ZL50装载机动力匹配系统设计+CAD图纸+答辩PPT
时间:2017-05-11 20:09 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：装载机是一种作业效率高、机动灵活、用途广泛的工程机械，作业工况复杂多变，负荷变化频繁、变化范围大。如何最简单而又适宜地使发动机和传动系统同外部负荷之间始终保持最合理的匹配，一直是装载机传动系统长期以来存在的问题。本论文以 ZL50 装载机为对象，解决其动力装置功率输出特性和工作、行走装置动力需求之间的各种矛盾，实现与发动机协同工作，以保证装载机在不同的使用条件下正常行驶和作业，并具有良好的动力性和经济性。使其具有能自动调节输出扭矩和转速；实现由低速重载到高速轻载的自动过渡；变矩比大，高效区域宽；起动、换挡接合平稳，实现无级变速，减轻操作人员劳动强度，提高舒适性等特点。并对其中部件如液力变矩器、超越离合器、转向泵、工作泵进行设计，确定其尺寸规格。阐明其中主要部件的工作原理以及各设计参数的选择和确定原则及方法。关键词: 装载机；动力匹配；液力变矩器；超越离合器8420 The Power Match System Design of ZL50 Loader Abstract：Loader is a high efficiency, flexible, versatile engineering machinery, complex working condition, frequent load changes, changes in range. How to make the most simple and suitable for the engine and transmission with external loads have always maintained the most reasonable match loader transmission has long been a problem. In this thesis, ZL50 loader as an object, to solve its power plant power output characteristics and work, walking devices contradictions between the various power requirements, implementation and engine work together to ensure that the loader to use in different normal driving conditions and jobs , and has good power and economy. It has able to automatically adjust the output torque and speed; achieve from low to high speed light load heavy automatic transition; variable torque ratio, efficient wide area; starting, smooth shift engagement, stepless, reduce labor intensity of operators and improve comfort characteristics. And which components such as torque converter, clutch, steering pump, working pump design, determine their sizes. Clarify the main components of which works as well as the selection of design parameters and determine the principles and methods. Keywords：ZL50 loader; Power match system; Hydraulic torque converter; The overrunning clutch 目 录 1. 课题背景 1 1.1 装载机应用简述 1 1.1.1装载机的分类 1 1.2 国内外轮式装载机的发展现状 1 1.2.1 国外轮式装载机的发展现状 1 1.2.2国内轮式装载机的发展现状 3 1.3 传动系统的组成 3 1.4 设计的技术要求与参数 4 2. ZL50装载机动力匹配系统设计方案 5 2.1 动力匹配系统的选择方案 5 2.2 液力变矩器选择方案 6 2.2.1 液力变矩器的工作原理 6 2.2.2 液力变矩器的种类 9 2.3 液力变矩器与柴油机的匹配方案 10 3. ZL50装载机动力匹配系统设计计算 12 3.1 柴油机的选择 12 3.2 变矩器的选择计算 13 3.3 ZL50装载机工作泵及转向泵的选择 14 3.4工作泵驱动轴的设计 15 3.4.1轴材料的选用 15 3.4.2轴的强度计算 15 3.5转向泵驱动轴的设计 20 3.5.1轴材料的选用 20 3.5.2轴的强度计算 20 3.6 主传动轴的设计 25 3.6.1 轴材料的选用 25 (责任编辑：qin) |