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1、 沈阳化工大学本科毕业设计题 目： PGG388 散料收送机的三维设计 II院 系： 机械工程 专 业： 机械设计制造及其自动化 班 级： 0701 学生姓名： 指导教师： 论文提交日期： 年 月 日论文答辩日期： 年 月 日摘要摘要散料机械就是针对煤、粮食等散料的运输问题而设计制造的，旨在通过机械化设备代替人工，降低散料成本，增强其竞争能力。本设计是为了实现粮库和矿山等地的散地物料的收取和输送连续化，减小了工作量和中间的运输、储存成本。本文主要阐述了 PGG388 散料收送机的设计过程，着重介绍了一些主要部件的设计和计算。文献综述首先阐述了对于散料收送机优化设计的必要性，及对现有散料收送机产
2、品类型的简介。现有的类型有：皮带运输机又称皮带输送机、螺旋输送机、埋刮板输送机、板式输送机、气力输送机、斗式提升机、振动输送机等。全文主要为 PGG388 散料收送机的结构设计及相关强度计算。首先根据输送量的要求，确定带宽，带长；后计算整机所需功率，确定电机型号。转向滚筒的设计主要是确定滚筒的结构。转向滚筒位于机架尾部， 通过转向辊轴和划块固定在机架上。随后是托辊部分的设计，托辊是安装在机架上支撑平带的，它的机构与转向滚筒类似，只是把密封装置和轴承座改成一个钢制轴套，轴套里面放轴承， 外面用塑料密封。驱动滚筒的设计与转向滚筒类似。这一部分主要对轴及齿轮传动的强度进行强度校核。在 V 带的设计部
3、分，确定了带型、及带轮的中心距。第七章驱动反杠的设计。驱动反杠是减速器部分的中间装置，由轴和齿轮以及带轮组成，负责减速器的二级减速。第八章转向轮设计，转向轮是属于机架的行走部件，同时也负责整体机架的支撑和行走转向作用，它主要由固定支架和轮系组成。固定支架由螺栓连接在机架上，内装转动轴和轴承，顶部用闷盖密封，防止灰尘等杂物进入，降低轴和轴承的使用寿命。这部分的轴主要承受轴向载荷，径向载荷几乎为零，所以选用 45 号钢作为轴的材料，完全能承受所施加的轴向力，这部分轴不用校核。轴承所受的力和轴的完全一样，也是只有轴向力，并且作用在整个轴承的表面。它只有在旋转的时候才受较小的周向力，选用305 型号的
4、深沟球轴承完全能满足要求。为机架结构的设计，确定整个机架采用焊接结构。设计过程使用 UG 参数化建模，通过举例的方法，大体介绍了参数化建模的一般过程。具体例举了齿轮的参数化建模。通过使用 UG 表达式功能，在其中输入齿轮的相关参数及渐开线方程，之后使用样条曲线中的根据方程指令，生成精确的齿轮渐开线，从而绘制齿轮。关键词关键词: : 散料收送机; 输送机; 扒谷机; UGNX; 参数化设计AbstractBulk material machinery is in coal, grain and other bulk material to the transportation problem a
5、nd the design and manufacture, aims to mechanization, reduce equipment to replace artificial bulk material cost and enhance their competitive ability. This design is to realize the grain depot and mining, moved the collection of the material and transportation continuous, reducing the workload and t
6、he middle of the transportation, storage costs. This article mainly expounds the PGG38 x 8 bulk material to the design process of the machine, introduces some of the main parts of the design and calculation. The first chapter literature review first expounded for bulk material to the optimum design
7、of the machine, and the necessity of existing bulk material receive send machine product type of introduction. Existing types are: rubber belt conveyor belt conveyor and say, screw conveyor, buried scraper conveyor, belt conveyor, strength, board type a pattern lift machine, vibration conveyor, etc.
8、 The second chapter to the chapter 9 for PGG38 x 8 bulk material receive send machine and structure design of relevant strength calculation. The second chapter first according to the requirements of the through put, determine the bandwidth, take long; After the power needed, sure calculation motor m
9、odel. The third chapter is to the design of the drum for. Located in the frame to roller, it is by turning the roller and sound control panel fixed in the frame. The fourth chapter roller design, roller is installed in the frame of the conveyor belt, it support institutions and turned to roller is s
10、imilar to the seal device and housings into a steel bearings, axle bush inside put bearing, plastic seal with outside. Chapter 5 is drive roller design and turned to roller is similar. This chapter is mainly to the axis and gear transmission intensity of intensity. The sixth chapter for the design o
11、f the V belt, sure take type, and the center distance of the wheel. Chapter 7 is drive against the design of the poles. Drive the ball reducer is part of the device, the axis and among gear and belt wheels of gear reducer, responsible for the level 2 slowing down. Chapter 8, turning wheels turning w
12、heels is to belong to the design of the frame, and at the same time is also responsible for walking components of the support of the whole frame and walk to effect, and that it mainly by the brackets and linear composition. Fixed bracket by bolt connection on the frame and installed inside the rotat
13、ion axes and bearing, the top cover with boring sealed to prevent dust and debris into, reduce shaft and the service life of the bearings. This part of the shaft mainly bear axial load, radial load is almost zero, so choose as a shaft of 45 steel materials, can bear completely the infliction of axia
14、l force, this section axis dont check. Bearing from the force and the axis in exactly the same, also is only axial force, and in the whole of the bearing surface role. It is only in the rotation by only when smaller weeks to force, choose 305 types of deep groove ball bearing can fully meet the requ
15、irements. Chapter 9 is for the design of the frame structure, make sure the whole frame welding structure. Full text is the last one of the design process of parameterized modeling UG of summarizing, for example, the method of general introduction of parameterized modeling the general process. The l
16、ast chapter, and the specific examples of gear parameterized modeling. By using UG expression function, in which the input gear and related parameters of the equation, and then use involute spline curve equation of instruction, according to generate accurate gear, thus rendering involute gear. Key words: Bulk material receive send
