液压挖掘机阻力特性研究

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液压挖掘机阻力特性研究

任志贵¹,陈进²,王树春¹,庞晓平¹

1. 重庆大学机械传动国家重点实验室
2. 重庆大学

收稿日期:2013-11-01 修回日期:2014-02-09 出版日期:2015-04-15 发布日期:2014-11-07
通讯作者: 任志贵
基金资助:
江苏省科技成果转化专项资金项目

Researching on the resistance characteristic of the hydraulic excavator

Received:2013-11-01 Revised:2014-02-09 Online:2015-04-15 Published:2014-11-07

摘要/Abstract

摘要： 基于三种常用挖掘方式，研究单次挖掘过程中挖掘阻力随时间和挖掘轨迹的变化规律。利用多次实验结果分析阻力系数和阻力矩系数在挖掘过程不同阶段的分布情况。利用统计学原理分析当挖掘阻力在大于和小于平均挖掘阻力两种情况下阻力系数和阻力矩系数的分布特征。基于方向角变化规律研究各构件运动对挖掘阻力的影响，并计算得到阻力角和铲斗逆角在挖掘阻力不同取值范围内的分布特性。本研究从不同角度研究阻力特性并得到了阻力系数、阻力矩系数、阻力角、差值角的主值区间和概率密度，为理论挖掘力的计算、工作装置的设计和优化奠定了基础。

关键词: 液压挖掘机, 挖掘阻力, 阻力角, 主值区间, 概率密度, 统计学, Hydraulic excavator, Digging resistance, Resistance angle, Main value range, probability density, Statistics

Abstract: Based on three kinds of digging patterns which been used commonly, the variation regularities of digging resistance with time and digging trajectory in a single digging process were studied. The characteristics of the value of the resistance coefficient and the resistance moment coefficient in different stages of the digging process were obtained using the multiple experimental results. The distribution characteristic of the resistance coefficient and the resistance moment coefficient in both cases that are the resistance is greater than and less than the average resistance were examined in statistics. Based on the variation regularities of direction angles, the impact on resistance by the motion of each component was researched. And then, the distribution characteristics of the resistance angle and the bucket reverse angle in different value range of digging resistance were calculated. This paper studied the resistance characteristic from different perspectives, and obtained the main value range and the probability density of the resistance coefficient, the resistance moment coefficient, the resistance angle and the difference angle. This study laid a foundation for the calculation of theoretical digging force and the design and optimization of excavator working device.

任志贵陈进王树春庞晓平. 液压挖掘机阻力特性研究[J]. , 0, (): 0-0.

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液压挖掘机阻力特性研究

Researching on the resistance characteristic of the hydraulic excavator

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