剪叉式液压升降平台性能分析与结构优化
发布时间：2019-01-08 12:56
【摘要】：剪叉式液压升降平台，作为液压升降平台中的一种重要型式，是一种多功能的起重装卸机械设备，因其结构简单紧凑、操作方便、升降平稳、载重量大、安装维护简单等，在工厂、现代物流、各类高空作业以及各类大型设备的制造及维护中得到了相当广泛的应用。但是，传统生产方式研发制造的升降平台由于缺少理论依据，多为经验生产，其外形较为笨重，各项性能都有待提高，所以通过科学的手段进行分析计算从而对传统升降平台的外形与性能进行优化，得到各方面性能都最优的产品已经迫在眉睫。 本论文通过提供的相应型号剪叉式液压升降平台的外形尺寸与技术参数，对升降平台进行稳定性计算，并确定了相关参数。 利用CAD软件Pro/E建立了实体模型并将其导入ADAMS中，建立样机模型，通过对特定型号的升降平台系统进行动态过程的仿真分析，得到了升降平台在运动过程中的质心位移、质心速度、质心横向速度、质心纵向速度和平台上方各销轴的受力变化以及平台下方各销轴的受力变化。通过分析表明升降平台在正常工况条件下的运动是平稳的，但存在一些速度波动，确定了其产生相应波动的原因。 利用ANSYS软件对剪叉式液压升降平台的剪叉臂进行了有限元法强度分析。在此的基础上，通过ANSYS参数化设计语言APDL，利用其优化设计模块进行结构优化设计。导出各设计变量，状态变量以及目标函数的变化曲线图，，给出了最终的优化结果。结果表明：优化后剪叉臂总体积由原来的6661mm3减少到2291.3mm3，降低了65.6%，这将大大降低生产过程中的材料消耗。
[Abstract]:As an important type of hydraulic lifting platform, shear-fork type hydraulic lifting platform is a kind of multi-functional lifting and handling machinery, because of its simple and compact structure, convenient operation, stable lifting, large load, simple installation and maintenance, etc. It has been widely used in factories, modern logistics, all kinds of high-altitude operations and the manufacture and maintenance of large-scale equipments. However, due to the lack of theoretical basis for the development and manufacture of the lifting platform in the traditional mode of production, most of it is experienced production, and its shape is relatively heavy, and all of its performance needs to be improved. So it is urgent to optimize the shape and performance of the traditional lifting platform through scientific analysis and calculation, and get the product with the best performance in all aspects. In this paper, the stability of the lifting platform is calculated by the shape and technical parameters of the corresponding shear-fork hydraulic lift platform, and the relevant parameters are determined. The entity model is established by using CAD software Pro/E and imported into ADAMS, and the prototype model is established. Through the simulation and analysis of the dynamic process of a specific type of lifting platform system, the displacement of the center of mass in the moving process of the lifting platform is obtained. Centroid velocity, transverse velocity of center of mass, longitudinal velocity of center of mass, force change of pin shaft above platform and force change of pin shaft under platform. The analysis shows that the motion of the platform is stable under the normal working conditions, but there are some velocity fluctuations, and the reason of the corresponding fluctuation is determined. The strength of the shear arm of the hydraulic lifting platform is analyzed by finite element method with ANSYS software. On this basis, the structure optimization design is carried out by ANSYS parametric design language APDL, using its optimization design module. The curves of design variables, state variables and objective functions are derived, and the final optimization results are given. The results show that the total volume of the shearing fork arm is reduced from the original 6661mm3 to 2291.3mm ~ 3, and the total volume of the shearing fork arm is reduced by 65.6mm, which will greatly reduce the material consumption in the production process.
【学位授予单位】：山东轻工业学院
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH211.6
[Abstract]:As an important type of hydraulic lifting platform, shear-fork type hydraulic lifting platform is a kind of multi-functional lifting and handling machinery, because of its simple and compact structure, convenient operation, stable lifting, large load, simple installation and maintenance, etc. It has been widely used in factories, modern logistics, all kinds of high-altitude operations and the manufacture and maintenance of large-scale equipments. However, due to the lack of theoretical basis for the development and manufacture of the lifting platform in the traditional mode of production, most of it is experienced production, and its shape is relatively heavy, and all of its performance needs to be improved. So it is urgent to optimize the shape and performance of the traditional lifting platform through scientific analysis and calculation, and get the product with the best performance in all aspects. In this paper, the stability of the lifting platform is calculated by the shape and technical parameters of the corresponding shear-fork hydraulic lift platform, and the relevant parameters are determined. The entity model is established by using CAD software Pro/E and imported into ADAMS, and the prototype model is established. Through the simulation and analysis of the dynamic process of a specific type of lifting platform system, the displacement of the center of mass in the moving process of the lifting platform is obtained. Centroid velocity, transverse velocity of center of mass, longitudinal velocity of center of mass, force change of pin shaft above platform and force change of pin shaft under platform. The analysis shows that the motion of the platform is stable under the normal working conditions, but there are some velocity fluctuations, and the reason of the corresponding fluctuation is determined. The strength of the shear arm of the hydraulic lifting platform is analyzed by finite element method with ANSYS software. On this basis, the structure optimization design is carried out by ANSYS parametric design language APDL, using its optimization design module. The curves of design variables, state variables and objective functions are derived, and the final optimization results are given. The results show that the total volume of the shearing fork arm is reduced from the original 6661mm3 to 2291.3mm ~ 3, and the total volume of the shearing fork arm is reduced by 65.6mm, which will greatly reduce the material consumption in the production process.
【学位授予单位】：山东轻工业学院
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH211.6
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