Bases Fixing Angles For L48A1 Mast

Products Specification

Type , Model: Bases Fixing Angles For L48A1 Mast

Size: 1.6M

Use for : L48A1, L48A3 mast section , P20A P20E, R20A, R20E

R16E , 1.6m L type mast

Materials: Q345B

Process: Blasting derusting, 

Painting:  Under painting , Middle painting, Surface painting.

Our factory produce and supply almost all famous brand tower crane :Mast section, Anchor Frame, Fixing angle ,Adaptor and so on as good quality and price.

Bases Fixing Angles For L48A1 Mast

Tower Crane Knowledge sharing：

Is the tower crane more than 300 meters high safe? Will the wind blow over

Basically every construction site has the figure of a tower crane, as tall as the tower crane. So, can you imagine how the 300-meter tower crane is installed and works? Is the tower crane more than 300 meters high safe? Will the wind blow over

Now, we pass shenyang current highest mark building -- MAO ye center, tower crane of 300 many meters of tall of main tower, know how it is to install, work, disassemble, assure safety

How does a tower crane "climb" high

Tower cranes are divided into internal climbing tower cranes, independent tower cranes, external attached tower cranes and central tower cranes.

The tower crane used in the main tower of maoye center is an internal climbing tower crane, which is the most expensive, with a value of 5 million yuan and the largest carrying capacity, generally ranging from 10 to 12 tons.

Bases Fixing Angles For L48A1 Mast

Although the building is as high as 300 meters, but the inner climbing tower crane is only 42 meters, the original name of the inner climbing tower crane is really like its "crawling" in the center of the building to achieve height.

The inner climbing tower crane has been installed in the center of the main building when the foundation is being built. By means of hydraulic lifting, the steel beam is fixed in three circles around it to realize lifting.

Each standard section of the tower crane is 6 meters, and the height of each climb is 9 to 12 meters. There are 3 rings of steel structure girders around the tower crane, each ring is about 10 meters apart.

The tower crane "sits" on the lowest steel beam of the three-ring steel girder. Every time it needs to climb, the heavy body of the tower crane is lifted to the position of the middle steel beam by the hydraulic pump, and then the bottom of the tower crane is fixed with the middle steel beam.

Bases Fixing Angles For L48A1 Mast

After fixing, the bottom ring of steel girder is completely liberated, and then the last ring of steel girder is lifted to the top as the first ring of steel girder. In the same way, the tower crane "crawls" slowly to the desired position at a very slow speed. The "height" of other independent tower cranes, external attached tower cranes and central tower cranes is the same as that of buildings.

They are connected with each other in the form of pin shaft. For each building of a certain height, the steel structure part of a tower crane is lengthened.

Tower crane disassembly

So how do you take down a giant tower crane? In order to dismantle the main tower crane of the tower crane, it is necessary to lift one or two roof cranes to the top floor before the demolition.

Then lift the large tower crane to the ground by parts after disassembly by these two roof supported roof cranes.

Bases Fixing Angles For L48A1 Mast

After the removal of the large tower crane, the smaller roof crane will be the larger roof crane lifted to the ground. Finally, a smaller roof crane is hoisted by the remaining roof crane, which then disassembles the original roof crane and lifts it to the ground.

The last of the smallest roofing cranes can be removed manually by a builder, who then lifts it to the ground.

How to ensure the safety of tower crane

Tower crane is broken there are two kinds of circumstances, one is the damage of electrical, such as sudden stop operation and other circumstances, generally encounter this kind of situation is responsible for maintenance by professional electrical engineers.

In the other case, the steel structure of the tower crane is damaged, the probability of which is almost zero, because the steel structure of the tower crane has an insurance coefficient when leaving the factory.

Generally, the insurance coefficient is greater than the bearing number marked, so it will not be broken because of the carrying capacity.

More than 300 meters high tower crane, the wind can blow down

There are a lot of safety indicators to control and operate the tower crane, the whole tower crane with more than 10 limit device, limit the index parameters in the specified range.

These limiters can control the rotation Angle, speed and lifting weight of the tower crane basket. Just as the electric power in the room will automatically alarm when the standard load value is exceeded, the tower crane will also give an alarm and stop working after the lifting weight is exceeded.

Bases Fixing Angles For L48A1 Mast

By communicating with the captain of the tower crane on the intercom, the weight can be accurately stopped on the specified ground within half a meter. The top of the tower crane is also equipped with a special anemometer, which can measure the wind speed from time to time.