小型挖掘机液压系统设计（全套含CAD图纸）.zip

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摘要
本次设计的题目是小型挖掘机液压系统设计。与其它类型的挖掘机相比,这种类型的挖掘机因有良好通过性能应用最广,对松软地面或沼泽地带还可采用加宽、加长以及浮式履带来降低接地比压。
液压挖掘机的主要特点为:能无级调速且调速范围大,能得到较低的稳定转速,快速作用时,液压元件产生的运动惯性小,加速性能好,并可作高速反转,传动平稳,结构简单,可吸收冲击和振动,操纵省力,易实现自动化控制,易于实现标准化、系列化、通用化。
,它属于小型液压挖掘机,主要设计挖掘机的工作装置、液压传动原理。
在设计中,采用了履带式行走装置,来满足要求。上部转台是全回转式,因此它可在一个更大的范围内工作。又因采用液压传动控制而使整机性能得以改善。与机械式挖掘机相比,其挖掘力提高到2~3倍,整机质量约为5吨,挖掘力约为30kN,,,,从中可以看出整机作业能力有了很大的改进,不仅挖掘力大,且机器重量轻,传动平稳,作业效率高,结构紧凑。另外,还对挖掘机的工作装置提出基于结构推理的机构方案创新设计方法。
关键词:液压挖掘机;挖掘机构;液压系统
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Abstract
This design topic is the design of small excavator hydraulic system. Compared with other types of excavator, this type of excavator for good through the performance is the most widely used, soft ground or marshes can also use widened, extended and serving the crawler to reduce ground pressure.
The hydraulic excavator main characteristic is: stepless speed and speed range, can get a stable low speed, fast action, hydraulic parts produce inertia small, good acceleration performance, and can be used for high speed inversion, smooth transmission, simple structure, can absorb shock and vibration, labor-saving operation, easy realization of automation control, easy to realize the standardization, seriation, generalization.
This design is the main parameters of bucket capacity , it belongs to a small hydraulic excavator, working device of hydraulic excavator, the main design of transmission principle.
In the design, using the crawler walking device, to meet the requirements. The upper table is full rotation, so it can work in a greater scope. Because of the use of hydraulic drive and control the entire machine performance can be improved. Compared with the mechanical excavator, the digging force is increased to 2 to 3 times, the quality is about 5 tons, mining capacity is about 30kN, the maximum discharge height is about , the maximum digging depth is , maxim