旋转冲击式液压凿岩机箱体特性分析

发布时间：2018-06-16 18:27

本文选题：液压凿岩机箱体 + 建模　；参考：《石家庄铁道大学》2015年硕士论文

【摘要】：液压凿岩机作为多功能钻机的核心工作部件其性能和可靠性直接影响钻机的凿岩效率和整体工作性能。论文以大功率可变速旋转冲击式液压凿岩机为研究对象,重点对其箱体的性能进行设计和研究。液压凿岩机箱体作为整个传动系统的支撑部件,承受来自传动系统的各种载荷,受到扭转力和冲击力的共同作用。为了保证箱体的刚度和强度满足使用要求,减少液压凿岩机的重量,减轻工作臂的负荷,提高钻机的整体性能,有必要利用现代设计方法对液压凿岩机箱体的结构和性能展开研究。论文主要研究内容有:(1)分析和研究旋转冲击式液压凿岩机的结构组成及工作原理,确定其多速工作模式,选取液压凿岩机箱体为研究对象,设计液压凿岩机箱体结构和各传动零件的参数,建立三维实体模型,经过合理的简化,导入到有限元分析软件中,定义材料属性,选择单元类型,然后进行网格划分,定义边界条件及载荷加载方式,最后得到液压凿岩机箱体的有限元模型。(2)对液压凿岩机箱体进行静力学分析,在1L和1V两种不同档位下进行液压凿岩机箱体的有限元结构强度计算,得出相应的等效应变图和最大主应力及等效应力图,计算结果说明液压凿岩机箱体的刚度和强度满足设计要求。(3)对液压凿岩机箱体进行动力学分析,提取液压凿岩机箱体前12阶的模态频率和振型,分析得正常工作下液压凿岩机箱体不会产生共振,并为后面液压凿岩机箱体的冲击分析奠定基础。液压凿岩机箱体受到往复周期冲击力的作用,以隐式动力学计算得液压凿岩机箱体在受到动态力作用下其刚度和强度满足设计要求。通过论文的研究可为液压凿岩机箱体的结构分析提供参考,分析结果可用于相关液压凿岩机箱体的开发和优化设计,同时又能缩短设计周期和降低成本。
[Abstract]:As the core part of multifunctional drilling rig, the performance and reliability of hydraulic drill have a direct impact on drilling efficiency and overall performance. This paper focuses on the design and study of the performance of high power variable speed rotary impact hydraulic rock drill. As the supporting part of the whole transmission system, the hydraulic rock drill box bears all kinds of loads from the transmission system and is subjected to the joint action of torsional force and impact force. In order to ensure that the rigidity and strength of the box body meet the requirements of use, reduce the weight of the hydraulic rock drill, reduce the load of the working arm, and improve the overall performance of the drilling rig, It is necessary to use modern design method to study the structure and performance of hydraulic rock drill box. The main contents of this paper are as follows: (1) analyzing and studying the structure and working principle of rotary impact hydraulic rock drill, determining its multi-speed working mode, selecting the box of hydraulic rock drill as the object of study. Design the box structure of hydraulic drilling machine and the parameters of each transmission part, establish the three-dimensional solid model, introduce it into the finite element analysis software, define the material attribute, select the unit type, and then divide the mesh through reasonable simplification. The boundary condition and load loading mode are defined. Finally, the finite element model of the hydraulic drilling box is obtained, and the static analysis of the hydraulic rock drill box is carried out. In this paper, the finite element structural strength calculation of the hydraulic rock drill box is carried out under two different gears of 1L and 1V, and the corresponding equivalent strain diagram, maximum principal stress and equal effect are obtained. The calculation results show that the stiffness and strength of the hydraulic rock drill box meet the design requirements. (3) the dynamic analysis of the hydraulic rock drill box is carried out, and the modal frequencies and modes of the first 12 steps of the hydraulic rock drill box are extracted. The results show that there is no resonance in the case of hydraulic drilling machine under normal operation, and it lays a foundation for the impact analysis of the box of hydraulic drilling machine. The box of hydraulic drilling machine is subjected to the impact of reciprocating cycle, and the stiffness and strength of the box of hydraulic drilling machine can meet the design requirements under the action of dynamic force by implicit dynamic calculation. The research in this paper can provide a reference for the structural analysis of the hydraulic rock drill box. The results can be used in the development and optimization design of the relevant hydraulic rock drill box, at the same time, it can shorten the design period and reduce the cost.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U455.32

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