The 14m two section telescopic boom developed for the 20-25 tonnage excavator has realized multiple uses of one machine and increased the added value of the excavator. The 14m two section telescopic boom has played a huge role in municipal construction, subway construction, foundation pit, open caisson excavation and other special working conditions. At the same time, the swing distance of the telescopic boom is short, and it can also be constructed in narrow places, which can supplement the working conditions that the extended boom cannot be constructed.

一.伸缩臂的挖掘能力

1、 Digging capacity of telescopic boom

14米伸缩臂前置挖斗为0.45方挖斗，按照小松120挖掘机的前端小臂马拉头尺寸设计，具有挖掘能力96kn。14米伸缩臂大可以下挖到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 14m telescopic boom is 0.45m3 bucket, designed according to the size of the front jib horse pull head of Komatsu 120 excavator, and has a digging capacity of 96kn. The 14 meter telescopic boom can dig down to a depth of 13.8 meters, which is one meter deeper than the 18 meter extended boom of the same model. The overall working efficiency is higher than that of the extended boom.

二.伸缩臂的制造工艺

2、 Manufacturing process of telescopic boom

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 boom, we made a breakthrough by using Baosteel 700 material to process the box structure of the telescopic boom, and the rest of the parts are made of Q355B material. The box body of the telescopic boom is bent, without the welding process on all sides. The design structure of telescopic boom is designed in China. The design of bucket cylinder is different from that of most domestic telescopic manufacturers. This design scheme makes the telescopic boom more powerful.

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 bucket, we seek to make it convenient for users to avoid soil leakage and unloading during loading. We have adjusted the angle between the integral bucket cylinder and the connecting rod to meet the requirements of 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。

For the built-in oil cylinder, we use the oil cylinder supplied by the domestic famous oil cylinder brand, and the telescopic arm oil cylinder of the same tonnage model. The piston rod of the oil cylinder configured by our company 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, the telescopic boom with the same length can dig down 50cm more. At the same time, the included angle of lifting and loading transportation is more consistent with the use of current users.

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The above is a detailed introduction to the leasing of the extended boom excavator, and we hope it will be helpful to you. If you have any questions, please contact us. We will provide services for you with our attitude //www.wondgo.com/