液压张紧装置_机械专业毕业论文范文-经管之家官网！

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目 录

1概述..............................................................1
1.1 张紧装置综述...................................................1
1.1.1 张紧装置作用.................................................1
1.1.2张紧装置类型..................................................1
1.2 新型液压张紧装置...............................................2
1.3 液压传动的特点.................................................2
1.3.1优点..........................................................2
1.3.2缺点..........................................................2
2 主要设计参数及方案确定...........................................4
2.1 主要设计要求...................................................4
2.2 方案确定.......................................................4
2.2.1参考方案一....................................................4
2.2.2参考方案二....................................................4
2.2.3参考方案三....................................................6
2.2.4方案对比......................................................6
2.3 确定系统主要参数...............................................7
2.3.1 主要设计参数.................................................7
2.3.2 液压缸的主要参数.............................................7
3 确定液压泵及配套电机.............................................10
3.1 液压泵的选用...................................................10
3.2电动机的选用.....................................................13
4 确定液压系统元件、辅件...........................................15
4.1 选择液压控制阀型号.............................................15
4.2 确定液压辅件...................................................15
4.2.1蓄能器的选用..................................................15
4.2.2过滤器的选用..................................................19
4.2.3 液压管路的设计...............................................20
5 液压缸设计.......................................................23
5.1液压缸的类型和安装形式..........................................23
5.2 液压缸主要零部件结构、材料和技术要求...........................23
5.2.1 缸筒与缸盖....................................................23
5.2.2活塞..........................................................26
5.3 活塞杆的导向套、密封和防尘.....................................28
5.4 排气阀.........................................................29
5.5 油口...........................................................30
5.6密封圈、防尘圈的选用............................................31
5.7 销轴的安装.....................................................31
5.8液压缸的主要性能参数............................................31
6 液压油路板的结构.................................................36
6.1 液压油路板的设计..............................................36
7 油箱及其附件.....................................................40
7.1油箱的用途和分类................................................40
7.2油箱的构造和尺寸................................................40
7.3液压油箱的结构设计..............................................41
8 液压系统的安装、使用和维护.......................................50
8.1 液压系统的安装、试压和调试.....................................50
8.1.1 液压元件的安装...............................................50
8.1.2 管路的安装与清洗.............................................51
8.2 试压...........................................................51
8.3 液压系统的使用和维护...........................................51
结论...............................................................53
参考文献...........................................................54
英文原文...........................................................55
中文译文...........................................................60
致谢...............................................................64

摘 要

本设计主要是带式输送机全自动液压张紧装置的设计。它是在吸收国、内外输送机张紧技术的基础上，根据国内带式输送机的运行特点及要求研制的。它采用比例控制技术及可靠性较高的可编程控制技术，可以对张紧力进行多点控制，根据不同工作情况随时调节张紧力的大小。能最大程度的延长皮带的寿命，大大节约了成本。在设计中，用一个动滑轮使液压缸的行程减少了一半，避免使用行程较长的液压缸，减少了制造液压缸的难度。同时，系统中增加了若干个蓄能器，可以最大限度的吸收液压冲击，减小对皮带的冲击力提高胶带的使用寿命。

关键词：带式输送机; 全自动液压张紧装置; 比例控制; 可编程控制

Abstract

This design is mainly about full automatic hydraulic tension station for belt conveyer. It is designed on the foundation of opening technology in and outside, according to the domestic operation characteristic of belt conveyer and requirement. The equipment is also made on domestic belt-type conveyer movement characteristic and requestment. It uses the proportional control technology and the reliable higher programmable control technology, It may carry on the multi-spots control to strict the strength, adjusts pressing the strength size as necessary according to the different working condition.It can be the greatest degree lengthen the leather belt the life, greatly saved the cost. In the design, It causes the hydraulic cylinder with a movable pulley the stroke to reduce one half, and avoides using a stroke longer hydraulic cylinder.In this way,it reduces difficulty of the hydraulic cylinder’s produce. At the same time, it increases certain accumulators in the system, and limits absorption hydraulic pressure impact,which reduces the leather belt impulse and enhances the adhesive tape’s life.

Key words: Belt-type conveyer, full automatic hydraulic tension station , proportional control, programmable control

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