Excavator Grapple

We can manufacture Three-plus Long Arm for different types of excavator, any enquiry please do not hesitate to contact us! 

 

 

Outline 

 

The increasing complexity of construction projects to promote the continuous development of the excavator front end device. Three-plus long arm excavator assembly adapted demolition machines, excavators can be converted into small arm curved arm, coal unloading machines, hammer machine, wood machine,  grasping steel machine and so on. These modified devices greatly improve the function and purpose of the excavator itself, making the excavator to better meet the needs of a modern civil engineering construction. 
Three-plus long arm is also known as excavator three sections' arm , belonging to one serie of long arm of the excavator, mainly used in high-rise building demolition and other projects, so people also often called three-plus long arm for "demolition arm".

 

 

Basic structure 

Excavators three-plus long arm structure is divided into a large arm in arm, forearm three parts. And with only a two-stage extension boom arm and forearm. Excavator according to the size of its own weight, the length of the long arm of the structure were added to the excavator design. We usually common three-arm excavator total length from 20 meters to 28 between corresponding excavators weighing between 35T ~ 55T. 

 

 

Buying Guide

 
Three-plus long arm requiring manufacturers with 11 pins and 20 hose in the purchase process. 

 

 

Production process

1, according to user requirements, professional cartographers will be on design software to design a user working conditions applicable to the long arm of the excavator plus detailed data sheet. 

2, through the gantry CNC plasma cutting machine cutting. 

3, after a large boring machines, lathes, presses, bending machine, and other advanced machining equipment and skilled welders synchronization job. 

4, hydraulic pipe extension arm excavator demolition machine configured using acid phosphate treatment to ensure a clean piping. 

5, the last extension boom excavator demolition machine polished appearance, sandblasting, scraping putty, spray original paint. 

 

Three-plus long arm Market Situation

Progress in China's excavator began to go in the late 20th century, 70 times, domestic production plus the long arm excavator company from scratch, has more than 100 large nationwide rise of small size plus the long arm excavator production company, with an annual output of a hundred of the speed to market. Although the market outlook is satisfactory, but because of the production management system to monitor the long arm of the excavator plus non-standard parts is not particularly perfect, some makers of counterfeit assembled, cut corners, so the formation of a long arm excavator market situation ichthyosaur mixed doping . 

 

 

Three-plus long arm demolition job

 

Take 5-story building for example:

 

1. You must be shipped to the bottom of some mud or industrial waste, excavator hammer can be obtained liter straight roof. 

2. After opening the excavator to be the first to make it stable filler, and allow sufficient turning space. 

3. Use a hammer hit the wall to the inside vertical wall (about one meter from the top), open a hole in the wall, particle push in, do not let it fall to hit himself. 

4. The hole expanded, first not moving beam and pillars. After opening hit the brick pillars, so the beam could not support the above will fill it out, to ensure their own safety.

 

 

Structure pictures:

 

 

Excavator Weight (T)	A (M)	B (M)	C (M)	D (M)	E (M)	Arm Weight (T)
12 - 15	13.5	2.0	8.0	6.5	5.3	0.8
16 - 18	15.0	2.3	8.5	6.8	6.0	0.9
20 - 22	17.0	2.5	9.2	7.8	6.5	1.2
25 - 28	18.5	2.7	9.8	8.2	6.8	1.5
30 - 35	21.0	3.0	10.5	8.8	7.3	2.0
40 - 50	25.0	3.5	13.5	14.8	13.0	2.5

Note: the above data are for reference only, accurate data will be subject to actual situation.

 

 

Komatsu reference data:

 

Models   Parameters	PC120-6	PC200LC-6	PC200LC-6	PC300LC-6	PC350LC-6	PC400LC-6	PC450LC-6
Total Length for 3 segments (mm)	12000	14000	16000	8000	20000	22000	24000
(kg)weight	3000	4500	5000	6000	7000	8000	9000
Limitation for weight of shear (kg)	Under 800	Under 1500	Under 2000	Under 2000	Under 2000	3420	Under 2000
Overall Height (mm)	3000	3100	3160	3290	3290	24000	3420
working height (mm)	12500	15600	17800	20000	22000	21600	26000
Additional counterweight(kg)	1000	2000	2500	3000	4000	5000	6000
Overall Height (mm)	2900	2980	3040	3210	3210	3400	3400

 

 

Our three-plus long arm is suitable for all famous brands as below:

 

 

 

Product Image:

 

 

We can produce the long arm as per your requirement and your draft, for any details please contact us asap, thanks!