基于起升机构分析的铸造起重机小车架优化研究  

On frame optimization of casting crane trolley based on lifting mechanism analysis

作　　者：王蕾[1] 曹旭阳[1] 肖昊菁 吴刚 孙健 Wang Lei;Cao Xuyang;Xiao Haojing;Wu Gang;Sun Jian

机构地区：[1]大连理工大学机械工程学院,大连116024 [2]大连华锐重工起重机有限公司,大连116000 [3]中冶节能环保有限责任公司,北京100088

出　　处：《起重运输机械》2021年第18期47-52,共6页Hoisting and Conveying Machinery

摘　　要：由于基于传统强度、刚度理论优化的铸造起重机小车架仍具有较大刚度,为了实现小车架轻量化,降低制造成本,将小车架变形量与起升机构传动系统建立联系,引入轴线歪斜角作为小车架结构优化的刚度约束条件,并通过优化结果给出小车架刚度设计推荐值。文中以225 t铸造起重机小车架为例,建立以小车架主要部件板厚为设计变量、以许用应力和轴线歪斜角为约束条件的小车架优化数学模型。结果表明,在满足小车架应力和轴线歪斜角的条件下,小车架减重23.67%,为铸造起重机小车架结构设计及优化分析提供一种可行的办法。In view of the fact that the rigidity of casting crane trolley frame optimized based on the traditional strength and rigidity theory is still relatively large,in order to reduce the weight and manufacturing cost of trolley frame and establish the connection between the deformation of trolley frame and the transmission system of lifting mechanism,the skew angle of axis is introduced as the rigidity constraint factor of trolley frame structure optimization,and the recommended value related to the rigidity design of trolley frame is put forward according to optimization.Taking the trolley frame of a 225 t casting crane as an example,the optimization mathematical model of the trolley frame was established,which takes the thickness of the main components of the trolley frame as design variables and the allowable stress and axis skew angle as constraints.Results show that the weight of the trolley frame is reduced by 23.67%on the premise of satisfying the stress and axis skew angle of the trolley frame,which provides a feasible method for the structural design and optimization analysis of the trolley frame of the casting crane.

关 键 词：铸造起重机 起升机构 小车架 刚度 优化 

分 类 号：TH218[机械工程—机械制造及自动化]