履帶式起重機主副雙鉤協同作業時額定起重能力如何計算

suizhediaozhuangxingyedebuduanfazhan，lvdaishiqizhongjizhufushuanggouxietongzuoyegongnengbeikaifachulai
，bingguangfanyingyongyuditiejianshedungoujidiaozhuangdengzuoyezhong，weiditieshigongjieshenglediaozhuangchangdi，jiangdilediaozhuangchengben，danshi
，woguoguojiabiaozhunbingmeiyoumingquezhichuzhufushuanggouxietongzuoyeshixumanzudechengzaianquanxishu，yinci，dajiakeyitongguoyixia4點計算履帶式起重機主副雙鉤協同作業時的額定起重能力。

1.副臂決定副鉤的額定起重能力

因yin為wei副fu臂bi在zai主zhu臂bi上shang方fang，副fu臂bi所suo承cheng受shou的de載zai荷he僅jin為wei副fu鉤gou作zuo業ye時shi的de載zai荷he，因yin此ci副fu臂bi受shou力li簡jian單dan，可ke以yi通tong過guo有you限xian元yuan計ji算suan分fen析xi軟ruan件jian對dui副fu臂bi進jin行xing強qiang度du和he剛gang度du的de校xiao核he，同tong時shi考kao慮lv拉la板ban、鋼絲繩等附件的承載能力和回轉支承及整機的傾翻穩定性
，以此作為依據確定副臂的額定起重能力。

2.主臂強度校核考慮主副鉤的協同起重能力

xiangduiyulvdaishiqizhongjiqitashouligongkuang，zhufushuanggouxietongzuoyegongkuangxiazhubiqiangdudejisuan，xuyaokaolvzhugouzuoyeshidezaihehefubichuandidefugouzuoyeshidezaihe
，congbiaomianshangkan，xiangduiyuzhubigongkuangjinzengjialefubigongkuangdezaihe
，danduishijiqingkuangeryan，fugouzuoyebingfeijinfugouedingqizhongliangyigedandudezaihe，ershi0到dao額e定ding起qi重zhong量liang範fan圍wei的de載zai荷he，因yin此ci需xu要yao對dui主zhu臂bi進jin行xing多duo工gong況kuang組zu合he受shou力li分fen析xi計ji算suan，以yi保bao證zheng主zhu臂bi強qiang度du滿man足zu要yao求qiu，進jin而er確que定ding主zhu副fu雙shuang鉤gou協xie同tong作zuo業ye時shi的de起qi重zhong能neng力li。

3.整機傾翻穩定性校核考慮吊裝過程中被吊物體的重心變化

zaizhufugouxietongzuoyeshi
，beidiaowutidezhongxinhuisuizhezhufugouchengzaibilidebianhuaerbianhua，danbeidiaowutidezhongxinbuhuichaochuzhugouxiachuixianhefugouxiachuixianjiedingdekongjianfanwei，yincizhengjiqingfanwendingxingdexiaohejisuanxiangduibijiaojiandan。yizhengjiqingfanwendingxingzuoweipanduanedingqizhongnenglidetiaojianshi，xuyaokaolvzhufugouzuhegongkuangdezaihefenpeiqingkuang，jinerquedingzhufushuanggouxietongzuoyeshideqizhongnengli。

4.主副體雙向壓彎穩定性的校核計算

目前我國相關國標準沒有對起重設備的主副臂組合情況進行設計要求說明，借鑒SAEJ987—2012biaozhunzhongdeyaoqiu，kaolvzhufubizuheshibijianaodudexuyongfanweijixianxingyaganwendingxinganquanxishuhefeixianxingyawanwendingxinganquanxishu，quedingzhufubizuhezhengtibijiawendingxingjuedingdeqizhongxingneng。