Heavy-duty low-bed semi-trailers are often used for trailers that carry oversized and overweight cargo. So how to choose heavy-duty low-bed semi-trailers? Does the larger the configuration of the heavy-duty low-bed semi-trailer mean the better the quality?
In fact, when purchasing, we should pay attention to the details of the production. Generally, a good-quality low-flat semi-trailer will handle the details well. In addition, we need to comprehensively consider the technology and materials.
The basic form of a heavy trailer is a monocoque trailer. It generally has the following structure. Frame and axles The axles are mostly collinear, that is, there are two left and right axles on one axis, also called two axle rows. Common monocoque trailers have 2 to 7 axes. One wheel axle is equipped with 4 tires, and one axis has 8 tires. Therefore, the width of the whole car can reach more than 3 meters. In order to reduce the center of gravity of the whole vehicle, a steel wire radial wide rim tire with a small diameter and a large load capacity is generally installed. Each tire can withstand a load of about 4 tons under low-speed operating conditions. The frame adopts a welded structure of high-strength alloy steel box section. Usually a single 5-axle, two-axle flatbed trailer can carry more than 100 tons.
Pay attention to the following points when purchasing:
① The technical level of the trailer manufacturers The production technology of each manufacturer is different, from the design of the semi-trailer to the quality of the production equipment, and to the production experience of the production workers.
② The price of low-flat semi-trailer made of steel plate material is generally the lowest, and the price is at least 2,000 yuan cheaper than the other two steel plate materials. Don't be greedy for cheap when buying.
③ Details, the welding method of the traction plate, the traction plate currently designed. There are several small holes in the middle and all around, which can play a role in draining water and effectively prevent corrosion; the girders at the front goose neck are prone to breakage, so reinforcement plates are needed; suspension is an important load-bearing part , When welding, the weld must be full, and a suspension pad should be added under the suspension.
Pay attention to the above points, I believe you can definitely choose a heavy-duty low-bed semi-trailer with good quality and affordable price.
