200米级齿爬式升船机安装过程中承船厢结构及驱动系统变形仿真

齿爬式升船机承船厢驱动系统需要在承船厢加载条件下进行精确定位、安装,并在空厢工况下承船厢结构变形量满足施工规范要求。考虑主纵梁、安全横梁、驱动横梁、卧倒门、小齿轮托架机构、同步轴系统等,建立200米级齿爬式升船机承船厢及驱动系统的有限元模型,分析安装过程中承船厢底部支承、承船厢悬吊(4. 7 m水深)以及承船厢悬吊(空厢) 3种工况下的承船厢结构与驱动系统安装位置的变形,并提出优化建议。结果表明:安装过程中承船厢主体结构的挠度变化值均在允许范围内,内外侧主减速器底座存在高度差,同步轴Ⅲ两端变形差异较大,同步轴Ⅳ末端靠近承船厢中心的部分变形较大。建议将内侧主减速器底座抬高5. 16 mm,同步轴Ⅲ靠近承船厢中心的锥齿轮箱安装底座抬高10. 49 mm,离同步轴Ⅳ末端最近的固定自调心轴承底座和锥齿轮箱底座抬高24. 32 mm。

Deformation simulation of ship chamber structure and drive system during installation of 200 m-grade gear rack climbing type ship lift

The driving system of the gear rack climbing type ship lift requires accurate positioning and installation under the loading condition,and can adapt to the structural deformation of the chamber under the empty chamber condition.Considering the main longitudinal beam,cross girder for safety mechanism,cross girder for driving,chamber gate,pinion bracket assembly,synchronous shaft system and other structures,we establish the finite element model of the chamber and driving system of 200 m-grade gear rack climbing type ship lift,analyze the deformation of the chamber structure and the installation position of the driving system under the three conditions including the bottom support of the chamber,the suspended of the chamber(4.7 m water depth) and the suspended of the chamber (empty),and propose the optimization suggestions.The results show that the deflection of the main structure of the chamber is within the allowable range during installation,there is a height difference between the inner and outer main reducer bases,the deformation difference between the two ends of the synchronous shaft III is large,and the deformation of the part of the end of the synchronous shaft IV close to the center of the chamber is large.It is recommended that the base of the inner main reducer should be raised by 5.16 mm.The base of the bevel gear box near the chamber center of the synchronous shaft III shall be raised by 10.49 mm.The fixed self-aligning bearing base and bevel gear box base close to the synchronous shaft IV shall be raised by 24.32 mm.