TY220J型推土机工作装置液压系统可靠度及常见故障分析  

Analysis for Reliability and Common Failures of Hydraulic System of the Attachment on Model TY220J Dozer

作　　者：窦春雨[1] 霍晓强[1] 沈云峰[1] 

机构地区：[1]工程兵指挥学院工程装备教研室

出　　处：《工程机械》2010年第8期64-67,共4页Construction Machinery and Equipment

摘　　要：介绍TY220J型高原履带式推土机工作装置液压系统的组成及工作原理,为找出工作装置中的可靠性薄弱环节,建立工作装置液压系统串-并联结构可靠性框图,给出各液压元件的基本失效率,计算各液压系统的基本故障率,建立了系统可靠度表达式。介绍可靠性较低的铲刀液压系统的常见故障原因及排除方法。Composition and work principle of attachment hydraulic system of model TY220J crawler dozer for high land use are described in the article. In order to pick up the weak locations on reliability in the attachment, a reliability block diagram with serial-parallel structures is plotted for its hydraulic system. Basic failure rate of each hydraulic unit is presented. Basic failure rate of the hydraulic system is calculated and formula of reliability is set up for the system. Troubleshooting for common failures of blade hydraulic system with low reliability is expatiated.

关 键 词：推土机 液压系统 可靠性 故障 

分 类 号：TU623.5[建筑科学—建筑技术科学]