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 ?
Mr Hamilton said: "Part of the garden and shrubs had been bulldozed.
If I'm not mistaken parang (I think it's around) 70 [cars] but don't take that as gospel truth," Roque said today when asked about the number of cars which will be bulldozed on Tuesday.
Israeli Occupation Forces (IOF) on Monday morning have demolished a residential building and the walls surrounding it, bulldozed a football playground and destryoed trees and networks of water an electricity at the northern entrance of Bethlehem city, central West Bank.
Head of Wadi Rahhal Municipality Abdullah Ziyada said in a statement that Israeli military vehicles had bulldozed and demolished a number of Palestinian houses and bulldozed agricultural lands in the village.
TEHRAN (FNA)- Israeli Forces advanced on Monday morning into the Northern Gaza Strip and bulldozed Palestinian lands.
al-Arroub refugee camp, north of Hebron, demolished houses and bulldozed trees,
4th -- (BNA) Israeli occupation forces uprooted olive orchards from Jib'a village in west Bethlehem and bulldozed vast lands in the village on pretext of them being considered as "disputed" lands.
The rail enthusiast comes face-to-face with tearful residents whose homes will be bulldozed in the plan for the non-stop 250mph London to Birmingham train service.
We have been living under the open sky in the debris of our bulldozed houses, we have no alternative places in such a sizzling hot and humid weather," they added.
A FORMER high school which educated thousands of pupils has been saved from being bulldozed and turned solely into houses.
A DERELICT city estate pub has been bulldozed as the council gears up for a massive pounds 100 million housing regeneration scheme.
He said the opposition had boycotted for Monday while it would join assembly proceedings on Tuesday because the treasury had bulldozed NRO in the meeting of National Assembly Standing Committee on Law and Justice.