永磁选矿机设计-振动筛设计.doc

永磁选矿机设计-振动筛设计

摘要
    振动筛是选煤厂用的最多的设备之一，主要用于煤的准备筛分以及最终筛分用，但是振动筛又是维修量比较大的设备。随着设计的逐渐完善，自定中心园振动筛能够很好的解决这一问题。本文主要介绍振动筛在选煤厂中的意义以及振动筛的发展现状，描述了本次设计型自定中心园振动筛设计的计算方法依据和步骤.包括振动筛的分类与特点和设计方案的确定；对物料的运动分析，对振动筛的动力学分析及动力学参数的计算，合理设计振动筛的结构尺寸；进行了激振器的偏心块等设计与计算，包括原始的设计参数，电动机的设计与校核；进行了主要零部件的设计与计算，皮带的设计计算与校核，弹簧的设计计算，轴的强度计算，轴承的选择与计算，然后进行了设备维修、安装、润滑及密封的设计

关键词：,振动筛，自定中心，设计依据

CIRCULAR MOTION VIBRATION SIEVE OF AUTO CENTER

ABSTRACT

Vibration sieve is one of the most widely used devices in Coal Preparation Plant. Mainly used in coal preparation and the final screening with screening, But the vibrating screen is larger than the maintenance of equipment. With the gradual improvement of the design ，circular motion vibration sieve of auto center could well solve this problem. This article mainly introduced that vibration sieve in Coal Preparation Plant significance as well as vibration sieve development present situation, described this time has designed  circular motion vibration sieve of auto center design computational method basis and the step, as well as the main vibration sieve part's choice and the comparison, and showed this design characteristic. Including the classification and characteristics of vibrating screen and determination of design; on the movement of materials analysis, Dynamic analysis of vibration sieve and kinetic parameters calculated, rational design of the structure vibrating screen size; carried out such eccentric Vibrator design and calculation, including the original design parameters, motor design and verification; were the main components of the design and calculation, calculation and check of belt design, spring design calculation, shaft strength calculation, bearing selection and calculation , then the equipment maintenance, installation, lubrication and seal design.

 KEYWARDS：，vibration sieve，auto center，design basis

目录

摘要 I
ABSTRACT II
1绪论 1
1.1 筛分的概念 1
1.2 筛分设备的作用 1
1.3 筛分作业的分类 1
1.4 筛分机械设计的意义 2
1.5振动筛设计的原则 3
1.6筛分机械研究的现状 3
1.7 将来的发展趋势 4
2目的依据及说明 4
2.1 自定中心园振动筛设计的目的 4
2.2 设计的依据及参考资料 5
2.3 设计的有关说明 5
3工艺参数的选择与确定 5
3.1 筛面长度及宽度的确定 5
3.2 生产率的确定 5
3.3 振幅和频率的选择 6
3.4 筛面倾角的选择 8
4动力学分析及参数计算 9
振动筛动力学基本理论 9
4.1 参振重量及参振质量的计算 11
4.2 主弹簧刚度计算与选择 12
4.3 激振器偏心质量及其偏心距的验算 13
4.4重心计算 15
5功率计算及电机的选择 16
5.1 筛分机在负荷状态下工作所需功率的计算 16
5.2 电动机的选择 16
5.3 验算电动机的启动转矩 17
6零件的计算 17
6.1 弹簧计算 17
6.2 三角皮带的传动计算 18
6.3 轴强度验算 20
6.4 轴承寿命验算 24
7基型及结构的选择 25
7.1 筛分基型的比较和选择 25
7.2 筛分机结构的选择和确定 25
8、设备合理的更新期 31
9、结论 33
参考文献 34
致谢 35