With the increasing prosperity of my country's maritime transportation, road freight and container transportation markets, the semi-trailer market is also developing, and the market demand for various accessories related to it is also increasing.

Semi-trailer accessories, as the name suggests, refers to various parts used in semi-trailers, the more common ones are axles, suspensions, leaf springs, outriggers, air chambers, air tanks, steel rings, tires, relay valves, Rope tensioner, spare tire lifter, tie rod, traction pin, car lights, etc., of which traction pins, axles, tires, steel rings, outriggers, and suspensions are the main purchased parts.

1.Trailer traction pin

The main function of the traction pin is to connect the semi-trailer with the tractor, connect with the traction seat of the main vehicle, and tow the semi-trailer.

At present, the traction pins on the market are mainly divided into 4 types, assembly 50, assembly 90, welding 50, welding 90, users can choose according to different models and actual use conditions.

2.Trailer axle

The semi-trailer axle, also known as the axle assembly, is mainly used to bear the load and maintain the normal driving of the semi-trailer on the road. Bearing capacity and so on play an important role.

Under normal circumstances, when it comes to the power core of a semi-trailer, car owners can easily think of the engine and gearbox. But in fact, the axle is also one of the semi-trailer power core assemblies, which plays a linking role in the power transmission process. If the axle is not selected properly, it will directly affect the safe use of the vehicle.

3. Trailer tires

The tires are in contact with the road surface and bear the weight of the car. Together with the suspension of the semi-trailer, they play a role in alleviating the impact, maintaining good adhesion to the road surface, and improving the traction, braking and passing performance of the semi-trailer. If a semi-trailer is not supported by wear-resistant, heat-resistant and durable tires, its safety performance and economic benefits will not be possible.

Tires are rubber products, which will naturally age in addition to wear and tear. Car owners usually need to pay attention to the maintenance and inspection of tires, clean up debris in time, and replace them in time if cracks are found.

4. Tailer rims

Also known as the wheel hub, it refers to the drum-shaped part that supports the tire in the inner contour of the tire and is mounted on the axle in the center. It is an important part of the semi-trailer. The semi-trailer travel process will generate lateral and longitudinal loads, accompanied by driving torque and braking torque, so the hub needs to bear a considerable part of the load, the longitudinal and lateral vibration should be small, the unbalance and inertia moment should be small, and the stiffness, strength and accuracy should be small. high.

In order to meet the market demand, the trailer rims launched by many manufacturers have been improved, such as the design of the sealing structure, the simplified maintenance process, and the extension of the maintenance cycle. Car owners can choose according to their needs when purchasing.

Trailer rims

5. Trailer landing gear

The trailer landing gear is a semi-trailer support device, which utilizes the principle of "standing on the top of the jack" and is located at the front end of the semi-trailer frame. It is used after the semi-trailer is separated from the tractor. As an important tool in the area where the force is concentrated, its role is very critical.

Trailer landing gear

6. Trailer suspension

Suspension is a general term for the force transmission connection device between the frame and the axle of a semi-trailer. Its function is to transmit the force and torsion acting between the wheels and the frame, and buffer the impact transmitted from the uneven road to the frame or body. force and reduce the vibration caused by it, so as to ensure that the car can drive smoothly.

Semi-trailer suspension can be divided into steel plate suspension, air suspension, rigid suspension and single-point suspension. Among them, the steel plate suspension has the highest application rate of ordinary semi-trailers in China. With the introduction and implementation of relevant laws and regulations, the utilization rate of air suspension is increasing, especially in the high-end transportation field, the advantages of air suspension are more obvious, and it is more and more favored by car owners.

Trailer suspension

The above are the main purchased parts of the semi-trailer. CIMC Intermodal Equilink Co., Ltd provides a full range of trailer parts such as trailer rims, trailer landing gear, trailer drum brake  etc. If you have any inquiries about trailer parts , please email us(Email: info.equilink@cimc.com), and you can also log in to our company website http://www.cimc-equilink.com for more information.

Various types of semi-trailer parts

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