Commonly used single-bucket loaders are classified according to engine power, transmission form, walking system structure and loading mode.
1, engine power: ① power less than 74kw for small loaders. ② Power in 74 ~ 147kw for medium loaders ③ power in 147 ~ 515kw for large loaders. ④ Power greater than 515kw for large loaders.
2, transmission form: ① hydraulic - mechanical transmission, small impact vibration, long life of transmission parts, easy to operate, speed and external load can be automatically adjusted, generally used in large and medium loaders; ② Hydraulic transmission: can be stepless speed regulation, control between convenient, but the start-up is poor, generally only used in small loaders; ③ Electric drive: stepless speed regulation, reliable work, simple maintenance, high cost, generally used in large loaders.
3, walking structure: ① tire type: light weight, fast speed, flexible mobility, high efficiency, not easy to damage the road surface, ground specific pressure, poor passability, but widely used; 2 Crawler type: small ground pressure, good passability, low center of gravity, good stability, strong adhesion, large traction, large specific cutting force, low speed, relatively poor flexibility, high cost, easy to damage the road surface when walking.
4, loading and unloading mode: ① front unloading type: simple structure, reliable work, good vision, suitable for a variety of work sites, widely used; ② Rotary: the working device is installed on the rotary table that can be rotated 360 degrees, the side unloading does not need to turn, the operation efficiency is high, but the structure is complex, the quality is large, the cost is high, the side stability is poor, and it is suitable for the smaller site. ③ Post-unloading type: front-end installation, back-end unloading, high efficiency, good operation safety.Loader
