單天博体育克罗地亚官网welcome行(xing)(xing)吊(diao)是一種很(hen)常見的(de)(de)(de)起(qi)重(zhong)(zhong)機(ji)械，我們都(dou)知道起(qi)重(zhong)(zhong)設(she)備通常結構龐(pang)大(da)，機(ji)構復雜(za)，能完成(cheng)起(qi)升運(yun)(yun)動(dong)(dong)、水平運(yun)(yun)動(dong)(dong)。例(li)如(ru)，橋式起(qi)重(zhong)(zhong)機(ji)能完成(cheng)起(qi)升、大(da)車運(yun)(yun)行(xing)(xing)和(he)小(xiao)車運(yun)(yun)行(xing)(xing)3個(ge)(ge)運(yun)(yun)動(dong)(dong)；門(men)座(zuo)起(qi)重(zhong)(zhong)機(ji)能完成(cheng)起(qi)升、變幅、回轉和(he)大(da)車運(yun)(yun)行(xing)(xing)4個(ge)(ge)運(yun)(yun)動(dong)(dong)。在作(zuo)業(ye)過(guo)程中(zhong)，常常是幾(ji)個(ge)(ge)不同方向(xiang)的(de)(de)(de)運(yun)(yun)動(dong)(dong)同時(shi)操作(zuo)，技術難度較(jiao)大(da)。起(qi)重(zhong)(zhong)機(ji)械所吊(diao)運(yun)(yun)的(de)(de)(de)重(zhong)(zhong)物(wu)(wu)多種多樣，載(zai)荷(he)是變化的(de)(de)(de)。有的(de)(de)(de)重(zhong)(zhong)物(wu)(wu)重(zhong)(zhong)達幾(ji)百噸(dun)乃(nai)至上千(qian)噸(dun)，有的(de)(de)(de)物(wu)(wu)體(ti)長達幾(ji)十(shi)米，形狀(zhuang)(zhuang)也很(hen)不規(gui)則，有散(san)粒、熱融狀(zhuang)(zhuang)態、易燃(ran)易爆危險(xian)物(wu)(wu)品等，吊(diao)運(yun)(yun)過(guo)程復雜(za)而危險(xian)。