A general road milling machine is an equipment for asphalt pavement maintenance and construction, mainly used to remove surface defects such as bumps, oil waves, mesh patterns, and ruts on asphalt concrete surfaces of roads and urban roads. One of the economical and modern maintenance methods is to flatten the damaged old road surface and then lay a new one.
Due to its high equipment efficiency, simple construction process, easy control of milling depth, convenient and flexible operation after cold recycling lease, good operability, and direct recycling of ground old materials, it has been widely used in urban municipal roads and highway maintenance projects.
According to the form of milling, it can be divided into cold milling and hot milling. The cold milling type has the characteristics of high power, fast tool wear, and uniform cutting material particle size. It can be equipped with a sprinkler to spray water, and is widely used. The product has become a series, and due to the addition of heating devices, the hot milling type is more complex, usually used for road regeneration.
According to the rotation direction of the milling rotor, it can be divided into forward milling and reverse milling. When the milling machine is running, the rotation direction of the rotor is the same as that of the grinding wheel, which is a forward milling type, and vice versa.
According to the position of the milling rotor, it is divided into rear suspension type, middle suspension type, and rear axle coaxial type. The rear suspension type is a milled rotor suspended at the rear of the rear axle; The intermediate suspension type is milling the rotor between the front and rear axles; The coaxial type of rear axle is the coaxial arrangement of milling rotor and rear axle.
According to the working width of the milling rotor, it can be divided into three types: small, medium, and large. The milling width of a small milling machine is 300-800mm, and the driving operation of the milling rotor is mainly mechanical, especially suitable for ground processing with an area less than 100m2; The milling width of a medium-sized milling machine is 1000-2000mm, and the driving operation of the milling rotor is mainly hydraulic. The milling width of a large milling machine is greater than 2000mm, and is generally used in conjunction with other machine tools for gypsum profiling. The transmission mode of the milling machine is mainly hydraulic transmission.
According to the transmission mode, it can also be divided into mechanical and hydraulic types. The engineering of the milling machine leasing company states that the mechanical work is reliable, maintenance is convenient, transmission efficiency is high, manufacturing cost is low, but the structure is complex, the operation is not light, the operating efficiency is low, and the traction force is small, suitable for small road surface maintenance work in shallow cutting; The hydraulic structure is compact, lightweight, flexible, and has a large traction force, but it has high manufacturing costs and is difficult to maintain. It is suitable for deep maintenance of medium and large road cuts and pavements.
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