锡槽冷却器的驱动机构及其控制电路设计

机械论文编号:JX748  论文字数:13302.页数:36   附CAD图

 目 录
第一章 绪论 1
1.1 浮法玻璃成型工艺过程 1
1.2 本课题的研究意义和主要工作 1
1.3 本章小结 2
第二章  传动结构及工作原理 3
2.1 传动机构的结构 3
2.2 传动机构的工作原理 4
2.3 本章小结 5
第三章  传动机构的设计 6
3.1 传动类型的确定 6
3.2 减速电机的选择 6
3.3 滚子链传动设计计算 7
3.4 传动轴的设计计算 10
3.5 离合器的设计 15
3.6 导向与限位装置的设计 16
3.7 本章小结 20
第四章 控制电路的设计 21
4.1 电气控制电路设计步骤 21
4.2 电气控制电路原理 21
4.3 电气器件的选择 23
4.4 本章小结 28
第五章 创新及总结 29
5.1 创新点 29
 5.1.1 离合器机构 29
 5.1.2 限位与导向装置 30
5.2 全文总结 30
参考文献 31
致 谢 32

摘     要
 
 本课题是研究锡槽出口处的冷却器。具体设计了冷却器的驱动机构和与其相适应的控制电路，使冷却器能够以简单的机械结构实现有效的功能。
 本文首先通过对机械传动的主要形式及其特点进行分析与比较，然后根据链传动具有准确的平均传动比,适宜较大中心距的两平行轴间的传动；张紧力小,作用于轴上的压力较小；对链轮齿形加工误差,链条几何形状误差要求不高；不适宜高速场合等特点，所以采用链传动为传动形式。冷却器的传动机构主要包括减速电机、链轮、链条、传动轴等零部件。传动机构设计方面主要是用减速电机提供转矩输出，通过链传动组件驱动后轮正转或反转从而实现冷却器的前进或后退运动。根据冷却器所要实现的运动方式、对减速电机的保护要求、传动系统的安全性等要求而设计了相应的控制电路系统。控制电路的设计主要是在实现减速电机的正反转输出目标外增设保护、控制元件。本系统采用了自动和人工手动方式来控制冷却器的开车及停车，其工作行程由装在小车的前端和尾部的两组限位开关来控制。该传动系统具有结构简洁，走位精确，操作简单，维护方便的特点。
 
关键词：锡槽冷却器  链传动  控制电路

Transmission Device and Control Circuit Design of Cooler
 
 
 
Abstract
 
 This issue is to research the exit cooler of tin bath. The specific assignment is to design the drive mechanism and control circuit of the cooler, so the cooler can achieve effective function with a simple mechanical structure.
 Firstly, this article carry through the analysis and compare of the main form of mechanical transmission and the characteristics, then according to chain drive have an accurate average of the transmission ratio, and suitable for the larger center distance between two parallel transmission shaft, small force tensioning role in the pressure of the smaller axis. The demand of processing of the sprocket tooth profile error and the geometric shape of the chain errors does not ask for much, suitable for high-speed occasions and such characteristics, so adopt chain drive for the form of the drive mechanism. The Transmission of exit cooler including reducing the assembly of motor, sprocket, chain, shaft and so on. The design of transmission is mainly used reducing motor to provide power, through the chain-driven to achieve rear-wheel drive to make the exit cooler go forward or backward. According to the way of the movement of the exit cooler, protection of the motor, safety of the transmission system, the corresponding control circuit system is needed. Control circuit is mainly designed for the output target of running of the motor moreover to enhance the additional protection, control components. The system takes the automatic and manual methods to control the driving and parking cooler, the distance is controlled by the limit switches which are setting on the cooler of the front and tail. The drive system has a simple structure, positioning accuracy, simple operation, easy maintenance features.
 
Keywords: Tin cooler；Chain Transmission；Control Circuit