起重运输机械
起重運輸機械
기중운수궤계
HOISTING AND CONVEYING MACHINERY
2015年
4期
82-86
,共5页
边双刮板链%中部槽%链道%动力学模型%柔性连接%刚度%链条断裂
邊雙颳闆鏈%中部槽%鏈道%動力學模型%柔性連接%剛度%鏈條斷裂
변쌍괄판련%중부조%련도%동역학모형%유성련접%강도%련조단렬
double-side scraper chain%middle trough%chain channel%dynamic model%flexible connection%rigidity chain breakage
针对边双刮板链工作时左右链条受力不均的问题，基于多刚体动力学理论，模拟了各链结间及链结与刮板间的柔性连接并进行了相关的刚度计算，讨论了冲击函数的参数选用原则，建立了包括中部槽、压链板在内的完整刮板链系统动力学模型，并对空载启动、松边单链卡死及紧边单链断开等工况进行了动力学仿真。结果表明，现有的中部槽链道满足通过性要求，单链卡死可造成链条断裂，单链断裂后的刮板链呈平行四边形状，会造成链道内的窝链现象。
針對邊雙颳闆鏈工作時左右鏈條受力不均的問題，基于多剛體動力學理論，模擬瞭各鏈結間及鏈結與颳闆間的柔性連接併進行瞭相關的剛度計算，討論瞭遲擊函數的參數選用原則，建立瞭包括中部槽、壓鏈闆在內的完整颳闆鏈繫統動力學模型，併對空載啟動、鬆邊單鏈卡死及緊邊單鏈斷開等工況進行瞭動力學倣真。結果錶明，現有的中部槽鏈道滿足通過性要求，單鏈卡死可造成鏈條斷裂，單鏈斷裂後的颳闆鏈呈平行四邊形狀，會造成鏈道內的窩鏈現象。
침대변쌍괄판련공작시좌우련조수력불균적문제，기우다강체동역학이론，모의료각련결간급련결여괄판간적유성련접병진행료상관적강도계산，토론료충격함수적삼수선용원칙，건립료포괄중부조、압련판재내적완정괄판련계통동역학모형，병대공재계동、송변단련잡사급긴변단련단개등공황진행료동역학방진。결과표명，현유적중부조련도만족통과성요구，단련잡사가조성련조단렬，단련단렬후적괄판련정평행사변형상，회조성련도내적와련현상。
In terms of uniform stresses borne by both left and right chains with the double-side scraper chain in opera-tion,the flexible connection between chain joints,between the chain joint and scraper are simulated based on rigid multi-body dynamic theory,with related rigidity calculation.The principle of parameter selection of impact functions is discussed as well.The complete dynamic model for the scraper system is developed including middle trough and scrapping belt for the purpose of dynamic simulation of no-load start-up,slack-side single chain blockage,and tight-side single chain breakage, etc.The result shows that the existing chain channel for middle slot is available to smoothly pass through.Single-chain get-ting stuck may cause chain breakage,and the broken scrapper indicates parallelogram shape,resulting in chain nesting in the chain channel.
