挖掘机加长臂分为二段式、三段式、四段式，二段式主要适用于土砂、混凝土等建筑搬运、高速公路坡面修整及河道疏通清淤及建筑基础、河道、深沟等土石方挖掘作业等；三段式、四段式主要适用于高层建筑楼体的拆解等作业等。主要的是：要根据加长臂重量的需要，适当加重后屁股配重块的配重重量，以保持前后平衡。避免挖掘机工作中出现事故。

The long arm of the excavator is divided into two section, three section and four section. The two section is mainly suitable for soil sand, concrete and other building handling, highway slope surface dressing, dredging and dredging of the river and building foundation, river and deep gully and so on. The three and four segments are mainly applied to the dismantling of high building buildings. Industry and so on. The most important thing is to increase the weight of the rear buttock counterweight according to the need of increasing the weight of the long arm, so as to maintain the balance before and after. Avoid accidents in the work of excavators.

挖掘机加长臂、加长大小臂主要配套机重及配置为：

The main matching and weight of excavators plus long arms and extended arms are as follows:

1、10-16吨位加长臂，可加长到13米，

The 1, 10-16 tonnage and long arm can be lengthened to 13 meters.

2、20-22吨位加长臂，可加长到15.4米，

The 2, 20-22 tonnage and long arm can be lengthened to 15.4 meters.

3、20-25吨位加长臂，可加长到18米

3, 20-25 tonnage plus long arm, can be lengthened to 18 meters

4、25-34吨位加长臂，可加长到20米

4, 25-34 tonnage plus long arm, can be lengthened to 20 meters

5、35-40吨位加长臂，可加长到22米

5, 35-40 tonnage plus long arm, can be lengthened to 22 meters

6、40-50吨位加长臂，可加长到24-26米

6, 40-50 tonnage plus long arm, can be lengthened to 24-26 meters

7、以上加长臂统一配置为：0．4方挖斗1个、铲斗油缸1支、销轴6支、 高压软管4条、黄油管3条、连杆总成一套。不管哪种车床，都需要莫氏锥度的配合，利用的是摩擦的原理，拔出来是利用顶丝顶出来的，利用的是杠杆原理。

7, the above plus long arms are uniformly configured as 0.4 sides, 1 bucket, 1 bucket, 1 pin, 4 high pressure hose, 3 butter tube and one connecting rod assembly. No matter what kind of lathe top, it needs the coordination of taper, using the principle of friction, drawing out is the top of the top wire, using the principle of lever.