土壤淋洗机动态性能研究及结构优化设计
发布时间：2019-05-27 22:43
【摘要】：在机械设备的设计过程中,准确地确定电机功率及负载转矩是保证设备能够稳定运行的前提。但是,对于本课题中具有搅拌和离心运动的专用设备,由于其处理对象为不规则运动的物质,因此负载转矩和功率的确定大多采用类比法、经验法去完成,采用这种方法设计的结果与实际值会有很大的偏差。针对上述问题,本论文以土壤淋洗机为例,结合基于组态软件的数据采集方式,进行了动态性能(功率、转矩与转速的关系)研究实验,得到了土壤淋洗机在工作状况下动态性能曲线。在土壤淋洗机动态性能研究试验中,以SDLXJ土壤淋洗一体机为实验平台,设计并建立基于组态软件的数据采集系统,在给定负载的条件下,采集在不同转速时设备实际所需功率和转矩。基于组态软件数据采集系统是由传感级、中间级、终端级三级组成的检测系统。土壤淋洗机的变频器是传感级,采用了先进的矢量控制技术,可以提供其控制电机实时功率、转矩和频率;PLC是中间级,通过MODBUS通讯协议与变频器之间进行通信,将变频器实时数据读取出来;采用目前应用较为广泛的组态软件作为终端级,在组态软件中开发的数据采集监控系统,可方便地进行实验过程监控、接收和存储PLC中的数据。根据动态性能研究结果,对SDLXJ土壤淋洗一体机进行了优化。运用ANSYS软件对机架进行了有限元分析,找到了应力集中和薄弱环节,并进行了加强。本论文研究成果,对类似设备的设计具有参考意义。同时也填补了国内用于污染土壤淋洗实验设备研究的空白。
[Abstract]:In the design process of mechanical equipment, accurate determination of motor power and load torque is the premise to ensure the stable operation of the equipment. However, for the special equipment with stirring and centrifugal motion in this subject, because the object is irregular moving material, most of the load torque and power are determined by analogy method and empirical method. The results designed by this method will deviate greatly from the actual values. In order to solve the above problems, taking the soil washing machine as an example, combined with the data acquisition method based on configuration software, the dynamic performance (the relationship between power, torque and rotating speed) is studied in this paper. The dynamic performance curve of soil washing machine under working condition was obtained. In the research and experiment of dynamic performance of soil leaching machine, a data acquisition system based on configuration software is designed and established with SDLXJ soil leaching machine as the experimental platform. Under the condition of given load, Collect the actual power and torque of the equipment at different speeds. The data acquisition system based on configuration software is composed of three levels: sensing level, intermediate stage and terminal level. The frequency converter of the soil washing machine is the sensing stage, which adopts the advanced vector control technology, which can provide the real-time power, torque and frequency of the control motor. PLC is the intermediate stage, which communicates with the frequency converter through MODBUS communication protocol, and reads the real-time data of the frequency converter. Using the widely used configuration software as the terminal level, the data acquisition and monitoring system developed in the configuration software can easily monitor the experimental process, receive and store the data in PLC. According to the results of dynamic performance study, the SDLXJ soil leaching machine was optimized. The finite element analysis of the frame is carried out by using ANSYS software, and the stress concentration and weak links are found and strengthened. The research results of this paper have reference significance for the design of similar equipment. At the same time, it also fills up the blank of domestic experimental equipment for contaminated soil leaching.
【学位授予单位】：沈阳大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X53
本文编号：2486509
[Abstract]:In the design process of mechanical equipment, accurate determination of motor power and load torque is the premise to ensure the stable operation of the equipment. However, for the special equipment with stirring and centrifugal motion in this subject, because the object is irregular moving material, most of the load torque and power are determined by analogy method and empirical method. The results designed by this method will deviate greatly from the actual values. In order to solve the above problems, taking the soil washing machine as an example, combined with the data acquisition method based on configuration software, the dynamic performance (the relationship between power, torque and rotating speed) is studied in this paper. The dynamic performance curve of soil washing machine under working condition was obtained. In the research and experiment of dynamic performance of soil leaching machine, a data acquisition system based on configuration software is designed and established with SDLXJ soil leaching machine as the experimental platform. Under the condition of given load, Collect the actual power and torque of the equipment at different speeds. The data acquisition system based on configuration software is composed of three levels: sensing level, intermediate stage and terminal level. The frequency converter of the soil washing machine is the sensing stage, which adopts the advanced vector control technology, which can provide the real-time power, torque and frequency of the control motor. PLC is the intermediate stage, which communicates with the frequency converter through MODBUS communication protocol, and reads the real-time data of the frequency converter. Using the widely used configuration software as the terminal level, the data acquisition and monitoring system developed in the configuration software can easily monitor the experimental process, receive and store the data in PLC. According to the results of dynamic performance study, the SDLXJ soil leaching machine was optimized. The finite element analysis of the frame is carried out by using ANSYS software, and the stress concentration and weak links are found and strengthened. The research results of this paper have reference significance for the design of similar equipment. At the same time, it also fills up the blank of domestic experimental equipment for contaminated soil leaching.
【学位授予单位】：沈阳大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X53
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，本文编号：2486509
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