What safety features does a single-tire compartment semi-trailer have?

In the logistics and transportation industry, safety is a core element in vehicle design. Single-tire compartment semi-trailers, with their advantages such as lightweight and efficient loading, are gradually becoming the mainstream vehicle type for bulk cargo transportation. The upgrade of its safety configuration is not only reflected in the optimization of the traditional structure, but also integrates intelligent and modular innovative technologies, providing all-round protection for drivers and goods.

I. Braking System: Disc brake + hydraulic retarder, building a dual safety defense line

According to the GB 7258-2017 standard, three-axle side-mounted semi-trailers have been mandatorily equipped with disc brakes since 2020. Compared with traditional drum brakes, disc brakes have a 40% improvement in heat dissipation performance and a 30% increase in thermal fade resistance, effectively avoiding the risk of braking failure on long downhill sections. For instance, a 13-meter single-compartment semi-trailer of a certain brand is equipped with disc brakes custom-made by BPW axle factory, which, in combination with a hydraulic retarder installed at the tractor head, provide a dual guarantee of "mechanical braking + auxiliary braking". The hydraulic retarder generates braking force through hydraulic damping and can withstand 80% of the braking load on long downhill slopes, significantly reducing brake disc wear and extending the service life to more than twice that of traditional models.

Ii. Suspension System: Air suspension + adaptive adjustment to enhance driving stability

Air suspension has become a standard feature of high-end single-compartment semi-trailers. It achieves dynamic adjustment of the vehicle body height through the inflation and deflation of airbags. When empty, it lowers the vehicle body to reduce wind resistance, and when fully loaded, it increases the ground clearance to avoid scratches. Actual measurement data from a certain logistics enterprise shows that the cargo displacement rate of models equipped with air suspension on bumpy roads has decreased by 60%, and the tire wear rate has dropped by 45%. More advanced products are also equipped with electronic control systems that can monitor the vehicle load distribution in real time and automatically adjust the airbag pressure. For instance, when a certain vehicle model is loading coal, the system detects a 20% increase in the rear axle load and immediately raises the pressure of the rear airbag by 15% to ensure that the vehicle remains level at all times.

Iii. Structural Safety: High-strength steel + intelligent monitoring, enhancing protective capabilities

Modern single-tire compartment semi-trailers widely use T700 high-strength steel, with a yield strength of 700MPa, which is twice that of ordinary Q345 steel. A 13-meter model of a certain brand has optimized the structure of the concave-convex through beam. Under the premise of ensuring a load capacity of 45 tons, its self-weight has been controlled at 6.28 tons, reducing the weight by 1.2 tons compared with traditional models. In terms of safety configuration, the vehicle is equipped with a 360-degree panoramic camera and blind spot monitoring system, which can display the images around the vehicle in real time and eliminate blind spots. In addition, a certain utility model patent product also introduces a mobile limit mechanism, which realizes the self-adaptive fixation of goods through a spring adjustment structure, effectively solving the problem of goods sliding in traditional warehouse grid trucks.

Four. Detail Design: Anti-splash device + emergency protection, providing all-round safety protection

In response to the safety hazards of driving in rainy weather, single-tire compartment semi-trailers are required to be equipped with anti-splash devices. It adopts a streamlined mudguard and rubber skirt design, which can reduce the height of mud and water splashing by 80% and avoid blocking the view of the vehicles behind. In terms of tire safety, a certain model is equipped with a tire pressure monitoring system (TPMS), which can display the pressure and temperature of each tire in real time and automatically alarm when the tire pressure is abnormal. For scenarios involving the transportation of dangerous goods, vehicles are also equipped with emergency protection devices for tire blowouts. In the event of a sudden tire pressure loss, this device can keep the rim isolated from the ground, preventing the vehicle from losing control.

From braking to suspension, from structure to details, the safety configuration of single-compartment semi-trailers has formed a systematic solution. With the integration of Internet of Things (iot) technology, future vehicle models will also achieve intelligent functions such as remote diagnosis of braking performance and real-time early warning of suspension status, ensuring the safety of logistics transportation.