The loader is a kind of earthwork construction machinery which is widely used in highway, railway, construction, hydropower, port, mine and other construction projects. Wheel Loader It is mainly used for shoveling soil, gravel, lime, coal and other bulk materials. , Hard soil and other minor shovel excavation operations. Dress up different auxiliary work equipment can also be carried out, lifting and other materials such as timber loading and unloading operations. In the construction of roads, especially in high-grade highways, Wheel Loader the loaders are used for the filling and filling of roadbed works such as filling and digging, asphalt mix and cement concrete field. In addition can also push the soil, scraping the ground and traction other machinery and other operations. Because the loader has the advantages of fast operation, high efficiency, good maneuverability and light operation, Wheel Loader it is one of the main models of earthwork construction and mining in engineering construction.
The technological advances in military equipment during World War II led to the production of more reliable hydraulic systems, which were soon applied to the new generation of wheel loaders after the war was completed. Wheel Loader Over time, manufacturers have begun to develop larger, more functional machines.
With the hydraulic link device, instead of the mast structure, Wheel Loader dedicated chassis, with a modern loader shape, improve the speed of lifting, unloading height and digging force, which can be used to shovel loose earth and stone, which is The first major breakthrough in the development of the loader was seen as the forerunner of the modern wheel loader.
In 1958, Case (Case) produced the first four-wheel drive loader, model W-9, followed by the introduction of W-10 and W-12, front-wheel drive W-5 wheel loader. Wheel Loader Unlike a competitor, the cab is installed on the chassis. This provides a good view, and then the manufacturer gradually moves the cab to the rear chassis.
The early wheel loader had no small safety problems, Wheel Loader and one of the main problems was the pivot arm position behind the operator, which was likely to be caught between the loader arm and the hydraulic cylinder. With the US National Security Council and the manufacturer to carry out reconstruction design, Hough (Hough) in the loading arm of the pivot point and the operator before the location made changes. The manufacturer will put the loader's seat front or rear, which was more controversial in the design loader at the time. Later, the driver's seat was gradually adopted by the manufacturer.
In the 1960s, it was a decade of wheeled loader capacity. Manufacturers are in the development of large loaders and applications with mines, Wheel Loader articulated loaders are widely used, the advantages of articulated steering is: the bucket with the front frame steering, to meet the in situ steering; Wheel Loader and rigid frame than a cycle of operations The average travel distance of 51%, 50% increase in production efficiency; turning radius is small, flexible, suitable for narrow site operations.