液壓挖掘機正鏟工作裝置設計

論文編號:JX1629  論文字數(shù):12389.頁數(shù):35 附任務書，開題報告，外文翻譯,CAD圖，及視頻

液壓挖掘機的的發(fā)展及設計
摘要：近年來，隨著鋼鐵業(yè)、煤炭業(yè)、電力業(yè)的持續(xù)迅猛發(fā)展，挖掘機等工程機械的需求日益增加，并廣泛地運用于房屋建筑、筑路工程、水利建設、農林開發(fā)、港口建設、國防工事的土石方施工和礦山采掘工業(yè)中。由于其作業(yè)工況復雜多變，挖掘方式往往是憑借操作者的經驗，根據(jù)實際作業(yè)工況決定，為了減小操作者的挖掘經驗對挖掘效果的影響，就迫切需要建立起鏟斗挖掘軌跡與各液壓缸的直接對應關系，實現(xiàn)挖掘機操作的自動化。同時由于挖掘機的工作環(huán)境的復雜性及工況的多變性，就要求液壓挖掘機本身結構要根據(jù)環(huán)境的不同作相應的調整，這就決定了挖掘機設計的平凡性、重復性。然而液壓挖掘機的工作裝置又是一個多自由度的多桿系統(tǒng)，各鉸點的確定非常復雜，這些因素就造成了液壓挖掘機的投資大、設計周期長，嚴重地影響了廠商的經濟效益及國民經濟的發(fā)展。
 本文主要的設計工作主要有以下幾個方面：在現(xiàn)場測繪及參考有關資料的基礎上了解液壓挖掘機的工作方式及工作環(huán)境。確定液壓挖掘機各個工作裝置的結構，查找相關資料并結合經驗公式對挖掘機工作裝置的總體進行設計，用比例法和經驗公式計算出工作裝置各部分的基本尺寸并對其進行應力分析，然后繪制出其二維CAD圖紙，繼而用PRO/E畫出各裝置的三維模型。將各裝置裝配后對其進行運動模擬仿真。

關鍵詞：挖掘機；工作裝置；CAD;PRO/E;運動仿真

The development and design of hydraulic excavator
Abstract：In recent years, as steel, coal industry and quarrying continued rapid development, excavators engineering machinery requirement increasingly, and is widely used in housing construction, road engineering, water conservancy construction, forestry development, port construction, national defense construction and conditions of fortifications mining extraction industryDue to the complex and changeable, mining operation condition is often with operator way according to the actual working experience, decision, in order to reduce homework to excavate the mining experience operator, the effects will is in urgent need to build up the bucket with various hydraulic cylinder dig trajectory direct corresponding relation, realize the automation. Excavator operationAt the same time because of the  complexity of an excavator working environment and conditions, requires the fluidity of hydraulic excavator itself according to the different structural environment makes the corresponding adjustment, this determines the excavator design of ordinary sex, repeatability. However hydraulic excavator working device is a much more freedom, the hinge point bar system to determine the very complex, these factors will cause the hydraulic excavator big investment, design cycle is long, the serious influence on the economic benefits of the manufacturers and national economic development.
 This paper mainly design work mainly in the following aspects: in the field surveying and mapping and reference on the basis of relevant information about the hydraulic excavator way of working and working environment Determine the hydraulic excavator, each working device search relevant material and structure of practical experience formula of the overall work device for excavators designed, use proportion method and experience calculation work device each part of basic size and carries on the stress analysis, and then plot its two-dimensional CAD drawings, and then painted with PRO/E 3d model of each device. After each device assembly of its motion simulation

Keywords: Hydraulic Excavator; Working device; Boom;Stick;Face-shovel

目錄
 1 前言 1
 1.1課題研究的背景和意義 1
 1.2 液壓挖掘機研究現(xiàn)狀及發(fā)展動態(tài) 1
 1.2.1 國外的研究現(xiàn)狀及發(fā)展動態(tài) 2
 1.2.2 國內的研究現(xiàn)狀及發(fā)展動態(tài) 3
 1.3 本文研究的主要內容 4
 2液壓正鏟挖掘機工作裝置的運動分析 5
 2.1 液壓正鏟挖掘機的基本組成和工作原理 5
 2.2 工作裝置結構方案的確定 6
 2.3 工作裝置運動分析 9
 2.3.1動臂運動分析 9
 2.3.2斗桿運動分析 11
 2.3.3斗齒尖的幾種特殊工作位置的計算 12
 3 工作裝置尺寸的設計確定 15
 3.1應用舉例 15
   3.1.2動臂及斗桿長度確定 …………………………………………………16
 3.1.2機構轉角范圍確定 17
 3.2 油缸鉸點及行程確定 17
 3.2.1動臂油缸的鉸點及行程確定 17
 3.2.2 斗桿油缸鉸點及行程確定 17
 3.2.3 鏟斗油缸鉸點及行程確定 18
 3.3工作裝置的位置模型建立 18
 3.3.1 動臂與平臺鉸點位置C的確定 18
 3.3.2 動臂及斗桿長度的確定 19
 3.3.3 機構轉角范圍確定 19
 3.4工作裝置油缸鉸點及行程確定 24
 3.4.1動臂油缸的鉸點及行程確定 24
 3.4.2斗桿油缸鉸點及行程確定 27
 3.4.3鏟斗油缸鉸點及行程確定 30
 3.5液壓正鏟挖掘機三維模型 32
 4 結論 33
 參考文獻 34
 致謝 35