XTR260隧道掘进机单螺旋截割头设计与研究

发布时间：2018-05-18 08:35

本文选题：硬岩隧道掘进机 + 截割头　；参考：《中国矿业大学》2017年硕士论文

【摘要】：随着我国现代化建设步伐的加快,国内水利、交通、资源开发等重大项目日益增多,其中隧道工程量巨大,隧道掘进设备需求量剧增。作为掘进岩巷的主力军,悬臂式掘进机通用性强,作业范围广,在降低劳动强度,提高效率,缩短工程周期等方面效果显著,已广泛用于矿山采掘、水利建设、隧道交通、城市地铁等重大工程建设。目前,国内悬臂式掘进机主要用于煤矿井下巷道施工,隧道专用的悬臂式硬岩掘进机产品种类较少,而现有矿用掘进机无法直接用于隧道施工,难以满足国内隧道施工需求。为了适应日益增长的隧道施工需求,突破国外悬臂式硬岩隧道掘进机市场及技术垄断,悬臂式硬岩隧道掘进机的研发迫在眉睫。截割头是掘进机掘进岩巷的核心部件,它对整机工作的可靠性、效率、经济性等都有重要影响,其性能好坏是评价掘进机性能的重要依据。所以,截割头的设计与研究是掘进机研发的核心,而在这方面,国内尚缺乏科学、系统的截割头设计方法及路线,造成截齿载荷、截齿载荷差异及载荷波动较大,截齿寿命低且不一,能耗高,效率低下等不利的结果。隧道专用的硬岩掘进机截割头的设计与研究不足,缺乏足够的理论依据和试验指导,在硬岩掘进机截割头的几何结构参数设计、安装参数、布置参数及工况参数、高硬度岩石研究方面存在不少待解决的问题。为了降低截齿损耗及能耗、提高截割效率,本文以隧道掘进机截割头为研究对象,以不同坚固系数、裂隙不发育的岩石为截割对象,采取Pro/E-Ansys-LS_Dy na3D联合建模求解的技术手段,针对上述问题展开了相关研究工作,主要包括以下内容:(1)研究了岩石破坏准则及掘进机截割头的破岩机理,分析了截割头的结构、安装、布置、工况参数对截割性能的影响,并设计了截割头的整体结构,分析了截割头的运动特性。(2)研究了模拟截割岩石的数值模拟理论,介绍了Pro/E-Ansys-LS_Dyna联合建模求解技术的全过程,深入研究了联合求解技术中的关键问题,确保截割数岩石数值模拟的可靠性和准确性。(3)研究了岩石的物理力学性质,设置了不同硬度岩石的参数;明确了截割性能的评价指标:扭矩及其波动系数、截割比能耗;设计了截割头截割岩石的正交试验,通过正交试验的方差分析研究了螺旋升角及岩石硬度系数对截割性能影响大小;研究了岩石硬度系数对截割性能的影响,确定了截割头最佳的岩石硬度系数匹配。(4)研究了截割头上截齿布置的螺旋线方程,建立了四种螺旋升角的截割头模型;研究了螺旋升角对截割性能的影响;在以截割比能耗、扭矩及其波动系数为优先顺序的评价指标下,确定了不同硬度岩石下的最佳螺旋升角匹配。根据以上研究,设计出了针对于隧道掘进的XTR260掘进机截割头。
[Abstract]:With the quickening pace of modernization in China, the domestic water conservancy, transportation, resource development and other important projects are increasing day by day, in which the amount of tunnel engineering is huge, and the demand for tunneling equipment is increasing dramatically. As the main force in driving rock roadway, cantilever tunneling machine is widely used in mining, water conservancy construction, tunnel traffic and so on. Urban subway and other major projects. At present, the domestic cantilever roadheader is mainly used in the underground roadway construction of coal mine, and there are few kinds of products of the tunnel special cantilever hard rock roadheader, but the existing mine roadheader can not be directly used in the tunnel construction, so it is difficult to meet the domestic tunnel construction demand. In order to meet the increasing demand of tunnel construction and break through the market and technology monopoly of overhanging hard rock tunnel tunneling machine, the research and development of cantilever hard rock tunnel tunneling machine is urgent. Cutting head is the core part of roadway driving by roadheader. It has an important influence on reliability, efficiency and economy of the whole machine, and its performance is an important basis for evaluating the performance of roadheader. Therefore, the design and research of cutting head is the core of the research and development of roadheader. In this respect, there is still a lack of science in our country. The systematic design method and route of cutting head cause the cutting load, the difference of tooth cutting load and the fluctuation of load. The result of low life, high energy consumption, low efficiency and so on. The design and research of the cutting head of the special hard rock tunneling machine is insufficient, and it lacks sufficient theoretical basis and experimental guidance. The geometric structure parameter design, installation parameter, layout parameter and operating condition parameter of the cutting head of the hard rock tunneling machine are designed, installed and arranged. There are many problems to be solved in the study of high hardness rock. In order to reduce the tooth cutting loss and energy consumption and improve the cutting efficiency, this paper takes the cutting head of tunnel tunneling machine as the research object, takes the rock with different solid coefficient and undeveloped fissure as cutting object, and adopts the technical means of Pro/E-Ansys-LS_Dy na3D joint modeling to solve the problem. The related research work is carried out in view of the above problems, including the following contents: 1) the rock failure criterion and the rock breaking mechanism of the cutting head of the roadheader are studied, and the influence of the structure, installation, arrangement and operating condition parameters of the cutting head on the cutting performance is analyzed. The whole structure of the cutting head is designed, and the kinematic characteristics of the cutting head is analyzed. The numerical simulation theory of the simulated cutting rock is studied, the whole process of the Pro/E-Ansys-LS_Dyna joint modeling and solving technology is introduced, and the key problems in the joint solution technology are deeply studied. To ensure the reliability and accuracy of the numerical simulation of cut number rock, the physical and mechanical properties of rock are studied, the parameters of rock with different hardness are set up, the evaluation indexes of cutting performance are defined: torque and its fluctuation coefficient, cutting specific energy consumption; The orthogonal test of cutting rock with cutting head is designed. The influence of spiral angle and rock hardness coefficient on cutting performance is studied by variance analysis of orthogonal test, and the influence of rock hardness coefficient on cutting performance is studied. The optimum rock hardness coefficient matching of the cutting head is determined.) the helical equation of the gear cutting arrangement on the cutting head is studied, the cutting head model of four kinds of helical rising angle is established, the influence of the spiral rising angle on the cutting performance is studied, and the energy consumption of cutting ratio is studied. Under the evaluation index of the first order of torque and fluctuation coefficient, the optimum spiral angle matching under different hardness rock is determined. According to the above research, the cutting head of XTR260 tunneling machine is designed.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U455.31

【参考文献】