造船門式起重機是工作在造船廠的船塢、船台或平台上進行船體分段吊裝及翻身作業的專用起重設備。
其特點就是起重量和跨度大、高度高。額定起重量至少100t以上，最大可達2500t；跨度一般大於40m，最大可達到約230m；主梁下蓋板離地的高度在40m~100m之間。
youyuzaochuanmenshiqizhongjikuaduda，menjiatongchangcaiyongyicegangxingtuiyicerouxingtuidexingshi，jiyicegangxingzhituiyuzhulianggujie，lingyicerouxingtuitongguorouxingjiaoyuzhulianglianjie。

主梁有單主梁和雙主梁兩種。根據造船工藝要求
，造船門式起重機應具有單吊、雙鉤抬吊
、三鉤抬吊、船體分段空中翻身和空中微量旋轉等多種功能，特別應滿足船體分段的翻身和合攏作業要求。58、造船門機一般設上下兩個小車。上、xiaxiaochefenbiezaigezideguidaoshangxingshi，xiaxiaochekezaishangxiaochexiachuanxing。shangxiaochesheyoulianggeqizhongliangxiangtongdeqishengjigou，diaodianfenbiekuayuzhuliangwaice

，liangtaoqishengjigoukeyifenbiedongzuoyekelianhedongzuo，kewanchengchuantifenduandeshuanggoutaidiaohezhuandong，lianggousheyouhengyijigou，kefenbiehengyi，yiwanchenggongjiandeweidongheweiliangxuanzhuan，zaihelongshikezhunqueduiwei。xiaxiaocheshangshezhiyouzhugouhefugou
，zhugoukedanduqidiao，yekeyushangxiaochedelianggoulianhedongzuowanchengsangoutaidiaohekongzhongfanshen。fugouyibanjinxingyixiexiaojiandeqidiao。