Tower cranes or tower cranes are fixed and common equipment in large construction sites. They often lift objects hundreds of meters and can transport them over long distances. Construction users use tower cranes to lift steel, concrete, large tools such as generators and acetylene torches, and various types of other construction materials.
Crane Tower Parts
All tower cranes have the same basic parts:
The base is a large concrete slab to which the mast is bolted to support it.
The base to the mast (or tower ) is connected, which determines the height of the tower crane.
The mast is connected from above to the slewing unit, which is the part with the motor and the gear that allows the crane to rotate:
< br>The slewing unit has three parts:
It is a long horizontal arm or working arm which is the part of the crane that carries the load. A trolley moves along the length of the arm and moves the load to or from the center of the crane.
A shorter horizontal machine arm that has crane motors and electronics as well as large concrete counterweights.
User's cabin: The machine arm consists of a motor that lifts the load and electronically controls it to move it and has a cable that: The motors that drive the slewing unit are located on top of the large gear. .
So now you understand how this equipment lifts the load.
Tower Crane How much can?
Typically, a tower crane has the following characteristics: Maximum unsupported height - 265 feet (80 meters) The crane has an overall height greater than 265 feet if a building reaches the height of the crane.
Maximum reach – 230 feet (70 meters)
Balance weights – 20 tons (16.3 tons)
The maximum load a crane can lift is 18 tons, but this crane cannot put a very heavy one at the end of the arm and lift it. Crane, the load that is closer to the center of the mast can have more weight and its transfer is also safer. For example, if the user places the load within 30 meters of the mast, the crane can lift a maximum of 10 tons. Do not lift.
The maximum load switch monitors the pressure applied to the cable and ensures that the load does not exceed 18 tons. The momentary load switch ensures the user that the load on the crane does not increase when the load moves along the arm.