低姿态岸边集装箱起重机桁架大梁轨道与结构间隙补偿技术

Track Structure Gap Compensation Technology of Truss Girder of Low-profile Quayside Container Crane

低姿态岸边集装箱起重机的桁架大梁滑移轨道和小车轨道的贴合面存在不规则的窄缝间隙,会引起大梁和小车的运行振动,诱发大梁结构焊缝外部或内部产生延迟裂纹等缺陷。为了解决该问题,依据经典流体力学直管道阻力公式计算,设计了一套加注系统,选用柱塞泵作为压力设备,将环氧树脂注入密封的滑移轨道;同时设置围挡用常压方式填充环氧树脂于非密封的小车轨道。2种不同的施工工艺均可以补偿轨道和大梁承轨梁之间的不规则的窄缝间隙。

There are irregular narrow gaps between the sliding track of the truss girder and the trolley track of the low-profile quayside container crane,which will cause the running vibration of the girder and the trolley,and induce defects such as delayed cracks on the outside or inside of the weld seam of the girder structure.In order to solve this problem,a set of filling system is designed according to the calculation of the resistance formula of straight pipes in classical fluid mechanics.The plunger pump is selected as the pressure equipment,and epoxy resin is injected into the sealed sliding track;at the same time,the epoxy resin is filled in the non-sealed trolley track to set the enclosure with normal pressure.Both of the two different construction techniques can compensate for the irregular narrow gap between the track and the girder-supporting beam.