Atlas Copco Gears Main Functions
Power Transmission: Transmits the power from the motor to the working components of the air compressor (such as the screw rotor, piston crankshaft), driving the compression mechanism to operate.
Speed Adjustment: Adjusts the rotational speed of the working components (such as lowering or increasing the rotor speed) through different gear combinations, matching the compression requirements.
Torque Conversion: Changes the output torque of the power to ensure appropriate driving force in different working conditions (such as startup, full-load operation).
Synchronous Operation: In double-screw air compressors (such as screw machines), the gears ensure precise meshing and synchronous rotation of the male and female rotors, avoiding interference and collision.
Common Types and Applications
According to the type of air compressor and transmission requirements, they are mainly divided into the following categories:
Cylindrical Gears
The teeth are distributed on the cylindrical surface, including straight teeth, helical teeth, and herringbone teeth, etc.
Application: Main transmission gears of screw-type air compressors (mostly helical gears, with smooth transmission and low noise), crankshaft gears of piston-type air compressors.
Characteristics: Simple structure, high transmission efficiency (up to 98% or more), suitable for parallel-axis transmission.
Conical Gears
The teeth are distributed on the conical surface, used for transmission between intersecting axes (usually 90°).
Application: Transmission systems of some mobile air compressors, used when the power transmission direction needs to be changed.
Characteristics: Can achieve vertical power transmission, but requires high manufacturing accuracy and is more costly.
Synchronous Gears
Designed specifically for double rotors (such as screw, sliding vane), ensuring that the two rotors maintain a fixed speed ratio and clearance.
Application: Air compressors without oil (as they do not rely on oil film lubrication, they need forced synchronization with gears).
Characteristics: Extremely small tooth side
