文档介绍：摘要
挖掘机,又称挖掘机械(excavating machinery),是用铲斗挖掘高于或低于承载面的物料,并装入运输车辆或卸至堆料场的土方机械。挖掘的物料主要是土壤、煤、泥沙以及经过预松后的土壤和岩石。从近几年工程机械的发展来看,挖掘机的发展相对较快,而挖掘机作为工程建设中最主要的工程机械机型之一,其正确的选型也就显得更为重要。
在参照和分析履带式挖掘机的基础上,对小型液压挖掘机进行设计。本次设计的主要内容是挖掘机的底盘部分。挖掘机的底盘部分主要包括车架、行走装置和悬架三部分。行车架是整体骨架,用来安装所有的总成和部件。行走装置用来支持机体,把动力装置传到驱动轮上的驱动转矩和旋转运动变为车辆工作与行驶所需的驱动力和速度。悬架是车架和行走装置之间互相传力的连接装置。
本文在详述履带行走装置整体设计的基础上,又对驱动轮、拖链轮、导向轮、支重轮结构进行了设计,对一些关键部分进行了设计校核计算。对各个轮的加工工艺有粗略的描述。
关键词:挖掘机,行走装置,四轮一带,张紧装置
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Abstract
Excavator is also called mining machinery (excavating machinery), which is used to excavate materials that are higher or lower than the bearing surface and then put materials into transport vehicle or unloaded them to stocking yard. The materials what mining machinery excavate are soil, coal, sand and some rocks which are pre-digged. With the development of mechanical engineering in recent years, excavating machinery is relatively faster than others. Excavators, one of the most important models of machinery construction, the correct selection of the model is especially important to it.
On the base of reference and analysis of crawler excavators, have designed excavator non-tail excavator. The main design pact hydraulic excavators’ Chassis parts. The chassis parts include three parts. Overall skeleton frame is used to install all the assemblies ponents. Walking device used to support the body, the power plant came on the drive wheel torque and rotary movement into a vehicle required for working and driving the driving force and speed. Suspension is a walking frame and transmission device between the connected devices.
In this paper, detailed walking track devices based on the overall design, but also on the driving wheel, drag chain, guide wheel, supporting wheels structure design, for some of the key parts of the design verification calculation. For each round of processing technology has a rough description.
Key Words: excavating machinery,travel system,four wheels and one belt,tensioning device
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