关于加长臂，我相信很多从事机械行业的朋友都不陌生，在市政建设、地铁交通的完善、下水道的改建、河道清理等都需要大量的工程机械设备，而标准的挖掘机械又完成不了特殊化的工程作业，所以此时华体会国际 利用超长型动臂和超长型斗杆来大展神威，可在疏浚、护岸、坡面以及地铁建设等受地面环境限制的工况下，发挥巨大的威力。
As for the extended boom, I believe that many friends in the machinery industry are familiar with it. A large number of engineering machinery and equipment are needed in municipal construction, subway traffic improvement, sewer reconstruction, river cleaning, etc., and standard excavation machinery can not complete special engineering operations. Therefore, the extended boom excavator uses the super long boom and super long bucket to show its power in dredging, bank protection The slope and subway construction will exert great power under the working conditions limited by the ground environment.
一般常见的有以下几个应用领域：
Generally, the following application fields are common:
1.两段式加长臂：使用范围相对较大，但是他的主要功能也即是为了提升挖掘半径，在清理河道，填海造地，地铁出入口开挖，人行地底隧道，还有高速公路防护墙修整，一般住宅输送一下水泥等等。也有人用他前置破碎锤作用于房屋拆迁的，不过比较危险。两段式加长臂一般10-26米区间改装比较多。
1. Two segment extension arm: relatively large scope of use, but its main function is to improve the excavation radius, such as river cleaning, land reclamation, subway entrance and exit excavation, pedestrian tunnel, highway protective wall repair, and general residential transportation of cement. Some people also use the front breaking hammer to act on house demolition, but it is dangerous. The two-stage extension boom is usually refitted in the 10-26m section.
2.三段式加长臂：或者多段式加长臂，主要应用于高层建筑的拆迁，前置破碎锤或者液压钳。20-28米内使用者比较多。
2. Three segment extension arm: or multi segment extension arm, mainly used for demolition of high-rise buildings, front crushing hammer or hydraulic tongs. There are many users within 20-28 meters.
3.滑臂或者内伸缩臂：主要为了回转半径很小，但是挖掘深度要求很高的工况设计，一般会前置贝壳挖斗（贝形斗）。滑臂垂直挖掘大深度一般为10米，内伸缩臂垂直挖掘深度一般在26米以内。
3. Sliding arm or inner telescopic arm: mainly designed for working conditions with small turning radius but high requirements for excavation depth, usually the shell bucket (shell bucket) is placed in front. The vertical excavation depth of sliding arm is generally 10m, and the vertical excavation depth of inner telescopic arm is generally within 26m.
4.打桩机加长臂：大小臂平直，前置弯臂2.6米左右（主要是为了与振动锤连接是便与阀块和管路的安装）及震动锤，应用于修建公路铁路或者埋设管道的时候打拔钢板桩。
4. Extended arm of pile driver: the big and small arms are straight, the front bent arm is about 2.6m (mainly for connecting with the vibratory hammer to facilitate the installation of valve block and pipeline) and the vibratory hammer are used to drive and pull steel sheet piles when building roads and railways or burying pipelines.

5.抓木机、抓料机装卸煤机加长臂：更多的时候为了装卸火车或者汽车而设计，一般大臂7.6米，小臂5-6米.前置抓木器、抓钳器或者贝壳挖斗。
5. Wood grabbing machine, coal loader and coal loader extension arm: more often, it is designed for loading and unloading trains or cars, with a general boom of 7.6 meters and a small boom of 5-6 meters. The front wood grabber, gripper or shell bucket.
挖掘机大小臂改装前提是要考虑动力，液压以及配重平衡几个方面。
The precondition for refitting the boom and jib of excavator is to consider power, hydraulic pressure and counterweight balance.
什么样的挖掘机可
What kind of excavator can
改装成长臂挖掘机
Refit long arm excavator
新机不建议改装，因为改装成长臂挖掘机以后，挖掘机负荷增大，况且没过保修期容易与原厂产生售后服务的纠纷；
It is not recommended to refit the new machine, because after refitting the long arm excavator, the load of the excavator will increase, and it is easy to have after-sales service disputes with the original factory without exceeding the warranty period;
五成新以下的机也不建议改装，因为机器使用年限比较旧，各方面性能减退，加上加长臂本身也有一定重量，很难发挥出华体会国际 应有的效率，好的是5-8成新的挖掘机改装成华体会国际 。
It is also not recommended to refit the machine below 50% new, because the service life of the machine is relatively old, the performance of all aspects is degraded, and the extension arm itself has a certain weight, so it is difficult to give full play to the efficiency of the extension arm excavator. The good thing is that the 5-80% new excavator is refitted into the extension arm excavator.
旧挖掘机改装挖掘机
Old excavator refitted into excavator
加长臂应排除的问题
Problems to be eliminated for the extension arm
旧挖掘机标准臂改装挖掘机加长臂，要衡量挖掘机的使用性能，如液压输出是否达到一定压力；行走机构、转盘结构等是否能承载挖掘机加长臂，承载多长的加长臂？
When refitting the standard arm of an old excavator to the extended arm of an excavator, the first thing to do is to measure the performance of the excavator, such as whether the hydraulic output reaches a certain pressure; Whether the traveling mechanism, rotary table structure, etc. can bear the excavator extension arm, and how long the extension arm can bear?
旧挖掘机使用年限以及施工作业时间长短等原因，对挖掘机本身的性能好坏有着直接影响，比如没挖掘力，举臂无力，行走缓慢等。挖掘机有着这些原因，改装成加长臂后，很难发挥出华体会国际 应有的效率。
The service life of the old excavator and the length of construction time have a direct impact on the performance of the excavator itself, such as no digging force, weak lifting arm, slow walking, etc. For these reasons, it is difficult to give full play to the efficiency of the extended boom excavator after it is refitted into the extended boom excavator.
在改装前好对挖掘机进入质量检测，通过质量检测，更清楚的了解自身挖掘机性能，才能选择更适配的加长臂进行改装！
Before refitting, it is better to conduct quality inspection on the excavator. Through the quality inspection, we can better understand the performance of our excavator, so that we can choose a more suitable extension arm for refitting!
明确挖掘机加长臂
Define the excavator extension arm
作业要求与工况环境
Operation requirements and working conditions
挖掘机加长臂的长短与挖掘机自身质量与输出压力有着直接关系。我们在选配挖掘机加长臂时，要根据挖掘机作业环境、作业要求、自身质量、挖斗等附属装置容量大小来衡定配置多长的挖掘机加长臂；两段式挖掘机加长臂在施工作业中常涉及到挖掘高度、挖掘深度、工作半径三个主要参数；而三段式拆楼机加长臂常涉及到举升高度、作业高度、作业半径这三个主要参数。只有综合因素方能确定该机型可配多长的挖掘机加长臂。
The length of the excavator's extended arm is directly related to the excavator's own mass and output pressure. When selecting the excavator extension arm, we should determine the length of the excavator extension arm according to the excavator operating environment, operating requirements, self quality, bucket and other auxiliary device capacity; In the construction operation, the extended arm of two-stage excavator often involves three main parameters: excavation height, excavation depth and working radius; The extended arm of three-stage demolition machine often involves three main parameters: lifting height, safe working height and working radius. Only comprehensive factors can determine the length of the excavator extension arm of this model.
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