【作者】 安述彪；

【导师】 董长双；

【作者基本信息】 太原理工大学 ， 机械制造及其自动化， 2012， 硕士

【摘要】 在煤炭行业中,煤矿巷道的快速掘进是保证煤炭产量及采掘效率的关键技术,采掘装备及技术水平直接关系到煤矿的生产效率及煤矿安全。目前,国内大中型煤矿的巷道掘进主要的方式是采用掘进机和单体锚杆钻机配套作业,称之为煤巷综合机械化掘进。当前所采用的掘进机械主要是以悬臂式掘进机为主。尽管我国在近年来不断加大对掘进技术的研究力度,并且取得了一些重要成果。但是,与国外的先进设备相比,由国内自主设计生产的掘进机的总体性能参数偏低,在掘进机的控制技术、截割方式、除尘系统及元部件的可靠性等方面还存在着较大的差距。EBZ135掘进机是一种悬臂式掘进机,主要用于煤巷、半煤岩巷以及软岩的巷道、隧道掘进。该掘进机通过截割臂和截割减速器将电动机的扭矩和功率传递到截割头,对岩煤进行截割。截割减速器的结构形式、运转情况等各方面的性能指标将会通过影响截割头的运转而直接影响掘进机的采掘效率、生产能力及机体的稳定性等。因此,截割部减速器在EBZ135掘进机的组成结构中具有重要的地位。由于掘进机的工作空间一般比较狭小,要求掘进机的工作机构应该在保证工作性能及使用要求的前提下使结构尺寸最小。对于悬臂式掘进机而言,应该在保证截割臂的强度等各项安全指标使用性能指标的前提下,减轻截割臂的重量,减小其外围直径。由于截割减速器安装在截割臂内,这就使得截割减速器的预留安装空间变的非常有限。因此,有必要对EBZ135掘进机的截割减速器进行以体积最小为目标的参数优化,使得在保证掘进机使用性能及安全性能的前提下,使截割减速器的体积最小。EBZ135掘进机截割部减速器采用的是NGW二级行星齿轮减速器,本文通过建立该减速器的数学模型及约束条件,运用MATLAB优化工具箱对其进行了参数优化。通过安全校核计算之后,进一步确认了优化参数后的截割减速器达到了各项安全性能要求,并且优化后减速器体积较优化前缩小了22.3%,大大缩小了减速器的体积,减少了制造成本,改善了截割性能。通过运用UG NX7.0对优化后的截割减速器进行实体模型的建立,并对其进行了运动学仿真。通过运动学仿真结果,验证了优化参数后的截割减速器满足实际的使用要求,其各个部件的运动规律符合截割减速器的实际运行轨迹。最后,运用ANSYS Workbench12.0对截割部减速器进行了机构静力学的有限元分析。具体分析计算了减速器在最大静力作用下的结构变形、最大应力等,并与之前的安全校核结果及相关技术要求相比较,验证了优化后的减速器满足强度要求及最大变形尺寸要求。更多还原

【Abstract】 The rapid excavation of the coal tunnel is a key technologies to ensure coal production and extraction efficiency In the coal industry. Mining equipment and technical level is directly related to the productivity and safety of coal mines. At present, the supporting operations of roadheader and th monomer jumbolter is the main roadway excavation way in the Domestic large and medium-sized coal mines,called the coalroad comprehensive mechanized driving,the boomed roadheader is the main Boring machinery. Although our country Continue to increase research efforts on the tunneling technology,and has made some significant achievements in recent years.But, compared with foreign advanced equipment, has the lower overall performance parameters of the roadheader by domestic independent research and develop,and Control Technology、cutting way、dust pelletizing system、the reliability of parts and other aspects, there are still a big gap.EBZ135roadheader is a boomed roadheader, mainly used for roadway and tunnel boring of coal, the semi-coal rock and soft rock roadway. The roadheader transmit the motor torque and power to the cutting head by cutting arm and reducer,to cut the rock and coal.The structure and functioning and other aspects of performance index of the cutting reducer Will directly affect the extraction efficiency、production capacity and the stability of the roadheader by the operation of the cutting head.Therefore,the cutting reducer has an important place in the composition of the EBZ135roadheader. Because roadheader’s working space is Relatively small, therefore, should make the structure of the roadheader’s working part smallest under the premise of guarantee the performance and use requirements.For the boomed roadheader,should reduce the weight and outer diameter of the cutting arm under the premise of guarantee the safety performance index of the cutting arm. As the cutting reducer installed in the cutting arm, which makes reserved installation space of the cutting reducer is very limited.Therefore,the smallest target parameter optimization of EBZ135roadheader’s cutting reducer is necessary to make the minimum volume of the roadheader under the premise of guarantee the safety performance index of the roadheader.The cutting reducer of EBZ135roadheader used is NGW planetary gear reducer.In this paper, completed on the parameter optimization of the reducer through the establishment of the mathematical model and constraints equations of the reducer, by using the MATLAB optimization toolbox. By the calculation of the safety check, further confirmation of the safety performance indicators of the optimized cutting reducer. The volume of the optimized reducer is reduced by22.3%, significantly reducing the volume of the reducer, reduced manufacturing costs, improved cutting performance.Through the use of UG NX7.0established the solid model of the optimized cutting reducer,and conducted kinematics simulation of the solid model.The results of the kinematics simulation verify the optimized cutting reducer to meet the actual requirements, the law of motion of its parts in line with the actual trajectory of cutting reducer.Finally,through the use of UG ANSYS Workbench12.0conducted the structure static finite element analysis of the solid model.Specific analsysed and calculated the structure deformation and maximum stress of the reducer under the action of the maximum static,and Verify the optimized reducer to meet the strength requirements and the maximum deformation of size requirements by compared with the security check results and related technical requirements.更多还原