单斗通用型液压挖掘机液压系统设计.doc
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- 通用型 液压 挖掘机 系统 设计
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1、 摘 要挖掘机作为我国工程机械中的主要机种之一,被广泛运用于各种工程施工行业中。由于挖掘机的工作环境比较恶劣,要求的动作也相对比较复杂。所以对于挖掘机来说液压系统的设计尤为重要。本文是关于36000KN单斗通用型液压挖掘机液压系统的设计,即液压系统方案的拟定,系统管路图的设计,液压油箱的设计。根据液压挖掘机的工作状况以及工况要求,液压系统的设计主要包括5个方面:行走系统,回转系统,铲斗系统,斗杆系统以及动臂系统的设计。为实现挖掘机各工况的基本要求,本论文中液压系统采用的是双泵双回路系统,其主要优点是发动机的功率能得到充分利用,同时实现了铲斗转动、斗杆收放和动臂提升有较快的工作速度,从而提高了生
2、产率。同时双泵回路采用手动阀操控简单,工作安全可靠。设计思路是从挖掘机总体以及各部分的工作性能和动作要求入手,以实现工作安全可靠,操作简单为目的,开发出自己的全套液压系统方案。经过认真地设计计算,查找资料撰写本次论文。最终完成了采用先导伺服控制,结构简单,清晰明了,造价低廉,便于检修的单斗通用型液压挖掘机的液压系统。该挖掘机可广泛应用于建筑,市政,供水,供气,供电,农林及园艺建设等工程。关键字:液压挖掘机;液压系统;单斗通用型;双泵双回路Abstract The excavator as one of the main types in Chinas construction machiner
3、y, is widely used in various engineering and construction industry. Excavators working environment is relatively poor, the requested action is relatively complex. For excavators hydraulic system design is particularly important. This article is about the 36000KN single general-purpose bucket hydraul
4、ic excavator hydraulic system design, program development of the hydraulic system, the system piping diagram of the design, the design of the hydraulic tank. Working conditions and the conditions required of the hydraulic excavator, hydraulic system design includes five aspects: the walking system,
5、rotary system, the bucket system, the system of the stick and boom system design. For the realization of the basic requirements of the conditions of the excavator, the hydraulic system used in this paper is dual-pump dual-circuit system, its main advantage is that the engine power can be fully utili
6、zed, while achieving a bucket rotating, retractable and move Stick Raising a faster pace of work, thereby increasing productivity. Dual-pump circuit with manual valve control is simple, safe and reliable. The design idea is from the starting performance and movements of the excavator in general, as
7、well as various parts of the requirements, in order to achieve safe and reliable, easy to operate for the purpose of developing its own full set of hydraulic system solutions. After careful design calculations, to find information to write this paper. The final completion of the pilot servo control,
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