挖掘机工作装置毕业设计

科技学院

本科毕业设计（论文）题目挖掘机工作装置设计

挖掘机工作装置设计

摘要

单斗挖掘机是一种重要的工程机械，广泛应用于房屋建筑、筑路工程、水利建设、农林开发、港口建设、国防工事等的土石方施工和矿山采掘工业中，对减轻繁重的体力劳动、保证工程质量、加快建设速度、提高劳动生产率起着十分巨大的作用。随着国家经济建设的不断发展，单斗挖掘机的需求量将逐年大幅度增长，其在国民经济建

设中的作用将越来越显著。

反铲装置作为单斗挖掘机工作装置的一种主要形式，在工程实践中占有重要地位。反铲装置的各组成部分有各种不同的外形，要根据设计要求选用适合的结构并对其作运动分析。然后，在满足机构运动要求的基础上对各机构参数进行理论计算，确定各机构尺寸参数，确定挖掘机反铲装置的基本轮廓。

挖掘阻力和挖掘力是衡量挖掘机性能参数的重要性能指标，对其分析计算至关重要。挖掘阻力主要与挖掘对象及自身尺寸参数有关，而挖掘力则受众多条件限制，危险工况的分析是关键点。在挖掘力分析基础上，可对各杆件铰接点进行力的分析计算，

并进行机构设计的合理性分析。

关键词：单斗挖掘机运动分析力学分析强度校核

SINGLE DOU EXCAVATOR WORKING DEVICE DESIGN

ABSTRACT

Single d o u excavator is a kind of important engineering machinery, widely used in building, road engineering, water conservancy construction, forestry development, port construction, national defense construction and the conditions of fortifications mining extraction industries, to reduce heavy manual labor, ensuring the quality of projects and accelerate the construction speed and improve labor productivity plays an enormous role. With the continuous development of national economic construction, d o u excavator demand will greatly increase year by year, its role in national economic construction will become more and more prominent. The shovel device as a single d o u excavator working device of a main form in engineering practice, occupies an important position. The shovel device of each component of a variety of different shape, according to the design requirements for the selection of the structure and kinematic analysis. Then, on the basis of the requirement of motion parameters of various institutions, organizations, and determine the size parameters

of the shovel device determine excavator basic outline.

Digging resistance and mining force is the important measure excavator performance parameters on its performance index analysis, calculation is very important. Digging resistance with mining and relevant parameters, and their size by numerous dig power restriction, dangerous working conditions, the analysis is the key point. Based on the analysis in the mining strength to the bar on the pivotal point force calculation and analysis and the rationality of the design.

KEY WORDS: Single d o u excavator, Motion analysis, Mechanics analysis，Strength Check

目录

摘要................................................................. I ABSTRACT .............................................................. II 1绪论.. (1)

1.1课题背景及目的 (1)

1.2国外研究状况 (1)

1.3 课题研究方法 (2)

1.4 论文构成及研究容 (2)

2总体方案设计 (3)

2.1 工作装置构成 (3)

2.2 动臂及斗杆的结构形式 (5)

2.3 动臂油缸与铲斗油缸的布置 (5)

2. 4 铲斗与铲斗油缸的连接方式 (6)

2.5 铲斗的结构选择 (6)

2.6 原始几何参数的确定 (7)

3 工作装置运动学分析 (9)

3.1 动臂运动分析 (9)

3.2 斗杆的运动分析 (10)

3. 3 铲斗的运动分析 (11)

3.4 特殊工作位置计算： (15)

4基本尺寸的确定 (19)