带式输送机自动张紧装置的设计.doc

PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 26 PAGE \* MERGEFORMAT I PAGE \* MERGEFORMAT I编码2015-JXLW 专业代码080202-140本科毕业论文（设计） 带式输送机自动张紧装置设计 学 院机械工程学院专 业机械设计制造及其自动化学 号学生姓名指导教师提交日期2015 年 04 月 10 日 摘 要本设计主要是带式输送机的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 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT VABSTRACTThis design is mainly about full automatic hydraulic tension station for belt convey. It is designed on the foundation are of opening technology in and outside, according to the domestic operation characteristic of belt convey and requirement. The equipment is also made on domestic belt-type convey movement characteristic and request. It uses the proportional control technology and the reliable higher programmable control technology. It may carry on the mult-spots control to strict the strength, adjust pressing the strength size as necessary according to the different working condition. It can be the greatest degree lengthen the leather belt the life, great save he cost. In the design, It causes the hydraulic cylinder with a move pulley the stroke to reduce one half, and avoid 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 accumulator in the system, and limits absorption hydraulic press impact, which reduces the leather belt impulse and enhances adhesive tape’s life.Key words: Belt-type convey;Full automatic hydraulic tension station; Proportional control;Programmable control目 录TOC \o 1-3 \h \u HYPERLINK \l _Toc22258 1 绪论 PAGEREF _Toc22258 1 HYPERLINK \l _Toc17790 1.1 张紧装置综述 PAGEREF _Toc17790 1 HYPERLINK \l _Toc10160 1.1.1 张紧装置作用 PAGEREF _Toc10160