承德伺服行星減速機的選擇四大原則

文章出處：admin 人氣：發表(biao)時間：2021-01-04 16:11

齒(chi)輪伺服行(xing)星減速(su)機(ji)的(de)選擇原則(ze)，主要是根(gen)據齒(chi)輪減速(su)機(ji)本(ben)身和負載的(de)特點(dian)，以(yi)及電源的(de)性質來選用。在使用過程中，不可隨意更換與齒(chi)輪減速(su)機(ji)銘(ming)牌(pai)不相符的(de)電動機(ji)。

1、根據電源來選

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)的(de)(de)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)有(you)(you)(you)單相(xiang)(xiang)和(he)三(san)相(xiang)(xiang)兩(liang)種，.單相(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)大多(duo)數是(shi)220伏(fu)，而許多(duo)場合(he)也(ye)有(you)(you)(you)采用(yong)12,24,36,42或110伏(fu)的(de)(de)。在(zai)(zai)國外，也(ye)有(you)(you)(you)采用(yong)100伏(fu)或220伏(fu)的(de)(de)。三(san)相(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)多(duo)數采用(yong)三(san)相(xiang)(xiang)380伏(fu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，但也(ye)有(you)(you)(you)采用(yong)36,42或220伏(fu)的(de)(de)三(san)相(xiang)(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)。在(zai)(zai)頻率方面，我國及部分國家采用(yong)50赫，而世(shi)界上如歐美一些國家也(ye)有(you)(you)(you)采用(yong)60赫的(de)(de)。因此(ci)，在(zai)(zai)使用(yong)前(qian)應(ying)首先(xian)認清電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)的(de)(de)使用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(銘牌額定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya))和(he)頻率是(shi)否和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)一致，如果電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)高于或低(di)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)的(de)(de)使用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)太多(duo)，均(jun)會使電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)燒毀。在(zai)(zai)提供(gong)設計時，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)允(yun)許電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)波動(dong)(dong)士5%不影響電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)正(zheng)常工作(zuo)。為(wei)確保電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)能(neng)(neng)正(zheng)常工作(zuo)，又(you)不改變它的(de)(de)性能(neng)(neng)。煤泥烘干機(ji)

2、根據電動機起動情(qing)況來選

對于起動(dong)頻(pin)繁的(de)電(dian)動(dong)機(ji)，即(ji)起動(dong)頻(pin)率(lv)(lv)(lv)為10-20次/分，在選用(yong)電(dian)動(dong)機(ji)時應(ying)適當選用(yong)較(jiao)大容量的(de)電(dian)動(dong)機(ji)。因為電(dian)動(dong)機(ji)起動(dong)時的(de)起動(dong)電(dian)流較(jiao)大，其相(xiang)應(ying)的(de)輸入功(gong)率(lv)(lv)(lv)也就比較(jiao)大，因此(ci)選用(yong)功(gong)率(lv)(lv)(lv)較(jiao)大的(de)電(dian)動(dong)機(ji)會使負載功(gong)率(lv)(lv)(lv)與電(dian)動(dong)機(ji)功(gong)率(lv)(lv)(lv)相(xiang)比就小，所以電(dian)機(ji)的(de)溫(wen)升(sheng)就不致于過高(gao)。

3、根據與負載匹配情(qing)況來(lai)選

選用電(dian)容(rong)運(yun)轉異步電(dian)動機(ji)(ji)時(shi)，其(qi)功(gong)率應(ying)與負(fu)載(zai)功(gong)率大(da)(da)體一致，不能有過大(da)(da)的余(yu)量，因為電(dian)容(rong)運(yun)轉電(dian)動機(ji)(ji)在空載(zai)或接近(jin)空載(zai)時(shi)，其(qi)損耗相對來說就更大(da)(da)，所以溫(wen)(wen)升(sheng)也就比較高，如果長期工作在這種(zhong)情(qing)況下，電(dian)動機(ji)(ji)溫(wen)(wen)月一將有可能超過允許溫(wen)(wen)升(sheng)，加速電(dian)動機(ji)(ji)的絕緣老化，嚴重的有可能導致電(dian)動機(ji)(ji)燒毀。

4、根據負(fu)載的(de)過轉矩(ju)情(qing)況來選

齒輪伺(si)服行星減(jian)速機(ji)在經常出現負(fu)載過轉(zhuan)矩的(de)(de)(de)情(qing)況(kuang)下(xia)，不宜采(cai)用單相電(dian)(dian)限起(qi)動(dong)(dong)(dong)異步電(dian)(dian)動(dong)(dong)(dong)機(ji)和(he)電(dian)(dian)容起(qi)動(dong)(dong)(dong)異步電(dian)(dian)動(dong)(dong)(dong)機(ji)，因為當負(fu)載轉(zhuan)矩比(bi)(bi)電(dian)(dian)動(dong)(dong)(dong)機(ji)的(de)(de)(de)額定(ding)轉(zhuan)矩大時，會(hui)使電(dian)(dian)動(dong)(dong)(dong)機(ji)的(de)(de)(de)轉(zhuan)速有(you)可能降低到75%-80%同步轉(zhuan)速或更低，這時電(dian)(dian)動(dong)(dong)(dong)機(ji)的(de)(de)(de)離心開關(guan)有(you)可能重新閉(bi)合。如果這種情(qing)況(kuang)出現的(de)(de)(de)比(bi)(bi)較多或者每(mei)次(ci)時間延(yan)續(xu)的(de)(de)(de)比(bi)(bi)較長，起(qi)動(dong)(dong)(dong)繞組就(jiu)會(hui)重新投(tou)人工作(zuo)。由于在設計時，電(dian)(dian)動(dong)(dong)(dong)機(ji)的(de)(de)(de)起(qi)動(dong)(dong)(dong)繞組只短時投(tou)人上作(zuo)，電(dian)(dian)流(liu)密度選(xuan)取的(de)(de)(de)比(bi)(bi)較高，若工作(zuo)時間太長，有(you)可能將起(qi)動(dong)(dong)(dong)繞組燒(shao)壞，因此(ci)只能選(xuan)用其它型式的(de)(de)(de)電(dian)(dian)動(dong)(dong)(dong)機(ji)。