JP72举高喷射消防车臂架变幅机构优化研究  

Optimum Design Research on the Link Mechanism of the JP72 Lifting Jet Fire Truck Boom System

作　　者：郭桐 王佳文 梁英男 彭步雨 刘涛[3] 刘逸群 Guo Tong;Wang Jiawen;Liang Yingnan;Peng Buyu;Liu Tao;Liu Yiqun(Beijing Zhongzhuo Fire Fighting Equipment Co.,Ltd.,Beijing 101300,China;Weihai Guangtai Airport Equipment Co.,Ltd.,Weihai 264200,China;School of Automotive Engineering,Harbin Institute of Technology,Weihai,Weihai 264209,China)

机构地区：[1]北京中卓时代消防装备科技有限公司,北京101300 [2]威海广泰空港设备股份有限公司,山东威海264200 [3]哈尔滨工业大学(威海)汽车工程学院,山东威海264209

出　　处：《机械传动》2024年第12期108-115,共8页Journal of Mechanical Transmission

摘　　要：臂架连杆机构是用于连接臂架与车身的关键机构,对举高喷射消防车的稳定性、安全性和效率等具有重要的影响。通过数学模型和计算机模拟对臂架连杆机构的结构进行优化设计、提高其强度和稳定性,是当下的主流优化方向。采用有限元分析的方法建立数学模型,以使液压缸受力之和最小为优化目标,将其转化为一个数学规划问题。有限元分析得到的初始值难以满足所有工况要求,研究重点转化为优化问题,需要通过迭代逐步优化解决。采用求解约束非线性优化问题最有效的顺序二次规划(Sequential Quadratic Programming,SQP)算法,通过使用fmincon函数实现SQP算法,进行优化设计。经过多次迭代计算优化设计,得到了满足工作要求的设计方案。The boom link mechanism refers to the key mechanism used to connect the boom and the body,which has an important impact on the stability,safety and efficiency of the elevating jet fire truck.Through mathematical models and computer simulations,it is the current mainstream optimization direction to optimize the structure of the boom linkage mechanism and improve its strength and stability.The finite element analysis method was used to establish a mathematical model,and the optimization goal was to minimize the sum of the forces on the hydraulic cylinder,which was transformed into a mathematical programming problem.The initial value,which was obtained in the finite element analysis,was difficult to meet all the design requirements,so the research focus transformed into solving optimization problems,which need to gradually optimize through iterations.The fmincon function was used to realize the sequential quadratic programming(SQP)algorithm,which is one of the most effective methods to solve the constrained nonlinear optimization problems,for the optimal design.After several iterations of calculation and optimization design,the design scheme that met the work requirements was successfully obtained.

关 键 词：臂架连杆机构 液压缸受力之和最小 四连杆机构 SQP 稳定性 

分 类 号：U469.68[机械工程—车辆工程]