挖掘機加長臂顧名思義，挖機在處理某些工況的時候，挖掘機長度不夠，需要加長，類似我們手機自拍，由于手臂不夠長，我們需要自拍桿加長，這樣才能拍攝。挖掘機加長臂：通過的電腦輔助設計系統，各類加工設備，熟練員工技能和實際應用知識和經驗，從應力分析、材質選擇、技術和工藝、設計制作等方面保證了挖掘機加長大小臂的結構強度、使用性能和質量。挖掘機加長臂內安裝有內部緩沖板以承受張力負載，延長了挖掘機加長大小臂、挖掘機加長臂的使用壽命。下面我們就來看看長臂挖掘機出租需要注意的事項。

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.挖掘機加長臂分類

1、 Classification of excavator extended arm

挖掘機加長臂有兩段式挖掘機加長臂和三段式挖掘機加長臂，兩段式挖掘機加長臂主要適用于土石方基礎和深塹挖掘作業，河道清淤;三段式挖掘機加長臂主要適用于高層建筑的拆卸等工程。根據杠桿原理和力學原理，加長臂挖掘機的受力比原來減少，應該盡量不要去重作業的場合施工。挖掘機原裝設備參數是設定好的，如果貿然加長 加重，必然需要增加配重，否則的由于受力不均，對設備產生損害。

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. 在使用超長臂作業裝置進行作業時要特別注意以下幾點：

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

1)未經允許，嚴禁私自改動挖掘機工作裝置和其它結構、機構，這樣可能會造成工作裝置和其它結構、機構損壞及出現各類問題。

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)嚴禁橫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)嚴禁用于起吊或拖拉重物(含使用運輸狀態下的撐桿固定孔進行起吊)。

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)當用戶不小心將整機履帶陷入泥濘的稀泥地或坑中時，嚴禁用工作裝置(鏟斗、斗桿、動臂等)作為支撐進行自救，這樣會造成結構件的損壞。只能用拖車拖動整機或者用起重機將整機吊離現場

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