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Detailed classification and introduction of semi-trailers (a)

Apr 01, 2019

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Dump semi-trailer

Self-unloading semi trailer is suitable for the transportation of bulk and bulk cargo such as coal, ore and building materials. Dump semi-trailer can be divided into two categories according to its use: one is heavy and super heavy dump trailer used for off-highway transportation, which mainly undertakes transportation tasks such as large mines and projects, and is usually used in conjunction with excavators. Another type of light, medium and medium-sized common dump trailer used for highway transportation mainly undertakes the transportation of loose goods such as sand, clay and coal, which is usually used in conjunction with loaders. 1. Carriage rollover and back-turn self-unloading can effectively improve the efficiency of bulk bulk cargo transportation by loading and unloading machine. 2. The frame and the longitudinal beam of the carriage are welded with high-quality manganese plate, and the container has dustpan and rectangle. It has high strength, strong lifting force, good rigidity and toughness, strong bearing capacity and no permanent deformation. 3. Excellent technology: The main parts are processed by advanced equipment, the longitudinal beams are welded by fully automatic submerged arc welding, and the wheel axles and leaf springs are accurately assembled by assembling machine.

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Low flat trailer

The low-flat semi-trailer has no railings in its on-board parts and is widely used. It is mainly used for medium and long-distance freight transportation. The frame of series semi-trailer is beam-piercing structure, and the longitudinal beam is straight and movable gooseneck type. The web height ranges from 400 mm to 550 mm. The longitudinal beam is welded by automatic submerged arc welding. The frame is shot peening. It penetrates the longitudinal beam brightly and welds the whole body. Series dry leaf spring and suspension support are composed of reasonable structure, strong rigidity and strength, which are used to support load cushioning. Low-flat semi-trailer is usually used to transport heavy trucks (such as tractors, buses, special vehicles, etc.), railway vehicles, mining machinery, forestry machinery, agricultural machinery (such as excavators, bulldozers, loaders, pavers, cranes, etc.) and other heavy-duty goods. The lower the center of gravity, the better the stability and safety, the better the ability to transport super-high cargo and pass overhead obstacles. Strong. Low flat semi-trailer structure and loading low flat semi-trailer usually adopt concave beam (or well) frame. The front part of the frame is gooseneck (the traction pin of gooseneck front is connected with the traction saddle of the tractor, the back part of gooseneck is connected with the semi-trailer frame), the middle part is cargo platform (the lowest part of the frame), and the rear part is wheel frame (including wheels). When loading mechanical equipment on a low-flat semi-trailer, it is usually loaded from the rear end of the semi-trailer, that is, the mechanical equipment is moved from the rear wheel frame or the wheel is removed, and then the mechanical equipment is fixed on the semi-trailer. The walking structure of low-flat semi-trailer is made of high-strength international steel, which has light weight and guarantees its anti-distortion, anti-seismic, anti-turbulence and different road bearing capacity.