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What is a bulldozer?

Release Time: 2021-04-22


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What is a bulldozer?

Bulldozer is a kind of earth-moving machinery capable of excavating, transporting and discharging rock and soil. It has a wide range of uses in open-pit mines.

 For example, it is used for construction of dumping yard, leveling of automobile dumping yard, accumulation of scattered ore rock, leveling of work flats and construction sites.

It is not only used for auxiliary work, but also for main mining work. For example: stripping and mining of placer deposits, pulling and boosting of scrapers and rock ploughing machines, and cooperating with other earth-moving machinery to reduce the height of stripping steps when there is no transportation mining method.

second-hand CAT bulldozer

Bulldozer structure and work

Bulldozers are one of the main types of earth-moving engineering machinery. They are divided into crawler type and tire type according to the walking mode. Because there are fewer tire type bulldozers.

This article mainly describes the structure and working principle of crawler bulldozers. The basic operations of bulldozer excavation are: A. Shoveling soil B. Transporting soil C. Unloading soil.

The development and expansion of bulldozer products must not only meet the work adaptability of different working conditions, but also maintain the maximum versatility (or interchangeability) of parts and components with the basic model, which brings great use and maintenance to the majority of users. Great convenience.


The crawler bulldozer is mainly composed of engine, transmission system, working device, electrical part, cab and hood. Among them, mechanical and hydraulic transmission systems include hydraulic torque converters, coupling assemblies, planetary gear power shift transmissions, central transmission, steering clutches and brakes, final drives and walking systems.

The power output mechanism drives the working pump in the hydraulic system of the working device, the variable-speed pump of the variable-torque variable hydraulic system, and the steering pump of the steering brake hydraulic system by means of gear transmission and spline connection;

The sprocket represents the final drive mechanism of the secondary spur gear drive (including the left and right final drive assemblies); the track shoe includes the walking system including the track assembly, the trolley frame and the suspension assembly.

China Machinery Trading Co——Chinese used bulldozer dealer, all used excavators have undergone strict service and quality assurance.