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装载机事情装置载荷ope手机移动版识别模子与载荷测取要领

发布时间:2020-12-26 02:59来源:网络整理点击:

装载机事情装置载荷识别模子与载荷测取要领 被引量: Load Identification Model and Measurement Method of Loader Working Device

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摘要 为了研究装载机铲装功课时所受外载荷巨细及变革特性,按照铲斗铰点力与斗尖力干系成立事情装置外载荷识别模子。以国产LW900K装载机为试验样机,提出了三向力销轴传感器法和动臂截面弯矩法两种载荷制取要领,举办典范功课姿态下的载荷验证和铁矿粉物料下的载荷测试试验。功效表白:提出的三向力销轴传感器法和动臂截面弯矩法都可以或许精确获取外载荷识别所需要的铰点载荷,销轴传感器法功效精度高于动臂截面弯矩法;试验样机事情装置所受大载荷呈此刻物料铲掘和卸载时刻,测得卸料时的惯性攻击载荷峰值约为400kN;通过雨流计数获得外载荷协力的均值听从正态漫衍,幅值听从三参数威布尔漫衍。载荷测试和阐明功效可以或许有效办理装载机事情装置外载荷难以获取的问题,为载荷谱体例和疲惫特性阐明提供依据。 The characteristics of the load and the change of the external load of the loader working device are studied.First,the external load identification model is established according to the relationship between the bucket hinge point force and the bucket tip force.Then,the three direction force pin sensor method and the boom section moment method are proposed.The load verification and dynamic load test of iron ore material are carried out on the prototype of the LW900 Kloader.The results show that the hinge point force could be gained accurately by these two methods,and the accuracy of the boom section moment test results is lower than that of the pin shaft sensor.Under the test equipment of iron ore material,the load of the working device appears in the time of digging and unloading materials.For the first time,the inertial impact load of LW900 Kloader is obtained through the test,and the peak load is about 400 kN.The relationship between the mean,amplitude and frequency of the resultant force of the working device is obtained by the rain flow counting method.It is found that the distributions of load mean and amplitude obey normal distribution and Weibull distribution with three-parameter respectively.The load identification model could effectively solve the problem of the external load acquisition difficulty of loader working device,and the load time history data could be used as reference for the load spectrum and the analysis of the structural fatigue characteristics.

作者 万一品 宋绪丁 郁录平 员征文 WAN Yipin;SONG Xuding;YU Luping;YUAN Zhengxven(The Key Laboratory of Road Construction Technology and Equipment of MOE Chang'an University Xi'an 710061 China;Engineering Machinery Research Institute of Xuzhou Construction Machinery Group Xuzhou 221004 China)

机构地域 长安大学阶梯施工技能与装备教诲部重点尝试室 徐工团体江苏徐州工程机器研究院

出处 《振动.测试与诊断》 EI CSCD 北大焦点 2019年第3期582-589,673共9页 Journal of Vibration,Measurement & Diagnosis

基金 国度科技支撑打算扶助项目(2015BAF07B02) 中央高校根基科研业务专项资金扶助项目(300102259304).

要害词 装载机 事情装置 载荷识别模子 载荷测取 loader working device load identification model load measurement method

分类号 TH243.1 [机器工程—机器制造及自动化]

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振动.测试与诊断

2019年 第3期

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