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Guangzhou Qing Qin Yu Environmental Protection Technology Co., Ltd.

Sales Center: Room 1010, South Tower, Xindacheng Plaza, 27 Erheng Road, Shuiyin Road, Yuexiu District, Guangzhou

Tel: 020-38989165

Fax: 020-38989166

Contact: 13925069066 Wu Jingli

Email: 1272244869@QQ.COM

Working principle of milling machine

Release time:

2023-11-10 16:43

Pavement milling machine is one of the main types of asphalt pavement maintenance construction machinery, asphalt coagulationSoilOne of the main equipment for pavement maintenance and construction is mainly used for the excavation and renovation of asphalt concrete surface layers such as highways, urban roads, airports, freight yards, etc. It can also be used to remove defects such as pavement packing, oil waves, reticulated patterns, rutting, etc. It can also be used to excavate pavement pits and grooves, as well as to roughen cement pavement and mill the wrong platform of the surface layer.

Milling the damaged old pavement with a road milling machine, and then laying a new surface layer is one of the most economical modern maintenance methods. Because of its high efficiency, simple construction process, easy control of milling depth, convenient and flexible operation, good mobility, milling of old materials can be directly recycled, etc., it is widely used in urban municipal roads and highway maintenance projects.

Main structure and working principle

The general milling machine is composed of engine, frame, milling rotor, milling depth adjustment device, hydraulic components, aggregate conveying device, steering system and braking system.

The milling rotor is the main working part of the milling machine. It is composed of the milling rotor shaft, the cutter seat and the cutter head. It directly contacts with the road and achieves the purpose of milling through its high-speed rotating milling cutter. The milling machine is equipped with an automatic leveling device, which uses the side cover of the milling rotor as the milling reference surface and controls two positioning hydraulic cylinders to keep the given milling depth constant;

Its hydraulic system is used to drive the milling rotor to rotate, the whole machine to walk, auxiliary device work, etc. It is generally a closed hydraulic system with multiple pumps independent of each other, which does not interfere with each other and has high reliability when working.。

Some milling machines are equipped with inclination adjusters as required to control the inclination of the rotor. Generally, large milling machines have an aggregate conveying device composed of a conveyor belt and a collector, which can concentrate and transfer the milled bulk material to a random walking vehicle. The height of the conveying arm can be adjusted and can swing left and right to adjust the unloading position.

When the specifications and models of the milling machine are different, their structure and layout are slightly different, but the basic working principle is the same or similar. Milling machine power transmission route: engine→Hydraulic pump→Hydraulic motor, hydraulic cylinder→Working device.