礦用液壓扒裝機履帶行走機構平穩(wěn)性研究
發(fā)布時間:2018-03-26 22:39
本文選題:礦用液壓扒裝機 切入點:履帶行走 出處:《安徽理工大學》2015年碩士論文
【摘要】:履帶行走機構就其本身的結構特點來講,它具有其它行走機構無法比擬的優(yōu)點,具體是:接觸地面比壓小、對地附著性能好、爬坡能力強及彎轉能力穩(wěn)定等優(yōu)點。然而由于礦用液壓扒裝機需工作在井下特殊環(huán)境,必須長期行駛在路面工況復雜及井下空間限制的條件下。一般履帶行走機構是無法滿足使用工況要求的。研究在煤礦井下地質條件下履帶行走機構的穩(wěn)定性已成為業(yè)界的關注焦點和難題。 針對礦用液壓扒裝機的工況條件及行走機構的特點,利用虛擬樣機動力學仿真方法,探索礦用液壓扒裝機高效性能行走機構的設計方法,找出影響其穩(wěn)定性的相關及主要因素,本課題所做的具體工作如下: 1.基于礦用液壓扒裝機履帶行走機構的工況及結構特點,運用經典理論力學,運動學和動力學的相關理論,利用虛擬樣機仿真的功能軟件,建立了行走機構穩(wěn)定性的數學模型。 2.依據所建立的穩(wěn)定性數學模型,采用單因素分析方法,探索出其影響的相關因素及主要因素,其中有關因素有:驅動輪的齒數、履帶板的寬度、行走機構的位置分布;主要因素是:驅動輪與履帶板的嚙合關系及扒裝機的運動方向。 3.針對礦用液壓扒裝機履帶行走機構平穩(wěn)性影響因素分析及結合仿真與計算軟件對其實際工況進行仿真驗證,其結果表明:所建模型合理可行,影響因素分析正確科學,本課題所建立的理論和方法對改善礦用液壓扒裝機履帶行走機構的平穩(wěn)性具有較高的參考價值和實際應用效益。
[Abstract]:In terms of its own structural characteristics, the crawler mechanism has the advantages that other walking mechanisms cannot compare, in particular, the specific pressure of contact with the ground is small, and the adhesion to the ground is good, It has the advantages of strong climbing ability and stable bending ability. However, due to the special underground environment, the hydraulic pick-up machine for mining needs to work. It is necessary to drive for a long time under the condition of complex road condition and space restriction in underground. The general crawler walking mechanism can not meet the requirements of operating conditions. The study of the stability of crawler walking mechanism under the underground geological conditions of coal mine has become. For the industry's focus of attention and difficult problems. According to the working conditions and the characteristics of the walking mechanism, the design method of the high efficient performance walking mechanism of the hydraulic bagging machine is explored by using the dynamic simulation method of virtual prototyping. To find out the relevant and main factors that affect its stability, the specific work of this topic is as follows:. 1. Based on the working conditions and structural characteristics of the crawler mechanism of the mining hydraulic scraper, the mathematical model of the stability of the walking mechanism is established by using the relevant theories of classical theory mechanics, kinematics and dynamics, and using the functional software of virtual prototype simulation. 2.According to the established mathematical model of stability, single factor analysis method is used to explore the related factors and main factors, including the number of teeth of the driving wheel, the width of the track board, and the location distribution of the walking mechanism, among which the number of teeth of the driving wheel, the width of the track board and the position distribution of the walking mechanism are explored. The main factors are: the meshing relationship between the drive wheel and the crawler and the movement direction of the scraper. 3. Based on the analysis of the factors affecting the smoothness of the crawler walking mechanism of mine hydraulic scraper and the simulation and verification of its actual working condition combined with simulation and calculation software, the results show that the established model is reasonable and feasible, and the analysis of the influencing factors is correct and scientific. The theory and method established in this paper have high reference value and practical application benefit for improving the smoothness of the crawler walking mechanism of mining hydraulic pick-up machine.
【學位授予單位】:安徽理工大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:TD421
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