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 growing.
Semi-trailer accessories, as the name suggests, refer to various parts used on semi-trailers. The more common ones are axles, suspensions, leaf springs, outriggers, air chambers, air reservoirs, steel rims, tires, relay valves, rope tighteners, spare tire lifters, pull rods, traction pins, lights, etc. Among them, traction pins, axles, tires, steel rims, outriggers, and suspensions are the main accessories.
1. Towing pin
The main function of the traction pin is to connect the semi-trailer with the tractor, connect with the main vehicle traction seat, 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, and welding 90. Users can choose according to different models and actual usage.
2. Axle
The axle of a semi-trailer, also known as the axle assembly, is mainly used to bear weight and maintain the normal driving of the semi-trailer on the road. It is connected to the frame through the suspension, and wheels are installed at both ends. It plays an important role in the power, stability, and carrying capacity of the car.
In general, when it comes to the power core of a semi-trailer, car owners easily think of the engine and gearbox. But in fact, the axle is also one of the core power assemblies of the semi-trailer, playing a link role in the power transmission process. If the axle is not selected well, it will directly affect the safe use of the vehicle.
3. Tire
The tire contacts the road surface and bears the weight of the car. Together with the suspension of the semi-trailer, it plays a role in mitigating the impact, maintains good adhesion to the road surface, and improves the traction, braking and passability 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 are out of the question.
Tires are rubber products. In addition to wear and tear, they will also age naturally. Car owners 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. Steel rims
Also called wheel hubs, they refer to the cylindrical parts that support the tires with the inner contour of the tires, and are centrally mounted on the axles. They are an important part of semi-trailers. The semi-trailer will generate lateral and longitudinal loads during driving, accompanied by driving torque and braking torque. Therefore, the wheel hub needs to bear a considerable part of the load, and the longitudinal and lateral vibrations should be small, the unbalance and moment of inertia should be small, and the stiffness, strength, and precision should be high.
In order to meet market demand, many manufacturers have introduced improved steel rims, such as sealing structure design, simplified maintenance procedures, and extended maintenance cycles. Car owners can choose according to their needs when purchasing.
5. Outriggers
The outriggers are semi-trailer support devices. They use the principle of "standing wood jacks" and are located at the front end of the semi-trailer frame. They are used after the semi-trailer is separated from the tractor. As an important tool for dispersing the concentrated force area, its role is very critical.
6. Suspension
Suspension is the general term for the force-transmitting connection device between the frame and the axle of a semi-trailer. Its function is to transmit the force and torque acting between the wheel and the frame, buffer the impact force transmitted to the frame or body by the uneven road surface, and reduce the vibration caused by it to ensure that the car can run smoothly.
Semi-trailer suspension can be divided into steel plate suspension, air suspension, rigid suspension and single-point suspension. Among them, steel plate suspension is the most widely used in ordinary semi-trailers in China. With the introduction and implementation of relevant laws and regulations, the utilization rate of air suspension is constantly increasing, especially in the field of high-end transportation, where the advantages of air suspension are more obvious and are increasingly favored by car owners.
The above are the main accessories of semi-trailers. So, which semi-trailer accessories manufacturer is reliable?
Looking at the current domestic semi-trailer accessories market, on one side are high-profit industry giants, and on the other side are workshop-style products with substandard craftsmanship, and the polarization trend is more obvious. However, there are also brands with reliable quality and reasonable prices. Car owners still need to shop around when purchasing. For example, TND Axle, which has been deeply involved in the field of heavy-duty vehicle parts such as trailers and semi-trailers for more than 17 years, has long become a golden signboard in the industry. They focus on every detail, from the selection of raw materials to the control of production processes, and strive to achieve excellence. In the past 17 years, TND Axle has not only witnessed the ups and downs of the industry, but also won wide recognition in the market with its excellent product quality.
Their products, whether axles, suspensions or trailer parts, have undergone rigorous testing and inspection to ensure excellent performance and stability in harsh transportation environments. More importantly, TND Axle has always maintained a high degree of integrity and transparency in prices, never selling inferior products as good ones, and never falsely marking prices, truly achieving the ultimate cost-effectiveness.
It is this persistence in quality and sincerity to users that makes TND Axle's products deeply loved by users. Whether it is a large logistics company or an individual transporter, they have chosen TND Axle as their long-term partner. In the days to come, TND Axle will continue to uphold the business philosophy of "quality-oriented, integrity first" and provide more high-quality and reliable heavy-duty vehicle parts to more users.
