伸縮臂挖機租賃能告知你的是，伸縮臂挖機具有哪些特征，因為這種設備是裝在挖掘機大臂上的一種特殊工作裝置；用于靈活擴展其作業半徑以及垂直深挖范圍。
What the leasing of telescopic boom excavator can tell you is what characteristics the telescopic boom excavator has, because this equipment is a special working device installed on the boom of excavator; It is used to flexibly expand its operation radius and vertical deep excavation range.
外伸縮臂，其特征主要在于：
The extended and retracted arm is mainly characterized by:
1、外伸縮臂由上滑動臂與下固定臂兩部分構成，上滑動臂安裝在下固定臂上方，通過兩側滾輪及道軌上下組成活動體，通過伸縮缸的伸縮來推動上滑動體前后自由伸縮
1. The extended and retracted arm is composed of an upper sliding arm and a lower fixed arm. The upper sliding arm is installed above the lower fixed arm and forms a movable body up and down through rollers on both sides and track rails. The upper sliding body can expand and retract freely back and forth through the expansion and contraction of the expansion cylinder

2、上滑動臂內裝伸縮缸，伸縮缸的缸體固定在下固定臂上，伸縮缸活塞桿固定在上滑動臂上。其主要部件有：固定體、移動體、滑塊、伸縮缸等。外伸縮臂具有受力大、結構簡單，能夠自由調整工作半徑、調整挖掘深度，易于操作，適應特定環境作業。但其行程較小，一般其行程在4米內。
2. A telescopic cylinder is installed in the upper sliding arm, the cylinder body of the telescopic cylinder is fixed on the lower fixed arm, and the piston rod of the telescopic cylinder is fixed on the upper sliding arm. Its main components are: fixed body, moving body, sliding block, telescopic cylinder, etc. The extended and retracted arm has the advantages of large force, simple structure, free adjustment of working radius and excavation depth, easy operation and adaptation to specific environment. However, its travel is small, generally within 4 meters.
內伸縮臂，其特征主要在于：
The inner telescopic boom is mainly characterized by:
1、內伸縮臂是由移動體套入固定體內，通過伸縮缸的伸縮使移動體伸出及縮回，從而達到自由伸縮的目的；
1. The inner telescopic arm is sleeved into the fixed body by the moving body, and the moving body extends and retracts through the expansion and contraction of the telescopic cylinder, so as to achieve the purpose of free expansion and contraction;
2、其結構只有一個固定體和一個或多個移動體，節為固定體，其余的是移動體，移動體按其大小先后順序套入固定體內，原理是二節套入一節、三節套入二節….，通過伸縮缸使其有順序伸出或縮回；內伸縮臂其結構較復雜、生產成本較高，一般設計成兩節以上，用于深坑作業的抓取與揚土。其優點是增大了作業半徑以及挖掘深度。
2. Its structure has only one fixed body and one or more moving bodies. The first section is the fixed body and the rest is the moving body. The moving body is sleeved into the fixed body according to its size order. The principle is that two sections are sleeved into one section and three sections are sleeved into two sections, Extend or retract the telescopic cylinder in sequence; The internal telescopic boom has complex structure and high production cost. It is generally designed into more than two sections for grasping and lifting soil in deep pit operation. Its advantage is that it increases the operation radius and excavation depth.