选煤厂空气重介机圆环链和驱动链轮非线性接触力学分析
Mechanical Analysis of Non-Linear Contact between Circular Chain and Driving Sprocket of Air Heavy Media Machine in Coal Processing Plant
曹渊1
作者信息
- 1. 晋能控股煤业集团有限公司,山西 大同 037001
- 折叠
摘要
为进一步探究选煤厂空气重介机在运行过程中圆环链与驱动链轮接触部分的磨损问题,以FQZ66型空气重介机为研究对象,基于该设备中的驱动链轮与圆环链接触部分进行建模与有限元分析,确定链窝平面上方靠近立环槽的边缘处存在较高应力是造成磨损的主要原因.对此,进一步通过响应面分析优化方法对该结构的主要参数进行优化,结果显示,优化后的驱动链轮在启动瞬间所受的最大应力为1 333.9 MPa,比优化前减少了 17.3％;驱动链轮在启动瞬间产生的最大应变为0.0073,比优化前减少了 17％,取得了一定的优化效果.
Abstract
In order to further investigate the wear problem of the contact part between the circular chain and the driving sprocket during the operation of the coal preparation plant air heavy intermediary machine,the FQZ66 air heavy intermediary machine is taken as the object of study,and based on the modelling and finite element analysis of the contact part between the driving sprocket and the circular chain of the machine,it is determined that the wear is caused by the high stress at the upper part of the chain nest plane,which is close to the edge of the groove of the vertical ring.In this regard,the main parameters of the structure were further optimized by response surface analysis optimization method,and the results showed that the maximum stress suffered by the optimized drive sprocket at the start-up instant was 1333.9 MPa,which was 17.3％less than that before the optimization;and the maximum strain produced by the drive sprocket at the start-up instant was 0.007 3,which was 17％less than that before the optimization,and certain optimization effect was achieved.
关键词
选煤厂/空气重介机/圆环链/驱动链轮/非线性接触/仿真分析Key words
coal beneficiation plant/air re-mediator/circular chain/driving sprocket/nonlinear contact/simulation analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据