The use and choice of loader

Loader is a kind of earthwork construction machinery widely used in highway, railway, construction, hydropower, port, mine and other construction projects, it is mainly used for shoveling soil, sand, lime, coal and other loose materials, but also for ore, hard soil and other light shoveling and digging operations. The replacement of different auxiliary working devices can also be used to move earth, lift and load and unload other materials such as wood.

    In the construction of roads, especially in the construction of high-grade highways, loaders are used for filling and digging of roadbed engineering, aggregate and loading of asphalt mixtures and cement concrete yards. In addition, it can also be used to push soil, scrape the ground and pull other machinery. Because the loader has the advantages of fast working speed, high efficiency, good mobility and light operation, it has become one of the main types of earthwork construction in engineering construction.

Selection principle

1, the choice of model: mainly based on the operation and use of the selection and determination. Generally in the quarry and soft base operations, the use of tire loaders with anti-skid chains;

2, the choice of power: generally use diesel engines with construction machinery, work in special areas, such as the altitude above 3000m, special plateau diesel engines should be used;

3, the choice of transmission type: generally choose hydraulic - mechanical transmission. The key component is the choice of torque converter form. The loaders produced in China mostly use twin-turbine, single-stage two-phase torque converter.

4, in the selection of loader, but also fully consider the braking performance of the loader, including multiple braking, parking braking and emergency braking three. There are three kinds of brake: shoe type, clamp disc type and wet multi-plate type. The driving mechanism of the brake generally adopts an afterforce device, and its power source is compressed air, gas cap oil and hydraulic type. The gas cap oil brake system is commonly used, and the dual-circuit brake system is generally used to improve the safety of driving.