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 ?
He has now accepted the homes will be bulldozed because of the problem uncovered by the buyers' solicitors.
Mr Hamilton said: "Part of the garden and shrubs had been bulldozed.
Ganzei: In 2000 we used standard planting methods with bulldozed strips 33 feet in width, spaced 100 feet apart with 810 seedlings per acre planted in a line down the middle of the strip from 8-12 inches apart.
Johnson," who, rather than helping to preserve the site, could have quietly bulldozed the fossils into oblivion.
Schindler bulldozed the rock to create a flat platform, on top of which he set what is, to my mind, among his most imaginative structures.
Meanwhile, Gaviotas is planning a course for Guardalavaca, a beach town in the province of Holguin, and Cubalse has the green light to give a face-lift to the former Rovers Club (now the Havana Golf Club), the only course not bulldozed after the revolution.
Once a thriving community of South Africans of different races and religions, its 60,000 residents were forcibly evacuated in the 1960s and their homes bulldozed to the ground.
Authorities stormed the encampment at Minnehaha Park, arrested thirty-six protesters and charged them with trespassing, burned makeshift shelters, and bulldozed the buildings, which were located next to the park.
Locals have taken to wearing Leo vampire masks, complete with fangs and blood, after the crew of his new film, The Beach, bulldozed sections of a sandy paradise on the idyllic island of Ko Phi Leh.
Glaciation bulldozed the surrounding terrain, with the ice mass splitting around the Hills and leaving them intact.
Breijiyah added that Israeli forces also broke into Killet Al Qoton and bulldozed about 30 dunums of it, that are property of Irtas village and Deheisheh camp residents south Bethlehem.
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.