一般情況下，挖掘機工作裝置部分包括動臂、斗桿、鏟斗以及相關的油缸和液壓管路。因挖掘機的工作裝置部分更換比較方便，所以可以根據不同的工作場合更換相應的工作裝置，以滿足各種工況的需要。例如整個工作裝置可以選用挖機加長臂(動臂、斗桿均加長，鏟斗容量減小)，這樣挖掘機的挖掘范圍增加了，挖機加長臂特別適合于一般河道的清淤；清淤時只需從河道兩邊的河灘上作業即可。工作強度大的礦山巖石挖掘需要選裝加強加厚的挖機加長臂以對付惡劣的工況，保證工程的順利完成?；蚝榭诠ぷ鞯臋C器有時要加裝吊鉤裝置以方便吊裝車輛。
Generally, the working device part of the excavator includes the boom, stick, bucket, and related cylinders and hydraulic lines. Because the working device of the excavator is easy to replace, the corresponding working device can be replaced according to different working conditions to meet the needs of various working conditions. For example, the whole working device can use the excavator lengthening arm (the boom and bucket rod are lengthened, and the bucket capacity is reduced), so that the excavation range of the excavator is increased, and the excavator lengthening arm is particularly suitable for the dredging of general rivers; The dredging can only be carried out from the beaches on both sides of the river. For rock excavation in mines with high working intensity, it is necessary to select and install thickened excavator lengthening arm to cope with bad working conditions and ensure the smooth completion of the project. Or the machine working at Hongkou sometimes needs to be equipped with a hook device to facilitate the lifting of vehicles.
產品應用：
Product application:
（1）基坑、陡坡挖掘的土方工程，河堤，坡面修整工程。
(1) Earthworks for excavation of foundation pit and steep slope, river embankment and slope finishing works.
（2）市政管網，埋管作業工程，修地鐵、挖隧道遠距離挖掘。
(2) Municipal pipe network, buried pipe work, subway construction, tunnel excavation and long-distance excavation.
（3）溝渠清淤，河道疏通，水電站尾水清淤，較深河道淤泥、碎石的清理。
(3) Dredging of ditches, dredging of river channels, dredging of tailwater of hydropower stations, and cleaning of sludge and gravel in deeper river channels.
（4）其他對深度、寬度、高度有特別要求的特殊工況。
(4) Other special working conditions with special requirements for depth, width and height.
購買須知：
Purchase instructions:

一、加長臂說明
1、 Description of extension arm
1、根據不同挖掘機型號制作長度為13-32米范圍
1. The length is 13-32 meters according to different excavator models
2、加長臂使用材質為Q420、Q550、Q690等高強度材料、抗拉度強
2. The material used for the extension arm is Q420, Q550, Q690 and other high-strength materials with high tensile strength
3、制作產品重量輕、結構強、使挖機的承受負何力達到小范圍
3. The product is light in weight and strong in structure, so that the bearing capacity of the excavator can reach a small range
4、開挖特殊工程作業好幫手、能完成挖機標準配置做不了的作業
4. It is a good helper for excavation of special works and can complete the work that cannot be done by the standard configuration of excavator
二、加長臂配置
2、 Extender configuration
20-25噸位挖掘機加長臂，可加長到16米，其配置為： 挖斗1個、鏟斗油缸1支、銷軸6支、 高壓軟管4條、黃油管3條、連桿總成1套、運輸連桿1套、加長大臂（8.5.米）、加長小臂（7.5米）。
The extended arm of 20-25 tonnage excavator can be extended to 16 meters. Its configuration is: 1 bucket, 1 bucket oil cylinder, 6 pin shafts, 4 high-pressure hoses, 3 grease pipes, 1 connecting rod assembly, 1 transport connecting rod, extended boom (8.5 meters), and extended jib (7.5 meters).
25-34噸位挖掘機加長臂，可加長到20米，其配置為：挖斗1個、鏟斗油缸1支、銷軸6支、 高壓軟管4條、黃油管3條、連桿總成1套、運輸連桿1套、加長大臂（11米）、加長小臂（9米）。
The extended arm of 25-34 tonnage excavator can be extended to 20 meters. Its configuration is: 1 bucket, 1 bucket cylinder, 6 pin shafts, 4 high-pressure hoses, 3 grease pipes, 1 connecting rod assembly, 1 transport connecting rod, 1 extended boom (11 meters), and 9 extended jib (9 meters).
35-40噸位挖掘機加長臂，可加長到22米，其配置為：挖斗1個、鏟斗油缸1支、銷軸6支、 高壓軟管4條、黃油管3條、連桿總成1套、運輸連桿1套、加長大臂（12米）、加長小臂（10米）
The extended arm of 35-40 tonnage excavator can be extended to 22 meters. Its configuration is: 1 bucket, 1 bucket cylinder, 6 pin shafts, 4 high-pressure hoses, 3 grease pipes, 1 connecting rod assembly, 1 transport connecting rod, 1 extended boom (12 meters), and 1 extended jib (10 meters)
40-50噸位挖掘機加長臂，可加長到26米，其配置為：挖斗1個、鏟斗油缸1支、銷軸6支、 高壓軟管4條、黃油管3條、連桿總成1套、運輸連桿1套、加長大臂（14米）、加長小臂（12米）。
The extended arm of 40-50 tonnage excavator can be extended to 26 meters. Its configuration is: 1 bucket, 1 bucket cylinder, 6 pin shafts, 4 high-pressure hoses, 3 grease pipes, 1 connecting rod assembly, 1 transport connecting rod, 1 extended boom (14 meters), and 12 extended jib (12 meters).
三、加長臂工藝
3、 Extender process
兩段式加長臂一般采用Q345B通用高強度鋼板制造，設計、模擬工作、排版下料、銑邊成型、拼裝焊接、管路清洗、質檢等工藝流程。
Two-stage extension arm is generally made of Q345B universal high-strength steel plate, and the process flow of design, simulation work, typesetting and blanking, edge milling and forming, assembly and welding, pipeline cleaning, quality inspection, etc.
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