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 ?
However, the surface morphology of the head of dung beetle was selected for modification of bulldozing plates and mouldboard plough surfaces.
London, ON -- Pro-life, pro-family MP Pat O'Brien, who stood up to Prime Minister Paul Martin's bulldozing of same-sex "marriage" through Parliament, has announced he will be leaving politics.
The resistance of soil to bulldozing plates made of the aforementioned materials was measured on bulldozing resistance testing equipment.
They say bulldozing it is essential to their plans.
"Planners used to feel that the only way to fight urban blight was by bulldozing old buildings and creating new ones," she said.
Department of Justice may soon file a lawsuit against a group known as the Pilgrim family for bulldozing a 14-mile road in Wrangell-St.
Umramzi al-Qurimi, a 42-year-old Palestinian woman, told a reporter about fleeing her home in a refugee camp after Israeli soldiers started bulldozing it.
He gestures to a copy of a famous photo of Che and Fidel, both bearded and dressed in trademark guerrilla fatigues, playing a final round of golf before the bulldozing commenced.
2 CELEBRITY CAUSES/CAUSES CELEBRES, NOW AND FOREVER Linda McCartney vegetarian frozen dinners, Paul Newman chocolate bars (all proceeds to charity), Ben & Jerry, The Mike Douglas Show with John Lennon and Yoko Ono (on Rhino Home Video: "Five days that changed the course of television," featuring on-air phone calls to strangers to say "I love you, pass it on" and macrobiotic cooking with Black Panther chairman Bobby Seale), Ellen DeGeneres, Lisa Simpson, farmer Jose Bove bulldozing a new McDonald's outside of Paris before billions could be served, Sinead O'Connor tearing up a picture of the pope on Saturday Night Live, Pamela Anderson Lee's implant redux.
Through creative zoning and tax strategies, most cities could accomodate huge population increases and still improve the quality of residents' lives "without bulldozing another square meter of forest or farmland for the next two decades," Lowe contends.
The Meghwar community people, the residents of Sakro recorded a protest demonstration against the bulldozing of their homes.
He requested the court to restrain the government from razing the wall being an unlawful act and order a legal action against those who had instructed the demolition and were involved in bulldozing the wall.