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A general milling machine consists of an 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 component of a milling machine, which is composed of the milling rotor shaft, cutter seat, and cutter head. It directly contacts the road surface and works through its high-speed rotating milling cutter to achieve the purpose of milling. The milling machine is equipped with an automatic leveling device, which takes the milling rotor side cover as the milling reference plane and controls two positioning hydraulic cylinders to maintain a constant milling depth;

The hydraulic system is used to drive the rotation of milling rotors, the walking of the entire machine, and the operation of auxiliary devices. It is generally a closed hydraulic system with multiple independent pumps, which does not interfere with each other and has high reliability during operation;

Some milling machines are equipped with tilt adjusters as needed to control the inclination of the rotor; Generally, large milling machines have an aggregate conveying device composed of a conveyor belt and a feeder, which can concentrate the milled loose materials and transport them to a randomly moving transport vehicle. The height of the conveying arm can be adjusted and can swing left and right to adjust the unloading position.

The specifications and models of milling machines vary slightly, but their basic working principles are the same or similar. The power transmission route of the milling machine: engine → hydraulic pump → hydraulic motor, hydraulic cylinder → working device.

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