轮式起重机起升卷扬闭式液压系统控制研究
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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.
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.
引文
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[8]胡小冬,刘邦才,焦国旺.基于平衡阀先导阻尼网络的封闭容腔特性研究[J].液压与气动,2016(5):116-118.HU X D,LIU B C,JIAO G W.Study on the Characteristics of Closed Chamber Based on the Pilot Damping Network of Balance Valve[J].Chinese Hydraulics&Pneumatics,2016(5):116-118.
[2]管小兴.QLY1560型轮胎起重机液压系统设计[J].液压气动与密封,2014,34(11):21-24.GUAN X X.QLY1560 Wheeled Crane Hydraulic System Design[J].Hydraulics Pneumatics&Seals,2014,34(11):21-24.
[3]管小兴.用于吊装风电机组起升卷扬闭式液压系统设计[J].液压气动与密封,2014,34(12):9-13.GUAN X X.Closed Circuit Hydraulic System Design of Winch for Hoisting Wind Turbines[J].Hydraulics Pneumatics&Seals,2014,34(12):9-13.
[4]王晓艳.履带起重机起升机构闭式液压控制系统研究[D].大连:大连理工大学,2011.
[5]刘琴.带负功率控制的闭式卷扬液压系统及其节能性[J].建设机械技术与管理,2014(8):90-92.LIU Q.The Closed Type Hoisting Hydraulic System with the Negative Power Control and Its Energy Saving[J].Construction Machinery Technology&Management,2014(8):90-92.
[6]刘邦才.超越负载工况下轮式起重机起升系统特性研究[D].长春:吉林大学,2011.
[7]彭继文,朱安宁,刘士杰,等.起重机开式卷扬液压系统溜钩问题分析[J].液压与气动,2014(11):108-111.PENG J W,ZHU A N,LIU S J,et al.Analysis of Hoisting Sliding for Open Hydraulic Syetem of Crane[J].Chinese Hydraulics&Pneumatics,2014(11):108-111.
[8]胡小冬,刘邦才,焦国旺.基于平衡阀先导阻尼网络的封闭容腔特性研究[J].液压与气动,2016(5):116-118.HU X D,LIU B C,JIAO G W.Study on the Characteristics of Closed Chamber Based on the Pilot Damping Network of Balance Valve[J].Chinese Hydraulics&Pneumatics,2016(5):116-118.