bulldozer

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bulldozer

a powerful tractor fitted with caterpillar tracks and a blade at the front, used for moving earth, rocks, etc.

Bulldozer

 

A self-propelled earth-moving machine consisting of a caterpillar or wheeled tractor or similar machine with an attached operating member—a curved blade (plate) located outside the base of the machine’s undercarriage. It is utilized for layered digging, leveling, and shifting (for distances of 60-150 m) of earth, minerals, road-construction materials, and other materials for building and repairing roads, canals, and hydraulic-engineering and similar works.

There are several types of bulldozers: those with a fixed blade mounted perpendicular to the longitudinal axis of the basic machine; those with a swiveling blade that can be set at an angle in the horizontal plane on either side of the machine’s longitudinal axis or at right angles to it; and those of the universal type, with a blade having two hinged, articulated halves that can be set in the horizontal plane at various angles to the machine’s longitudinal axis or perpendicular to it (track-layer). The blades of all types are equipped with mechanisms with hydraulic, cable, or electromechanical drives for raising and lowering, swiveling in a plane, tilting in a transverse plane, and inclining forward or backward in the direction of the vehicle’s motion. Bulldozers are supplied with interchangeable equipment (scarifier tines, graders, spreaders, stub-wings, and so on) that broaden their usefulness and increase their efficiency for specific jobs.

(2) A bending press for hot or cold machine bending in dies of parts (such as clamps, brackets, and angles) from blanks having various cross sections. The presses are two basic types: crank-operated and hydraulically operated. The bull-dozers most commonly used in forging and stamping production are of the level crank-operated type, with a force of 0.2-5 meganewtons (MN; 20-500 ton-forces) and a rate of 6-20 strokes per minute. High-speed bulldozers with a force of 0.2 MN (20 ton-forces) and a rate of 45-60 strokes per minute are used for the hot bending of blanks with small cross sections.

bulldozer

[′bu̇l‚dōz·ər]
(mechanical engineering)
A wheeled or crawler tractor equipped with a reinforced, curved steel plate mounted in front, perpendicular to the ground, for pushing excavated materials.
(metallurgy)
A machine for bending, forging, and punching narrow plates and bars, in which a ram is pushed along a horizontal path by a pair of cranks that are linked to two bullwheels with eccentric pins.

bulldozer

bulldozer
A tractor or other prime mover equipped with a blade attached by arms or brackets to its front end; used in pushing or piling earth or rock.
References in periodicals archive ?
It can be used as an educational institute, university, or art gallery." Imran in one of his rallies had vowed to bulldoze Governor House whenever he comes into power.
"Magiging polisiya na ito na talagang ipapa-bulldozer na lang iyong mga (It will now become policy to bulldoze) smuggled luxury vehicles," he added.
According to latest reports, a large number of residents had gathered around bulldozers and were protesting against the administration, pelting stones at police and Rangers personnel.A Geo News correspondent said some women had also come out to protest on the roofs of their houses with the Holy Quran in their hands, saying they would not back down and let the administration bulldoze their homes.
Middlesbrough Council has signed up to 'One Planet Living' and yet want to bulldoze a natural woodland.
How the Haltwhistle Partnership's deeply flawed plans to bulldoze the hall and build a new building on its site, in the main street of our attractive and historic market town, ever got as far as they did without anyone consulting Tynedale Council's senior conservation officer is something which Canon Best would perhaps like to explain.
"We are really worried that the owner of the land, where Eskharah starts from, would bulldoze it with or without informing the authorities concerned since it is his property," he said.
Now under development are courses atop landfills, courses designed to purify waste water from nearby sewage treatment plants and, most common, courses that enhance their natural environment rather than bulldoze it, then keep the grounds in check with the preventative Integrated Pest Management system, which involves careful native plant selection and water management to replace wall-to-wall sprays of pesticides.
At Bosque del Apache National Wildlife Refuge in New Mexico, preserve officials bulldoze or burn thickets in late summer, then flood the area with water from the Rio Grande.
ISLAMABAD, October 27, 2009 (Balochistan Times): Senate standing committee on fianc and economic affairs has expressed displeasure over non participation by the finance minister Shaukat Tareen in its meeting convened to review the proposed amendment in banking companies ordinance and announced privilege motion will be tabled against him if he tries to bulldoze committee in future.
By Cara Simpson WE'RE GOING TO BULLDOZE YOUR HOME: COUNCIL SHOCKS OLGA, 76 A PENSIONER was stunned when she was told the home she'd lived in all her life was going to be bulldozed.
Middlesbrough Council is putting on a climate change conference because they are a beacon status council for climate change, yet they go out and bulldoze people's woodland, which was a beautiful family woodland."