Semi-trailers and their types
Semi-trailer is a trailer without the rear axle. Load of transported cargo by the method of partial loading is transferred to the tractor. Semi-trailers are often equipped ложементами, which is the front part of the semi-trailer (not only in сцепленном condition). They have a number of advantages compared to conventional trailers. For example, grip and release of the semi-trailer is fast enough that saves time Transporter at loading and unloading of the material. If a truck breaks down, the consignment may be transported to other Prime mover, there is no need to overload the load to another vehicle. With regard to hitch the trailer, then it is more maneuverable. Semi - very mobile device, they can be transported cargoes is quite large.
Semitrailers usually have two or three axes, they are often equipped with lifting axle, which reduces wear rubber unladen. Also semi-trailers have a certain classification, types.
Refrigerators - a special kind of semi-trailer with the freezing installation for transportation of cargo, perishable products, ice-cream, flowers, and soD.) and require a certain temperature. Vans often made of monolithic panels, or the usual frame vans, insulated foam (or other теплопроводным material).
Semitrailers the tank. This type semi-trailer is designed for transportation of liquid cargoes. For petroleum products used fuel truck or битумовоз, for liquefied natural gas - LNG carrier, for solid substances in liquid or powder materials - cement carrier, and so on. These semi-trailers are usually equipped with a special reservoir, which is made of a strong alloy steels. Equipment of these vehicles usually include: safety valves, filters, pump shut-off devices and other
Semitrailers MAZ. Plant MAZ produces not only a huge number of cars trucks or passenger, but also quite a lot of trailers of different kitting-up. Semitrailers MAZ are not self-propelled vehicles. This type of transport varies according to the type of suspension: pneumatic, spring; type of axes: one, two, three etc.; type of wheels: 4+1, 6+1 and other
These trailers can be of type: the van, flatbed semitrailer container carrier duty etc. Also in the complete set can be hard, tilt and isometric body.
Replaceable semi-trailers. Transportation of cargo of such trailers usually done only if the container technology cannot be applied, usually due to the specific characteristics of the goods or transport conditions. So, for loading and unloading works from the vehicle must be отцеплен semitrailer (or disconnect a wagon). If on a certain route runs only one vehicle with перецепкой in places where loading and unloading, semi-trailers shall be three (minimum). They are distributed as follows: first the loading, the second - on unloading, the third works together with the truck.
Semi must perform during one turn of the following steps:
- the uncoupling of the empty trailer and прицепка already loaded semi-trailer in the point of loading;
- автотягач moves with loaded semi-trailer;
- Laden tractor need to detach and attach a counterbalance to in paragraph unloading;
- автотягач moves with an empty trailer from the point of discharge to loading.
