A装配图
ZL50D翻斗油缸直接推拉式装载机的设计
摘要
装载机是一种非常大的工程机械，经常用在装卸比较散的物料，比如在矿尝基础建设、修建道路、企业、港口、货仓等进行装载、堆土、铲挖、起重、牵引等作业，具有工作效率高、机动性好、易于操作等优点，因此在工程建设中经常用到该机种，对于加快工程建设速度，减轻劳动强度，提高工程质量，降低工程成本都发挥着重要的作用，是现代机械化施工中不可缺少的装备之一。轮胎式装载机的工作装置是铲装、卸载的机构，它包括铲斗、动臂、举升油缸、转斗油缸、转斗杆件及其操作液压系统等。
此次的设计先对装载机的发展历程以及其设计的思路有一个清晰的认识，然后确定一个可靠的设计方案。主要是针对四杆机构的装载机进行设计，该机构结构简单，很容易设计成举升平动，前悬校首先进行了铲斗的设计，先对其结构形式有一定的了解，并在此基础上计算出参数，最后根据所算的结果设计出铲斗。然后对装置各个铰接点进行定点，并设计出连杆机构以及对工作装置的强度的进行计算，采用受力分析法进行计算分析，最后进行装载机液压缸的设计，选用合适的液压缸。
关键字：装载机；四杆机构；铲斗
Abstract
The loader is a larger type of construction machinery mainly consisting of loading and unloading of bulk materials. It is suitable for operations such as loading, heaping, shoveling, lifting, hauling, etc. in mines, infrastructure, road construction, enterprises, ports andwarehouses., It has the advantages of fast operation speed, high efficiency, good maneuverability, and easy operation, so it has become one of the main types of earth and stone construction in the construction of the project. It accelerates the construction speed, reduces the labor intensity, improves the project quality, and reduces the engineering cost. Playing an important role is one of the indispensable equipment in modern mechanized construction. Theworking device of thewheel loader is a shovel loading and unloading mechanism,which includes a bucket, a boom, a lift cylinder, a transfer cylinder, a stick member, and an operating hydraulic system.
This graduation project first had a clear understanding of the development history of the loader and the design ideas, and then determined a reliable design proposal. It is mainly designed for the loaderwith a four-bar mechanism. The structure of the mechanism is simple, and it is easy to design a lift for translation and front suspension. First, the design of the bucketwas carried out. Firstly, it had a certain understanding of its structural form, and based on this, the parameterswere calculated. Finally, the bucketwas designed based on the calculated results. Then, the hinge points of the device are fixed, and the link mechanism is designed and the strength of theworking device is calculated. The force analysis method is used for calculation and analysis. Finally, the hydraulic cylinder of the loader is designed and the appropriate hydraulic cylinder is selected.
Keywords: Loader; Four Bar Mechanism; Bucket
目录
第1章绪论- 5-
1.1用途- 5-
1.2分类- 5-
1.3国外装载机发展趋势- 7-
1.4国内装载机发展现状- 8-
1.5装载机表示法- 9-
第2章工作装置的组成及设计要求- 10-
2.1工作装置的组成- 10-
2.2工作装置的设计要求- 11-
2.3其他工作装置连杆机构的结构形式- 12-
2.4工作装置自由度的计算- 14-
第3章装载机工作装置设计- 16-
3.1工作装置的要求- 16-
3.2铲斗设计- 16-
3.2.1铲斗形状、结构- 16-
3.2.2铲斗基本参数确定- 18-
3.2.3铲斗容量的计算- 20-
3.3铲斗形心的计算- 21-
3.4正转四杆机构尺寸的确定- 22-
第4章装载机工作阻力计算- 26-
4.1铲斗插入阻力的计算- 26-
4.2铲取阻力计算- 28-
4.3转斗阻力矩- 28-
4.4铲斗在联合铲装时的物料的重量- 30-
第5章工作机构受力分析与强度计算- 32-
5.1外载荷确定原则- 32-
5.2联合铲装时的受力分析- 32-
5.3主要零件的强度计算- 35-
第6章液压缸的选择- 38-
6.1动臂油缸的设计计算- 38-
6.1.1动臂油缸的一般性能计算- 38-
6.1.2活塞杆的设计计算- 41-
6.1.3活塞的设计计算- 41-
6.1.4油口的设计- 42-
6.2转斗油缸的设计计算- 42-
6.2.1转斗油缸的一般性能计算- 42-
6.2.2活塞杆的设计计算- 44-
6.2.3活塞的设计计算- 44-
第7章销轴的计算- 46-
7.1 C点销轴的确定- 46-
7.1.1弯曲强度计算- 46-
7.1.2销轴支座挤压强度的计算- 47-
7.1.3销轴套挤压应力的计算- 47-
7.2其他各点销轴的计算- 48-
总结- 49-
附录- 50-
参考文献- 51-
致谢- 52-
铲斗
动臂
1字数
2摘要
3目录
4设计所包含文件
