ZY86002550型掩护式液压支架

机械论文编号:JX306 所有图纸,任务书.论文字数:26628.页数:72
目录
1 绪论 ...............................................................1
1.1 液压支架的用途 ...................................................1
1.2液压支架的工作原理 ................................................1
1.3 设计事项 .........................................................2
1.3.1 设计目的 .......................................................2
1.3.2 对液压支架的基本要求 ...........................................3
1.3.3 设计液压支架必需的基本参数 .....................................3
1.4 液压支架的分类 ...................................................4
1.5 液压支架的组成 ...................................................5
1.6 液压支架的主要结构件及其用途..................................... 6
1.6.1 顶梁........................................................... 6
1.6.2 底座........................................................ ...6
1.6.3 掩护梁......................................................... 6
1.6.4 活动侧护板 .....................................................6
1.6.5 连杆........................................................... 7
1.7 液压支架的液压系统 ...............................................7
1.7.1 液压支架传动系统的基本要求..................................... 7
1.7.2 液压支架的液压传动特点 .........................................7
1.8 液压支架的选型................................................... 8
2 液压支架的结构设计  ................................................10
2.1 液压支架的主要尺寸的确定 .........................................10
2.1.1 支架高度和伸缩比............................................... 10
2.1.2 支架间距 .......................................................10
2.1.3 底座长度 .......................................................11
2.1.4 顶梁长度的确定 .................................................11
2.1.5 立柱布置....................................................... 12
2.1.6 通风断面的计算 .................................................13
2.2 各部件结构选择 ...................................................14
2.2.1 顶梁 ...........................................................14
2.2.2 底座 ...........................................................16
2.2.3 立柱 ...........................................................17
2.2.4 推移装置 .......................................................19
2.2.5 护帮千斤顶 .....................................................22
2.3 四连杆结构....................................................... 22
2.3.1 四连杆机构的作用 ...............................................22
2.3.2 四连杆机构设计的要求 ...........................................23
2.3.3 四连杆机构的设计............................................... 24
2.4液压支架的主要技术参数 ............................................33
3液压系统  ...........................................................36
3.1 立柱和千斤顶 .....................................................36
3.2 支架液压阀........................................................37
3.2.1 液控单向阀 .....................................................37
3.2.2 安全阀 .........................................................38
3.2.3 操纵阀......................................................... 38
3.2.4 液压支架液压阀的密封技术分析................................... 39
3.3 液压支架液压原理图............................................... 40
3.4 液压支架的控制方式 ...............................................41
3.4.1 手动控制....................................................... 41
3.4.2 自动控制....................................................... 41
3.5 液压系统安装、调试、保养......................................... 42
3.5.1 安装：......................................................... 42
3.5.2 调试：........................................................ .50
3.5.3 保养：......................................................... 51
4 液压支架的受力分析与校核 ...........................................53
4.1 液压支架的支护性能与外载荷 .......................................53
4.2 液压支架基本技术参数的确定....................................... 54
4.2.1 支护面积....................................................... 54
4.2.2 支护强度....................................................... 54
4.2.3 确定立柱的技术参数 .............................................55
4.2.4 立柱的初撑力 ...................................................56
4.3立柱强度和稳定性验算 ..............................................56
4.3.1立柱缸体强度验算 ................................................56
4.3.2立柱稳定性验算 ..................................................58
4.3.3立柱活塞杆强度验算.............................................. 60
4.4 平衡千斤顶强度校核............................................... 62
5 液压支架的发展趋势..................................................64

结论 .................................................................66
参考文献 .............................................................67
致谢 .................................................................68
附录 .................................................................69

摘   要
     掩护式支架作为上世纪70年代初刚出现的产品，其显著特征是在顶梁末端和底座之间附加有掩护梁。掩护梁一般是倾斜的，铰接在顶梁和底座之间。从运动学讲，它是稳定的，这是掩护式支架最优于框式支架和垛式支架的一点，掩护梁也完全封闭了采空区，从而能够防止破碎顶板岩石掉入支撑工作面。因此，一般来说，掩护式支架的支撑工作面是较清洁的。
本文主要介绍了：液压支架的发展历程及发展趋势；液压支架的组成、作用和分类；液压支架的液压控制系统；液压支架设计的一般步骤；液压支架的操纵、维护、故障分析及处理等。在ZY8600型液压支架的设计过程中，着重对顶梁、底座和立柱进行了分析和设计，同时对液压支架的液压系统进行了介绍。根据其常见失效形式、影响因素及基本设计要求，给出了重要结构件的受力分析、强度和刚度的设计方法。在该支架的四连杆机构设计中，采用了计算机求解。对立柱和平衡千斤顶进行了强度和稳定性效核。
关键词：液压支架、ZY8600、掩护式、结构设计、采煤机械

ABSTRACT

Stand cover of the last century as the early 1970s emerging products, the notable features of the top beam between the terminal and the base of attaching a shield. Cover is generally inclined beams, the hinged roof beams and between the base. Kinematics from the speakers, it is stable, which is the optimal shield in the box-stent and the stent Crib 1:00, Leung also cover is closed goaf, so as to prevent the rock into the broken roof support Face. Therefore, in general, cover Stand Face the support of the cleaner.
This paper describes : hydraulic supports the development process and development trends; Hydraulic support the composition, role and classification; hydraulic supports the hydraulic control system; hydraulic supports the general design steps; hydraulic supports manipulation, maintenance, Fault analysis and processing. In ZY8600-hydraulic support the design process, focusing on the top beam and column base and the analysis and design Meanwhile hydraulic supports the right hydraulic system was introduced. According to their common failure mode, influencing factors and basic design requirements, is an important structure the force. Strength and stiffness of the design method. The stent in the four-bar linkage design, using a computer to solve. Column right balance between Jack and the strength and stability of nuclear efficiency.

Keywords : hydraulic support, ZY8600, shield, structural design, mechanical mining