支撑掩护式液压支架总体方案及底座设计.rar

毕业论文标准WORD格式排版 共 74页 24725字 附底座.exb 液压支架.exb



摘要

本设计介绍的是煤矿行业中使用的支撑掩护式液压支架和液压支架中一个重要部件底座的设计。支撑式液压支架在煤炭行业是一种非常重的设备，它在采煤工作面中为了防止顶板冒顶，维持一定的间空，保证工人安全和各项工作的正常运行，必须对顶板进行支护。液压支架是以高压液体作为动力的，由液压元件与金属构件组成支护和控制顶板的设备安是实现支撑和切顶、移动液压支架和推移输送机等一整理套工序。

底座的用途是为了支架和其它结构和工作机构提供安全设备的基础，还有为了与前后连杆和掩护梁一起组成四连杆机构和将立柱前后连传递的顶板压力传递给底板。底座又分为分式铰接底座和钢性底座两种。

关键词：液压支架、立柱、底座、连杆。



Abstract

This design introduces the support shield type hydraulic pressure support and the pedestal design which is an important part of the hydraulic pressure support, they are used in the coal mine profession. The hydraulic pressure support in the coal profession is one kind of extremely heavy equipment, it must support and protect the roof, in mining coal working surface, in order to prevent the roof braves to gore, maintain certain space, guarantee the workers’ safety and each work’s normal operation. The hydraulic pressure support takes the power by the high-pressured liquid, the equipment of timbering and controlling the roof is composed by the hydraulic pressure part and the steel work, realizes one whole set working procedures which include the support and cut、the motion of hydraulic pressure support and the process of conveyer and so on.

Not only the pedestal provides the foundation of the safety equipment for the support and other structure operating mechanism, moreover with the front, the rear connecting rod and shields girder compose four link motion gears together, and transmits roof pressure which transmitted by the column front and rear to the bottom plate. The pedestal is divided into the hinged pedestal and the steel pedestal two kinds.

Key words: hydraulic pressure support; column; pedestal; connecting rod。



目录

前言………………………………………………………………………………1

1.液压支架的概述………………………………………………………………2

1.1液压支架的组成和用途 ……………………………………………………2

1.1.1液压支架的组成…………………………………………………………2

1.1.2液压支架的用途………………………………………………………2

1.2液压支架的工作原理……………………………………………………2

1.2.1升柱 …………………………………………………………………2

1.2.2降柱……………………………………………………………………2

1.2.3支架和输送机前移……………………………………………………2

1.3液压支架设计目的、要求和设计支架必要的基本参数……………………3

1.3.1设计目的………………………………………………………………3

1.3.2液压支架的基本要求…………………………………………………4

1.3.3设计液压支架必需的基本参数…………………………………………4

1.4液压支架的选型…………………………………………………………5

1.4.1液压支架的支撑力与承载关系………………………………………5

1.4.2液压支架架型的分类………………………………………………5

1.4.3 液压支架选型原则………………………………………………7

1.4.4 液压支架设计的原始条件……………………………………………8

2.液压支架的整体结构尺寸设计……………………………………………9

2.1液压支架基本技术参数的确定…………………………………………9

2.1.1支护高度………………………………………………………………9

2.1.2支架间距………………………………………………………………10

2.1.3底座长度………………………………………………………………10

2.1.4支护强度………………………………………………………………10

2.2液压支架四连杆机构的确定……………………………………………11

2.2.1四连杆机构的作用……………………………………………………11

2.2.2四连杆机构的几何作图法……………………………………………13

2.2.3几何作图法作图过程………………………………………………14

2.2.4四连杆机构的优选设计法……………………………………………19

2.3液压支架配套设备和顶梁参数的确定…………………………………20

2.3.1采煤机和运输机型号的确定…………………………………………20

2.3.2顶梁的确定……………………………………………………………20

2.3.3对顶梁长度的影响……………………………………………………22

2.3.4顶梁主要尺寸的确定…………………………………………………22

2.4掩护梁的结构及参数的确定……………………………………………24

2.4.1掩护梁的作用和用途……………………………………………24

2.4.2掩护梁的结构型式………………………………………………24

2.4.3掩护梁的参数确定………………………………………………25

2.5立柱及主要参数的确定………………………………………………25

2.5.1立柱布置………………………………………………25

2.5.2立柱主要参数确定………………………………………………27

2.6千斤顶的技术参..