danzhuliangxuanbimenshiqizhongjijiegoujiandan，zhizaoanzhuangfangbian
，zishenzhiliangxiao


，zhuliangduoweipianguixiangxingjiajiegou。yushuangzhuliangmenshiqizhongjixiangbi，zhengtigangduyaoruoyixie。yinci
，dangqizhongliangQ≤50t、跨度S≤35m時,可采用這種形式.單主門梁式起重機門腿有L型和C型兩種形式.L型的製造安裝方便,受力情況好,自身質量較小,但是,吊運貨物通過支腿處的空間相對小一些.C型的支腳做成傾斜或彎曲形,目的在於有較大的橫向空間,以使貨物順利通過支腳。