Tower cranes have always been one of the most common sights on any city skyline. Toronto is the North American city with the most cranes, and after a slight dip in 2020, we are beginning to see more cranes in our cities again.
From a distance, it might seem like all these huge, tall cranes are very similar. However, there are many different types of tower cranes, and each kind has a slightly different function. Read our tower cranes guide to find out more about these fascinating pieces of machinery.
Luffing Jib Tower Crane
These types of cranes are often used in urban spaces, where there is not enough clearance for the jib to fully rotate. This is due to the proximity of existing buildings.
The crane operator can lower or raise a luffing jib to swing the crane at a smaller radius, thus taking up less space. Unlike a conventional tower crane, it also does not use a trolley. There are many benefits to this type of tower crane. However, as it is a more complex piece of machinery, it is more expensive.
Self-Erecting Types of Tower Cranes
One of the most impressive tower crane types is the self-erecting crane. These structures can completely assemble themselves onsite without the need for a second crane to be involved in the assembly process.
There are clear advantages here in terms of equipment costs and also set-up time. Most self-erecting cranes are remote-controlled from the ground, although some do have an operator cab in the jib. These types of tower cranes are usually free-standing. This means that they can be moved around the job site.
A further benefit to these types of tower cranes is that they can work at multiple heights without the need for reconfiguration. This is because they feature a telescoping tower.
Hammerhead Crane
This is the most common type of crane configuration among types of tower cranes. The vertical tower and long horizontal jib are omnipresent on our city skylines these days. There is a counterweight at one end of the jib, while the other end extends over the work site horizontally.
The trolley can travel along the whole length of the jib, and this is the part that contains the lifting cable. This means that the crane can lift heavy loads anywhere within the radius of the jib.
There is a cab for the operator at the point where the jib meets the tower. These cranes need a second crane to assemble and disassemble them. It is usually possible to insert or remove sections from the tower to change the height of the crane.
Tower Crane Tips
If you are looking to buy a tower crane, it’s important that you choose one that is most suited to the needs of the specific site it will be operating on.
There are so many different types of tower cranes to choose from, but there are plenty more informative articles on the blog to help you make the right decision for your business.
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