A typical milling machine consists of an engine, frame, milling rotor, milling depth adjustment device, hydraulic components, material conveying device, steering system, and braking system.
The milling rotor is the main working component of the milling machine. It comprises a rotor shaft, cutter holder, and cutter head, and directly contacts the road surface. It achieves milling by using its high-speed rotating cutter. The milling machine is equipped with an automatic leveling device that uses the side cover of the milling rotor as the milling reference surface and controls two positioning hydraulic cylinders to maintain a constant given milling depth.
Its hydraulic system drives the rotation of the milling rotor, moves the machine, and operates auxiliary devices. It is generally a multi-pump, independent, closed-loop hydraulic system, ensuring no interference and high reliability during operation. Some milling machines are equipped with a tilt adjuster to control the rotor's tilt. Large milling machines typically have a material conveying device consisting of a conveyor belt and a collector. This device collects and conveys the milled material to a moving transport vehicle. The height of the conveyor arm is adjustable, and it can swing left and right to adjust the unloading position.
Milling machines vary slightly in structure and layout depending on their specifications and models, but their basic working principles are the same or similar. The power transmission route for a milling machine is: engine → hydraulic pump → hydraulic motor/cylinder → working device.
