The function of excavator must not be small enough to make up for too many introductions. We can understand that in our daily life and study, many excavators with special requirements will choose to install the telescopic boom, so what kind of excavator is suitable for installing the telescopic boom? How to solve the deviation problem after installing the excavator? The telescopic boom of the excavator is introduced in detail.

　　一、什么样的挖掘机可以用长臂挖掘机改装

　　1、 What kind of excavator can be refitted with a long arm excavator

　　不建议对新机器进行改装，因为改装后挖掘机臂长，挖掘机负荷增加，且没有保修期限，容易与原厂家售后服务产生纠纷;不建议改装机器低于50%新的,因为这台机器有一个旧的使用寿命,在所有方面的性能下降,和伸出臂本身有一定的重量,很难发挥延伸臂挖掘机由于效率,更好的是5 - 80%的新挖掘机改装成伸出臂挖掘机。

　　It is not recommended to refit the new machine, because after refitting, the arm of the excavator is long, the load of the excavator increases, and there is no warranty period, so it is easy to have disputes with the after-sales service of the original manufacturer; it is not recommended to refit the machine less than 50% new, because the machine has an old service life, the performance in all aspects decreases, and the extension arm itself has a certain weight, It's hard to play with reach excavators because of the efficiency, the best is that 5 - 80% of new excavators are converted into reach excavators.

　　二世。挖掘机伸缩臂使用范围

　　II. Scope of use of excavator extension arm

　　挖掘机的伸缩臂由挖掘机的两段伸缩臂和挖掘机的三段伸缩臂组成。三级挖掘机的伸缩臂主要用于高层建筑的拆除。根据杠杆和力学原理，华体会国际 的受力比原来要小，应尽量不去繁重的工地施工。

　　The telescopic arm of the excavator consists of two telescopic arms of the excavator and three telescopic arms of the excavator. The telescopic arm of the three-stage excavator is mainly used for the demolition of high-rise buildings. According to the principle of lever and mechanics, the force of the long arm excavator is smaller than the original one, so it should not go to the heavy construction site as much as possible.

　　运行偏差故障:

　　Operation deviation fault:

　　摘要当有伸缩臂的挖掘机出现跑偏故障时，应检查挖掘机的组合阀。取下限压阀上的2根油管，用插头堵住出油口，启动发动机，用插头组合阀拉动华体会国际 移动控制手柄，检测正常油压;然后拆开另一侧组合阀上的两根油管，重新启动发动机，观察限压阀上的两个油孔是否有漏油流出，如果没有漏油现象，则组合阀故障。这时，我们应该检查一下旋转接头。

　　When the excavator with telescopic arm has a deviation fault, the combination valve of the excavator should be checked first. Take 2 oil pipes on the lower limit pressure valve, plug the oil outlet, start the engine, pull the long arm excavator with the plug combination valve to move the control handle, and check the normal oil pressure; then dismantle the two oil pipes on the combination valve on the other side, restart the engine, and observe whether there is oil leakage from the two oil holes on the pressure limiting valve. If there is no oil leakage, eliminate the combination valve fault. At this point, we should check the central swivel.

　　由于旋转接头的油路较多，油路容易串通，所以我们可以先拆下2根行走电机油管，再拆下1根电机油管。操作完毕后，重新启动发动机，拉动油管马达换向阀将其堵塞，观察油压是否过低，液压马达油孔是否有油流出。

　　Since there are many oil circuits in the central rotary joint, the oil circuits are easy to be connected, so we can remove two oil pipes of the traveling motor first, and then one oil pipe of the motor. After the operation, restart the engine, pull the oil tube motor reversing valve to block it, and observe whether the oil pressure is too low and whether there is oil flowing out of the oil hole of the hydraulic motor.