YZ12吨压路机车架装焊胎具设计
摘 要
YZ12吨压路机是一种高效的压实机械，广泛应用于道路建设施工中。对国内外压实机械发展史的研究，把握压实技术和压实机械的发展趋势及最新动态。为12T压路机产品的定位提供依据。
我国压路机，整体技术水平与国外相比仍有差距，主要表现在：产品型号不全、重型和超重型压路机生产数量和品种仍然较少、专用压实设备缺乏、综合技术经济指标和自动控制方面仍低于国外先进水平。
本文在理论分析和计算的基础上，完成了YZ12吨压路机总体和液压系统、振动轮总成、减振系统等车架装焊胎具设计的设计，在方案、结构和设计方法上进行了部分改动：采用全液压的传动方案，通过3个相互独立的液压回路实现行走、振动和转向三大基本功能，与机械传动相比在压实效果、爬坡能力、质量分配、操作控制和整体布局方面具备更大优势。转向结构采用铰接式车架折腰转向的方案，转弯半径小、机动性好、前后轮迹重叠、重心低、驾驶员视野开阔。制动系统采用静液压制动，多片式摩擦制动和电液操作下的同时制动，制动效果良好。激振器设计成振动轴加两个活动偏心块的结构形式，偏心块被放置在充满硅油的圆柱形箱体内，既实现了双频双幅的振动功能，又避免了对润滑油的搅动和强烈的换向冲击。减振系统采用橡胶减振器，利用更加简化的单自由度振动数学模型，推导出达到最大减振效果时减振系统总的动刚度，作为橡胶减振器设计的依据，并对压路机进行了稳定性分析。
关键词：YZ12吨压路机，总体设计，车架，液压，激振力，减振
ABSTRACT
Vibratory compaction is an efficient machine, widely used in the construction of road construction. The development of domestic and foreign research into the history compacting machinery, take compaction and compaction machinery ethnology trends and latest developments. 12T Roller products to provide the basis for positioning.
China road roller, the overall technological level compared with foreign countries there are still gaps, mainly in: Model insufficiency, heavy and extra heavy-duty roller number and variety of production is still small, specialized compaction equipment, lack of comprehensive technical and economic indicators and automatic control is still lower than the advanced level.
In this paper, theoretical analysis and calculation based on the overall completion of 12T vibratory roller and hydraulic systems, vibration wheel assembly, shock absorber system and other major components of the design, plan, structure and design methods for innovation: all-hydraulic transmission scheme, by three independent hydraulic circuit of walking, vibration and steering the three basic functions, and compared the compaction effect of mechanical drive, climbing ability, quality and distribution, operation control and the overall layout has more advantages. Turn structure using the program articulated frame waist to change direction, turning radius, mobility, front and rear tracks overlap, low center of gravity, the driver broad field of vision. Hydraulic brake system with static brake, multi-disc friction brake and electro-hydraulic operation, while braking, braking effect is good. Eccentric shaft vibration exciter designed to increase the structure of two active forms of eccentric, eccentric block is placed in cylindrical cabinets filled with silicone oil, both achieved double amplitude of the vibration frequency function, but also avoids the agitation and lubricants The impact is strong. Rubber shock absorber damping system is to use a more simplified single degree of freedom vibration model is derived for maximum vibration damping effect of the total system when the dynamic stiffness, as the basis for the design of rubber shock absorber, and the roller was stability analysis.
KEY WORDS: vibratory roller, design, frame, hydraulic, vibration force, vibration
目录
第一章 前言 1
1.1压实机械简介 1
1.1.1压实机械发展简史 1
1.1.2压实机械的分类 1
1.2国内外压实机械和压实技术的发展概况 2
1.2.1国内压实机械和压实技术发展概况 2
1.2.2国外压实机械和压实技术现状 3
1.2.3压实机械的发展趋势 5
1.3压路机发展的最新技术和趋势 6
1.4课题的提出和主要研究内容 8
1.4.1 YZ12吨压路机设计任务的提出 8
1.4.2 YZ12吨压路机设计的主要内容 9
1.5本章小结 9
第二章YZ12吨压路机总体设计 10
2.1机型的确定 10
2.2总体结构设计 11
2.3主要系统的设计方案 11
2.3.1传动系统的设计方案 11
2.3.2转向及车架的结构设计方案 13
2.3.3制动系统的设计方案 15
2.4基本参数的确定 16
2.4.1名义振幅 16
2.4.2振动频率 17
2.4.3振动加速度 18
2.4.4激振力和静偏心矩 18
2.4.6 YZ12吨压路机的基本参数表 20
2.5 本章小结 21
第三章 YZ12吨压路机的车架装焊胎具设计 23
3.1液压系统设计 23
3.1.1行走驱动液压系统设计 23
3.1.2振动液压传动系统设计 27
3.1.3转向液压传动系统设计 29
3.2车架装焊胎具设计及工作原理 31
3.2.1振动轮总成 31
3.2.2激振器结构设计及计算 32
3.2.3振动轴承的选择与校核 34
3.4 减振装置设计 35
3.4.1YZ12吨压路机的减振 35
3.4.2减振系统的减振系数与总刚度 35
3.4.3减振器的材料 37
3.4.4橡胶减振器的设计计算 37
3.4.6．橡胶减振器的校核计算 39
第四章 压路机整机稳定性分析 41
4.1稳定性工况分类 41
4.2坡道纵向静态稳定性 41
4.3计算结果分析及讨论 43
4.4关于整机稳定性的分析讨论 44
4.5 12T压路机稳定性计算分析 44
4．6本章小结 45
结论 46
致 谢 48
参考文献 49
