8000kN立柱试验台结构设计毕业设计

中国矿业大学毕业设计任务书

毕业设计题目：8000kN立柱试验台结构设计

摘要

液压支架是现代煤矿综采工作面中的配套支护设备,立柱是其主要结构件。立柱工作的可靠性直接关系到矿井生产的正常化和工人的生命安全。

随着我国煤炭工业的不断发展，国家对安全生产治理力度的加大，对矿用机电设备的检测技术提出了更高的要求。立柱性能检测试验台是进行立柱质量检测的必要设备,是立柱质量监控的保障。

本文设计的立柱试验台能够兼容欧洲标准和国家标准，能够检测单根工作阻力达8500kN的立柱的性能。本文介绍了立柱性能检测的方法、试验台的组成、原理，设计了加载系统和承载框架。

本设计的主要内容：

1. 详细设计了外加载系统、加载液压缸、增压缸、油箱、联结罩、联轴器、承载框架。

2. 选取外加载泵站、大泵组、增压缸、加载液压缸、联轴器、加载缸导向套等零部件进行了绘图。

3. 承载框架部分，用SolidWorks 2007进行建模，并借助于SolidWorks 2007的一款有限元分析工具COSMOS进行了应力分析。

关键词：液压支架立柱；液压加载系统；试验台；

ABSTRACT

In the modern mining the hydraulic support is the necessary ancillary equipment, the legs is one of its main elements. The reliability of the legs directly relates the mine pit production normalized and worker's safe.

Along with China coal industry unceasing development, the government to safety dynamics enlarging in production set a higher request to the mineral electromechanical device examination technology.The legs performance test-bed is the legs quality examination of the fittings is the quality monitoring safeguard of the legs.

The legs test-bed of this article designed can compatible European standard and the national standard.，can examine the legs performance of the working resistance reach 8500kN。This article introduced the method of legs performance examination, the test platform composition, designed the loading system and the load bearing frame.

The main content of this article:

1. This article designed the loading system,the hydraulic cylinder，the turbo-charged cylinder, the pumping station fuel tank, joins the cover, the shaft coupling, the load bearing frame in detail.

2. Selected the pumping station of loading, the big pump group, the hydraulic cylinder, the turbo-charged cylinder, the shaft coupling, the cylinder guidance and so on has carried on the cartography.

3. The design of load bearing frame, with the SolidWorks 2007 carries on the design, and drew support to SolidWorks 2007 section finite element analysis tool COSMOS carried on the stress analysis.

Keywords: The Legs of hydraulic support; Hydraulic Loading System; Test-bed;

目录

1 立柱试验台总体结构方案设计 (1)

1.1课题研究背景和意义 (1)

1.2立柱试验台检测项目和实验方法 (1)

1.3拟定试验台总体结构方案 (3)

2 外加载液压系统设计 (5)

2.1液压技术简介 (5)

2.1.1液压系统概述 (5)

2.1.2液压传动的优点 (6)

2.1.3液压技术的缺点 (7)

2.2液压加载系统工况分析及设计要求 (7)

2.3液压加载系统方案设计 (8)

2.3.1选择液压动力源 (8)

2.3.2 选择执行元件 (8)

2.3.3 确定控制方式 (8)

2.3.4液压回路设计 (9)

2.3.5 选定液压油类型 (11)

2.3.6系统压力、流量的调定和测量 (12)

2.4拟定外加载系统原理图 (12)

2.5加载液压缸主要参数计算 (14)

2.5.1初选液压缸工作压力 (14)

2.5.2确定液压缸的主要结构尺寸 (14)

2.5.3 验算最小稳定速度 (15)

2.5.4 活塞杆稳定性验算 (16)

2.6计算系统压力 (17)

2.6.1计算加载缸各工况压力 (18)

2.6.2确定系统供油压力 (18)

2.7计算系统各工况的流量 (18)

2.8液压泵的参数计算与型号选择 (19)