Main Classifications
Tractor units on the market are primarily categorized into two types: full-trailer tractors and semi-trailer tractors.
Semi-trailer tractors: The front section of the semi-trailer rests on the fifth-wheel coupling located at the rear of the tractor unit; the tractor's rear axle bears a portion of the trailer's weight.
Full-trailer tractors: The front end of the full trailer connects to the rear of the tractor unit; the tractor provides only forward pulling force to tow the trailer but does not bear the trailer's downward weight.
Functions of Tractor Units
Anti-slip: Prevents drive-wheel spin when driving on slippery surfaces (such as snow), enabling smooth starting and acceleration. Especially on snowy or muddy roads, the traction control system ensures smooth acceleration and prevents the vehicle from sliding sideways or fishtailing due to wheel slip.
Agility: Ensures good maneuverability and flexibility for the vehicle combination during towing operations.
Reliable operation: Ensures a secure connection between the tractor and the trailer, as well as convenient and rapid coupling and uncoupling.
Stability: Transmits traction force smoothly to the trailer and provides a cushioning effect against shock loads.
Emergency rescue: At the scene of traffic accidents or other emergencies, tractor units can be used to quickly tow away severely damaged vehicles.
