【作者】 黄飞；

【导师】 曹文钢；

【作者基本信息】 合肥工业大学 ， 机械制造及其自动化， 2015， 硕士

【摘要】 本文以32T随车起重机为分析对象,通过查找资料文献和深入研究,对传统理论验证校核后,通过Pro/E和ANSYS Workbench软件对上下回转部分和伸缩臂进行三维实体建模和静力学分析,并结合分析结果对伸缩臂截面和搭接部分分别进行优化设计,最后利用ADAMS仿真软件对整车进行稳定性分析。首先,根据起重机参数和最危险工况进行理论基础计算,分析伸缩臂的载荷、强度、刚度和稳定性。由于传统经验公式比较粗糙,很多公式按经验进行简化,计算精度影响较大,尤其是滑块处的局部应力计算难度太大。故对该随车起重机进行静力学分析,在Pro/E中建立随车起重机的整车三维模型,并通过Workbench进行网格划分、载荷添加、约束处理、求解和后处理,分别对起重机上下回转部分和伸缩臂三个不同工况下进行静力学分析。并判断刚度、强度是否满足要求。其次,对静力学结果进行分析,发现伸缩臂刚度、强度有很大富余,材料没有完全利用。故本文对随车起重机进行进一步地优化设计。根据静力学结果,分析对伸缩臂起重性能影响较大的参数,将这些参数作为优化的输入参数,在满足刚度、强度条件下,使伸缩臂自重下降。通过优化设计,可以得到更合理的结构,以节省生产成本、运输成本等。最后,建立随车起重机整车的虚拟样机,对虚拟样机进行处理,使其按实际工况进行仿真,测量支腿抬起高度,并判断整车是否失稳。通过地面刚度的改变,根据支腿与地面作用力和下陷深度,计算出满足起重机稳定工作的地面条件,以保证整车的稳定工作提供了保证。更多还原

【Abstract】 Taking the32T truck crane as the analysis object in this paper, the model of the upper and lower rotary parts and telescopic arm were established and static analysis through3D modeling software Pro/E and FE-Simulation software ANSYS Workbench after searching the literature, in-depth research and verification of traditional theory. According to the results of the simulation, the cross section and lap part of the telescopic arm was optimized to make a better performance. Stability and reliability of the entire crane was investigated by ADAMS.First, according to the crane parameters and the most dangerous working conditions to calculate the theoretical foundation, to analysis the load, strength, stiffness and stability of telescopic. Because of the traditional empirical formula is a little rough, a lot of formula are simplified by experience, this situation have a greater impact on accuracy, especially the calculation of slider local stress. So we do static analysis on the truck crane, establish a three-dimensional model of the whole truck crane vehicle in Pro/E, and meshing, load add, constraint processing, solving and post-processing through the Workbench. The upper and lower rotary parts and telescopic arm of crane were analyzed separately in statics. And determine whether the stiffness, strength meets the requirements.Second, the results of the static analysis show that the material of the telescopic arm has not been fully utilized for more stiffness and strength. So the further optimization design of the truck crane was conducted in this paper. Several major influence factors on the lifting performance of the telescopic could be found through the static analysis results. The weight of the telescopic has been reduced to make a better structure by optimizing these parameters while the stiffness and strength can be satisfied. The cost of manufacture and transportation can be saved by this optimization.Finally, create a virtual prototype of truck crane vehicle, the virtual prototype was processed to simulate actual working conditions. Measuring the height of the leg lift, and determine whether the vehicle unstable. By changing the stiffness of the ground, according to the leg with the ground forces and subsidence depth, calculated to satisfy the crane stable ground conditions, in order to ensure the stability of the vehicle to provide a guarantee.更多还原