全液压推土机铲刀抖动功能研究  

Research of Blade Shake on Full Hydraulic Bulldozers

作　　者：余丽艳[1] 林嘉栋[1] 赵建军[1] 金轲[1] 李超[1] 

机构地区：[1]山推工程机械股份有限公司研究总院

出　　处：《工程机械》2013年第2期17-19,29,共4页Construction Machinery and Equipment

摘　　要：随着静液压传动技术与电液比例控制技术的紧密结合,全液压推土机的自动化程度大幅提高,操作简单,节能高效。全液压推土机的工作装置一般为万向铲结构,在液压缸的驱动下铲刀可升降、倾斜及在垂直平面内摆动。对如何实现铲刀抖动功能进行研究,对铲刀抖动功能的原理、抖动频率等进行分析。首先在可编程控制器上设定抖动电流,通过触发抖动按钮向电液比例换向阀的两先导侧交替输出先导压力,使主阀阀芯频繁换向,倾斜液压缸做快速往复运动,铲刀在液压缸的驱动下也瞬间抖动,进而抖落铲刀上的附着物。铲刀的抖动功能不仅能降低操作者的劳动强度,还可以提高作业效率。A study on dozer blade shake.Along with close combination of hydrostatics with hydro-electric proportional control automation of full hydraulic bulldozers has got a big upgrade for its easy operation,power saving,and high efficiency.Attachment of the full-hydraulic bulldozer adopts as a rule a universal-joint construction that the blade under the cylinders actuation can be lifted,angled,and tilted in a vertical plane.We carried out a study on how to realize a jerking function in the dozer blade by analyzing the blade's jerking principles,and the jerking frequency.Firstly,we set the jerking current in a programmable controller to trigger a jerking button to deliver alternative pilot pressure to either pilot side of the hydro-electric proportional reversible valve to cause the master valve's element to shift frequently so that the tilt cylinder rod can move back and forth rapidly so does the blade in jerking as actuated by the cylinder,thus shaking off dirt to the blade.The blade jerking can not only decrease fatigue of the operator but also increase working efficiency.

关 键 词：全液压推土机 万向铲 铲刀抖动 抖动频率 

分 类 号：TU623.5[建筑科学—建筑技术科学]