Is the compliant low plate semi-trailer straight or high and low plate?
Low plate semi-trailer is a commonly used model in the domestic transportation industry, such as 17.5 large plate car, strictly speaking, it belongs to the low plate trailer. According to the requirements of regulations, low plate semi-trailer is specially used for large and non-removable heavy goods transportation, but in actual transportation, some owners often use it for general cargo transportation such as less-than-load, green pass, and even "what goods can pull, what money can earn", so that those owners of compliance run transportation love and hate.
According to the notice issued by the Ministry of Industry and Information Technology in 2007, the 17.5 big board car announcement was canceled, can not be reproduced or licensed, in accordance with the regulations, the last batch of 17.5 big board licensed will now also reach the scrap node, or will not be able to drive on the road.
Mountain rain has not arrived, the wind has been full of buildings, although the old model has not yet quit, the new model has taken over, such as the new "super" word face car or 13.75 large plate car.
According to the technical specifications given by the Ministry of Transport in March 2020, the longest low plate semi-trailer can be 13.75m, that is to say, 13.75 large board or will become a compliance "replacement" of 17.5 large board. In terms of quality parameters, the old standard requires a three-axis low plate preparation quality ≤10t, the new requirements are ≥42t, and the five-axis ≥55t. Compared with other types of semi-trailers, the loading capacity of low-plate semi-trailers is up to 140 square meters, which is much higher than the volume of standard van semi-trailers.
However, it should be noted that the 13.75 large plate car can only be used for the transportation of large and non-removable goods, that is to say, it is illegal for general cargo transportation, once the relevant departments improve the governance, such as "one more penalty four", many illegal vehicles or will be idle. It is suggested that the owners should still follow the law of industry development, and compliant transportation can be more conducive to the long-term development of the freight market.
Under normal circumstances, the structure of the low plate semi-trailer adopts a concave beam frame, that is, the front section is a gooseneck, the middle section is a cargo platform, the rear section is a wheel frame, and there is no fence plate around. Move the machinery from the rear wheel frame or remove the wheel during loading and unloading, and then attach the machinery to the semi-trailer.
This gooseneck type flatbed car can effectively reduce the center of gravity, which is convenient for the loading and unloading of goods, and can improve the stability of the vehicle and the passage of the road on the height limit. It is worth noting that the gooseneck part is not allowed to carry cargo.
In addition to this gooseneck type of flat car, many owners have also seen such a flat car as below, the body girder is flat, there is no gooseneck:
In fact, this model does not belong to the low plate semi-trailer, but the ordinary semi-trailer that is not installed, compared with the gooseneck low plate, its center of gravity is higher, the loading is smaller, and the same configuration can be cheap about 2000 yuan.
Due to the particularity of low plate semi-trailer in the application field, its various accessories are also different from ordinary semi-trailers.
Take DARO's low flat special trailer axle as an example, this trailer axle is significantly less than other axles in height off the ground:
The wall thickness of the shaft beam is also significantly higher than that of the ordinary trailer axle, and the higher the thickness, the higher the strength and the corresponding load-bearing performance:
In addition, brake drums, brake pads, bearings, bolts, etc., are also special for heavy-duty semi-trailers, but also to ensure its strength, toughness, wear resistance and other properties.
