門座起重機水平變幅係統

門座起重機大多采用水平變幅係統。

①重zhong物wu和he臂bi架jia係xi統tong各ge自zi的de重zhong心xin在zai變bian幅fu過guo程cheng中zhong幾ji乎hu無wu垂chui直zhi位wei移yi。其qi方fang法fa之zhi一yi是shi靠kao增zeng設she活huo動dong平ping衡heng重zhong來lai平ping衡heng臂bi架jia係xi統tong俯fu仰yang時shi的de合he成cheng重zhong心xin的de升sheng降jiang變bian化hua這zhe種zhong方fang法fa布bu置zhi較jiao方fang便bian，工gong作zuo也ye較jiao可ke靠kao，應ying用yong廣guang泛fan。方fang法fa之zhi二er是shi靠kao臂bi架jia係xi統tong的de機ji構gou特te性xing來lai保bao證zheng變bian幅fu時shi合he成cheng重zhong心xin的de移yi動dong軌gui跡ji接jie近jin水shui平ping線xian


，無wu活huo動dong平ping衡heng重zhong。

②所(suo)吊(diao)重(zhong)物(wu)在(zai)變(bian)幅(fu)過(guo)程(cheng)中(zhong)沿(yan)著(zhe)近(jin)於(yu)水(shui)平(ping)線(xian)的(de)軌(gui)跡(ji)移(yi)動(dong)，可(ke)采(cai)用(yong)補(bu)償(chang)法(fa)和(he)組(zu)合(he)臂(bi)架(jia)法(fa)。補(bu)償(chang)法(fa)是(shi)通(tong)過(guo)特(te)種(zhong)儲(chu)繩(sheng)係(xi)統(tong)在(zai)變(bian)幅(fu)過(guo)程(cheng)中(zhong)自(zi)動(dong)收(shou)放(fang)相(xiang)應(ying)起(qi)升(sheng)繩(sheng)
，以(yi)補(bu)償(chang)臂(bi)架(jia)升(sheng)降(jiang)造(zao)成(cheng)的(de)吊(diao)具(ju)垂(chui)直(zhi)位(wei)移(yi)。組(zu)合(he)臂(bi)架(jia)法(fa)是(shi)依(yi)靠(kao)組(zu)合(he)臂(bi)架(jia)的(de)機(ji)構(gou)特(te)性(xing)保(bao)證(zheng)臂(bi)端(duan)在(zai)變(bian)幅(fu)過(guo)程(cheng)中(zhong)接(jie)近(jin)水(shui)平(ping)移(yi)動(dong)。兩(liang)種(zhong)方(fang)法(fa)都(dou)得(de)到(dao)廣(guang)泛(fan)應(ying)用(yong)。