挖掘机行走马达制动特性研究  

Research on the Buffer Braking Characteristic of the Excavator Traveling Motor

作　　者：李正祥 LI Zheng-xiang(Jiangsu Advanced Construction Machinery Innovation Center Ltd.,Xuzhou 211000,China)

机构地区：[1]江苏汇智高端工程机械创新中心有限公司,江苏徐州211000

出　　处：《液压气动与密封》2022年第3期51-53,74,共4页Hydraulics Pneumatics & Seals

摘　　要：针对某型号挖掘机液压行走马达制动冲击问题,对马达驻车延时制动阀和液压缓冲制动阀进行研究。分别建立了驻车延时制动阀CFD仿真模型和液压缓冲制动阀AMESim仿真模型,分析了马达驻车延时制动时间及不同阀芯阀套环形间隙、阀芯阻尼、缓冲活塞行程下的液压缓冲制动时间,对液压缓冲制动时间与延时制动时间进行了合理的匹配,保证了马达较好的制动性能。Focus on the braking shock of the hydraulic travel motor of a certain excavator,carry out a research on the delay brake valve and hydraulic buffer brake valve.CFD simulation models of delay brake valve and AMESim simulation models of buffer brake valve are established respectively,analyzed the parking delay braking time and hydraulic buffer braking time of different annular clearance between spool and sleeve,damping of spool and stroke of buffer piston.Matching hydraulic buffer braking time and parking delay braking time reasonable,ensure the better braking performance of the motor.

关 键 词：行走马达 制动冲击 驻车延时制动 液压缓冲制动 

分 类 号：TH137.51[机械工程—机械制造及自动化]