架桥机前支腿液压系统优化设计  

Optimization Design of Front Leg Hydraulic System for Bridge Erecting Machine

作　　者：何磊 袁宏超 HE Lei;YUAN Hong-chao(China Railway Engineering Machinery Research&Design Institute Co.,LTD.,Wuhan 430000,China)

机构地区：[1]中铁工程机械研究设计院有限公司,湖北武汉430000

出　　处：《液压气动与密封》2020年第8期66-67,73,共3页Hydraulics Pneumatics & Seals

摘　　要：介绍了某架桥机的前支腿液压系统。在工作中当油缸动作停止时,泵站高压管和回油管存在剧烈振动和异常噪声。折叠油缸在伸到头时,系统压力大,存在失稳现象。通过改变建压电磁换向阀的过渡机能,有效消除了振动和异常噪声。增大活塞杆的强度、增设二次溢流阀限制系统压力,大幅提高了油缸稳定性。introduce the hydraulic system of front leg of bridge erection machine.When the cylinder stops in operation,there is big vibration and abnormal noise in the pump station high pressure pipe and oil return pipe.When the folding cylinder extends to the end,the system pressure is high and there is instability.By changing the transition function of solenoid directional valve,the vibration and abnormal noise are effectively eliminated.Increase the strength of piston rod,add secondary relief valve to limit the system pressure,which greatly improves the stability of cylinder.

关 键 词：架桥机 电磁换向阀 过渡机能 油缸稳定性 

分 类 号：TH137[机械工程—机械制造及自动化]