Gail Cooper Excavator February 05th, 2018 - 12:54:18
An excavator can either be mounted on wheels or on tracks. These are used to facilitate for its mobility and are used in different environments. Track hoes are the type of excavators that are mounted on tracks. Excavators are not only used in construction industries but can also be used in the mining industry and also for lifting heavy loads. Other common uses of excavators include; river dredging demolition landscaping and also material handling. Excavators come in different types and sizes depending on the different jobs they can be employed on. Small excavators are commonly called mini or compact excavators and often come equipped with a bulldozer blade at the front. The smallest type of mini excavators is capable of fitting through a doorway. In contrast the largest type of excavators can weigh an amazing 180000 lbs. Compact excavators can be found in 2 distinct types namely the tail swing and zero tail swing models. Conventionally all compact excavators were tail swing models and had an attached rear counterweight to prevent them from tipping while digging.
In construction especially of large infrastructures an excavator is operated to assist in demolition general grading landscaping and in lifting and placing heavy objects such as pipes. Excavators also aid in mining river dredging and driving piles. A Compact hydraulic excavator or mini excavator has tracks or wheels and weighs approximately 0.7 to 7.5 tons. Caterpillar the worlds largest manufacturer of construction equipments has a compact or mini excavator that weighs only 1610 kilogram or 3549 pounds and operates on a power of 19 hp. The mini excavator by and large consists of a standard backfill blade with independent boom swing. It is different from other heavy equipment in such a way that a transfer of hydraulic fluid in hydraulic cylinders is responsible for all the movements and functions of this machine particularly its work group and blade. The compact excavators rotation and travel functions are as well activated by the hydraulic fluid-powered motors.
Back Hoe For excavation purposes construction engineers make use of back hoes which are the most common types of excavators used today. This excavator has a bucket attached to the front which is facing the driver. This position of the bucket allows the driver to have a clearer idea of the excavation. Back hoe excavators are part of almost every construction site and due to their incredible ability to dig through soil they help improve productivity and save costs. The cab of this machine can swiftly rotate to 360 degrees making it easier for the driver to transport the debris to the dumping zone. Back hoes are also used for clearing snow covered roads and to clear blockages.
Moving on the to the possible non-NASA commercial application it can be said that the same qualities of the LPE that apply to space would also attract terrestrial users or said differently us earth bound creatures. As both business and government markets rapidly expand so does the need for urban infrastructure. Using NASAs own words on the subject; Urban construction settings restrict the use of explosives to minimize damaging vibrations making mechanical methods attractive. In addition shallow tunnel construction is rapidly changing from cut-and-cover to wholly underground because excavations disrupt city traffic. Coupled with increasing population these factors enhance the market for innovatively flexible systems such as the LPE. If I could have said it better than NASA did I would have. But I couldnt so I didnt. Anyway there you have it both the past of excavators and a look at their future with the development of the Low-energy Planetary Excavator