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 ?
The experiment was conducted in a laboratory using a work bench designed specially for bulldozing plates as shown in Fig.
Bulldozing Resistance Test of Polysiloxane/T8 Composite Coating
No'man Amro, the head of Doura Town Council, said the soldiers are bulldozing lands close to a local school for girls, in an area that is also overpopulated, adding that this tower would place the residents' lives at risk.
This struck me as odd because it is exactly what he said after the seething public outcry which followed the initial bulldozing raid two years ago.
Lahore, December 30, 2009 (Frontier Star): Governor Punjab, Salman Taseer lambasted the provincial government decision of bulldozing of shopping malls and plazas and termed it as an act to converting Lahore into graveyard.
ISLAMABAD, November 02, 2009 (Balochistan Times): The joint opposition Monday observed walkout from the proceedings of National Assembly against what they called against bulldozing NRO in National Assembly Standing Committee of Law & Justice.
Instead, the Government has spent over pounds 125 million it has no hope of ever recovering, on bulldozing yet another pillar of British industry
The ruling came just weeks after celebrities, community advocates and tree-climbing activists failed to stop the bulldozing of what was the largest urban garden in the nation.
Bulldozing through heavy brush can damage the blade-down limit switch that's mounted below the cab door.
The process was carried out with the usual hardship and injustice: the forcible removal of Arab families (some 1,200), expropriation of land and dwellings, and the bulldozing of olive trees with its destruction of their livelihoods.
In addition, the claim of bulldozing trails through this disputed acreage was not convincing since there was no evidence, such as maps or surveys, that showed the extent of this activity.
A few years ago, when the Baurs acquired a partly wooded tract of 100 acres for constructing Maryville Centre, they might have started as most developers do, by bulldozing off the vegetation to bare, erodible subsoil.