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

挖掘機加長臂的使用范圍

Scope of use of excavator extension arm

挖掘機加長臂有兩段式挖掘機加長臂和三段式挖掘機加長臂，兩段式挖掘機加長臂主要適用于土石方基礎和深塹挖掘作業，河道清淤;三段式挖掘機加長臂主要適用于高層建筑的拆卸等工程。根據杠桿原理和力學原理，加長臂挖掘機的受力比原來減少，應該盡量不要去重作業的場合施工。

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.

三段式挖掘機加長臂如何拆樓?

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

主要還是看樓房高低而定，舉個例子，拆5層樓房：

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

1.必須先運來一些泥或工業垃圾墊底，使挖掘機升直沖擊錘可以夠得到樓頂。

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.待挖掘機開上填充物后先使其穩定，并且留有足夠的轉向空間。

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

3.用沖擊錘垂直墻面向里打墻(距頂1米左右)，把墻打開一個洞，碎料往里推，不要讓它掉下來砸到自己。

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.把洞擴大，先不要動梁和柱子。把磚墻打開后就打柱子，這樣上面的梁支持不住也會往里面掉，保證自己的安全。按這樣的順序從上到下，往里推進

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