矿用全气动迈步式运输机构的设计与研究

发布时间：2018-05-11 19:22

本文选题：辅助运输 + 气动技术　；参考：《安徽理工大学》2017年硕士论文

【摘要】：气压传动技术已成为机械产业各领域重要组成部分,随着气动技术的迅速发展和广泛的实际应用,新型高性能气动元件及气动控制系统不断出现。本文通过对国内外发展动态的分析和实际调研,发现国内中小型矿井,在井下不能铺设轨道的特殊地段,大型设备或其零部件的运输存在较大的困难,极大地影响了煤矿的生产效率和安全生产。针对以上情况,课题提出了一种矿用全气动迈步式运输机构。全文首先提出了机构安全、高效的设计要求;利用推拉行走的设计原理提出通过两组三足机构交替迈步实现迈步行走的最优方案;完成了迈步式运输机构的结构设计,阐述了具体迈步行走及机构转向的动作原理和控制流程。然后采用线性瞬态动力学对迈步式运输机构模型进行了瞬态动力学分析,分别通过三点固定约束和六点固定约束这两种约束对机构进行了加速度冲击分析,根据仿真结果提出改进方案,通过对改进后结构再次进行了分析验证,根据本课题设计后期的结构改进方案基本完成了样机制作。最后利用PLC控制气动系统实现迈步式运输机构的自动化控制,给出了机构气动系统原理并对执行元件结构参数进行了分析,利用相关气动试验和PLC控制实验对迈步式运输机构的运行进行了验证。迈步式辅助运输机构利用迈步行走原理,采用气动方式实现迈步,并且能实现所需要的转向角度。本机构的实现和应用可大大减轻矿井下特殊地段短距离辅助运输的难度,对提高煤矿生产效率和安全生产起到一定的积极作用。
[Abstract]:Pneumatic transmission technology has become an important part of mechanical industry. With the rapid development of pneumatic technology and extensive practical application, new high-performance pneumatic components and pneumatic control systems are emerging. Based on the analysis of the development trends at home and abroad and the actual investigation, it is found that there are great difficulties in the transportation of large equipment or its parts and components in small and medium-sized mines in China, in special areas where no track can be laid in the underground. Greatly affected the coal mine production efficiency and safety production. In view of the above situation, this paper puts forward a kind of all-pneumatic stepped-type transport mechanism for mining. First of all, the design requirements of mechanism safety and efficiency are put forward, and the optimal scheme is put forward by using the design principle of push-pull walking, and the structure design of the stepping transport mechanism is completed, which is realized by alternating steps of two groups of three-legged mechanisms. The movement principle and control flow of specific walking and mechanism steering are expounded. Then the linear transient dynamics is used to analyze the transient dynamics of the stepping transport mechanism model. The acceleration shock analysis of the mechanism is carried out by the three point fixed constraint and the six point fixed constraint respectively. According to the simulation results, the improved scheme is put forward, and the improved structure is analyzed and verified again, and the prototype is basically completed according to the structural improvement scheme of the later stage of the design of this subject. Finally, the PLC pneumatic control system is used to realize the automatic control of the stepping transport mechanism. The principle of the pneumatic system of the mechanism is given and the structural parameters of the actuator are analyzed. The operation of the stepped-type transportation mechanism is verified by the related aerodynamic test and PLC control experiment. With the help of the principle of walking, the auxiliary transport mechanism can realize the steeplechase by pneumatic method, and can realize the required steering angle. The realization and application of this organization can greatly reduce the difficulty of the short distance auxiliary transportation in the special area under the mine, and play a positive role in improving the production efficiency and safety in the coal mine.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD634

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