塔吊廠家哪家好(hao),是建筑工(gong)地上最常(chang)用的(de)一(yi)種(zhong)(zhong)起(qi)重(zhong)設(she)備 又名“塔式(shi)起(qi)重(zhong)機”,以(yi)一(yi)節一(yi)節的(de)接長(高)(簡稱“標準(zhun)節”),用來吊施工(gong)用的(de)鋼(gang)筋、木楞、混凝土、鋼(gang)管等施工(gong)的(de)原材(cai)料。塔吊是工(gong)地上一(yi)種(zhong)(zhong)必不可少的(de)設(she)備。
塔(ta)(ta)(ta)(ta)吊(diao)(tower crane)尖的(de)(de)(de)(de)功(gong)能(neng)是承受臂(bei)(bei)(bei)架(jia)拉(la)繩(sheng)(sheng)及(ji)平(ping)(ping)衡(heng)(heng)(heng)臂(bei)(bei)(bei)拉(la)繩(sheng)(sheng)傳來的(de)(de)(de)(de)上部(bu)荷(he)載,并(bing)通(tong)過(guo)回轉塔(ta)(ta)(ta)(ta)架(jia)、轉臺、承座等的(de)(de)(de)(de)結構(gou)部(bu)件式(shi)(shi)直接通(tong)過(guo)轉臺傳遞(di)給塔(ta)(ta)(ta)(ta)身結構(gou)。自升(sheng)塔(ta)(ta)(ta)(ta)頂有截(jie)錐柱式(shi)(shi)、前傾(qing)或后傾(qing)截(jie)錐柱式(shi)(shi)、人字架(jia)式(shi)(shi)及(ji)斜(xie)撐架(jia)式(shi)(shi)。 凡(fan)是上回轉塔(ta)(ta)(ta)(ta)機均(jun)需設(she)平(ping)(ping)衡(heng)(heng)(heng)重(zhong)(zhong),其(qi)功(gong)能(neng)是支承平(ping)(ping)衡(heng)(heng)(heng)重(zhong)(zhong),用以(yi)構(gou)成設(she)計上所要求的(de)(de)(de)(de)作用方(fang)面與(yu)(yu)(yu)起(qi)重(zhong)(zhong)力矩方(fang)向相(xiang)反的(de)(de)(de)(de)平(ping)(ping)衡(heng)(heng)(heng)力矩。除平(ping)(ping)衡(heng)(heng)(heng)重(zhong)(zhong)外,還(huan)常在(zai)(zai)其(qi)尾部(bu)裝設(she)起(qi)升(sheng)機構(gou)。起(qi)升(sheng)機構(gou)之所以(yi)同平(ping)(ping)衡(heng)(heng)(heng)重(zhong)(zhong)一起(qi)安(an)放在(zai)(zai)平(ping)(ping)衡(heng)(heng)(heng)臂(bei)(bei)(bei)尾端,一則可發(fa)揮部(bu)分配重(zhong)(zhong)作用,二則增大繩(sheng)(sheng)卷筒與(yu)(yu)(yu)塔(ta)(ta)(ta)(ta)尖導輪間的(de)(de)(de)(de)距離,以(yi)利鋼絲繩(sheng)(sheng)的(de)(de)(de)(de)排繞并(bing)避免發(fa)生亂繩(sheng)(sheng)現象。平(ping)(ping)衡(heng)(heng)(heng)重(zhong)(zhong)的(de)(de)(de)(de)用量與(yu)(yu)(yu)平(ping)(ping)衡(heng)(heng)(heng)臂(bei)(bei)(bei)的(de)(de)(de)(de)長(chang)度(du)成反比(bi)(bi)關系(xi),而平(ping)(ping)衡(heng)(heng)(heng)臂(bei)(bei)(bei)長(chang)度(du)與(yu)(yu)(yu)起(qi)重(zhong)(zhong)臂(bei)(bei)(bei)長(chang)度(du)之間又存在(zai)(zai)一定比(bi)(bi)例(li)關系(xi)。平(ping)(ping)衡(heng)(heng)(heng)重(zhong)(zhong)量相(xiang)當可觀(guan),輕(qing)型(xing)塔(ta)(ta)(ta)(ta)機一般(ban)至少要3~4t,重(zhong)(zhong)型(xing)的(de)(de)(de)(de)要近30t。