浅谈挖掘机加长臂容易出现的问题! - 租赁动态

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浅谈挖掘机加长臂容易出现的问题!

日期:2019-01-24   来源:http://www.rbaras.com
1、挖机右行走和铲斗无动作,动臂和斗杆动作慢
1. The digger moves right and the bucket does not move, the moving arm and the bucket pole move slowly.
据挖机老板反应在替换完控制阀总成的密封后即呈现此毛病。测后泵收铲斗时的压力为1.5Mpa,远小于正常值的28.5Mpa。
According to the response of the owner of the excavator, after replacing the seal of the control valve assembly, the defect appears. After measurement, the pressure of the pump bucket is 1.5 Mpa, which is much lower than the normal value of 28.5 Mpa.
在准备交流两路的阀时,发现毛病一侧的阀方位上为一堵头而原堵头的方位却安装了阀。交流正确方位后机器正常。本来修理人员替换完控制阀总成的密封后,将该组阀的阀与堵头方位装反。
When preparing for two-way AC valves, it was found that there was a plug on the wrong side of the valve orientation, while the original plug orientation was installed with a valve. The machine is normal after correctly communicating with each other. After the original repairman replaced the seal of the control valve assembly, the valve and the plug position of the group of valves were reversed.
2、改装成挖掘机加长臂后,全车慢、无力
2. After refitting the excavator to lengthen the arm, the whole vehicle is slow and weak.
机主反映刚替换了先导泵油封,但替换后工作了十几分钟一直很正常,然后俄然就不行了。根据此状况,首要置疑先导压力缺乏。
The pilot pump oil seal has just been replaced by the host, but it has been working normally for ten minutes after the replacement, and then suddenly it will not work. According to this situation, the lack of pilot pressure is the primary question.
经测验先导压力极低,决议分化先导泵。
After testing, the pilot pressure is very low and the pilot pump is decided to differentiate.
发现先导泵输入轴的骨架油封已挤出,此原因有两种:一是安装问题,二是该处压力过高。
It is found that the skeleton oil seal of the input shaft of the pilot pump has been extruded. There are two reasons for this: one is the installation problem, the other is that the pressure is too high.
继续分化发现先导泵的油封方向装反。此处才是毛病的原因,当刚开始工作时,骨架油封没有彻底损坏,仍可正常工作,因骨架油封只能接受低压,故油封很快损坏,导致先导压力油从损坏处泄出。
Continuous differentiation found that the oil seal direction of the pilot pump is reversed. This is the reason for the trouble. When the skeleton oil seal is first working, it is not completely damaged, but it can still work normally. Because the skeleton oil seal can only accept low pressure, the oil seal is quickly damaged, resulting in the leakage of the pilot pressure oil from the damaged place.
3、改装成挖掘机加长臂后,发动机起动后斗杆油缸的活塞杆主动缩回,其它动作正常。
3. After refitting the excavator to lengthen the arm, the piston rod of the bucket rod cylinder retracts actively after the engine starts, and other actions are normal.
经查看,一其他动作正常;二提起动臂后斗杆下沉较快。交流斗杆先导管后毛病依旧,阐明毛病在控制阀或斗杆油缸,本着先易后难的原则。
After checking, one other action is normal; the bucket rod sinks faster after the second lifting starting arm. The fault of AC bucket rod is still the same after catheterization. It is stated that the fault is in the control valve or bucket rod cylinder, based on the principle of easy first and difficult later.
拆检控制阀杆,发现阀杆卡在活塞杆缩回方位,用橡胶螂头和铜棒轰动后取出阀杆。可见有闪亮铁末,联系斗杆下沉较快。判别毛病根源为加长臂斗杆缸筒拉伤,拆检斗杆油缸后证实。
The control valve stem was disassembled and checked. It was found that the valve stem was stuck in the retracted position of the piston rod. The valve stem was removed after being stirred by a rubber Hydra head and a copper rod. It can be seen that there are shining iron poles, the connection bucket rod sinks faster. The root cause of the defect was the pull of the cylinder of the extended arm bucket rod, which was confirmed after the bucket rod cylinder was dismantled and inspected.
以上的新闻是我们加长臂挖掘机整理发布希望对大家有所帮助我们的网站是:http://www.rbaras.com
The above news is that our long arm excavator is organized and released. We hope to help you with our website: http://www.rbaras.com!

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