摘要
针对某矿山发生的某型电动轮自卸车使用过程中电机主轴发生断裂故障,对电机主轴断裂的原因进行分析,认为弯曲载荷作用和断裂部位含较多的铁素体的组织是引起电机主轴疲劳断裂的主要原因。出现偏载的原因为行星轮轴承损坏后,导致行星轮与太阳轮间隙出现变化,对太阳轮产生了偏载;较多的粗大的针状铁素体降低了材料局部的疲劳强度和硬度。针对故障原因,提出改进措施。
For the motor spindle fracture failure of an electric wheel dumper in a mine,the causes of the motor spindle fracture are analyzed.It is considered that the bending load and the structure containing more ferrite in the fracture part are the main causes of the fatigue and fracture of the motor spindle.The reason for the eccentric load is that after the planetary gear bearing is damaged,the clearance between the planetary gear and the sun gear changes,resulting in the eccentric load on the sun gear.More coarse acicular ferrite reduces the local fatigue strength and hardness of the material.According to the fault causes,improvement measures are put forward.
作者
罗芳
罗朋
邓福承
Luo Fang;Luo Peng;Deng Fucheng
出处
《工程机械》
2022年第6期104-108,I0023,共6页
Construction Machinery and Equipment
关键词
电动轮自卸车
电机主轴
断裂
失效分析
Electric wheel dumper
Motor spindle
Fracture
Failure analysis
