长臂挖掘机

省时 省力 省财富

We have developed a 14 meter two section telescopic arm for excavators with a capacity of 20-25 tons, which achieves multi-purpose use and increases the added value of the excavator. The 14 meter two section telescopic arm has played a huge role in special working conditions such as municipal construction, subway construction, foundation pit, and caisson excavation. At the same time, the swing distance of the telescopic arm is relatively short, and it can also be constructed in narrow areas, which can supplement the working conditions where the extended arm cannot be constructed.

一.伸缩臂的挖掘能力

1、 The digging ability of the telescopic arm

伸缩臂前置挖斗为0.45方挖斗，按照120挖掘机的前端小臂马拉头尺寸设计，具有挖掘能力96kn。14米伸缩臂可以下挖到13.8米的挖掘深度，相对于同等机型改造的18米的加长臂的挖掘深度都还要大一米，整体的工作效率要高于加长臂的工作效率。

The front bucket of the telescopic arm is 0.45 square meters, designed according to the size of the front small arm horse pull head of the 120 excavator, and has a digging capacity of 96 kn. The 14 meter telescopic arm can dig down to a maximum depth of 13.8 meters, which is one meter higher than the 18 meter extended arm of the same model modification. The overall work efficiency is higher than that of the extended arm.

二.伸缩臂的制造工艺

2、 Manufacturing process of telescopic arm

我们为了让20吨位挖掘机能够带的起14米的伸缩臂，我们突破性的采用了宝钢700材质加工伸缩臂的箱体结构，其余部位采用的是Q355B材质。伸缩臂的箱体折弯处理，不进行四面进行拼焊的加工工艺。伸缩臂的设计结构为国内首创设计，铲斗油缸的设计与国内大部分的伸缩不厂家不一样，这种设计方案让伸缩臂的挖掘力度更大。

In order to enable a 20 ton excavator to lift a 14 meter telescopic arm, we made a breakthrough by using Baosteel 700 material to process the telescopic arm box structure, while the rest of the parts were made of Q355B material. The box of the telescopic arm is bent and does not undergo welding on all four sides. The design structure of the telescopic arm is the first in China, and the design of the bucket oil cylinder is different from most telescopic manufacturers in China. This design scheme allows for greater excavation force of the telescopic arm.

同样在挖斗的设计，我们追求能够让用户在装车过程中不出现漏土与卸土方便，我们调整了整体铲斗油缸与连杆的角度，力求符合目前的整体工况要求。

Similarly, in the design of the excavator, we aim to ensure that users do not experience soil leakage or unloading during the loading process. We have adjusted the angle of the overall bucket oil cylinder and connecting rod to meet the current overall working conditions.

内置式的油缸，我们采用的国内知名油缸的供应优质油缸，同等吨位机型的伸缩臂油缸，我司配置油缸的活塞杆更大，缸筒外径更大，速度更快，使用寿命更长。同时在相等长度的伸缩臂，这款是伸缩臂可以多下挖50CM的深度。同时在举升的夹角与装车运输的夹角都是更加符合目前用户的使用。

The built-in oil cylinder is supplied by well-known domestic oil cylinder brands with high-quality oil cylinders, and the telescopic arm oil cylinder of the same tonnage model is equipped by our company. The piston rod of the oil cylinder is larger, the outer diameter of the cylinder barrel is larger, the speed is faster, and the service life is longer. At the same time, with an equal length of telescopic arm, this type of telescopic arm can dig an additional depth of 50CM. At the same time, the angle between lifting and loading transportation is more in line with the current user's usage.

三.伸缩臂结构组成

3、 Composition of telescopic arm structure

伸缩臂外筒

Telescopic arm outer cylinder

伸缩臂内筒

Telescopic arm inner tube

液压卷管器

Hydraulic pipe roller

内置式伸缩油缸、铲斗油缸

Built-in telescopic oil cylinder, bucket oil cylinder