一、液壓馬達和電機的區別在哪里

液(ye)壓(ya)(ya)馬達和電動(dong)機最主要(yao)的區別在于(yu)動(dong)力來(lai)(lai)源不一樣，液(ye)壓(ya)(ya)馬達的能(neng)(neng)量來(lai)(lai)源是(shi)(shi)液(ye)壓(ya)(ya)油的壓(ya)(ya)力勢能(neng)(neng)，電動(dong)機的能(neng)(neng)量來(lai)(lai)源是(shi)(shi)電勢能(neng)(neng)。

1、液壓馬達：

液(ye)壓(ya)馬達是液(ye)壓(ya)系統的(de)一種執行元件，它將液(ye)壓(ya)泵提供的(de)液(ye)體(ti)壓(ya)力(li)能轉(zhuan)(zhuan)變(bian)為其輸出軸(zhou)的(de)機(ji)械能（轉(zhuan)(zhuan)矩(ju)和轉(zhuan)(zhuan)速(su)）。

液壓(ya)馬(ma)達(da)(da)亦稱為(wei)油馬(ma)達(da)(da)，主要應用于注塑機械(xie)(xie)、船(chuan)舶(bo)、起揚機、工程機械(xie)(xie)、建筑機械(xie)(xie)、煤(mei)礦機械(xie)(xie)、礦山機械(xie)(xie)、冶金機械(xie)(xie)、船(chuan)舶(bo)機械(xie)(xie)、石油化(hua)工、港口機械(xie)(xie)等(deng)。具有體積小(xiao)、重量輕、結構簡單、工藝性(xing)好、對油液的(de)污染不(bu)敏感(gan)、耐(nai)沖擊和慣性(xing)小(xiao)等(deng)優點。缺點有扭矩(ju)(ju)(ju)脈動較(jiao)(jiao)大、效率較(jiao)(jiao)低、起動扭矩(ju)(ju)(ju)較(jiao)(jiao)小(xiao)（僅為(wei)額定扭矩(ju)(ju)(ju)的(de)60%——70%）和低速穩定性(xing)差等(deng)。

2、電動機：

電(dian)(dian)(dian)動機(ji)(ji)(ji)（Motor）是把電(dian)(dian)(dian)能轉(zhuan)(zhuan)(zhuan)換成(cheng)機(ji)(ji)(ji)械能的(de)一種設備(bei)。它是利用(yong)通(tong)電(dian)(dian)(dian)線(xian)(xian)圈（也就是定子(zi)繞組）產生(sheng)旋(xuan)轉(zhuan)(zhuan)(zhuan)磁(ci)(ci)場(chang)并作(zuo)(zuo)用(yong)于(yu)轉(zhuan)(zhuan)(zhuan)子(zi)（如(ru)鼠籠式閉合鋁框）形成(cheng)磁(ci)(ci)電(dian)(dian)(dian)動力旋(xuan)轉(zhuan)(zhuan)(zhuan)扭矩。電(dian)(dian)(dian)動機(ji)(ji)(ji)按使(shi)用(yong)電(dian)(dian)(dian)源不同(tong)分為直流電(dian)(dian)(dian)動機(ji)(ji)(ji)和交(jiao)流電(dian)(dian)(dian)動機(ji)(ji)(ji)，電(dian)(dian)(dian)力系統中的(de)電(dian)(dian)(dian)動機(ji)(ji)(ji)大部分是交(jiao)流電(dian)(dian)(dian)機(ji)(ji)(ji)，可以是同(tong)步電(dian)(dian)(dian)機(ji)(ji)(ji)或(huo)者是異(yi)步電(dian)(dian)(dian)機(ji)(ji)(ji)（電(dian)(dian)(dian)機(ji)(ji)(ji)定子(zi)磁(ci)(ci)場(chang)轉(zhuan)(zhuan)(zhuan)速(su)與(yu)轉(zhuan)(zhuan)(zhuan)子(zi)旋(xuan)轉(zhuan)(zhuan)(zhuan)轉(zhuan)(zhuan)(zhuan)速(su)不保持同(tong)步速(su)）。電(dian)(dian)(dian)動機(ji)(ji)(ji)主要由(you)定子(zi)與(yu)轉(zhuan)(zhuan)(zhuan)子(zi)組成(cheng)，通(tong)電(dian)(dian)(dian)導線(xian)(xian)在磁(ci)(ci)場(chang)中受(shou)(shou)力運(yun)動的(de)方(fang)(fang)向(xiang)跟電(dian)(dian)(dian)流方(fang)(fang)向(xiang)和磁(ci)(ci)感線(xian)(xian)（磁(ci)(ci)場(chang)方(fang)(fang)向(xiang)）方(fang)(fang)向(xiang)有關。電(dian)(dian)(dian)動機(ji)(ji)(ji)工作(zuo)(zuo)原(yuan)理是磁(ci)(ci)場(chang)對電(dian)(dian)(dian)流受(shou)(shou)力的(de)作(zuo)(zuo)用(yong)，使(shi)電(dian)(dian)(dian)動機(ji)(ji)(ji)轉(zhuan)(zhuan)(zhuan)動。

二、液壓馬達可以代替電機使用嗎

液壓馬(ma)達(da)能否代替電(dian)機(ji)要根(gen)據實際(ji)的情況(kuang)而(er)定(ding)，液壓馬(ma)達(da)的動(dong)(dong)(dong)力(li)(li)來源(yuan)也是要靠電(dian)機(ji)或者發(fa)動(dong)(dong)(dong)機(ji)來提供動(dong)(dong)(dong)力(li)(li)來源(yuan)，通過液壓系(xi)統(tong)泵(beng)閥(fa)轉(zhuan)換后才能驅動(dong)(dong)(dong)液壓馬(ma)達(da)提供動(dong)(dong)(dong)力(li)(li)源(yuan)。至于是使用(yong)液壓馬(ma)達(da)還是電(dian)機(ji)這要根(gen)據實際(ji)的情況(kuang)，如果需要的扭矩大(da)就(jiu)要通過液壓馬(ma)達(da)帶動(dong)(dong)(dong)，如果扭矩一般就(jiu)可以通過電(dian)機(ji)來驅動(dong)(dong)(dong)。