装载机工作装置机构创新设计方法的研究

发布时间：2018-07-10 11:26

本文选题：装载机 + 创新　；参考：《大连理工大学》2012年硕士论文

【摘要】：铲土运输机械包括推土机、装载机、铲运机、平地机和运土车等几个重要的机种,是工程机械中范围较大用途较广的一个大类。在工程建筑、公共交通、电厂、码头、矿山等现场广泛使用的机械就是装载机,主要原因是在满足作业效率情况下,相对来说装载机的性价比比较高。它可以对煤炭、岩石、硬土等物料进行装取、搬运、卸料和平整散装物料等工作。我公司是我国最早生产轮式装载机的企业之一,公司决定对现有的机械产品进行创新设计,力求在保证产品质量的同时,在产品的外观,结构上有新的突破。针对企业产品升级开发的需要,对装载机工作装置机构进行创新方法研究。本论文以获得装载机工作装置机构新型可行方案为目的,首先介绍了装载机的发展及机构方面的研究,提出本论文的研究方法及步骤。然后介绍了本论文所采用的结构推理方案创新设计方法及机构评价方法。对现有装载机工作装置机构进行了创新设计,在充分研究机构综合理论的基础上,将机构综合问题转化为一般闭链机构综合问题处理,由现有机构运动链一般化得到一个9杆11副运动链；接着运用两自由度运动链型综合得到了36种不同结构类型的9杆11副运动链；根据设计约束评价筛选出满足约束条件的10个再生运动链；将再生运动链具体化为对应的机构,获得9个新型方案解。再运用运动链拓扑特性矩阵对得到的新型方案进行机构的性能评价,得出评价结果,真实的反映了新型方案的优劣特征。此机构创新方法的研究使本企业对其它产品机构方案的创新有规可循,且易于应用和掌握,能方便地获得可供选择的多个方案,还能出现许多不同于原始机构的结构方案,再通过运动链拓扑特性矩阵的分析和评价,对开发出新的机械系统提供了有力的工具。实践证明,这是一种机构方案创新设计的有效方法,为下一步的机构具体部件设计奠定了良好基础。
[Abstract]:Shovel transportation machinery includes bulldozer, loader, scraper, grader and earth conveyer and so on. It is one of the most widely used engineering machinery. Loaders are widely used in engineering buildings, public transportation, power plants, wharves, mines and so on. The main reason is that the loaders have a relatively high performance-to-price ratio under the condition of satisfying the operational efficiency. It can be used for loading, handling, unloading and leveling bulk materials such as coal, rock and hard soil. Our company is one of the earliest enterprises that produce wheel loader in our country, the company decides to carry on the innovation design to the existing mechanical product, strives to guarantee the product quality at the same time, in the product appearance, the structure has the new breakthrough. According to the need of product upgrading and development of enterprises, the innovative method of loader working mechanism is studied. In order to obtain a new feasible scheme of loader working mechanism, this paper firstly introduces the development and mechanism of loader, and puts forward the research methods and steps of this paper. Then it introduces the innovative design method and mechanism evaluation method of the structure reasoning scheme adopted in this paper. On the basis of fully studying the mechanism synthesis theory, the mechanism synthesis problem is transformed into a general closed-chain mechanism synthesis problem. A kinematic chain of 9 rods and 11 pairs is obtained by generalizing the kinematic chain of the existing mechanism, and then 36 different types of kinematic chains of 9 rods and 11 pairs of motion chains are obtained by synthesizing two degrees of freedom kinematic chains. According to the design constraint evaluation, 10 reproducing motion chains satisfying the constraint conditions were selected, and 9 new scheme solutions were obtained by translating the regenerative motion chains into corresponding mechanisms. Then the mechanism performance of the new scheme is evaluated by using the kinematic chain topological characteristic matrix, and the evaluation results are obtained, which truly reflect the advantages and disadvantages of the new scheme. The research of the innovation method of this organization makes the innovation of other product organization schemes rule-based, and easy to use and master, can easily obtain a number of alternative options, but also can appear many different from the original structure of the organization. Through the analysis and evaluation of the topological characteristic matrix of the kinematic chain, a powerful tool is provided for the development of a new mechanical system. It is proved by practice that this method is an effective method for the innovative design of the mechanism scheme, and it lays a good foundation for the design of the specific components of the mechanism in the next step.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH243

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