The production of bulldozers in China began only after the founding of New China. Initially, bulldozers were installed on agricultural tractors. With the development of the national economy and market, the demand for large and medium-sized crawler bulldozers in large mines, water conservancy, power stations, and transportation departments continues to increase. Let ’s learn about the bulldozer together today.
1. Performance characteristics of bulldozer
The bulldozer is equipped with a bulldozer blade, which is mainly used for cutting or short-distance transportation of earth and stone or bulk materials, and its production capacity is determined according to the engine power. Bulldozers used for road construction are divided into medium-sized (59 ~ l03kw) and large (118-235kW ) And extra large (more than 235kW). Bulldozers are generally suitable for construction environments with strong seasonality, concentrated engineering volume and poor construction conditions.
2. Features and applicable scope of commonly used bulldozers
(1) Crawler type: This type of bulldozer has the advantages of large attachment traction and strong climbing ability. It can compete in a more dangerous working environment. It is a representative type of bulldozer and is widely used in various earthwork projects;
(2) Tire type: This type of bulldozer has the advantages of high driving speed, short operating cycle time, no damage to the road surface due to transportation transfer, and good maneuverability, which is suitable for municipal engineering;
(3) Special type: This type of bulldozer is suitable for specific working conditions. Wetland bulldozers, amphibious bulldozers, underwater bulldozers, blasting bulldozers, cabin bulldozers, military rapid bulldozers, etc. belong to this type of bulldozers.
3. The use of bulldozer
The bulldozer is a machine composed of a bulldozer with a tractor as the original moving machine and a cutting blade; it is used to clear land, road structures or similar work.
The bulldozer is an engineering vehicle with a large metal bulldozer in front. When using it, put down the bulldozer, shovel and push mud, sand and stones forward. The position and angle of the bulldozer can be adjusted. The bulldozer can complete the work of digging, transporting and unloading the soil separately, and has the characteristics of flexible operation, convenient rotation, small working surface required, and fast driving speed. It is mainly suitable for shallow excavation and short transportation of one to three types of soil, such as site cleaning or leveling, excavation of foundation pits with a small depth and backfill, and construction of subgrades with a small height.
The bulldozer is also a short-distance self-propelled soil shovel transportation machine, mainly used for short-distance construction operations of 50-100 m. Bulldozers are mainly used for excavating cuts, constructing embankments, backfilling foundation pits, removing obstacles, removing snow, and leveling the site. They can also be used to complete the shoveling and stacking of loose materials within a short distance. When the self-propelled shovel has insufficient traction, the bulldozer can also be used as an auxiliary shovel, and the bulldozer is used for jacking. The bulldozer is equipped with a ripper, which can loosen hard soil, soft stone or cracked layer rock above grade Ⅲ and Ⅳ, cooperate with the scraper for pre-loosening operation, and cooperate with hydraulic backhoe digging device and hinged towing and other auxiliary working devices Excavation and rescue towing and other operations. Bulldozers can also use hooks to draw various towing tools (such as towing scrapers, towing vibratory rollers, etc.) for operation.
The bulldozer is very versatile and is one of the most commonly used working machines in soil shovel transportation machinery. It occupies a very important position in earthwork construction machinery. Bulldozers play a huge role in the construction of highways, railways, airports, ports and other transportation, in mining, farmland reconstruction, water conservancy construction, large-scale power stations and national defense construction.
