1.兩段式加長臂：使用范圍相對較大，但是他的主要功能也即是為了提升挖掘半徑，在清理河道，填海造地，地鐵出入口開挖，人行地底隧道，還有高速公路防護墻修整，一般住宅輸送一下水泥等等。也有人用他前置破碎錘作用于房屋拆遷的，不過比較危險。兩段式加長臂一般10-26米區間改裝比較多。
1. Two section lengthening arm: The scope of use is relatively large, but its main function is to increase the excavation radius, such as clearing river channels, filling the sea to create land, excavating subway entrances and exits, underground pedestrian tunnels, repairing highway protective walls, and transporting cement to general residential areas. Some people also use his front crushing hammer to act on house demolition, but it is quite dangerous. Generally, there are more modifications in the 10-26 meter section of the two-stage extension arm.
2.三段式加長臂：或者多段式加長臂，主要應用于高層建筑的拆遷，前置破碎錘或者液壓鉗。20-28米內使用者比較多。
2. Three section extension arm: or multi section extension arm, mainly used for demolition of high-rise buildings, with a front crushing hammer or hydraulic pliers. There are many users within 20-28 meters.
3.滑臂或者內伸縮臂：主要為了回轉半徑很小，但是挖掘深度要求很高的工況設計，一般會前置貝殼挖斗（貝形斗）?；鄞怪蓖诰蛏疃纫话銥?0米，內伸縮臂垂直挖掘深度一般在26米以內。
3. Sliding arm or inner telescopic arm: It is mainly designed for working conditions with a very small Radius of gyration but high requirements for excavation depth. Generally, the shell bucket (shell bucket) is placed in front. The maximum depth for vertical excavation of the sliding arm is generally 10 meters, and the vertical excavation depth of the inner telescopic arm is generally within 26 meters.
4.打樁機加長臂：大小臂平直，前置彎臂2.6米左右（主要是為了與振動錘連接是便與閥塊和管路的安裝）及震動錘，應用于修建公路鐵路或者埋設管道的時候打拔鋼板樁。
4. Extended arm of Pile driver: the big and small arms are straight, and the front bent arm is about 2.6 meters (mainly for connecting with the vibrating hammer to facilitate the installation of valve blocks and pipelines) and the vibrating hammer are used to drive and pull steel sheet piles when building roads and railways or embedding pipelines.
5.抓木機、抓料機裝卸煤機加長臂：更多的時候為了裝卸火車或者汽車而設計，一般大臂7.6米，小臂5-6米.前置抓木器、抓鉗器或者貝殼挖斗。
5. Wood grabbing machine, material grabbing machine, and coal loading and unloading machine with extended arms: more often designed for loading and unloading trains or cars, usually with a large arm of 7.6 meters and a small arm of 5-6 meters. Front mounted wood grabbing machine, pliers or shell excavator.
This article is dedicated to the friendship of renting out long arm excavators. For more information, please click on: http://www.6160773.com/ Sincere attitude. We will provide you with comprehensive services. We will gradually contribute more relevant knowledge to everyone. Stay tuned
