| 品牌KOMATSU/小松 | 型号D275A-5 |
| 配件适用对象推土机 | 规格D275A-5 |
d275a-5链条17m-32-00400 小松推土机链条 支重轮等 d275底盘件
大机型底盘件 四轮一带 品质好 质保用的时间长
现货 库存足够
微信同号 张然 13563767560
挖掘机曲轴异响故障维修如果曲轴滚动轴承径向间隙过大,运转中会发出"霍、霍"的响声.?
2 挖掘机整体式曲轴.
发动机突然加速时,会发出沉重而有力的"刚、刚"的金属敲击声,严重时机体发生振动,响声随负荷增大而增大,相邻两缸断火时,呼声减弱或消失,伴有机油压力下降.
四川达州"山东临工曲轴主轴承响"故障原因分析:
曲轴主轴承响是因其轴承与轴颈配合间隙过大.发动机在运转过程中,由于活塞顶部气体压力和活塞、连杆、活塞销产生的惯性力以及曲轴旋转产生的离心力,形成一个合力,使曲轴主轴颈与轴承产生撞击而发出响声.
1 曲轴磨损:曲轴主轴颈与轴承由于长时间正常工作而磨损,造成配合间隙增大;润滑油品质差、发动机温度过高或负荷过大等原因造成润滑不良,也会使曲轴主轴承与轴颈磨损加大,配合间隙增大.
2 曲轴松动：如果曲轴主轴承盖螺栓松动,使曲轴主轴颈与轴承的磨损加剧,配合间隙增大.
扩展阅读:
挖掘机山东临工曲轴轴向窜动发响:
挖掘机曲轴轴承窜动异响的现象与曲轴主轴承响相似.
挖掘机曲轴异响原因分析:
曲轴必须有一定的轴向间隙,因此,受轴向力的作用会前后窜动,为了限制曲轴前后窜动,一般在曲轴上装有限位止推垫.发动机工作时,曲轴旋转,止推垫必然磨损,止推垫变薄轴向间隙增大到一定程度时,曲轴前后窜动造成撞击而发出异响.
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