起重臂構造型式為小車變幅水平臂架,再往下分又有雙吊點、單dan吊diao點dian和he起qi重zhong臂bi與yu平ping衡heng臂bi連lian成cheng一yi體ti的de錘chui頭tou式shi小xiao車che變bian幅fu水shui平ping臂bi架jia。塔ta吊diao雙shuang吊diao點dian是shi超chao靜jing定ding結jie構gou,單dan吊diao點dian是shi靜jing定ding結jie構gou。錘chui頭tou式shi小xiao車che變bian幅fu水shui平ping臂bi架jia,裝zhuang設she於yu塔ta身shen頂ding部bu,狀zhuang若ruo錘chui頭tou,塔ta身shen如ru錘chui柄bing,不bu設she塔ta尖jian,故gu又you叫jiao平ping頭tou式shi。平ping頭tou式shi的de使shi結jie構gou形xing式shi更geng簡jian單dan,更geng有you利li於yu受shou力li,減jian輕qing自zi重zhong,簡jian化hua構gou造zao等deng優you點dian。小xiao車che變bian幅fu臂bi架jia大da都dou采cai用yong正zheng三san角jiao形xing的de截jie麵mian。
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