大型履带起重机起升机构闭式液压集中式补油系统研究  

Research on Closed Hydraulic Centralized Charging System for Lifting Mechanism of Large Crawler Crane

作　　者：姜振楠 王欣[1] 宋晓光 李万里 JIANG Zhennan;WANG Xin;SONG Xiaoguang;LI Wanli(School of Mechanical Engineering,Dalian University of Technology, Dalian Liaoning 116024,China;Dalian Yiwang Technology Co.,Ltd.,Dalian Liaoning 116024,China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024 [2]大连益网科技有限公司,辽宁大连116024

出　　处：《机床与液压》2021年第7期79-83,96,共6页Machine Tool & Hydraulics

摘　　要：以4000 t级大型履带起重机主起升机构闭式液压系统为研究对象,建立基于MATLAB的系统发热数学模型。分析不同系统工作压力以及输入转速下,集中式补油系统的参数设置。确定最大系统工作压力下,集中式补油系统的排量与冲洗阀的匹配关系。比较定量集中式补油系统与变量集中式补油系统对系统低压腔压力以及系统油温的影响,为后续集中式补油系统的参数设置与选型提供理论依据。The mathematical model was established for the closed hydraulic system of the main lifting mechanism of 4000 t large crawler crane.The parameter setting of the centralized charge system was analyzed under different working pressures and input speeds of system.The matching relationship between the displacement of the centralized charge system and the flushing valve was determined under the maximum system working pressure.The effects of quantitative centralized charge system and variable centralized charge system were compared on the pressure and oil temperature of the system low pressure chamber.It provides theoretical basis for the parameter setting and selection of centralized charge system.

关 键 词：履带起重机 闭式液压系统 集中式补油 

分 类 号：TH137[机械工程—机械制造及自动化]