毕业论文移动版

摘要由于采掘深度增加，深部巷道出现了很多由压力引起的问题，而巷道底板成了支护中的短板，又或底板封闭结构的支护没形成，导致支护没达到预期，更有甚者会出现失效的支护，给开采带来诸多安全问题。根本原因是我国还没有能力生产出性能好的锚杆钻机在高应力软岩中有效地打巷道底板锚杆眼，导致加固底板围岩没有明显效果。针对该问题，本文设计了一种具有履带行走功能的全液压底板锚杆钻机。73846

根据具体工况需求，确定了全液压底板锚杆钻机动力源和行走方式，严格要求对总体的技术方案，来设计整机结构。设计计算并确定履带行走装置的关键参数。确定用速度倍增机构——液压油缸-链条设计钻进系统，并进行了链条链轮等结构设计和的关键参数计算与选型。液压部分，履带式的底板锚杆钻机的液压系统为最终方案。把该系统细分为履带行走回路、回转回路和油缸回路三个基本回路，并对其原理进行了分析。最后，以常规运算法对各系统主要元件进行设计计算及选型。 

用ANSYS软件中的有关模块，分析建立的钻架模型，主要是静力学和模态方面。钻架的等效应力云图可通过静力学分析得到，总变形位移云图也是。它们能够有效反应钻架的应力和位移的变化情况。钻架前九阶固有频率和振型图可以通过模态分析得到。分析结果充分表明，钻架的固有频率都在共振范围之外。

该论文有图26幅，表6个，参考文献40篇。

毕业论文关键词：全液压  履带式  底板支护  锚杆钻机

Hydraulic System Design And Structure Optimization Of The Bottom Plate Bolt Drilling Machine

Abstract The problems of high voltage, high seepage pressure and the unstable in the long time work appear in the deep road way with the increase of mining depth. Sometimes the roadway support is not an enclosed construction.The power supply and walking style of the full hydraulic floor roof bolter is determined and clear requirements for the overall technical scheme is put forward and the machine structure design is made. The main technical parameters of the drilling rig is calculated and determined and on this basis the crawler walking device of the key parameter design is calculated.

For drilling system part, the hydraulic oil cylinder - chain multiplication drilling way is determined and the structure design and the chain sprocket key parameter selection is calculated. For hydraulic system part, the crawler plate roof bolter hydraulic system is designed. The hydraulic system is pided into three basic circuit: crawler walking circuit, rotary loop and oil cylinder loop. And the hydraulic system principle is analysed. Finally, hydraulic system key element and auxiliary element selection is made by the conventional calculation which provide the basis for the initial value selection for the dynamic simulation in the subsequent chapter.

The established drill stand entity model statics and modal is analysed by using the corresponding module in the software ANSYS. Through the statics analysis, the drill frame of equivalent stress nephogram and total deformation displacement nephogram is obtained, which intuitively shows the stress distribution and displacement change of the drill frame. At the same time, the first nine order natural frequency and vibration mode diagram of the drill stand is obtained through the drill stand modal analysis. The analysis results show that the natural frequency of all the order number the drill stand have are not within the scope of resonance.

There are 26 figures, 6 tables and 40 references in this paper.

Key words: full hydraulic  crawler  floor  roof bolter

目  录

摘  要 I (责任编辑：qin)