In recent years, the use frequency of excavator lengthening arm is relatively high, especially in demolition and other aspects. But we need to consider several problems before installing and using the lengthening arm. First of all, what kind of excavator has the ability to install the extension arm, and the use range of the lengthening arm, and so on.
1、 What kind of excavator can be modified into an extended arm excavator
It is not recommended to refit the new machine, because the load of the excavator increases after refitting to an extended arm excavator. Moreover, it is easy to have after-sales service disputes with the original manufacturer before the warranty period. For machines below 50% new, modification is not recommended because the service life of the machine is relatively old, the performance of all aspects is reduced, and the lengthening arm itself has a certain weight, so it is difficult to give full play to the efficiency of the excavator The best is that 50-80% of new excavators are converted into extended arm excavators.
2、 Application range of excavator lengthening arm
There are two-stage excavator extension arm and three-stage excavator extension arm. The two-stage excavator extension arm is mainly used for earthwork foundation and deep cutting excavation, and river dredging; the three-stage excavator extension arm is mainly used for demolition of high-rise buildings. According to the lever principle and mechanics principle, the force of the extended arm excavator is less than that of the original one, so the construction should not be carried out in heavy operation.
3、 How to demolish the building with the extended arm of three section excavator?
It mainly depends on the height of the building. For example, demolishing a five storey building:
1. Some mud or industrial waste must be transported to the bottom to make the excavator lift straight and the impact hammer can reach the roof.
2. After the excavator opens the filler, make it stable and leave enough steering space.
3. Use the impact hammer to hit the wall vertically (about 1 meter away from the top), open a hole in the wall, and push the broken material inside. Don't let it fall and hit yourself.
4. Enlarge the hole and do not move the beams and columns. Open the brick wall and hit the column, so that the beam above can not support it will also fall inside, to ensure their own safety. In this order, from top to bottom, push in.
4、 How to choose the manufacturer of excavator lengthening arm
Because the price of the original excavator boom is too high, many owners can not afford it. Therefore, the excavator boom produced by the auxiliary factory has become the first choice of most excavator owners. At present, domestic manufacturers of excavator lengthening arm are mixed. Some small factories do not even have engineers. Only a few welders use cheap and substandard steel. The quality of the after-sales service can be imagined I know, so it is suggested that the excavator owners should be careful when choosing the manufacturer of excavator and long arm. Do not cause unnecessary loss to you for the sake of temporary cheap. It is suggested that you go to the factory for inspection when choosing. At present, domestic reputation and quality comparison manufacturers are concentrated in Dongguan, because Dongguan is a global manufacturing base, supporting facilities in all aspects are relatively perfect, and enterprises also pay more attention to quality.