工程机械高压柱塞泵测试系统的设计与研究

发布时间：2018-06-26 07:57

本文选题：高压柱塞泵 + 液压CAT技术　；参考：《烟台大学》2017年硕士论文

【摘要】：随着“一带一路”战略的布局,我国高端装备制造业得到进一步推动。液压技术也随之转型升级,开始向高压重载的方向发展。液压测试技术在液压元件及液压系统研制和生产的过程中起着关键作用,是验证产品性能指标、可靠性、寿命等的重要手段。为生产出满足高压重载工程要求的液压泵,需要得到基于液压测试的理论指导,从而对高压泵的结构和生产工艺做进一步的优化。本文针对工程机械中常见的30-40Mpa高压柱塞泵的出厂测试,研制了一款基于工控机与PLC联合控制的液压泵手/自一体测试系统。该测试系统基于液压CAT(Computer Aided Test)技术,采用具有强大图形界面及众多组件功能的Delphi作为集成开发环境,应用数据采集卡进行模拟信号的输入输出,通过传感器将测试数据输入到工控机中分析并进行交互式处理来构建闭环控制系统,对电机转速与加载压力进行可靠控制。运用PLC、开关量控制卡、电压比较器、手动开关来实现测试状态的手/自一体控制,使高压柱塞泵测试系统同时拥有工控机良好的人机交互界面和PLC高可靠性的逻辑判断能力。最终实现了测试系统采样数据的显示与计算、测试参数的选择与控制、工作状态的监控与管理等功能。现场使用表明,测试系统操作方便、稳定性好,其控制精度达到了机械行业标准JB/T 7043-2006规定的B级精度,实现了高压柱塞泵不同系列产品的压力-流量特性、压力-输入扭矩特性、容积效率和总效率等多种性能的自动测试并能够准确绘制产品的性能曲线、生成测试报表以及存储测试数据。该系统满足高压柱塞泵研发和生产的要求,为我国发展新型高压柱塞泵提供可靠的测试平台。
[Abstract]:With the layout of Belt and Road strategy, China's high-end equipment manufacturing industry has been further promoted. Hydraulic technology has also been transformed and upgraded to the direction of high-pressure heavy-duty development. Hydraulic testing technology plays a key role in the development and production of hydraulic components and systems. It is an important means to verify the performance index, reliability and life of products. In order to produce a hydraulic pump which meets the requirements of high-pressure and heavy-duty engineering, it is necessary to obtain the theoretical guidance based on hydraulic testing, so as to further optimize the structure and production process of the high-pressure pump. Aiming at the testing of 30-40Mpa high pressure piston pump in construction machinery, a hydraulic pump hand / self integrated testing system based on industrial control computer and PLC is developed in this paper. The test system is based on hydraulic cat (computer Aided Test) technology. It uses Delphi, which has powerful graphical interface and many component functions, as the integrated development environment, and uses the data acquisition card to carry out the input and output of analog signal. The closed loop control system is constructed by input the test data into the industrial control computer through the sensor, and the motor speed and loading pressure are controlled reliably. PLC, switch control card, voltage comparator and manual switch are used to realize the hand / self control of the test state. The high pressure piston pump testing system has good man-machine interface and high reliability logic judgment ability of PLC. Finally, the functions of display and calculation of sampling data, selection and control of test parameters, monitoring and management of working state and so on are realized. The field application shows that the test system is easy to operate and has good stability. Its control precision has reached the B-class precision stipulated by the mechanical industry standard JB / T7043-2006, and the pressure-flow characteristics of different series of high pressure piston pumps have been realized. Automatic testing of pressure-input torque characteristics, volumetric efficiency and total efficiency, and the ability to accurately plot product performance curves, generate test reports and store test data. The system meets the requirements of research and production of high pressure piston pump and provides a reliable test platform for the development of new high pressure piston pump in China.
【学位授予单位】：烟台大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU60

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