Vacuum excavators, also known as vacuum haulers or vacuum excavators, machines used in the construction industry for removing unwanted material from a work site, usually in the underground environment. Essentially a vacuum excavator is a construction tool that functions by using suction to draw debris out of an excavation, usually underground. A vacuum excavator by Haaker Underground Equipment is commonly used for pre-construction tasks, including those related to earthwork and engineering design. They are sometimes used on construction jobs to remove soil, sand and rocks from the area to be worked. Other uses include prepping the land for plantings and landscaping projects, clearing an underground minefield, digging ditches for gas or water lines, grading roads and operate a trencher, or bulldozer.
There are two types of vacuum excavators: the bucket type and the electric cable machines. Bucket type excavators are self-propelled and have a bucket on the front to reach the upper ground and the hinged front to pull the soil or debris out. The cable machines are supported by tracks on both sides and are driven by electric motors with the option of either independent or coupled controls. Most have a limited capacity and may use a hydraulic clutch to assist in stop and slow down when the momentum gained is not enough to move the truck. See this page: https://www.dictionary.com/browse/excavator,
A positive displacement blower vacuum excavator is another type that digresses through soil by creating a three-dimensional vacuum and redirects the suction air to a remote location. A positive displacement blower has a separate fan system for fan blades and a vacuum source and uses hydraulics to propel itself forward. Positive displacement blowers are frequently used in mining applications.
A third type is the high-pressure water vacuum excavator that functions more like a bulldozer. It can clear the difficult terrain such as stairs, ditches, lily pads, and can tunnel through earth like a giant hole. High-pressure water excavators also have an optional negative displacement tank to store water to be pumped back later. This tank is very large and is located above the cab so that it can be reached quickly if the machine needs water. The negative displacement tank is also used as an emergency back up to maintain vacuum pressure in times of emergency such as when a hose has been cut or a vacuum motor has seized.
Other types include hydro excavator, which can dig shallow ponds, ditches, and can function as a water jet lance. Hydro excavators run on a gasoline engine with the power derived from compressed air. These excavators are much more expensive than other types but are capable of digging even trenches wider than those of high-pressure water excavators. Hydraulic excavator is capable of working in larger areas and is the most common variety used today. Read on to learn more!
In order to get these excavators to work properly, proper maintenance is a must. All vacuum excavation trucks should be checked and serviced by a qualified technician once every year to perform routine service checks. In addition, the owner should keep the suction excavator registered and should change the filter and oil at least once every three months. When these are done, then it is a good time to buy new products to add to the arsenal of vac trucks.
