雙梁起重機在我們日常生活中的應用範圍越來越廣泛
，不斷趨向大型化
、zhuanyehuadeqizhongjishebeiduiyuanquankekaoxingnengyaoqiuyeyuelaiyuegao。duiyuqiaoshiqizhongjishebeiweilegenghaodeqidaobaohuzuoyong
，zaidacheshanganzhuangleanquankaiguan，xiaocheyijizhugoushangshezhiyouanquanbaohuxianweikaiguanyijidiancibaozhaxitong，zhexieanquanzhuangzhidoushiweiqiaoshiqizhongjidegongzuoqidaobaojiahuhangdezuoyong。zaiqiaoshiqizhongjiguanjianbujianhengliang、小車、主(zhu)鉤(gou)等(deng)都(dou)采(cai)取(qu)了(le)限(xian)位(wei)開(kai)關(guan)作(zuo)為(wei)保(bao)護(hu)裝(zhuang)置(zhi)，主(zhu)要(yao)采(cai)取(qu)的(de)是(shi)直(zhi)動(dong)式(shi)的(de)行(xing)程(cheng)開(kai)關(guan)，通(tong)過(guo)移(yi)動(dong)物(wu)體(ti)碰(peng)撞(zhuang)可(ke)動(dong)部(bu)件(jian)讓(rang)開(kai)關(guan)觸(chu)頭(tou)自(zi)動(dong)接(jie)通(tong)或(huo)者(zhe)是(shi)斷(duan)開(kai)，以(yi)此(ci)來(lai)達(da)到(dao)電(dian)路(lu)的(de)通(tong)暢(chang)性(xing)。因(yin)為(wei)橋(qiao)式(shi)起(qi)重(zhong)機(ji)是(shi)屬(shu)於(yu)間(jian)歇(xie)式(shi)作(zuo)業(ye)的(de)機(ji)械(xie)設(she)備(bei)，為(wei)了(le)保(bao)障(zhang)設(she)備(bei)不(bu)停(ting)的(de)停(ting)止(zhi)或(huo)啟(qi)動(dong)功(gong)能(neng)都(dou)設(she)置(zhi)有(you)特(te)定(ding)的(de)製(zhi)動(dong)裝(zhuang)置(zhi)以(yi)防(fang)安(an)全(quan)事(shi)故(gu)的(de)發(fa)生(sheng)。雙(shuang)梁(liang)起(qi)重(zhong)機(ji)的(de)控(kong)製(zhi)核(he)心(xin)是(shi)采(cai)取(qu)可(ke)編(bian)程(cheng)的(de)控(kong)製(zhi)器(qi)，對(dui)限(xian)位(wei)器(qi)、控製器
、kaiguandengdouzhangwoyouzhukongdaquan。zaishezhixiaocheanquanbaohuxianweikaiguanweizhishiyaochongfenkaolvdaoxiaochezhidongzhihouhaixuyaoguanxingxingzouyiduanjuli
，zhiyoujiangxianweikaiguandeweizhianzhuangshidangcainengchongfenfahuidaobaohugongneng。

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