What are the classifications of bulldozers?
Bulldozers are heavy-duty machines widely used in various earthmoving projects, and they can be classified in several ways based on different criteria. Here's a breakdown of the classifications:
I. Classification by Engine Power
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Small Bulldozers: With engine power below 75kW (or some argue 37kW), they are suitable for small-area or sporadic earthmoving operations with low productivity.
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Medium Bulldozers: Falling between small and large bulldozers in terms of power, their specific power range may vary depending on the classification standards. They are suitable for medium-sized earthmoving projects.
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Large Bulldozers: Equipped with engines exceeding 239kW or 250kW, they offer high productivity and are ideal for large earthmoving projects involving hard soil or deep frozen soil.
II. Classification by Traveling Device
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Crawler Bulldozers: Characterized by high tractive force, low ground pressure, excellent climbing ability, and versatility, they are suitable for various complex working conditions.
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Wheeled Bulldozers: Known for their fast traveling speed, good maneuverability, short operational cycle, and ease of relocation without damaging the ground, they are particularly suitable for urban construction and road maintenance projects. However, they have relatively low tractive force and may slip easily on wet or soft ground.
III. Classification by Blade Installation Method
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Fixed Blade Bulldozers: The blade is fixed at a right angle to the longitudinal axis of the mainframe, making the structure simple but limiting the operational flexibility to only pushing soil directly in front. They are commonly used in small and medium-sized bulldozers.
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Swing Blade Bulldozers: The blade can rotate a certain angle within the horizontal plane, and can be installed at a fixed right angle or non-right angle to the longitudinal axis of the mainframe. This provides a wider range of operations, making it easier to move soil to one side and excavate side ditches.
