In cross-border mainline and multi condition freight transportation, the weight of goods fluctuates greatly, and vehicles often travel back and forth with heavy loads and empty loads. Ordinary fixed axle trailers land on multiple axles throughout the entire journey, and tire wear and high driving resistance during the empty phase push up fuel and accessory expenses. The lifting axle trailer can lift and lower the axle according to the load capacity, flexibly adjust the number of landing axles, and adapt to the transportation needs of empty and heavy switching. Nowadays, more and more overseas fleets are choosing it. Many purchasing customers have only heard that lifting the axle can reduce costs, but they are not familiar with the core advantages and correct operation methods. Improper use not only fails to achieve the cost saving effect, but also easily causes premature damage to the axle and suspension. Mastering the principles and driving skills of lifting the axle trailer can fully realize the value of cost reduction. The core advantage of upgrading bridge trailers is the flexibility to switch axle loads and adapt to road weight restrictions regulations in different countries. When driving under heavy loads, lower the lifting bridge, increase support points, share the weight of goods, reduce single axle loads, meet local axle load restrictions, avoid over limit fines, and broaden the upper limit of cargo transportation. When returning empty, raise the lift axle to reduce the number of tires in contact with the ground, decrease rolling resistance, directly reduce fuel consumption, and reduce continuous tire wear, extending tire service life. This is also the most intuitive cost saving point for lift axle trailers. In addition to fuel efficiency and wear reduction, the lifting bridge can also protect chassis components and reduce maintenance costs. Retract the axle in an unloaded state, and the suspension, leaf springs, and balance beams will no longer continue to withstand road impacts, reducing chassis stress caused by bumps and delaying the aging of steel plate rubber sleeves, balance axles, and axle bearings. When encountering potholes, steep slopes, and narrow bends, raising the lift bridge can also reduce the turning radius, lower the probability of tires scratching the road surface or shoulder, and improve vehicle passability, especially suitable for cross-border transportation routes with changing road conditions. To truly save money, it is necessary to control the operational details of switching between empty and heavy loads. After overloading and loading, confirm that the goods are evenly distributed, then lower the lifting bridge to ensure that the force on each axle is balanced. It is forbidden to drop the bridge under unbalanced load to avoid local overload damage to the axle. When returning empty, operate the axle lift on a flat road at low speed. Do not lift or lower the axle during high-speed driving, turning, or long downhill runs to prevent sudden changes in force from causing safety hazards. It is necessary to regularly inspect the air circuit, airbags, and lifting valves of the lifting bridge in daily life, check for any air leaks in the pipelines, and ensure that the lifting action is sensitive and reliable.
At the same time, it is important to recognize the applicable boundaries of the elevated bridge, as it may not be suitable for all scenarios. Continuous heavy load conditions in mining areas and gravel construction sites, frequent lifting and lowering can easily damage the air circuit and suspension, resulting in limited profits; Only when there is an imbalance in the volume of goods transported back and forth, with heavy loads on the outbound route and empty runs on the return route, can the value of the bridge be fully realized. When selecting procurement models, it is also necessary to consider the regulatory requirements of the target market, confirm the compliance standards for the landing and lifting states of the lifting bridge, and avoid restrictions on customs clearance and road travel.
Overall, enhancing the core value of bridge trailers is achieved through dynamic adjustment of axle load, balancing heavy load carrying capacity and energy-saving requirements under no-load conditions. Overseas fleets should combine their own freight structure, standardize lifting operations, regularly maintain the air circuit and suspension, fully utilize the fuel saving, tire protection, and compliance advantages of the lifting bridge, continuously reduce fuel and tire maintenance expenses, and improve the overall operational revenue of the fleet.
