Overhead cranes come in many different styles. One of the most popular styles is the gantry crane. These cranes are made up of two legs that are connected at the top by one or two girders, depending on the design of the crane. The crane itself has wheels on the bottom, meaning that it can be moved around and positioned over the top of any items that need to be lifted.
A hoist is attached to a special trolley that runs overhead along the entire length of the girder. Using the crane is as simple as moving it into position, attaching the hoist to the object that is being lifted, raising it up into the air, and moving it to a new location.
Popular Types Of Gantry Cranes
Gantry cranes ( grua portico ) come in quite a few different styles. When deciding on a crane, there are several factors to consider including the location where the crane will be used, the types of objects that it will lift, and the conditions under which it will operate. Some of the most popular gantry crane styles are listed below:
– Adjustable gantry cranes. As you might guess, these cranes can be adjusted, both in terms of their height and their width. This makes them a versatile choice for many different applications. The height of the crane and the distance between the legs can be adjusted to accommodate different lifting scenarios, providing a lot of versatility.
– Portable gantry cranes. These small gantry cranes are easy to move from one area to another, meaning that you can use them in a variety of different locations. The attached rubber wheels or casters make these cranes simple to move, which is why you can commonly find them in shops and warehouses. They are typically smaller than other styles of gantry cranes. Because of their small size, they also usually are relatively limited in terms of the amount of weight that they can lift.
– Single-girder gantry cranes. The legs on these cranes are connected by a single beam. The trolley is attached to this beam, enabling the operator to properly position it over the load. The overhead height of these cranes is somewhat low since the hoist hangs down underneath the beam.
– Double-girder gantry cranes (grua portal birriel). These cranes have two beams connecting the legs instead of a single beam. The trolley and hoist are mounted between the beams. Not only are double-girder cranes usually capable of lifting heavier loads than their single-girder counterparts but they also typically offer more headroom since the hoist doesn’t hang down as far.
– Rail-mounted gantry cranes. These cranes are commonly found in shipyards and on docks. They are equipped with steel wheels that allow them to run on tracks (pistas), much like a railroad car. Typically, they are capable of lifting and moving extremely heavy items that weigh multiple tons.
Hopefully, this look at some of the most popular types of gantry cranes that are out there will give you a better idea of the options that are available. When choosing a crane, look for one that is a good fit for your location and for the type of lifting that you plan on doing.