san)相電(dian)動(dong)(dong)機(ji)多(duo)數(shu)采(cai)(cai)(cai)用三(san)(san)相380伏(fu)(fu)電(dian)源(yuan)，但也有(you)采(cai)(cai)(cai)用36,42或220伏(fu)(fu)的三(san)(san)相電(dian)源(yuan)。在(zai)(zai)頻率方面，我國(guo)及部分(fen)國(guo)家采(cai)(cai)(cai)用50赫，而(er)世(shi)界上(shang)如(ru)歐美一(yi)些國(guo)家也有(you)采(cai)(cai)(cai)用60赫的。因此(ci)，在(zai)(zai)使用前應(ying)首先認清電(dian)動(dong)(dong)機(ji)的使用電(dian)壓(ya)(銘牌額定電(dian)壓(ya))和(he)頻率是否(fou)和(he)電(dian)源(yuan)一(yi)致，如(ru)果電(dian)源(yuan)電(dian)壓(ya)高于或低于電(dian)動(dong)(dong)機(ji)的使用電(dian)壓(ya)太多(duo)，均會使電(dian)動(dong)(dong)機(ji)燒毀。在(zai)(zai)提供(gong)設計時，電(dian)動(dong)(dong)機(ji)允(yun)許電(dian)源(yuan)電(dian)壓(ya)波動(dong)(dong)士5%不(bu)(bu)影(ying)響電(dian)動(dong)(dong)機(ji)正常工(gong)(gong)作。為確(que)保電(dian)動(dong)(dong)機(ji)能正常工(gong)(gong)作，又不(bu)(bu)改(gai)變它的性能。煤泥烘(hong)干機(ji)

2、根據電動機起動情況來選

對于起動(dong)(dong)(dong)頻(pin)繁的(de)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機，即起動(dong)(dong)(dong)頻(pin)率(lv)(lv)為(wei)10-20次/分，在選(xuan)(xuan)用電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機時應適當選(xuan)(xuan)用較(jiao)(jiao)大容量的(de)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機。因為(wei)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機起動(dong)(dong)(dong)時的(de)起動(dong)(dong)(dong)電(dian)(dian)(dian)(dian)流較(jiao)(jiao)大，其相(xiang)(xiang)應的(de)輸(shu)入功(gong)(gong)率(lv)(lv)也就(jiu)比(bi)較(jiao)(jiao)大，因此(ci)選(xuan)(xuan)用功(gong)(gong)率(lv)(lv)較(jiao)(jiao)大的(de)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機會使(shi)負載功(gong)(gong)率(lv)(lv)與電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機功(gong)(gong)率(lv)(lv)相(xiang)(xiang)比(bi)就(jiu)小(xiao)，所以電(dian)(dian)(dian)(dian)機的(de)溫(wen)升就(jiu)不致于過(guo)高(gao)。

3、根據與負(fu)載匹配情況來選(xuan)

選用電(dian)容(rong)運轉(zhuan)異步(bu)電(dian)動(dong)機時(shi)，其功率應與負載功率大體一致，不能有過(guo)(guo)大的(de)余量，因(yin)為(wei)電(dian)容(rong)運轉(zhuan)電(dian)動(dong)機在空載或接近空載時(shi)，其損耗(hao)相對來說(shuo)就(jiu)更(geng)大，所以溫升也(ye)就(jiu)比較(jiao)高，如果長期(qi)工作在這種情況下，電(dian)動(dong)機溫月一將有可能超過(guo)(guo)允許溫升，加(jia)速電(dian)動(dong)機的(de)絕緣老化，嚴重的(de)有可能導致電(dian)動(dong)機燒毀。

4、根據(ju)負載的過轉矩情況來選

齒(chi)輪(lun)伺服行星減速(su)機(ji)(ji)(ji)在經常出現負載過轉矩(ju)的(de)(de)情況(kuang)下，不宜(yi)采用單相(xiang)電(dian)(dian)限(xian)起(qi)(qi)動(dong)異(yi)步電(dian)(dian)動(dong)機(ji)(ji)(ji)和(he)電(dian)(dian)容起(qi)(qi)動(dong)異(yi)步電(dian)(dian)動(dong)機(ji)(ji)(ji)，因為當負載轉矩(ju)比(bi)電(dian)(dian)動(dong)機(ji)(ji)(ji)的(de)(de)額定轉矩(ju)大時，會(hui)使電(dian)(dian)動(dong)機(ji)(ji)(ji)的(de)(de)轉速(su)有(you)可(ke)能(neng)降低到75%-80%同(tong)步轉速(su)或更低，這時電(dian)(dian)動(dong)機(ji)(ji)(ji)的(de)(de)離心(xin)開(kai)關有(you)可(ke)能(neng)重新(xin)閉(bi)合。如果(guo)這種情況(kuang)出現的(de)(de)比(bi)較多或者每次時間(jian)延(yan)續(xu)的(de)(de)比(bi)較長(chang)，起(qi)(qi)動(dong)繞組(zu)就會(hui)重新(xin)投(tou)人工(gong)作(zuo)。由于在設計時，電(dian)(dian)動(dong)機(ji)(ji)(ji)的(de)(de)起(qi)(qi)動(dong)繞組(zu)只短時投(tou)人上作(zuo)，電(dian)(dian)流(liu)密(mi)度選(xuan)(xuan)取的(de)(de)比(bi)較高，若工(gong)作(zuo)時間(jian)太長(chang)，有(you)可(ke)能(neng)將起(qi)(qi)動(dong)繞組(zu)燒壞，因此只能(neng)選(xuan)(xuan)用其它型式的(de)(de)電(dian)(dian)動(dong)機(ji)(ji)(ji)。