卸卷小车液压系统设计优质课件.doc

卸卷小车液压系统设计 摘 要 卸卷小车是热带钢连轧机的重要配套设备，位于卷取机的侧面，用来将卷取的钢卷从卷筒上卸下，并运送到打捆台架上或步进梁式运输机的固定台架上。轧钢生产实践证明，卸卷小车的工作状态直接影响着热连轧机生产力的发挥。本文对卸卷小车的技术参数、工作流程、液压站、机械结构，电气控制等进行了全面的介绍。另外，通过对电液开关控制、电液比例控制、电液伺服控制等液压控制方案的对比，决定卸卷小车液压系统采用电液比例控制技术控制。这样，不仅使得卸卷小车的液压系统得以简化，而且避免了由于钢卷质量大，且质量不确定，出现钢卷从小车上跌落的安全隐患，也使得升降液压缸和行走液压缸的速度控制更加容易、平稳，工作效率更高。卸卷小车的液压系统采用了集成块的集成方式。对集成块和液压站的设计采用了Pro/E软件的三维建模方法，使得建模过程更加直观、准确、高效，更改更加容易。 关键词： Hydraulic System Design of Coil Stripper Car Abstract The coil stripper car is an important facility of the Hot Strip Mill. It is usually located at the coiler side. It is used to offload the steel coil and send them to the saddle or the walking-beam coil conveyer. The production practices of the rolled steel have shown that the working state of the coil stripper car directly influence the productivity of the hot strip mill. This article presents the coil stripper cars technical parameters, work flow, liquid pressure station, mechanical structure and electrical control. What‘s more, after the analyses of electro-hydraulic hydraulic control technologies of the on-off control, the proportional control and the servo control, the coil stripper cars hydraulic system is selected to be controlled by the electro-hydraulic proportional control technology. Thus, it not only simplifies the hydraulic system, but also avoids the safety of the coil falling off the car because of the coil’s big and spotty quality. In a addition, The cylinders velocity can be controlled more easily, more stably and more efficiently.The coil stripper cars hydraulic system is integrated by the manifold block. And its manifold block and hydraulic station is designed in three dimensional model by use of Pro/E software, which makes the design more clear, more accurate and more efficient, and makes the modification more easily. Key Words: Coil stripper car；Hydraulic System；Proportional Control；3 Dimensional Model 1绪论 1.1课题背景概述 在冶金工业的生产过程中要使用大量具有大型、重载、连续生产等特点的机械和设备，其工作环境多数是高温、多尘的恶劣条件。随着产量的增加，产品质量要求的提高，对冶金机械和设备控制精度和自动化