In the process of daily operation, the extension arm and forearm of the excavator occasionally move slowly, especially in the process of house demolition. Is the difficulty because the extension arm is not selected correctly? In fact, it is the result of many factors. Next, please follow the editor to learn the following content, I hope you will have a harvest!

　　如果挖掘机的加长臂和前臂运动缓慢，可以从以下几个方面考虑。

　　If the extension arm and forearm of the excavator move slowly, the following aspects can be considered.

　　1. 上臂和前臂提踵悬垂失败的主要原因是上臂和前臂的曲轴传感器损坏。传感器的作用是一个普通的电位计，用来感知工作臂的角度，防止过度操作导致的倾侧或碰撞

　　1. The main reason for the suspension failure of the upper arm and forearm heel lift is the damage of the crankshaft sensor of the upper arm and forearm. The function of the sensor is a common potentiometer, which is used to sense the angle of the working arm and prevent the tilting or collision caused by over operation

　　2. 如果传感器出现故障或线路短路，就会造成上述故障。这个传感器不容易买到。

　　2. If the sensor fails or the circuit is short circuited, the above faults will be caused. This sensor is not easy to buy.

　　3修改两个电阻的原则很简单,是机器工作的手臂没有达到极限位置信号发送到挖掘机电脑板、电脑板继续工作向执行机构发出一个信号,如果传感器和机器不正常工作,可能是电脑板驱动管损坏,这种情况只能修理电脑。

　　3 the principle of modifying the two resistances is very simple. It is that the arm of the machine fails to reach the limit position signal, which is sent to the computer board of the excavator. The computer board continues to work and sends a signal to the actuator. If the sensor and the machine do not work normally, it may be that the driving pipe of the computer board is damaged. In this case, the computer can only be repaired.

　　了解产生的原因，还应掌握正确的伸缩臂拆卸方法:一定要先把一些泥土或工业垃圾搬到底部，使挖掘机的直冲锤能够到达屋顶;挖掘机加满油后，应保持稳定，并留有足够的转向空间。用冲击锤垂直着墙面(从顶部约1米处)，在墙面上开一个洞，把杂物推进去，不要让它掉下来砸到自己;挖掘机的伸缩臂打开砖墙后，会撞到柱子上，使上面的横梁无法支撑柱子并掉进去，保证了自身的。

　　To understand the causes, we should also master the correct method of dismantling the extension arm: first, we must move some soil or industrial waste to the bottom, so that the direct impact hammer of the excavator can reach the roof; after the excavator is filled with oil, it should be stable and have enough turning space. Use the impact hammer to perpendicular the wall (about 1 meter from the top), make a hole in the wall, push the sundries away, and don't let them fall down and hit yourself; after the expansion arm of the excavator opens the brick wall, it will hit the column, so that the upper beam can't support the column and fall in, ensuring its safety.