Widely used for filling and compaction operations in large-scale engineering projects such as high-grade highways, railways, airport runways, dams, and sports stadiums, it can crush sandy, semi viscous, and cohesive soils, roadbed stabilized soils, and asphalt concrete pavement layers. The roller is suitable for various compaction operations due to the gravity of the machinery itself, causing permanent deformation and compaction of the compacted layer....

It is divided into track type bulldozers, tire type bulldozers, etc. Due to its ability to complete excavation, transportation, and unloading work alone, as well as its flexible operation, convenient rotation, small required working surface, and fast driving speed, it is widely used in field cleaning or leveling, foundation pit backfilling, and other operations.

The working device is the main component of hydraulic excavators. The SY series excavator is equipped with a backhoe working device, which is mainly used to excavate soil below the stopping surface, but can also excavate soil below large cutting heights. In addition to digging pits, digging trenches, and loading, it can also perform simple leveling work on the site. Excavation operations are suitable for excavating soil of grades I-IV, with hydraulic hammers or blasting methods required for grades V and above. The backhoe working device consists of the boom, arm, bucket, rocker, connecting rod, and hydraulic pipelines including the boom cylinder, arm cylinder, and bucket cylinder....