Bulldozer is one of the main machinery of Earth-moving machinery, which is divided into tracked and tire type by way of walking. Because there are fewer tyre-type bulldozers. This paper mainly describes the structure and working principle of crawler bulldozer. The basic work of bulldozer excavation is: A. Shovel soil B. Soil C.
The majority of crawler bulldozers with power greater than 120KW use hydraulic-mechanical drives. This kind of bulldozer originates from the D155 type, D85 type, D65 type three basic type bulldozer manufacture technology which introduced the Japanese Komatsu Production Institute. After localization, stereotypes are TY320 type, TY220 type, TY160 type basic type bulldozer. In order to meet the needs of users of various operating conditions, our bulldozer manufacturers in the above three basic types of bulldozers, the expansion of product varieties, the formation of three kinds of bulldozers. TY220 Bulldozer series products, including TSY220 type wetland bulldozer, TMY220 type Desert bulldozer, TYG220-type Highland bulldozer, ty220f-type forest logging bulldozer, tsy220h-type sanitation bulldozer and DG45-type pipe-hanger machine. TY320 and TY160-type bulldozers are also expanding similar series of products. The TY160 series also has tsy160l type Super Wetland bulldozer and TBY160 type push and chop machine.
The development and expansion of product species of bulldozers not only satisfies the work adaptability of different working conditions, but also maintains the maximum versatility of parts (or interchangeability) with the basic type, which brings great convenience to the customers. For the convenience of users to buy accessories, the production plant has retained the Japanese Komatsu Company's parts number, only the modified parts of their own design, only to the number of their own manufacturers.
Crawler bulldozer mainly consists of engine, transmission system, working device, electrical part, cab and hood etc. Among them, the mechanical and hydraulic transmission system also includes hydraulic torque converter, coupling assembly, planetary gear type power shift transmission, central transmission, clutch and steering brake, final transmission and walking system.
The power output mechanism drives the working pump in the hydraulic system of the working device by means of gear transmission and spline connection. Variable speed variable torque hydraulic system variable speed pump, steering brake hydraulic system steering pump; The sprocket represents the final transmission mechanism of the two-level spur gear transmission (including the left and right end drive assembly); The crawler board includes A walking system, including a frame and a suspension assembly.
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