經(jing)濾油器、隔爆型(xing)(xing)電(dian)(dian)磁(ci)換向(xiang)(xiang)閥、節流(liu)閥、液(ye)(ye)(ye)控(kong)單(dan)向(xiang)(xiang)閥、平(ping)衡閥進入(ru)液(ye)(ye)(ye)缸(gang)下(xia)端，使液(ye)(ye)(ye)缸(gang)的(de)活塞向(xiang)(xiang)上運動，銅(tong)陵起重(zhong)設備，提升(sheng)(sheng)重(zhong)物(wu)，液(ye)(ye)(ye)缸(gang)上端回(hui)油經(jing)隔爆型(xing)(xing)電(dian)(dian)磁(ci)換向(xiang)(xiang)閥回(hui)到油箱。為(wei)使制(zhi)動，防止意外(wai)，增(zeng)加液(ye)(ye)(ye)控(kong)單(dan)向(xiang)(xiang)閥，即液(ye)(ye)(ye)壓鎖，保(bao)證(zheng)在液(ye)(ye)(ye)壓管線意外(wai)爆裂時能安全(quan)自鎖。安裝(zhuang)了(le)超載(zai)聲控(kong)報警器，用以(yi)區別超載(zai)或設備故障(zhang)。升(sheng)(sheng)降(jiang)機是重(zhong)物(wu)或取物(wu)裝(zhuang)置(zhi)沿著導軌升(sheng)(sheng)降(jiang)的(de)起重(zhong)機械(xie)，它包括(kuo)載(zai)人(ren)或載(zai)貨(huo)電(dian)(dian)梯(ti)。升(sheng)(sheng)降(jiang)機雖然(ran)只有(you)一(yi)個升(sheng)(sheng)降(jiang)動作，起重(zhong)設備價格，但機構很(hen)復(fu)雜，特別是載(zai)人(ren)的(de)升(sheng)(sheng)降(jiang)機——電(dian)(dian)梯(ti)，起重(zhong)設備安裝(zhuang)工程，要求有(you)完善的(de)安全(quan)裝(zhuang)置(zhi)和電(dian)(dian)控(kong)裝(zhuang)置(zhi)等。

大多體積(ji)小、重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)量輕、使用(yong)(yong)方便。除電動葫蘆和絞車(che)(che)外，絕大多數(shu)用(yong)(yong)人力驅動，適用(yong)(yong)于工作不繁重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)的(de)場合。它們可以單獨使用(yong)(yong)，有(you)的(de)也可作為起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)(ji)(ji)(ji)(ji)的(de)起(qi)(qi)(qi)(qi)升機(ji)(ji)(ji)(ji)(ji)構。起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)設備趨向是(shi)增進自(zi)動化(hua)程(cheng)度，提高工作效率和使用(yong)(yong)性(xing)能，使操(cao)作更簡(jian)化(hua)、省力和更。臂(bei)架式類型起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)(ji)(ji)(ji)(ji)包括(kuo)汽車(che)(che)起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)(ji)(ji)(ji)(ji)、輪胎(tai)式起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)(ji)(ji)(ji)(ji)、履帶式起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)(ji)(ji)(ji)(ji)、塔式起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)(ji)(ji)(ji)(ji)、門座式起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)(ji)(ji)(ji)(ji)、浮(fu)式起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)(ji)(ji)(ji)(ji)和鐵(tie)路(lu)起(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)(ji)(ji)(ji)(ji)。

隨(sui)著科學(xue)技術(shu)和生(sheng)產的(de)發展(zhan)，起重設(she)(she)(she)(she)備(bei)生(sheng)產廠家，起重設(she)(she)(she)(she)備(bei)在不斷(duan)地完善(shan)和發展(zhan)之中，的(de)電氣、光學(xue)、計算機技術(shu)在起重設(she)(she)(she)(she)備(bei)上得到應用(yong)。起重設(she)(she)(she)(she)備(bei)是一種以間歇作業(ye)方式對(dui)物(wu)料進(jin)行起升、下降、水(shui)(shui)平移(yi)動的(de)搬運機械，起重設(she)(she)(she)(she)備(bei)的(de)作業(ye)通常帶(dai)有重復(fu)循環的(de)性質。配(pei)備(bei)抓(zhua)斗(dou)后(hou)(hou)可(ke)搬運煤炭(tan)、礦石(shi)、糧食之類的(de)散(san)狀物(wu)料，配(pei)備(bei)盛桶后(hou)(hou)可(ke)吊運鋼水(shui)(shui)等(deng)液態物(wu)料。有些起重機械如電梯也(ye)可(ke)用(yong)來載人。