The classification of the semi trailer(1)

Dump semitrailer(semi trailer)
The dump semi-trailer is suitable for the transportation of bulk goods such as coal, ore and construction materials. Dump semi trailers can be divided into two categories according to their purposes: one is heavy and super heavy dump trailers for off-road transportation, which mainly undertake transportation tasks such as large mines and projects, and are usually used together with excavators. The other is light and medium-sized ordinary dump trailers for highway transportation, which are mainly used to transport loose goods such as sand, soil and coal, and are usually used together with loaders. 1. The carriage adopts rollover and backward dump, which can effectively improve the transportation efficiency of bulk bulk goods transported by the loader. 2. The frame and longitudinal beam of the carriage are welded with high-quality manganese plate, and the cargo box has dustpan and rectangle. It has high strength, strong lifting force, good stiffness and toughness, strong bearing capacity and no permanent deformation. 3. Sophisticated technology: the main components are processed by advanced equipment, the longitudinal beam is fully automatic submerged arc welded, and the assembly machine is used for accurate assembly of axle and leaf spring.

Low flat semitrailer(semi trailer)
The on-board part of low flat semi-trailer has no breast board and is widely used. It is mainly used for medium and long-distance freight transportation. The frame of series semi-trailer is of through beam structure, and the longitudinal beam adopts flat and movable gooseneck type. The web height is from 400mm to 550mm, the longitudinal beam is welded by automatic submerged arc welding, the frame is shot blasted, and the transverse beam penetrates into the longitudinal beam and is welded as a whole. It is composed of series dry plate spring and suspension support. It has reasonable structure and strong rigidity and strength. It is used to support load and slow impact. Low flat semi trailers are usually used to transport heavy vehicles (such as tractors, buses, special vehicles, etc.), rail vehicles, mining machines, forestry machines, agricultural machines (such as excavators, bulldozers, loaders, pavers, cranes, etc.) and other heavy goods. The lower the center of gravity, the better the stability and safety, The stronger the ability to transport ultra-high goods and pass overhead obstacles. The structure and loading of low flat panel semi-trailer usually adopt concave beam (or well) frame, that is, the front section of the frame is gooseneck (the traction pin of the front section of gooseneck is connected with the traction saddle on the tractor, and the rear end of gooseneck is connected with the semi-trailer frame), the middle section is cargo platform (the lowest part of the frame), and the rear end is wheel frame (including wheels). When loading the mechanical equipment on the low flat semi-trailer, the mechanical equipment 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 wheels are removed, and then the mechanical equipment is fixed on the semi-trailer. The walking structure of low flat plate semi-trailer is made of high-strength international steel, with light vehicle weight, and ensures its anti distortion, anti-seismic and anti bumping capacity to meet different road bearing capacity.

Bin grid semi-trailer
The warehouse grid semi-trailer is a semi-trailer designed with fence structure. It is mainly used for the transportation of agricultural and sideline products and other light goods. 1. The vehicle model and fence structure design process are reasonably designed in combination with the user's cargo category to fully reduce the weight of the carriage under load. The structure is simple and applicable, and the disassembly is convenient, so as to reduce the investment cost and create more profit value for the user. 2. Frame: a spatial frame structure composed of longitudinal beam and integral through beam. It can balance the strength, stiffness and toughness of the frame, with strong bearing capacity and no permanent deformation. 3. Series of bin grid semi-trailer frames are of through beam structure, and the longitudinal beam adopts flat type or gooseneck type. The web height is from 400 to 500, the longitudinal beam is welded by automatic submerged arc welding, the frame is shot blasted, and the transverse beam penetrates into the longitudinal beam and is welded as a whole. 4. Suspension system: new suspension system is adopted, with high strength and strong impact resistance; The load of each axle is balanced, and the angle of the system pull rod is reasonably designed. In the process of frequent bumps, it can reduce the friction and slip distance between the tire and the ground and effectively reduce the tire wear. At the same time, the pull rod can be adjusted to adjust the wheelbase and effectively avoid the phenomenon of partial running in and gnawing of the tire.