矿用刮板输送机链轮更换修复评价方法
Mining scraper conveyor sprocket replacement and repair evaluation method
刘会峰 1高中 1赵丽佳1
作者信息
- 1. 神东煤炭集团公司 设备维修中心,鄂尔多斯 017010
- 折叠
摘要
[目的]刮板输送机链轮的过度磨损、超寿命工作情况会导致卡链、断链等故障,对输送设备的正常运行造成不利影响.为了指导用户及时更换不宜继续使用的链轮,降低设备故障的发生率,提出一种矿用刮板输送机链轮更换修复评价方法.[方法]基于Archard磨损理论,对链轮的淬火硬度层的硬度特性进行研究,对圆环链传动系统在链轮不同磨损程度下的啮合传动过程进行动力学仿真分析,并对刮板输送机的动态特性进行试验,以验证仿真分析的准确性.[结果]结果表明,链轮链窝磨损深度达到最大淬火硬度层深度时,链轮的性能显著下降,应该考虑更换链轮;圆环链传动系统出现速度波动、接触力和拉力异常增加的情况时,也应及时更换链轮,以确保设备的稳定运行.所提方法为刮板输送机链轮的维护和更换提供了依据.
Abstract
[Objective]The excessive wear of the scraper conveyor sprocket and the over-life working condition will lead to the occurrence of the stuck chain,broken chain and other faults,which will adversely affect the normal operation of the convey-or equipment.In order to guide users to replace the sprocket that is not suitable for further use and reduce the incidence of equip-ment failure,a mining scraper conveyor sprocket replacement and repair evaluation method was proposed.[Methods]Based on the Archard wear theory,firstly,the hardness characteristics of the quench hardness layer of the sprocket were studied,and then the dynamic simulation analysis on the meshing transmission process of the ring chain drive system under different wear degree of the sprocket was carried out.The dynamic characteristics of the scraper conveyor were tested to verify the accuracy of the simulation analysis.[Results]The test results show that when the wear depth of the sprocket chain socket reaches the maximum quenching hardness layer depth,the performance of the sprocket has decreased significantly,and the sprocket should be re-placed.When the speed fluctuation,the contact force and the tension increase abnormally in the ring chain drive system,the sprocket should also be replaced in time to ensure the stable operation of the equipment.The proposed method provides a basis for the maintenance and replacement of the scraper conveyor sprocket.
关键词
刮板输送机/链轮磨损/Archard磨损理论/硬度特性分析/动力学仿真/修复评价标准Key words
Scraper conveyer/Sprocket wear/Archard wear theory/Hardness characteristic analysis/Dynamic simulation/Repair evaluation criteria引用本文复制引用
出版年
2025
NETL
NSTL
万方数据