A semitrailer is a type of trailer designed to carry cargo, featuring an axle located behind the center of gravity when the vehicle is evenly loaded. It includes a connecting device that transfers vertical or horizontal force to the tractor, making it part of a semitrailer train when paired with a tractor unit.

Classification of Semitrailers

Semitrailers can be classified in various ways:
1. By Axle Number: 1 axle, 2 axles, 3 axles.
2. By Length: 8.6m, 10m, 11.16m, 12.1m, 12.5m, 13m.
3. By Tonnage: 9T, 15T, 20T, 22T, 25T, 26T, 28T, 30T, 31T, 32T.
4. By Vehicle Type: Ordinary sideboard, warehouse sideboard semitrailer, coal hauling semitrailer, self-unloading semitrailer, low-bed semitrailer, container flatbed semitrailer, container box skeleton transport semitrailer, van semitrailer.Key Structural Components of Semitrailers
1. Hinges: Connect the compartment railing to the frame, available in various types such as large, small, flat, and cast steel hinges depending on the load requirements.

2. Frame: Constructed from welded longitudinal beams and cross beams using automotive steel plates, forming a space frame structure that supports loads and houses the traction pin, suspension, and support devices.

3. Car Floor: Directly contacts the cargo and is prone to wear. It can be made from flat or patterned plates of various thicknesses (e.g., 3mm, 4mm, 4.5mm).

4. Outrigger: Supports the front load of the semitrailer when detached from the tractor. It includes a base, pull rod transmission mechanism, inner and outer square tubes, gearbox, and control crank. Outriggers can be single-action or linkage types.

5. Suspension: Comprises components like brackets, tie rods, upper and lower axle clamps, U-bolts, leaf springs, and parallel arms. It transmits loads, absorbs shock, and helps in adjusting the axle alignment to prevent tire wear.

CIMC Equilink is a leading global provider of semitrailer accessories and parts, offering a wide range of components essential for various types of semitrailers. We supply high-quality hinges, frames, car floors, and outriggers, tailored to meet specific load and structural requirements. CIMC Equilink also provides advanced suspension systems, wheel bridge assemblies, and air circuit components, ensuring reliable performance and safety. Additionally, we offerings include electrical circuits and guardrails for enhanced vehicle protection and functionality. With a comprehensive selection of parts, CIMC Equilink supports the maintenance and customization of semitrailers, catering to diverse industry needs.

6. Wheel Bridge Assembly: Includes tires, steel rims, wheel hubs, brakes, and axles, forming the core of the vehicle's rolling system.

7. Air Circuit: Facilitates normal and emergency braking, consisting of air joints, inflation pipelines, control pipelines, emergency relay valves, air reservoirs, and brake air chambers.
8. Circuit: Provides lighting and signal transmission, connecting to the tractor via a seven-star plug, with wiring typically concealed within the frame.

9. Guardrail: Prevents foreign objects from entering under the vehicle, offering protection.

10. Tool Box: Used to store tools, tarps, ropes, and other materials, usually located on the side or rear of the vehicle.
These components form the essential knowledge base for understanding and operating semitrailers effectively.

CIMC Equilink is a leading global provider of semitrailer accessories and parts, offering a wide range of components essential for various types of semitrailers. We supply high-quality hinges, frames, car floors, and outriggers, tailored to meet specific load and structural requirements. CIMC Equilink also provides advanced suspension systems, wheel bridge assemblies, and air circuit components, ensuring reliable performance and safety. Additionally, we offerings include electrical circuits and guardrails for enhanced vehicle protection and functionality. With a comprehensive selection of parts, CIMC Equilink supports the maintenance and customization of semitrailers, catering to diverse industry needs.

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