机械 毕业设计 论文 课程设计

目录
1  引言…………………………………………………………………………1
1.1  概述………………………………………………………………………1
1.2  题目的选取………………………………………………………………3
1.3  高压均质机的工作原理…………………………………………………3
2  电机的选择…………………………………………………………………4
2.1 活塞运动的需用力计算………………………………………………… 4
2.2  功率计算…………………………………………………………………4
3  传动结构设计………………………………………………………………5
3.1 基本传动数据计算……………………………………………………… 5
3.2 带传动设计……………………………………………………………… 5
3.3 轴的校核 …………………………………………………………………8
3.4 键的校核 …………………………………………………………………12
3.5 轴承的校核 ………………………………………………………………14
4  均质系统设计………………………………………………………………17
4.1 柱塞泵的设计 ……………………………………………………………17
4.2 均质部分的设计 …………………………………………………………20
5  使用中应注意的事项………………………………………………………29
5.1 曲轴箱内油温过高或主轴承温度过高及处理方法 ……………………29
5.2 压力表指针不稳定，摆动大且浆料流量不足及解决办法 ……………29
5.3 压力表无压力指示或压力指标很低 ……………………………………30
6 高压均质机的具体应用 ……………………………………………………30
结束语………………………………………………………………………… 32
致谢　………………………………………………………………………… 33
参考文献　…………………………………………………………………… 34

本课题设计食品机械中用的高压均质机，它的工作原理是：采用电动机经一级三角带传动减速后,带动曲轴旋转,曲轴推动曲柄使与曲柄铰接的活塞杆带动活塞缸中的活塞在活塞缸中作往复直线运动,从而推动一级液压阀和二级液压阀的作用，产生的力吸、排混合的物质，达到均匀混合的目的。
根据电机的工作环境选择电动机类型，采用卧式安装，防护式电机，鼠笼式三相异步电动机。选择带传动，它具有缓冲、吸振、运行平稳、噪声小、合过载保护等优点，并安装张紧轮。两级齿轮减速，齿轮传动可用来传递空间任意两轴间的运动和动力，并具有功率范围大，传动效率高，传动比准确，使用寿命长，工作安全可靠等特点。动力由电动机输出,通过减速系统传动,把动力输入到执行机构。由于传动系统作 的是回转运动,活塞缸中的液体要在活塞的直线往复运动中实现均质的目的,可以采用曲柄滑块机构,盘行凸轮移动滚子从动件机构,齿轮齿条机构。本课题采用曲柄滑块机构作为本机械的执行机构 。

关键词  活塞 曲柄 曲轴 均质  曲柄滑块

Title     High-pressured viscolizer design                            
                                                     
Abstract
In this topic design food machinery uses the high-pressured viscolizer, its principle of work is: Uses the electric motor after the level V belt transmission deceleration, leads crank revolving, the crank throw crank causes with in the crank hinge connecting rod impetus piston cylinder piston to make the straight reciprocating main motion in the piston cylinder, thus the impetus level hydraulic valve and two level of hydraulic valve function, produces the strength attracts, the row of mix material, achieves the even mix the goal.
According to the electrical machinery working conditions choice electric motor type, uses the horizontal-type installment, the protected electric machine, the mouse cage type three-phase asynchronous motor. The choice belt transmission, it has the cushion, attracts inspires, the movement steadily, the noise small, gathers merits and so on over-load protection, and installs the stretching pulley. Two level of gear reductions, the gear drive available transmits the movements and the power between the spatial willfully two axes, and has the power scope to be big, the transmission efficiency is high, the velocity ratio is accurate, the service life is long, job safety reliable and so on characteristics. The power outputs by the electric motor, through the retrosystem transmission, inputs the power to the implementing agency. Because the transmission system does is the gyroscopic motion, in the piston cylinder liquid must realize the isotropic goal in the piston straight reciprocating motion, may use the crank slide organization, the plate good cam migration roller from the moving parts organization, the gear rack work. This topic uses the crank slide organization to take this machinery the implementing agency.

 
Keywords  Piston  Crank  Isotropic   Crank slide