【摘要】：為了使小型掃雪器最主要執(zhí)行部件螺旋葉片的結(jié)構(gòu)更加合理,在原有葉片設計僅憑經(jīng)驗數(shù)據(jù)基礎(chǔ)上定性定量地確定出可以優(yōu)化螺旋葉片性能的結(jié)構(gòu)參數(shù)值。對螺旋集雪器集雪過程中,葉片表面上的雪顆粒進行運動分析,建立雪顆粒運動的數(shù)學模型,得到葉片主要結(jié)構(gòu)參數(shù)與集雪器除雪效率的直接關(guān)系。運用有限元理論和基于軟件ANSY/Workbench,建立不同結(jié)構(gòu)參數(shù)值條件下的葉片有限元模型并進行仿真分析。通過靜態(tài)特性分析,確定螺旋葉片螺距和厚度的最優(yōu)值,確保葉片足夠的強度剛度,彌補了螺旋葉片的設計不足。通過預應力模態(tài)分析,得到葉片轉(zhuǎn)速的合理區(qū)間,為以后使用中避免共振提供了重要的理論依據(jù)。
[Abstract]:In order to make the structure of the spiral blade, the main executive part of the small snow sweeper, more reasonable, the structural parameters which can optimize the performance of the spiral blade can be determined qualitatively and quantitatively on the basis of the original blade design only on the basis of empirical data. The movement of snow particles on the blade surface of the spiral snow collector is analyzed and the mathematical model of the snow particle movement is established. The direct relationship between the main structural parameters of the blade and the snow removal efficiency of the snow collector is obtained. Based on the finite element theory and software ANSY/Workbench, the blade finite element model with different structural parameters was established and simulated. Through static characteristic analysis, the optimum value of screw pitch and thickness of spiral blade is determined to ensure sufficient strength and rigidity of blade, which makes up for the insufficient design of spiral blade. Through the modal analysis of prestressing force, the reasonable range of blade speed is obtained, which provides an important theoretical basis for avoiding resonance in later use.
【作者單位】： 華北理工大學機械工程學院;
【基金】：唐山市重點汽車實驗建設(12130201A-2)
【分類號】：TH122
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本文編號：2209357