It is not recommended to modify the new machine because after being modified into an extended arm excavator, the excavator load will increase, and it is also easy to have after-sales service disputes with the original factory if the warranty period is not expired; It is not recommended to modify machines below 50% new, as the service life of the machine is relatively old and its performance is reduced in all aspects. In addition, the extended arm itself has a certain weight, making it difficult to achieve the efficiency that an extended arm excavator should have. The best option is to convert an excavator that is 50-80% new to an extended arm excavator

挖掘机加长臂的使用范围

Scope of use of excavator extension arm

挖掘机加长臂有两段式挖掘机加长臂和三段式挖掘机加长臂，两段式挖掘机加长臂主要适用于土石方基础和深堑挖掘作业，河道清淤;三段式挖掘机加长臂主要适用于高层建筑的拆卸等工程。根据杠杆原理和力学原理，华体会国际 的受力比原来减少，应该尽量不要去重作业的场合施工。

The extension arm of the excavator includes a two-stage excavator extension arm and a three-stage excavator extension arm. The two-stage excavator extension arm is mainly suitable for earthwork foundation and deep cutting excavation operations, as well as river dredging; The three section excavator with an extended arm is mainly suitable for demolition and other projects of high-rise buildings. According to the principle of leverage and mechanics, the force on the extended arm excavator is reduced compared to the original, and it should be avoided to carry out construction in heavy work situations as much as possible.

三段式挖掘机加长臂如何拆楼?

How to demolish a building with a three stage excavator and an extended arm?

主要还是看楼房高低而定，举个例子，拆5层楼房：

It mainly depends on the height of the building, for example, demolishing a 5-story building:

1.必须先运来一些泥或工业垃圾垫底，使挖掘机升直冲击锤可以够得到楼顶。

1. Some mud or industrial waste must be transported to the bottom first, so that the excavator can reach the top of the building with a straight impact hammer.

2.待挖掘机开上填充物后先使其稳定，并且留有足够的转向空间。

2. After the excavator is loaded with the filling material, make it stable and leave enough turning space.

3.用冲击锤垂直墙面向里打墙(距顶1米左右)，把墙打开一个洞，碎料往里推，不要让它掉下来砸到自己。

3. Use an impact hammer to hit the wall vertically inward (about 1 meter from the top), open a hole in the wall, and push the debris inward to prevent it from falling and hitting oneself.

4.把洞扩大，先不要动梁和柱子。把砖墙打开后就打柱子，这样上面的梁支持不住也会往里面掉，保证自己的。按这样的顺序从上到下，往里推进

4. Expand the hole without moving the beams and columns. After opening the brick wall, hit the pillar, so that if the beam on top cannot support it, it will fall inside, ensuring one's own safety. In this order, advance from top to bottom and inward