Heavy equipment refers to heavy-duty vehicles, specially designed for executing construction tasks, most frequently ones involving earthwork operations.
They are also known as heavy machines, heavy trucks, construction equipment, engineering equipment, heavy vehicles, or heavy hydraulics. They usually comprise five equipment systems: implement, traction, structure, power train, control, and information.
Heavy equipment functions through the mechanical advantage of a simple machine, the ratio between input force applied and the force exerted is multiplied. Some equipment uses hydraulic drives as a primary source of motion.
There is not doubt that the construction industry possesses the honor of having some of the largest machinery and tools. They are powerful. They are gigantic. And they are awesome.
The use of heavy equipment has a long history; the ancient Roman engineer Vitruvius (1st century BCE) gave descriptions of heavy equipment and cranes in ancient Rome in his treatise De architectura. The pile driver was invented around 1500. The first tunneling shield was patented by Marc Isambard Brunel in 1818.
Heavy equipment requires specialized tires for various construction applications. While many types of equipment have continuous tracks applicable to more severe service requirements, tires are used where greater speed or mobility is required.
An understanding of what equipment will be used for during the life of the tires is required for proper selection. Tire selection can have a significant impact on production and unit cost. There are three types of off-the-road tires, transport for earthmoving machines, work for slow moving earth moving machines, and load and carry for transporting as well as digging.
Off-highway tires have six categories of service C compactor, E earthmover, G grader, L loader, LS log-skidder and ML mining and logging. Within this service, categories are various tread types designed for use on the hard-packed surface, soft surface and rock. Tires are a large expense on any construction project, careful consideration should be given to prevent excessive wear or damage.
There is no doubt that the construction industry possesses the honor of having some of the largest machinery and tools. They are powerful. So, we are here with the list of top 10 largest construction machines from all around the world. Have a look at these fantastic beasts.
Komatsu D575A Dozer
The Komatsu D575A is a 1,150 horsepower (860 kW) tractor crawler available as a bulldozer/ripper, the D575A-3, or as a dedicated bulldozer, the D575A-3 SD Super Dozer. Equipped with a standard blade, both versions are capable of moving 90 cubic yards (69 m3) of material per pass although the D575A-3 SD Super Dozer is capable of moving 125 cubic yards (96 m3) of material per pass if equipped with an optional blade. The D575A-3 can dig to a maximum depth of 6 feet 9 inches (2.06 m) using its single shank ripper.
Currently the largest bulldozer in production, the D575A has been produced by Komatsu Ltd. in Osaka, Japan since 1991. Surface mine operators in the United States, Canada and Australia are the primary users of the D575A, although it is sometimes used in heavy construction applications.
One of the Largest Construction Machines D575A is primarily used in surface mines in West Virginia, mostly operating on Alpha Natural Resources sites in Appalachia. To date, 17 D575A’s are in service in the West Virginia Coal Fields. There is one super ripper that operates in Las Vegas, and another 2 operating on New Zealand’s South Island in the Stockton mine.