Backhoe loaders are mainly used for shoveling, loading, unloading, soil transportation, and bulk materials such as rock, and can also be used for light shoveling of rock and hard soil. If you change a different working device, you can also complete the work of bulldozing, lifting, loading and unloading other materials. In highway construction, it is mainly used for filling and excavation of subgrade works, aggregate and loading of asphalt and cement concrete yards. Because it has the advantages of fast operation speed, good maneuverability, and easy operation, it has developed rapidly and has become the main machine in earthwork construction.

Selection principle of backhoe loader
1. Selection of backhoe loader models: selection and determination are mainly based on the operation occasion and use. Generally, operations are carried out in quarries and soft bases, and tire loaders with snow chains are mostly used;
2. The choice of power of backhoe loader: generally use diesel engines for construction machinery, and work in special regions, such as places with an altitude above 3000m, special high prototype diesel engines should be used;
3. Selection of transmission type of backhoe loader: hydraulic-mechanical transmission is generally used. The key component is the choice of torque converter form. Most of the loader produced in China use twin-turbo, single-stage two-phase torque converter.
4. When choosing a backhoe loader, the braking performance of the loader must be fully considered, including three types of braking, parking brake and emergency braking. There are three types of brakes: hoof type, caliper disc type and wet multi-plate type. The driving mechanism of the brake generally adopts a force device, and its power sources include compressed air, air cap oil and hydraulic type. The commonly used air-top oil brake system generally uses a dual-circuit brake system to improve driving safety.

The working device of the backhoe loader is installed on a turntable that can rotate 360 °. The side unloading does not need to turn around and has high operating efficiency.