一、液壓馬達和電機的區別在哪里

液(ye)壓(ya)(ya)(ya)馬達和電動(dong)機最主(zhu)要的(de)區別(bie)在(zai)于動(dong)力(li)來源不一樣，液(ye)壓(ya)(ya)(ya)馬達的(de)能(neng)量來源是(shi)液(ye)壓(ya)(ya)(ya)油的(de)壓(ya)(ya)(ya)力(li)勢(shi)能(neng)，電動(dong)機的(de)能(neng)量來源是(shi)電勢(shi)能(neng)。

1、液壓馬達：

液壓(ya)馬達是液壓(ya)系統的一種執行(xing)元件，它將液壓(ya)泵提(ti)供的液體壓(ya)力能轉變為其輸出軸的機械能（轉矩和轉速）。

液壓馬達(da)亦稱(cheng)為油(you)馬達(da)，主要應用(yong)于(yu)注(zhu)塑機(ji)(ji)(ji)械(xie)、船舶、起(qi)揚機(ji)(ji)(ji)、工(gong)程機(ji)(ji)(ji)械(xie)、建筑機(ji)(ji)(ji)械(xie)、煤礦機(ji)(ji)(ji)械(xie)、礦山機(ji)(ji)(ji)械(xie)、冶金機(ji)(ji)(ji)械(xie)、船舶機(ji)(ji)(ji)械(xie)、石油(you)化(hua)工(gong)、港口機(ji)(ji)(ji)械(xie)等(deng)。具有(you)體積小、重量輕、結構簡單(dan)、工(gong)藝性好(hao)、對油(you)液的污(wu)染不(bu)敏感(gan)、耐沖擊和慣性小等(deng)優點。缺點有(you)扭(niu)矩脈動較大、效(xiao)率較低(di)、起(qi)動扭(niu)矩較小（僅(jin)為額定(ding)扭(niu)矩的60%——70%）和低(di)速(su)穩定(ding)性差(cha)等(deng)。

2、電動機：

電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)（Motor）是把電(dian)能轉(zhuan)(zhuan)(zhuan)換成機(ji)(ji)(ji)(ji)械(xie)能的(de)一種設(she)備。它(ta)是利用(yong)通(tong)電(dian)線(xian)圈（也就是定(ding)子繞(rao)組(zu)）產生旋(xuan)轉(zhuan)(zhuan)(zhuan)磁(ci)場并作用(yong)于轉(zhuan)(zhuan)(zhuan)子（如鼠(shu)籠(long)式閉合鋁框）形成磁(ci)電(dian)動(dong)(dong)(dong)(dong)力(li)旋(xuan)轉(zhuan)(zhuan)(zhuan)扭矩。電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)按使用(yong)電(dian)源不同分(fen)為直(zhi)流電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)和交流電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)，電(dian)力(li)系統中(zhong)(zhong)的(de)電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)大(da)部分(fen)是交流電(dian)機(ji)(ji)(ji)(ji)，可以是同步電(dian)機(ji)(ji)(ji)(ji)或(huo)者是異步電(dian)機(ji)(ji)(ji)(ji)（電(dian)機(ji)(ji)(ji)(ji)定(ding)子磁(ci)場轉(zhuan)(zhuan)(zhuan)速與轉(zhuan)(zhuan)(zhuan)子旋(xuan)轉(zhuan)(zhuan)(zhuan)轉(zhuan)(zhuan)(zhuan)速不保持同步速）。電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)主要由定(ding)子與轉(zhuan)(zhuan)(zhuan)子組(zu)成，通(tong)電(dian)導線(xian)在磁(ci)場中(zhong)(zhong)受力(li)運動(dong)(dong)(dong)(dong)的(de)方(fang)(fang)(fang)向(xiang)跟電(dian)流方(fang)(fang)(fang)向(xiang)和磁(ci)感線(xian)（磁(ci)場方(fang)(fang)(fang)向(xiang)）方(fang)(fang)(fang)向(xiang)有關。電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)工作原(yuan)理是磁(ci)場對電(dian)流受力(li)的(de)作用(yong)，使電(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)轉(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)(dong)。

二、液壓馬達可以代替電機使用嗎

液(ye)(ye)(ye)壓(ya)馬(ma)(ma)達能否代(dai)替電(dian)機要(yao)根據實際的(de)情況而(er)定，液(ye)(ye)(ye)壓(ya)馬(ma)(ma)達的(de)動(dong)(dong)(dong)力來源也是要(yao)靠(kao)電(dian)機或(huo)者發動(dong)(dong)(dong)機來提供動(dong)(dong)(dong)力來源，通(tong)過(guo)液(ye)(ye)(ye)壓(ya)系統泵閥轉換后才能驅動(dong)(dong)(dong)液(ye)(ye)(ye)壓(ya)馬(ma)(ma)達提供動(dong)(dong)(dong)力源。至于是使(shi)用液(ye)(ye)(ye)壓(ya)馬(ma)(ma)達還是電(dian)機這要(yao)根據實際的(de)情況，如果需要(yao)的(de)扭矩大就(jiu)要(yao)通(tong)過(guo)液(ye)(ye)(ye)壓(ya)馬(ma)(ma)達帶動(dong)(dong)(dong)，如果扭矩一般就(jiu)可以通(tong)過(guo)電(dian)機來驅動(dong)(dong)(dong)。