【作者】 潘腾；

【导师】 刘英林；

【作者基本信息】 太原理工大学 ， 机械设计与理论， 2010， 硕士

【摘要】 虚拟样机技术又称为机械系统动态仿真技术,是一种以计算机建模、仿真为基础的数字化设计方法。其可以针对不同领域和不同的设计要求,综合多学科技术,实现产品的快速设计、性能分析、结构优化等。虚拟样机改变了传统的设计方式,降低了研发周期和研发资本,缩短了产品开发周期,改进了产品设计质量,提高了面向客户和市场需要的能力。采煤机搬运车是煤矿井下搬家倒面时采用的一种新型的无轨辅助运输设备,是成套辅助运输系统设备中关键设备之一。其可以降低工人的劳动强度、节约搬运时间、提高搬运效率。采煤机搬运车的设计中引进防爆低污染型柴油机主机和可靠性高的传动元部件,属国内创新车辆。本课题以TY150型四驱采煤机搬运车(以下简称搬运车)为研究对象,与某厂家的设计同步进行。应用三维CAD软件Unigraphics(简称UG)、虚拟样机分析软件RecurDyn(简称RD)以及有限元分析软件ANSYS,进行了实体建模、动力学仿真、有限元分析等工作。具体内容如下:1.研究各工况下搬运车的牵引力。在UG中建立搬运车的车架的三维简化模型,在RD中的低速履带模块中建立左右行走机构的模型。将车架的三维模型导入RD中进行装配,并添加约束,摩擦等完成虚拟样机的建立。在水泥路面、坚实土路和松散土路三种路况下分别做平路、上坡和原地转弯的动力学仿真,分析得到各工况下的最大转矩和稳定后的平均转矩;将仿真结果与理论计算结果进行对比分析,以验证仿真的正确性;确定各工况下搬运车的牵引力和履带张力;分析得出各路况的阻力系数和转弯系数。2.校核行走机构张紧装置架的强度。对张紧装置进行静力分析,得出其应变与应力,分析其是否满足强度要求。3.校核搬运车车架的强度。对车架进行静力分析和模态分析,分析其是否满足强度要求,判定搬运车是否会发生共振。更多还原

【Abstract】 Virtual prototype technology is called the mechanical system dynamic simulation technology, it is one kind of taking the computer modelling, the simulation as the foundation digitization design method. The technology can aim at different domain and different design requirements,and it synthesized the multi-disciplinary technologies,realize the product rapid designing,the performance analysis,the structure optimization and so on. Virtual prototype change the traditional design way, reduce the research cycle and capital, shorten the product development cycle, improve the product design quality, and enhance facing the customer and market requirement ability.Carrier of coal cutter is a machine for moving the coal cutter and one of the key part complete auxiliary transportation system equipments. It’s a new type of non-rail transportation equipment. The design of the carrier takes advantage of anti-explosive and low polluting diesel engine, and other high reliable transmission parts. It is natioal innovative product.This paper is based on TY150 four drivers Carrier of coal cutter as the research object, and it is carried on with factory.In this paper,UG, RecurDyn and ANSYS are applied to the 3-D model conducting, dynamic simulation and finite element anylasis. The main contents are as follows:1 Research the traction force of four-wheel driving carrier on different working conditions.This paper creats the three-dimensional simplified model of frame in UG,and creats the walking mechanism in slow pedrail module of RD. The three-dimensional simplified model is imported into UG, assembled, and added constraints and friction to complete the virtual prototype.The paper carries on different dynamic simulations of the carrier, level moving, climing and pivotturn, under three circumstances: on the concrete road, on the solid road and on the loose road.Then we obtain the torque and tension curve of sprocket wheels, and find out the maximum torque and average torque from the curve, and aquire the friction coefficient and the turning coefficient on each kind of road state. It also carries on comparing analysis on simulation data with the theoretical calculation results.2 Check the strength of stretching device. We carry on static analysis of stretching device and check out whether strength meet the requirements based on the stress and strain obtained in the analysis.3 Check the strength of frame.Inspect the strength of the frame through static analysis and modal analysis, then check out whether syntony would happen.更多还原