1200吨全自动粉煤灰蒸压砖成型装备液压系统研究与设计

【作者】 姚佳烽；

【导师】 陆宝春；

【作者基本信息】 南京理工大学 ， 机械制造及其自动化， 2011， 硕士

【摘要】 我国人口众多,资源相对不足,而粉煤灰与煤矸石排放量仍在急剧增加,不仅占用大量土地,还造成了严重的环境污染。本课题通过产学研合作,面向粉煤灰和煤矸石等固体废弃物的资源化综合应用需求,研制智能化、集成化、网络化的1200吨粉煤灰蒸压砖成型装备自动化生产线。本文对该成型装备的液压系统进行了研究与设计。首先,针对液压系统设计需求,基于下缸双套筒结构和充液装置结构的特点,设计了双泵双回路的液压系统,并进行了主要元器件选型；其次,利用软件AMESim对所设计的液压系统进行建模与动态特性仿真,得出了压制部分速度、压力、位移等曲线,根据这些结果,对参数进行了优化和选择；而后,针对仿真结果发现的液压系统冲击及振动问题,对产生冲击的原因进行了理论分析,并对单向节流阀卸荷回路与溢流阀组卸荷回路进行了研究,提出了带有远程控制口的溢流阀释压方法；最后再次利用AMESim对改进后的液压系统进行了二次建模与仿真,通过对比分析,验证了改进方案的合理性。通过调试验证,本课题设计的1200吨粉煤灰蒸压砖成型装备液压系统达到了预期的功能要求,动作顺序正确,具有较好的可靠性和实用性,满足现场生产的需求。更多还原

【Abstract】 There are so many people but so little resources to use in our country. Meanwhile, the discharge amount of coal fly ash are increasing, which lead to heavy pollution and massive occupation of land. Through cooperation among industry, universities and research institutes, this project develops the production line of 1200 ton automation coal-ash-brick equipment with Intelligence, integration and network, which relates to the synthesis utilizing solid wastes like coal-ash and gangue.This thesis does research on the hydraulic system of 1200 ton automation coal-ash-brick equipment. Firstly, the dual pump and dual circuit hydraulic system is designed based on the hydraulic requirements and the structure of the double-cylindrical-shaped lower cylinder and charging valve. Next, a series of dynamic curves of the press part are obtained using AMESim software, and the parameters of the equipment are selected and optimized. Then, for the hydraulic problem of impact and vibration, the reasons are analyzed. Through analyzing the one-way throttle valve relieving loop and the relief manifolds loop, the reliving methods are discussed, and then the reliving loop with remote control port are designed, which is specially used for this equipment. Finally, with AMESim, the optimized press equipment is modeled and simulated again, and the proper result is demonstrated via comparing the old and new designing methods.Full-scale experiment results showed that the hydraulic system of 1200 ton automation coal-ash-brick equipment reached the expected requirements, has a better adaptability and reliability and satisfied the demand of practical producing.更多还原