基于液压激振的桩锤直线冲击振动耦合沉桩设备的研究
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摘要
针对马达偏心块液压振动锤存在能量利用率低、多锤同步代价高等问题,提出一种新型的桩锤直线冲击振动耦合沉桩设备,搭建试验平台,并对设备的可行性进行前期的研究。利用LMS Test.Lab中振动测试系统进行了一定参数下的振动实验。分析了测量的时域曲线,验证了这种设备在振动的过程中确实伴随着冲击现象,为后续研究最佳系统参数、最佳冲击点位置等提供了依据。
Aimed at the problems of energy efficiency of the hydraulic vibration hammer with motor eccentric block is low and multi-hammer synchronization cost high, a new type of pile hammer linear vibration-imapct coupled sinking equipment is presented. Test platform was set up, and preliminary research on the feasibility of the equipment was carried out. The vibration test under certain parameters was carried out by using the vibration Test system in Least Mean Square(LMS) Test. Lab. The time domain curve of measurement was analyzed. It is verified that this device is really accompanied by shock phenomenon during vibration, which provides the basis for the research of optimal system parameters and the location of optimal impact points.
Aimed at the problems of energy efficiency of the hydraulic vibration hammer with motor eccentric block is low and multi-hammer synchronization cost high, a new type of pile hammer linear vibration-imapct coupled sinking equipment is presented. Test platform was set up, and preliminary research on the feasibility of the equipment was carried out. The vibration test under certain parameters was carried out by using the vibration Test system in Least Mean Square(LMS) Test. Lab. The time domain curve of measurement was analyzed. It is verified that this device is really accompanied by shock phenomenon during vibration, which provides the basis for the research of optimal system parameters and the location of optimal impact points.
引文
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[3]韩冬,龚国芳,刘毅,等.基于不同阀芯结构的新型电液激振器[J].浙江大学学报(工学版),2014,48(5):757-763.HAN D,GONG G F,LIU Y,et al.New Electro-Hydraulic Exciter Based on Different Spools[J].Journal of Zhejiang University(Enginerring Science),2014,48(5):757-763.
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[6]刘浩,王浩宇,黄山田,等.液压打桩锤系统分析与工程应用[J].海洋工程装备与技术,2017,4(4):245-248.LIU H,WANG H Y,HUANG S T,et al.Analysis and Engineering Application of Hydraulic Pile Hammer System[J].Ocean Engineering Equipment and Technology,2017,4(4):245-248.
[7]寇子明,魏秀业,廉红珍.液压波动激振机理及其在模拟振动筛中的应用[J].煤炭学报,2012,37(3):511-515.KOU Z M,WEI X Y,LIAN H Z.Mechanism Excited by Hydraulic Fluctuation and Its Application on Simulation Vibration Screen[J].Journal of China Coal Society,2012,37(3):511-515.
[8]李伟荣,阮健,任燕,等.2D阀控单出杆激振缸低频特性研究[J].中国机械工程,2014,25(1):97-102.LI W R,RUAN J,REN Y,et al.Research on Low-frequency Characteristics of One-pole Vibration Cylinder Controlled by 2D Valve[J].China Mechanical Engineering,2014,25(1):97-102.