What are the types of semi-trailers

There are various types of semi trailers, which can be subdivided according to the structure and purpose of the cargo area as follows:
1、 Classification by cargo location structure
Fence type semi-trailer
Structure: The cargo area is a fence structure with strong adaptability to the cargo.
Usage: Suitable for medium to long distance transportation of medium to heavy and bulk goods, such as steel, stone, cement, etc.
Variant: Gooseneck style rail semi-trailer has a lower cargo surface, lower center of gravity, convenient turning, and strong passability on height restricted sections.
Warehouse grate semi-trailer
Structure: The cargo area adopts a fence design with detachable guardrails.
Usage: Mainly used for the transportation of agricultural and sideline products (such as fruits and vegetables) and other light foam goods, with a lightweight structure and low cost.
Variants: including regular type and high-low plate type, with the latter having adjustable platform height to meet different cargo requirements.
Van Semi-trailer
Structure: The cargo position is designed as a fully enclosed box, which is rainproof and anti-theft.
Usage: Suitable for high-value goods transportation, such as household appliances, textile products, coal, sand and gravel, etc.
variant:
Traction rod type: Connected to the tractor through a traction rod, it has high flexibility.
Mid axle type: The axle is located in the middle of the vehicle, suitable for lightweight transportation.
Lightweight aluminum alloy material: reduces weight by 15% -20%, improves fuel economy.
platform semi-trailer
Structure: No box body design, flat cargo platform, flexible loading and unloading.
Usage: Commonly used for transporting steel, large machinery equipment, containers, etc., requiring the use of straps to secure goods.
Variant: Concave beam flatbed semi-trailer has a lower cargo platform, suitable for transporting ultra-high cargo.
2、 Classified by dedicated use
Container semi-trailer
Structure: The cargo area is a frame structure without a bottom plate, specifically designed for transporting standard containers.
Usage: Suitable for international cargo transportation, multimodal transport (such as ships, ports, highways, transfer stations, etc.).
variant:
Flat type: With a flat cargo platform, it can also transport ordinary long and large goods.
Skeleton type: No cargo platform, the container is fixed to the chassis skeleton through a twist lock device.
Tank semi-trailer
Structure: The cargo area is a closed tank and requires pressure vessel certification.
Purpose:
Liquid transportation: such as fuel, chemical liquids, asphalt, etc.
Bulk material transportation: such as cement, granular materials, etc.
Technical requirements: The wall thickness of the tank body should be ≥ 5mm and equipped with anti wave plates to reduce liquid impact.
Self dumping semi-trailer
Structure: The cargo compartment is equipped with a self unloading function, which can be overturned or overturned for unloading through a hydraulic system.
Purpose:
Off road transportation: Heavy and super heavy dump trailers, used for large-scale mining and engineering transportation, usually used in conjunction with excavators.
Highway transportation: Light and medium-sized ordinary dump trucks are used for transporting loose goods such as sand, gravel, soil, coal, etc., usually used in conjunction with loaders.
Low flatbed semi-trailer
Structure: The height of the cargo platform is extremely low, the diameter of the wheel end is small, and the center of gravity is low.
Purpose: Specialized in transporting heavy goods that cannot be disassembled, such as heavy-duty vehicles, rail vehicles, mining machinery, engineering machinery, etc.
Advantages: Strong stability and passability, suitable for transporting ultra-high goods or passing through overhead obstacles.
Vehicle transportation semi-trailer
Structure: Cargo platforms are often designed with fences and consist of two layers of loading platforms.
Usage: Mainly used for transporting passenger cars such as sedans, vans, commercial vehicles, jeeps, etc.
Variant: The pull-out design can extend the length of the cargo platform and adapt to the transportation needs of different vehicle models.
Semirremolque de transporte de mercancías de gran tamaño
Structure: Specially designed for ultra wide, ultra high, ultra long, and overweight goods, with a sturdy structure.
Purpose: Transport indivisible large goods, such as large power plant equipment, bridge components, industrial machinery, etc.
Technical requirements: Special road rights approval is required, and professional fixed devices and escort vehicles must be equipped.
Special semi-trailer
Structure: Customized according to specific needs, such as livestock transport vehicles, refrigerated trucks, poultry transport vehicles, etc.
Purpose:
Livestock transport vehicles: equipped with ventilation and drinking water systems to ensure the safety of animal transportation.
Refrigerated truck: equipped with refrigeration equipment, used for transporting perishable foods, pharmaceutical products, etc.
Poultry transport vehicle: specially designed for transporting live poultry, equipped with layered cages and ventilation systems.