摘要
论述轮式起重机起升卷扬开式液压系统控制要点和闭式液压系统常规控制原理,提出一种新型控制技术用于控制轮式起重机起升卷扬闭式液压系统。原理为在起升卷扬闭式液压系统中设置一平衡阀,利用平衡阀特性来解决起升卷扬闭式液压系统启停溜钩、冲击震动等难题;利用平衡阀负载安全特性避免液压系统驱动管路一旦爆裂或发动机一旦出现飞车故障负载失速坠落现象发生;通过平衡阀先导内外联控,解决平衡阀在闭式液压系统中发热问题。实践证明,所设计的QLY系列轮式起重机起升卷扬闭式液压系统控制技术性能稳定可靠。
The main control points of wheel crane hoisting winding open hydraulic system and conventional closed hydraulic system control theory were discussed,and a new type of control technology was put forward for controlling wheel crane hoisting winding closed hydraulic system.The principle was that a balance valve was set in hydraulic system to solve start-stop sneak problems such as hook,impact vibration and etc,by using the balancing valve features.The balancing valve load safety features were used to avoid hydraulic system driving lines in case of burst or engine failure in the event of stall load fall.By balancing valve pilot inside and outside spreading,the problem of balancing valve fever in the closed hydraulic system was solved.Use proves that the designed QLY series wheel crane hoisting winch closed hydraulic system control technology is stable and reliable in performance.
作者
管小兴
高宏伟
白林迎
谢贺超
GUAN Xiaoxing;GAO Hongwei;BAI Linying;XIE Hechao(Zhengzhou New Dafang Heavy Industry Technology Co.,Ltd.,Zhengzhou Henan 450064,China)
出处
《机床与液压》
北大核心
2018年第16期65-68,共4页
Machine Tool & Hydraulics
关键词
轮式起重机
起升卷扬
开式液压系统
闭式液压系统
新型控制技术
平衡阀
Wheel crane
Hoisting winch
Open hydraulic system
Closed hydraulic system
Advanced control techniques
Balance valve
