卧式颈椎牵引治疗仪设计.rar

卧式颈椎牵引治疗仪设计

机械设计专业相关的毕业设计论文，里面有详细的图纸，ppt,说明书，外文翻译。


目  录
摘  要 3
Abstract 4
前  言 6
第1章  绪论 8
1.1 颈椎介绍 8
1.2 颈椎病的定义 9
1.3 颈椎病的介绍 9
1.4 颈椎病的分类 9
1.5 颈椎病的病理原因 10
1.6 颈椎病的症状 11
1.7 颈椎牵引在颈椎病治疗中的作用 11
1.8 设计目的 12
1.9 设计方案 12
第2章  机械部分设计 13
2.1 受力分析 13
2.2 强度条件的建立 15
第3章  液压传动的设计 20
3.1 液压传动结构原理 20
3.2 液压千斤顶的组成 21
3.2.1动力元件（油泵） 21
3.2.2执行元件（油缸、液压马达） 21
3.2.3控制元件 21
3.2.4辅助元件 21
3.2.5工作介质 21
3.3 液压传动的优缺点 21
3.3.1液压传动的优点 21
3.3.2液压传动的缺点 22
3.4 液压传动结构设计 22
3.4.1大液压缸设计 23
3.4.2小液压缸的设计 28
3.4.3活塞杆的设计 31
3.4.4油箱（储液缸）及油管的设计 32
3.4.5液压控制阀的设计 32
结  论 34
参考文献 35
致  谢 36

 
摘  要
针对老年人颈椎病设计，采用卧式牵引法。根据人身体平均尺寸180cm的身高，100kg的体重，加上系统自重100kg，从而初选脚杆为内径22.5mm，外径33.5mm的圆管，其材料经受力分析及校核选ZG35即可。而人颈椎在受到150-200N力的牵引下可使得椎间隙有明显变化，治疗效果较好。加上系统力，大液压缸推力要达到220N。再根据人力25N推动小液压缸，经一些列阀和管道带动大液压缸的运动。根据这两工作力选定液压缸内公称压力为1MPa，经计算，小液压缸内径为10mm，大液压缸内径为36mm，小液压缸外径为18mm，大液压缸外径为44mm，其都采用o型密封圈和毛毡圈来密封，尾部安装方式为单耳环结构安装，其端部采用焊接连接。而其小活塞杆直径是6mm，大活塞杆直径是28mm，与活塞的连接方式都是半环连接，端部都采用外螺纹结构，而活塞杆采用45号刚，活塞采用耐磨铸铁。
关键词：颈椎病、牵引、液压缸、活塞杆、活塞。
 
Abstract
For the elderly cervical spondylosis design, adopts the horizontal traction method. According to the body height of average size180cm,100kg weight, plus the system weight100kg, and initial foot rod for inner diameter of 22.5mm, diameter33.5mm pipe, the material is subjected to a force analysis and check of ZG35can be selected. While the human cervical spine under 150-200N stress under the traction can make the intervertebral space changes obviously, the treatment effect is good. System coupled with a large force, the force of hydraulic cylinder to achieve 220N. According to the human 25N driving a small hydraulic cylinder, the number of valve and the pipeline drives the movement of the hydraulic cylinders. According to the two selected work force of hydraulic cylinder for nominal pressure1MPa, by calculation, a small hydraulic cylinder diameter is 10mm, a big hydraulic cylinder diameter is 36mm, a small hydraulic cylinder diameter is 18mm, a big hydraulic cylinder diameter is 44mm, its use of O type sealing ring and a felt ring seal, rear mounting means for a single earring structure installation, its ends are connected by welding. The small piston rod diameter is 6mm, the large piston rod diameter is 28mm, and the piston connection way is half ring connecting, end with an external thread structure, and the piston rod adopts45 just, piston made of the wear resistant cast iron.
Key words: cervical spine, traction, Hydraulic cylinder, Piston rod, Piston.