Pavement milling machine and the development trend of product introduction - the road milling machine, trend - the machine tool industry

Pavement milling machine and the development trend of product introduction - the road milling machine, trend - the machine tool industry

Asphalt pavement milling machine is a mechanical maintenance and construction of major aircraft, mainly used in highways, urban roads owned asphalt pavement removal kit, oil wave, reticulate, rutting, etc.. Road milling machine milling damage with the old shop floor, then laying a new surface is the most economical method of modern conservation, because of its high efficiency, the construction process is simple, easy to control the milling depth, flexible operation, good mobility, milling of the old material can be directly recycled and so on, which is widely used in urban municipal road and highway maintenance projects.

1, classification and applications Form under the milling, milling machine can be divided into cold and hot milling milling-type type two. Cold milling configurations greater power, faster tool wear, cutting materials with uniform size can be set to spray sprinklers widely used, the product has become a series; hot mill-type heating device Ershi the addition of more complicated structure, the general use Regeneration work on the road.

Direction of rotation of the rotor by milling, can be divided into clockwise and counter-type milling-type two. Direction of rotation of the rotor and the wheel milling machine walking the same direction of rotation for the clockwise type, on the contrary against the mill type.

According to structural characteristics, divided into two kinds of wheeled and tracked. Wheeled mobility, easy transition, especially for small and medium road operations; tracked more than 2000mm width for the milling of large milling machine,

Have old material recovery, suitable for large-scale road recycling project.

By milling rotor position can be divided into after the suspension, the suspension and coaxial with the rear axle. After the milling rotor suspension hanging on the rear axle; in the suspension or milling around the bridge in between the rotor; rear axle milling rotor coaxial or coaxial arrangement with the rear axle.

According to the operating width of the milling rotor can be divided into small, medium and large three kinds. Small milling machine milling width 300 ~ 800mm, milling rotor drive system to use more mechanical, mainly applicable to the construction area of less than 100M2 road maintenance works; medium-sized milling machine milling width 1000 ~ 2000mm, milling rotor Transmission mostly hydraulic; large milling machine milling width of 2000mm or more, usually used in conjunction with other machinery to form a regenerative repair of road equipment, the milling rotor drive system is also mostly hydraulic. Under the transmission mode is divided into mechanical and hydraulic types. Mechanically reliable, easy maintenance, high transmission efficiency, low cost, but its complex structure, the operation is not portable, low operating efficiency, less traction for cutting shallow small-scale road maintenance operations; hydraulic compact , easy to operate, flexible, great traction, but the manufacturing costs are high, maintenance is more difficult for cutting deep, the large-scale road maintenance operations.

Second, application characteristics 1, using the milling machine milling the road surface can be quickly and efficiently deal with disease, to maintain a smooth surface.

2, renovation of the road milling process can be used to maintain the level of the original road surface elevation. Milling process can cut out the damaged road surface, the new material to fill the original space by compacting the road after the original contour, to maintain the original level of surface elevation, which makes walking through the road culvert viaduct or overpass bridge structure will not load an impact load, and the bridge through the elevation change. 3, to ensure a good combination of old and new pavement materials, increase its service life. Milling process can use the side and bottom of the filler Kengbian neat, uniform depth to form a combination of old and new material easy-to-Z geometric surface, so that after the renovation greatly improved the life of the new road.

4, is conducive to the recycling of old pavement. As you can grasp the depth of cut, milling down the material was not clean and the rules of small particles, can no longer cover up the scene can be broken or fixed processing yard recycling and greatly reduce the construction cost, but also a kind of environmental protection measures.

3, the main structure and working principle

General milling machine from the engine, frame, rotor milling, milling depth adjustment device, hydraulic components, aggregate conveyor, steering and braking systems and other components.

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