Bulldozer is a major mechanical earthmoving machinery, according to the walk way into the crawler and tire-two. Because fewer tire-type bulldozer. This paper describes the structure and working principle of the crawler bulldozer. The basic job of excavation bulldozer is: A. B. shoveling earth C. unloading soil.
Power greater than 120KW crawler dozer, the vast majority using hydraulic - mechanical transmission. Such bulldozer from the introduction of Japan's Komatsu D155 model, D85 type, D65 bulldozer-type three basic manufacturing technology. After localization, setting type for TY320, TY220 type, TY160 type Basic bulldozer. In order to meet user demand for the use of work conditions, our bulldozer manufacturer on the basis of the above three basic bulldozer on, expand product variety, the ion of three series of bulldozers. TY220 bulldozer products, including TSY220 wetland bulldozers, TMY220 type desert bulldozer, TYG220 type plateau bulldozer, TY220F Forest logging bulldozer, TSY220H type sanitation bulldozers and DG45 type Pipelayers like. TY320 TY160 Series bulldozer type and similar products are also expanding. TY160 series there TSY160L super wetland bulldozers and TBY160 type push Grilled machines.
Product development to expand the kinds of bulldozers, both to meet the different conditions of work adaptability, it must maintain maximum commonality of parts (or interchangeable) and basic, which for the majority of users use the service will have an extremely great convenience. For the convenience of users to buy accessories, manufacturing plant have retained Komatsu's parts numbers only modification to design parts, only preceded by their own manufacturers numbers.
Crawler excavators mainly by the engine, transmission, equipment, electrical parts, cab and hood and other components. Among them, the mechanical and hydraulic drive system also includes a torque converter, coupling assembly, a planetary gear-type power shift transmission, central transmission, steering clutches and steering brakes, final drives and walking systems.
Power output means by way of gear and spline drive connected to the hydraulic system of pumps, variable speed torque variable speed pump hydraulic system, steering system, brake hydraulic steering pump; representatives of two straight tooth sprocket gear final drive mechanism (including left and right final drive assembly); including crawler track shoe assembly, sets the frame and suspension assembly including a travel system.