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    2019/12/10    来源:    作者:伸缩臂挖机租赁  阅读:次  【打印此页】

    前段时间有机主提到挖机装了加长臂以后,使用时间长了会感觉无力动力弱,经我们技术人员的检测给出了结论,下面挖机加长臂厂家来为您好好介绍。
      Some time ago, the organic owner mentioned that after the excavator is equipped with an extension arm, it will feel powerless and weak when it is used for a long time. After the inspection by our technicians, we have given a conclusion. The manufacturer of the extension arm of the excavator will give you a good introduction.
      1、挖机右行走和铲斗无动作,动臂和斗杆动作慢
      1. The excavator moves right and the bucket does not move, and the boom and the stick move slowly
      据机老板反应在更换完控制阀总成的密封后即出现此故障。测后泵收铲斗时的压力为1.5Mpa,远小于正常值的28.5Mpa。在准备交换两路的安全阀时,发现故障一侧的安全阀位置上为一堵头而原堵头的位置却安装了安全阀。交换正确位置后机器正常。
      According to the owner's reaction, the failure occurred after the seal of the control valve assembly was replaced. After the test, the pressure when the pump retracts the bucket is 1.5MPa, far less than the normal value of 28.5mpa. When preparing to exchange two-way safety valves, it was found that the position of the safety valve on the fault side was a plug while the position of the original plug was installed with a safety valve. The machine is OK after exchanging the correct position.
      2、改装成挖机加长臂后,全车慢、无力
      2. The whole car is slow and powerless after it is refitted into a long arm of an excavator
      机主反映刚更换了先导泵油封,但更换后工作了十几分钟一直很正常,然后突然就不行了。根据此情况,首先怀疑先导压力不足。经测试先导压力极低,决定分解先导泵。
      The owner said that the oil seal of the pilot pump had just been replaced, but it worked normally for more than ten minutes after the replacement, and then it suddenly failed. Based on this condition, first suspect that the pilot pressure is insufficient. After testing the pilot pressure is very low, it is decided to disassemble the pilot pump.
      一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。继续分解发现先导泵的油封方向装反。此处才是故障的真正原因,当刚开始工作时,骨架油封没有损坏,仍可正常工作,因骨架油封只能承受低压,故油封很快损坏,导致先导压力油从损坏处泄出。
      One is that the framework oil seal of the input shaft of the pilot pump has been extruded. There are two reasons: one is the installation problem, the other is that the pressure there is too high. Continue to disassemble and find that the oil seal of the pilot pump is installed in the opposite direction. This is the real cause of the fault. When the skeleton oil seal started to work, it was not damaged and could still work normally. Because the skeleton oil seal can only bear low pressure, so the oil seal was damaged quickly, leading to the leakage of pilot pressure oil from the damaged place.

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