Influence Analysis of Sprocket Tooth Thickness Effect on Natural Frequency of Mining Scraper Conveyor Chain Drive System

Wang Cunfei

doi:10.16578/j.issn.1004.2539.2022.11.018

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Influence Analysis of Sprocket Tooth Thickness Effect on Natural Frequency of Mining Scraper Conveyor Chain Drive System

Test·Analysis | 更新时间：2022-12-01

- Influence Analysis of Sprocket Tooth Thickness Effect on Natural Frequency of Mining Scraper Conveyor Chain Drive System
- Journal of Mechanical Transmission Vol. 46, Issue 11, Pages: 115-121(2022)
- 作者机构：
  
  1.国家能源集团神东煤炭集团公司，陕西榆林 719315
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2022.11.018
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王存飞.链轮齿厚对矿用刮板输送机链传动系统的固有频率影响分析[J].机械传动,2022,46(11):115-121.

Wang Cunfei.Influence Analysis of Sprocket Tooth Thickness Effect on Natural Frequency of Mining Scraper Conveyor Chain Drive System[J].Journal of Mechanical Transmission,2022,46(11):115-121.
王存飞.链轮齿厚对矿用刮板输送机链传动系统的固有频率影响分析[J].机械传动,2022,46(11):115-121. DOI： 10.16578/j.issn.1004.2539.2022.11.018.

Wang Cunfei.Influence Analysis of Sprocket Tooth Thickness Effect on Natural Frequency of Mining Scraper Conveyor Chain Drive System[J].Journal of Mechanical Transmission,2022,46(11):115-121. DOI： 10.16578/j.issn.1004.2539.2022.11.018.

摘要

为了改善矿用刮板输送机作业过程中链轮因振动而产生的磨损问题，运用Ansys有限元软件对不同齿厚的链轮分别进行模态分析，获得了链轮固有频率与齿厚的关系曲线和最大变形与齿厚的关系曲线。研究结果表明，对于48 mm×152 mm的中双链链轮，综合分析链轮的使用工况和配套的刮板尺寸，选用齿厚87 mm的设计参数，使得链轮有较高的固有频率，同时对应最大变形也较小，可保证圆环链和链轮的传动性能。对分析结果中的特殊点进行分析，找出了链轮振型应避免的特殊情况。当无法改变链轮外部的激励时，应避免使用齿厚97 mm的参数，防止轮齿部位的变形过大。分析结果为矿用刮板输送机链传动系统的设计优化与生产制造提供了理论依据。

Abstract

In order to improve the wear problem of sprockets caused by vibration in the process of mining scraper conveyor operation, the Ansys finite element software is used to analyze the sprocket with different tooth thicknesses respectively. Through the comprehensive analysis of the results, the relationship curve between the sprocket natural frequency and tooth thickness, and the relationship curve between the maximum deformation and tooth thickness are obtained. The results show that for 48 mm×152 mm medium double chain sprockets, the service condition of the sprocket and the size of the supporting scraper should be comprehensively analyzed, and the design parameter with the tooth thickness of 87 mm should be selected, so that the sprocket could have higher natural frequency and smaller corresponding maximum deformation, which can ensure the transmission performance of the ring chain and sprockets. The special points in the analysis results are analyzed to identify special cases that should be avoided for the sprocket mode. When the excitation outside the sprocket cannot be changed, the tooth thickness parameter of 97 mm shall be avoided to prevent excessive deformation of the tooth. The analysis results provide a theoretical basis for the design optimization and manufacturing of the chain drive system of the scraper conveyor used in mining.

关键词

矿用刮板输送机链轮模态分析固有频率

Keywords

Mining scraper conveyorSprocketModal analysisNatural frequency

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