What is a Bulldozer?

Feb. 06, 2020

Today Dozer China Factory will introduce the knowledge of bulldozers in detail.


Bulldozer is an earthmoving engineering machine capable of excavating, transporting and abandoning rock and soil. It is widely used in open-pit mines. For example, it is used for the construction of dumping grounds, leveling of automotive dumping grounds, accumulation of scattered ore rocks, leveling work flat plates and construction sites. It is used not only for auxiliary work, but also for main mining work. For example: stripping and mining of sand deposits, traction and boosting of scrapers and plows, and other earthmoving machinery to reduce the stripping step height when there is no transportation mining method.

 

Classification of bulldozers:

1. Divided by walking method

Bulldozers can be divided into Crawler Dozer and tire type. Tracked bulldozers have large traction, low ground pressure (0.04 to 0.13 MPa), strong climbing ability, but low driving speed. Tired bulldozers have high driving speed, flexible maneuverability, short operating cycle time, convenient transportation and transfer, but small traction force, and are suitable for situations that require frequent site changes and field work.


Crawler Dozer


Crawler Dozer


2. By application

It can be divided into two types: general type and special type. The universal type is a model that is produced according to standards and is widely used in earthwork. The special type is used in specific working conditions, including wetland bulldozers and marshland bulldozers that use triangular wide track pads to reduce the ground specific pressure, amphibious bulldozers, underwater bulldozers, cabin bulldozers, unmanned bulldozers, high prototypes and high Bulldozers operating in wet conditions.

 

The main technical requirements of bulldozers are:

1. Use humanized design

The appearance of the bulldozer produced in China and the layout of the cab are still far from those of the advanced countries in the world. This has little to do with the competition in China's bulldozer industry. In view of China's entry into the WTO and the gradual elimination of trade barriers for foreign equipment, we must align with advanced foreign companies and pay great attention to the appearance of our products and the comfort of the interior of the cab. The operating system is gradually approaching the excavator and automobile industries to reduce the labor intensity of the driver. The instrument and meter adopts three-level alarm electronic monitoring device and automatic fault diagnosis device. The cabin adopts a closed, air-conditioned cab with an air filter device, and adds advanced electronic equipment such as recorders and even DVDs to maximize the humanity of the driver.化 Requirements.

 

2. Application of energy saving technology

(1) The hydraulic system of the working device adopts constant differential overflow technology. In this way, during the speed adjustment of the small-opening valve of the working device, the excess oil supply from the oil pump can be returned to the oil tank without passing through the safety valve, and the pressure can be returned to the oil tank directly from the differential pressure valve. High certain value △ P, so as to achieve the purpose of reducing hydraulic power loss and lowering oil temperature.

(2) The hydraulic system and transmission system of the engine and working equipment adopt full power matching technology. The engine can automatically adjust the power output to the transmission system and the hydraulic system of the working device according to the actual working conditions, so as to maximize the use of engine power and achieve energy saving purposes.

(3) Hydrostatic transmission technology. Transmission adopts static pressure transmission. The whole machine reduces transmission components such as gearbox, torque converter (main clutch), steering clutch, etc., thereby greatly reducing mechanical power loss, and it is easy to achieve full power matching with the engine to achieve energy saving purposes.

3. Engine emissions meet Euro Ⅱ standards

With the increase in the construction and maintenance of transportation and infrastructure in large and medium-sized cities and the gradual stricter environmental protection requirements in the domestic and international markets, engine emissions requirements have reached at least Euro I standards, and some developed countries have even required Euro II standards. Therefore, the engine of the bulldozer must meet this market requirement as soon as possible.

 

The above is the knowledge about the bulldozer introduced by the Hydro Direct Drive Bulldozer supplier.

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