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A twin engined Terex TS-14b scraper in Hudson, Ohio. In civil engineering, a wheel tractor-scraper (also known as a land scraper, land leveler or tournapull) is a type of heavy equipment used for earthmoving. It has a pan/hopper for loading and carrying material.
The Euclid Trucks was a manufacturer which specialized in heavy equipment for earthmoving, particularly dump trucks, loaders and wheel tractor-scrapers. It operated in the United States from the 1920s to the 1950s, when it was purchased by General Motors. The firm was later bought by Hitachi Construction Machinery. [1]
The blade is mainly intended for earthmoving and bulk material handling: pushing up sand, soil, and rubble. It also can be used to push other heavy equipment such as earthmoving scraper pans, and in military applications, main battle tanks. The dozer blade usually has three variants:
The Fresno scraper is a machine pulled by horses used for constructing canals and ditches in sandy soil. The design of the Fresno scraper forms the basis of most modern earthmoving scrapers , having the ability to scrape and move a quantity of soil, and also to discharge it at a controlled depth, thus quadrupling the volume which could be ...
The CA-1 would be used predominantly to tow graders and pan scrapers. This style of construction was fast and relatively efficient which gave the United States a reasonable strategic advantage in the Pacific campaign of World War 2 due to the island hopping tactic that required many new airfields.
The Terex THS15 Motorscraper was a concept machine scraper displayed for the first time at Minexpo 2000.This machine features some unusual design concepts, including an adjustable cutting edge on the bowl to reduce friction when loading.
Sometimes, a bulldozer is used to push or pull another piece of earth-moving equipment known as a "scraper" to increase productivity. The towed Fresno Scraper, invented in 1883 by James Porteous, was the first design to enable this to be done economically, removing the soil from an area being cut and depositing where needed as fill. Dozer ...
A heavy equipment operator drives and operates heavy equipment used in engineering and construction projects. [7] [8] Typically only skilled workers may operate heavy equipment, and there is specialized training for learning to use heavy equipment. Much publication about heavy equipment operators focuses on improving safety for such workers.