大
、中型輪式起重機雙卷筒雙軸式卷揚機構工作原理

這種卷揚機構是大、中型輪式起重機最常用的起升卷揚機構。主、副卷筒分別裝在前後並列布置的兩根軸上，由一個液壓馬達通過減速器集中傳動；如果采用將行星減速器置於卷筒內的結構，則兩個卷筒各需一個液壓馬達分別傳動，這也是工程起重機常用的雙卷筒卷揚機構。

如ＱＹ２０型xing起qi重zhong機ji雙shuang卷juan筒tong雙shuang軸zhou式shi卷juan揚yang機ji構gou。在zai卷juan筒tong軸zhou上shang裝zhuang有you蹄ti式shi離li合he器qi，當dang離li合he器qi作zuo用yong油you缸gang中zhong通tong入ru高gao壓ya油you後hou，蹄ti式shi離li合he器qi張zhang開kai使shi和he卷juan筒tong連lian在zai一yi起qi的de製zhi動dong轂gu脹zhang住zhu
，並bing通tong過guo製zhi動dong轂gu帶dai動dong卷juan筒tong一yi起qi旋xuan轉zhuan。在zai製zhi動dong轂gu外wai圓yuan上shang裝zhuang有you常chang閉bi式shi帶dai式shi製zhi動dong器qi，正zheng常chang情qing況kuang下xia製zhi動dong器qi在zai製zhi動dong油you缸gang彈dan簧huang力li作zuo用yong下xia將jiang卷juan筒tong刹sha住zhu。在zai吊diao鉤gou動dong力li升sheng降jiang時shi，製zhi動dong油you缸gang的de左zuo腔qiang同tong時shi進jin入ru壓ya力li油you，壓ya縮suo彈dan簧huang，使shi製zhi動dong器qi鬆song開kai；dangdiaogouzhonglixiajiangshi，kongzhihuiludeyaliyoujingzhonglixiajiangcaozongfajinruzhidongqizuoqiang，jiangdanhuangyasuo，zhidongqisongzha，tongshiliheqiyouganghehuiyoululiantong
，shiliheqituokai，cishizhidonglijuquankaotaxiazhidongtabanhuode。yincizaibandongzhonglixiajiangcaozongfashi
，bixuxiantaxiaxiangyingdezhidongtaban，yifangsuodiaozhongwushikongerdiaoxia。shuangjuantongshuangzhoushijiegou，juantongchangdujiaoda，kezengjiajuantongderongshengliang，qieyouyulianggejuantongpingxingbuzhi，juanyanggangsishengyinchupianyijiaoshao
，buyiluanrao。tongshi，liheqihezhidongqijunanzhuangzaijuantongwaice
，tiaozheng、維修都較方便。