How does the excavator go up to the roof of top,how does the excavator work?

How does the excavator go up to the roof of top
The purpose of the excavator going up to the roof is to demolish the building. There is nothing to be surprised. In some cases, directional blasting is not allowed for high-rise buildings, and manual demolition is time-consuming and laborious. At this time, the excavator can be used for demolition. There are many ways for the excavators to get to the top of the building. It can climb up from the ruins of the demolition site behind the building or climb to the top of the building through the manually rotating stairs.,Or even use a large crane or a rolling machine to lift it.
The most normal way for excavators to go up to the roof is to use a high-powered elevator or a rolling machine to directly lift it up. If use the rolling machine, first of all,a weight of about 5 tons of rolling machine was tooken to the roof by workers along the stairs, . then fix the coiler to the roof edge. Finally, the crane rod is extended, the steel rope is lowered, and the excavator with a weight of 22 tons is tied to it,then it is slowly lifted up to the roof through the coiler.
When the floor is not very high, the excavator can use its own strength to climb up to the top of the building. First, excavators should start working from the first floor and pad the excavated waste cement and steel bars under it,and walk along the building in rotation. Remember not to excavate all of them, and leave the columns to avoid collapse. This method will not be used in general because of it is dangerous.
There is also a special way that can let the excavator climb to the roof. In some high-rise buildings, the frame of each floor can make a "井" structure. The workers can use the overall cutting machine to cut the three sides of the "井" shape, and then use the oxygen cutting machine to cut the three sides, so that the three sides fall down slowly and form a slope with the bottom layer. In this way, a platform is built, and the excavator can climb up the platform layer by layer. In other words, after cutting the three sides of "井" structure in the second layer, the overall structure falls to the first layer, and forms a slope with the first layer. In order to ensure that the formed slope can bear the weight of the excavator, the workers must reinforce the slope and pad with a layer of shockproof material.

How does the excavator work on the roof.
After the excavator goes upstairs, the track chain should keep moving on the load-bearing beam to avoid direct pressure on the roof. The advantage of 360 degree rotation of the excavator chassis can be used to implement the demolition. In general, two additional workers needs to be  equipped for each excavator to do assist.. When the roof is broken and demolished, the excavator driver first uses the oil hammer to drill the wall panel on the roof, and the assist workers cut off the steel bars that cannot be handled by the oil hammer with a gas cutter. Finally, the excavator is replaced with a bucket, which is normally referred to as "digger", to deal with the broken bricks and stones. The bricks and stones dug out by excavators are generally thrown into the elevator shaft, which is more convenient.

Which should be pay attention to dring the excavator working

1、The premise condition of this kind of construction is to make sure that the building can bear the weight of excavator after careful design and load calculation.
2、The safest way is to lift it up with a movable crane. A large movable crane can lift 1200 tons. so, there is no problem to lift it to the roof.