DYNAMIC ANALYSIS AND OPTIMIZATION OF IMPACT MECHANISM FOR IMPACTING AND BREAKING ROCK ROADEADER

LI XiaoHuo; QIAN YaSen; JIAO Li; LI Yan; SHI ShangWei; WENG ZhengYang

doi:10.16579/j.issn.1001.9669.2017.04.041

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DYNAMIC ANALYSIS AND OPTIMIZATION OF IMPACT MECHANISM FOR IMPACTING AND BREAKING ROCK ROADEADER

更新时间：2022-09-22

- DYNAMIC ANALYSIS AND OPTIMIZATION OF IMPACT MECHANISM FOR IMPACTING AND BREAKING ROCK ROADEADER
- Journal of Mechanical Strength Vol. 39, Issue 4, Pages: 976-980(2017)
- 作者机构：
  
  1. 辽宁工程技术大学机械工程学院
  2. 广东文理职业学院机电工程系
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.04.041
  CLC：
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LI XiaoHuo, QIAN YaSen, JIAO Li, et al. DYNAMIC ANALYSIS AND OPTIMIZATION OF IMPACT MECHANISM FOR IMPACTING AND BREAKING ROCK ROADEADER. [J]. 39(4):976-980(2017)
DOI：

LI XiaoHuo, QIAN YaSen, JIAO Li, et al. DYNAMIC ANALYSIS AND OPTIMIZATION OF IMPACT MECHANISM FOR IMPACTING AND BREAKING ROCK ROADEADER. [J]. 39(4):976-980(2017) DOI： 10.16579/j.issn.1001.9669.2017.04.041.

摘要

为了改善冲击破岩掘进机冲击机构在周期冲击载荷作用下破岩过程的动态特性,利用应力波合成理论和有限元分析方法,对该机冲击机构进行模态分析及谐响应分析,获得了前六阶固有频率及振型和位移-频率曲线,确定了该机构的主要变形部位和各阶主振方向和三个轴向上最薄弱共振点,采用多目标遗传算法对摇臂的结构尺寸优化,减小了机构工作状态下的最大位移响应,改善了机构的动态特性,为该型掘进机冲击机构动态特性的研究与完善提供了方法和依据。

Abstract

In order to improve the impact mechanism of the impacting and breaking rock roadheader dynamic characteristics under the cycle impact load,the first six natural frequency and mode shape as well as the displacement-frequency curves were obtained by using stress wave synthesis theory and finite element method in the paper,the modal and harmonic response of the mechanism were analyzed,the main deformation portion and main vibration direction and three axial weakest points of the mechanism were confirmed,structure size optimization of the rocker arm were adopted with multiple objective genetic algorithm,The maximum displacement response of the mechanism was reduced,and the dynamic characteristics of the mechanism were improved,which provides a method and basis for researching and improving the dynamic performance of the mechanism.

关键词

掘进机冲击机构模态谐响应优化设计

Keywords

RoadheaderImpacting mechanismModalHarmonic responseOptimization design

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