毕业论文：矿井气压超前支护设备的研究完整含cad图

1 绪论…………………………………………………………………………1
2 锚杆支护的现状及设计思路的提出…………………………………………3
  2.1 现代矿井支护设备的分析………………………………………………3
2.1.1 国内外矿井支护设备现状与发展趋势…………………………………………3
2.1.2 锚杆支护的特点机理与现状分析……………………………………5
2.1.3 临时采掘支护的现状分析……………………………………………8
2.2国内外超前联合支护发展现状…………………………………………10
3 矿井气压超前支护设备支护模式的建立…………………………………13
  3.1支护模式的提出………………………………………………………13
3.1.1 井下锚网支护工况特点与分析………………………………………13
3.1.2 移动机构模式的提出与分析…………………………………………15
3.1.3 工作机构模式的提出与分析…………………………………………16
3.2 机构承载强度的可行性分析…………………………………………19
  3.3 岩层与锚杆受力强度分析实验………………………………………22
4 新型支架的结构设计及仿真………………………………………………26
4.1 新型支架虚拟样机设计………………………………………………27
4.1.1 基于Solidworks的虚拟设计及装配………………………………27
4.1.2 基于Solidworks的运动仿真模拟…………………………………29
4.2 各工作臂强度有限元分析……………………………………………32
  4.3 机爪的结构设计及强度分析…………………………………………36
4.3.1 机爪的结构特点分析…………………………………………………36
4.3.2 机爪强度的有限元分析………………………………………………37
4.4 气压控制回路的设计与仿真…………………………………………39
4.4.1 各气压缸的计算及选型………………………………………………39
4.4.2 气压控制回路的设计…………………………………………………58
4.4.3 气压控制回路的仿真模拟……………………………………………60
5 新型支架工作特点及效益安全分析………………………………………62
5.1 新型支架的工作特性…………………………………………………62
  5.2 新型超前支架的效益分析……………………………………………63
5.2.1 现代煤矿采掘效益分析………………………………………………63
5.2.2 采用新型支架后效益分析……………………………………………64
  5.3 新型支架的安全性分析………………………………………………65
6 总结…………………………………………………………………………67
7 设计心得体会………………………………………………………………70
参考文献………………………………………………………………………71
翻译部分………………………………………………………………………73
  英文原文……………………………………………………………………73
  中文译文……………………………………………………………………83
致谢……………………………………………………………………………91

矿井支护影响到矿井生产安全和采掘生产效益等诸多问题。当前煤矿生产中使用较多的锚网支护存在着支护速度慢、劳动强度大、临时支护搭建困难等一系列问题，同时在锚网支护过程中还存在一定的安全隐患。

针对以上情况，我们设计研制了井下气压超前支护设备。拟研制的新型超前支架以锚网支护为基础，主要用于煤矿井下锚网支护巷道的掘进工作面，能够实现掘进面前端2-3米空顶区临时支护搭建的自动化，高效化，搭建质量高，适应范围广，可大大提高支护搭建的安全性，提高支护搭建效率和矿藏开采效率。本新型超前支架安装在与顶板锚杆连接的圆形梁上，以圆形梁为轨道，由气压力驱动各工作臂移动，实现悬挂式前后迈步行走。

本新型超前支架设有可进行高度调节的机爪组，以适应巷道顶板的凹凸不平，前端装有变自由度平行四边形支护机构，可实现临时支护搭建的自动化和快速化。该临时支护的搭建过程同时也是锚网支护防护网的搭建过程，可大大提高锚网支护的搭建效率。

关键词：支护； 悬挂式迈步移动； 高度调节

ABSTRACT

 

Mine support to the affected mine production safety and the beneficial result of mining production, and many other issues. At present , there are many issues in the anchor net support , which is the main method used in the coal mine support . Such as the slow speed of the supporting, the labour-intensive, and the difficulty of temporary support .At the same time, we can’t neglect the certain security risks in the anchor net support. For the above, we designed a mine atmospheric pressure ahead of supporting equipment . The new type of supporting equipment is basic on the anchor net support, which is main used in the network supporting of the the heading face in coal mine tunnel. And it can achieve automation and high efficiency of the top provisional air support structures before the end 2-3 meters. The high-quality structures, adapt to a wide range of support, can greatly improve the safety and the efficiency of support structures and improve the mineral exploitation efficiency. This new type of supporting equipment is installed on the circular shape roof beam, which is joined with the anchor. The equipment’s track is the circular shape roof beam. The motion of every working arm and the hoisting of walk-around move are driven by the atmospheric pressure. This new type of supporting equipment with a high degree of regulation can be carried out for the group of claws group, to adapt to the rugged roadway roof. The front-end with Parallelogram-support mechanism whose degrees of freedom can be changed, to achieve the automation and rapid of the temporary support structures. And the process of building the temporary support structures is also the process of building the anchor net-protective network of structures, that can greatly improve the efficiency of building the support network anchor the structures.

Keywords: support; the hoisting of walk-around move; high degree of regulation

 

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