how do they assemble tower cranes

Tower cranes are large machines that are commonly used in construction sites to lift and move heavy objects. They are essential in the construction industry as they help to make the work easier and faster. However, have you ever thought about how these tower cranes are assembled? In this article, we will explore the process of assembling a tower crane.

Pre-assembly

The first step in assembling a tower crane is the pre-assembly. During this stage, the different components of the crane are fabricated and transported to the construction site. The most critical components of the tower crane are the base, the mast, and the slewing unit. These components are assembled on the ground before they are lifted to their final position. The pre-assembly stage helps to ensure that all the components are in good condition and that they are ready for installation.

Base Installation

The second stage of tower crane assembly is the installation of the base. The base is the foundation on which the entire crane is built. The base is either fixed to the ground or mounted on a chassis, depending on the intended use of the crane. The base is made up of several parts, including the anchor bolts, the base plates, and the counterweights. The base of the tower crane must be level and secure to ensure stability during operation. Once the base is installed, the mast can be lifted into position.

Mast Installation

The third stage in assembling a tower crane is the installation of the mast. The mast is the vertical part of the crane that supports the jib and the slewing unit. The mast is usually installed in sections, starting from the bottom. Each section is bolted to the previous one until the full height is reached. The size and weight of the mast depend on the height of the tower crane. The mast must be secured to the base and must be vertical to ensure stability during operation.

Jib and Slewing Unit Installation

The fourth and final stage of assembling a tower crane involves the installation of the jib and the slewing unit. The jib is the horizontal arm that extends from the top of the mast, while the slewing unit is the part that allows the jib to rotate. The jib is installed by attaching it to the top of the mast and securing it with bolts. Once the jib is in place, the slewing unit can be installed, which enables the jib to rotate. The final step is to connect the hoist lines and the controls to the crane. The tower crane is now ready for operation.

Conclusion

In conclusion, assembling a tower crane involves several stages, including pre-assembly, base installation, mast installation, and jib and slewing unit installation. Each stage requires precision and accuracy to ensure that the crane is stable and safe during operation. The process of assembling a tower crane can take several days, depending on the height of the crane and the complexity of the construction site. Nonetheless, the assembly process is crucial in ensuring that the tower crane operates efficiently and safely in the construction site.