Bulldozers are one of the main types of earthmoving machinery. They are divided into two types: crawler type and tire type. Because there are fewer tire-type bulldozers. This article mainly describes the structure and working principle of the crawler bulldozer. The basic operations of bulldozer excavation are: shoveling, moving and unloading.
Most of the crawler bulldozers with a power greater than 120KW use hydraulic-mechanical transmission. This type of bulldozer comes from the three basic types of bulldozer manufacturing technology, D155, D85 and D65 introduced by Komatsu, Japan. After localization, it is finalized as TY320, TY220 and TY160 basic bulldozers. In order to meet the needs of users in various working conditions, my country's bulldozer manufacturers have expanded their product varieties and formed three series of bulldozers on the basis of the above three basic types of bulldozers. TY220 bulldozer series products include TSY220 wetland bulldozer, TMY220 desert bulldozer, TYG220 plateau bulldozer, TY220F forest logging bulldozer, TSY220H sanitation bulldozer and DG45 pipelayer, etc. The TY320 and TY160 series bulldozers are also expanding similar series products. In the TY160 series, there are TSY160L ultra-wet bulldozers and TBY160 pushers.
