1、關(guan)于起重(zhong)機(ji)械的晉(jin)升(sheng)，要(yao)選(xuan)用常閉(bi)式(shi)電(dian)力液(ye)(ye)壓(ya)推動(dong)(dong)(dong)器，關(guan)于水平行走的車輛等設(she)(she)備，為了(le)便于操(cao)控動(dong)(dong)(dong)力和(he)精確的泊(bo)車，多(duo)選(xuan)用常開式(shi)電(dian)力液(ye)(ye)壓(ya)推動(dong)(dong)(dong)器。關(guan)于安全性有高度需(xu)要(yao)的機(ji)械，需(xu)設(she)(she)置兩層電(dian)力液(ye)(ye)壓(ya)推動(dong)(dong)(dong)器。
　　2、用(yong)于(yu)起重機起升(sheng)(sheng)組織支持(chi)電(dian)力液壓推動器，或(huo)是(shi)礦井晉升(sheng)(sheng)機的安(an)(an)全電(dian)力液壓推動器，制動轉矩要(yao)符合(he)儲藏，應有(you)安(an)(an)全系數(shu)；用(yong)于(yu)水(shui)平(ping)行走的機械車輛(liang)等，制動轉矩以滿意作業需(xu)要(yao)為(wei)宜(yi)，不(bu)可過大(da)，防止機械設備(bei)的振蕩或(huo)是(shi)零件(jian)的損壞(huai)。