How Does an Amphibious Excavator Work?
How Amphibious Excavators Work in Water and Wetlands
Although it might seem straightforward, many people wonder how amphibious excavators work and what they are best suited for. Amphibious excavators, as the name implies, have been designed to operate within wet areas where some serious mass-moving is needed. However, a wetland excavator is more than just a mechanical arm for leverage. We’ve put together some facts about the key components of wetland excavation equipment and how they impact its most common uses.
Amphibious Excavator Pontoons
The secret ingredient for getting an excavator into wet and swampy areas is a couple of pontoons. Wetland excavators can be equipped with different sizes of pontoons for extra buoyancy and stability in water. With more or larger pontoons, the wetland buggies are able to work in areas with greater water depths. Good pontoons will have integrated steps to allow operators easier access to the vehicle’s cabin. In addition, pontoons are coated with anti-skid surface coatings and reinforced strategically to prevent puncturing. All pontoons are purpose-built for each model of amphibious excavator’s undercarriage.
Amphibious Excavator Undercarriage
As these amphibious buggies have been designed to operate in areas with less-than-ideal load-bearing capabilities, their undercarriages have been built for low ground pressure and maximum buoyancy. Lower ground pressure means that the surface will also have minimal shifting and damage.
Dredging with an Amphibious Excavator
Waterways come in a variety of depths and forms, some being impractical or even downright impossible for conventional excavators to operate within. Amphibious excavators are designed with these terrain difficulties in mind in order to operate in environments several feet in depth. Expanded dredging is possible with the use of a hydraulic dredging pump that pumps silt from the area over a distance of up to 500 meters.
Wheeled Amphibious Vehicles as an Alternative
Amphibious excavators get their mobility from sealed pontoons and wide tracks. The pontoons provide buoyancy, the tracks spread the machine's weight, and together they let a heavy excavator work in water and saturated ground. That design is ideal for digging and dredging, but it also makes the machine large, slow, and difficult to move between sites.
Wheeled amphibious vehicles solve the mobility problem a different way. Instead of pontoons and tracks, they rely on oversized, low-pressure tires. Those tires keep ground pressure low on mud and marsh, provide buoyancy in open water, and propel the vehicle forward as they turn. The result is a much lighter machine that can drive straight from firm ground into a swamp, cross water, and keep going.
Because they are built for access and transport rather than excavation, wheeled amphibious vehicles often work alongside amphibious excavators instead of replacing them. They carry crews, tools, and supplies to remote sites while the excavator handles the heavy work. Explore the Fat Truck models and our case studies to see crew carrier and pickup-style options built for this kind of terrain.
Amphibious Excavation on Soft Ground
Amphibious excavators are well suited for work in areas where the ground is soft and unstable. This is because of their floatation system, which prevents them from getting bogged down in peat, sand, and other soft operating areas. This also makes them ideal for clearing lumber.
Riverbed Deepening and Shoreline Construction
River deltas often need regular de-silting and deepening to keep them flowing healthily. Marsh buggies are suitably designed to perform this series of river deepening work by hauling solid mass and removing excess silt to avoid flooding. With increasing weather changes across the nation, amphibious excavators protect against these rapid rises in water. Levees along riverways are able to be quickly constructed by using amphibious excavators with pontoons which allow them to keep working even in the wettest of conditions.
Buy the Best Amphibious Excavators for Sale Today
At Wetland Equipment, we have the most durable amphibious excavators for your needs. Customize your machine’s size, floatation, carrying capacity, dredging, and more with the help of our experienced crew that turns wetland excavation into a passion. Call or email us today to get started on finding your perfect machine for the toughest jobs!
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