挖掘机加长臂顾名思义，挖机在处理某些工况的时候，挖掘机长度不够，需要加长，类似我们手机自拍，由于手臂不够长，我们需要自拍杆加长，这样才能拍摄。挖掘机加长臂：通过的电脑辅助设计系统，各类加工设备，熟练员工技能和实际应用知识和经验，从应力分析、材质选择、技术和工艺、设计制作等方面保证了挖掘机加长大小臂的结构强度、使用性能和质量。挖掘机加长臂内安装有内部缓冲板以承受张力负载，延长了挖掘机加长大小臂、挖掘机加长臂的使用寿命。下面我们就来看看长臂挖掘机出租需要注意的事项。

As the name suggests, when the excavator is handling certain working conditions, the length of the excavator is not enough and needs to be extended. Similar to our mobile phone selfie, because the arm is not long enough, we need to extend the selfie rod in order to take photos. Excavator arm extension: Through advanced computer-aided design systems, various processing equipment, proficient employee skills and practical application knowledge and experience, the structural strength, performance, and quality of excavator arm extension are ensured from stress analysis, material selection, technology and process, design and production, etc. The excavator's extended arm is equipped with an internal buffer plate to withstand tension loads, extending the service life of the excavator's extended forearm and extended arm. Let's take a look at the precautions to be taken when renting a long arm excavator.

一.挖掘机加长臂分类

1、 Classification of excavator extended arm

挖掘机加长臂有两段式挖掘机加长臂和三段式挖掘机加长臂，两段式挖掘机加长臂主要适用于土石方基础和深堑挖掘作业，河道清淤;三段式挖掘机加长臂主要适用于高层建筑的拆卸等工程。根据杠杆原理和力学原理，华体会国际 的受力比原来减少，应该尽量不要去重作业的场合施工。挖掘机原装设备参数是设定好的，如果贸然加长 加重，必然需要增加配重，否则的由于受力不均，对设备产生损害。

There are two types of excavator extension arms: two-stage excavator extension arms and three-stage excavator extension arms. The two-stage excavator extension arms are mainly suitable for earthwork foundations and deep excavation operations, as well as river dredging; The three-stage excavator with extended arm is mainly suitable for dismantling and other engineering projects of high-rise buildings. According to the principles of leverage and mechanics, the force on an extended arm excavator is reduced compared to before, and construction should be avoided in heavy work environments as much as possible. The original equipment parameters of the excavator are set. If it is rashly lengthened or heavier, it is necessary to increase the counterweight. Otherwise, due to uneven force distribution, the equipment will be damaged.

二. 在使用超长臂作业装置进行作业时要特别注意以下几点：

II Special attention should be paid to the following points when using an ultra long arm operating device:

1)未经允许，严禁私自改动挖掘机工作装置和其它结构、机构，这样可能会造成工作装置和其它结构、机构损坏及出现各类问题。

1) Without permission, it is strictly prohibited to modify the working device and other structures and mechanisms of the excavator without permission, as this may cause damage to the working device and other structures and mechanisms, as well as various problems.

2)严禁横向操作用于刮土及拖拉其它物料。

2) Horizontal operation is strictly prohibited for scraping soil and dragging other materials.

3)严禁用于起吊或拖拉重物(含使用运输状态下的撑杆固定孔进行起吊)。

3) It is strictly prohibited to use it for lifting or dragging heavy objects (including using the fixing holes of the support rods during transportation for lifting).

4)当用户不小心将整机履带陷入泥泞的稀泥地或坑中时，严禁用工作装置(铲斗、斗杆、动臂等)作为支撑进行自救，这样会造成结构件的损坏。只能用拖车拖动整机或者用起重机将整机吊离现场

4) When the user accidentally plunges the entire machine's tracks into muddy and muddy ground or pits, it is strictly prohibited to use working devices (such as buckets, dippers, boom arms, etc.) as support for self rescue, as this may cause damage to structural components. The entire machine can only be towed by a trailer or lifted off the site by a crane