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Tractor truck's structure

Views: 0     Author: Site Editor     Publish Time: 2022-10-24      Origin: Site

A tractor is a general large truck or semi-trailer that is pulled by tools between the front and the trunk, that is, the front of the vehicle can be separated from the original trunk and pull other trunk, and the trunk can also be separated from the original trunk and pulled by other trunk. The front car with driving ability is called a tractor, and the rear car without driving ability is called a trailer, which is towed by a tractor. There are two ways to connect a tractor and a trailer: the first is that the front half of the trailer is placed on the traction saddle above the rear section of the tractor, and the bridge behind the tractor bears part of the weight of the trailer, which is called a semi-trailer; The second type is that the front end of the trailer is connected to the rear end of the tractor. The tractor only provides forward pulling force to drag the trailer, but does not bear the downward weight of the trailer. This is called full trailer.

It is often used for the transportation of large quantities of goods in or between workshops, such as the transportation from the warehouse of automobile manufacturing industry to the assembly line, and the baggage transportation at the airport.SHACMAN commercial tractor trailer cost

Tractor truck structure

Tractor truck background

With the rapid development of China's economy and the country's great investment in highway construction, highway transportation has become the main mode of transportation in China. As the main equipment of highway transportation, semi-trailer tractor is widely used for its advantages of strong specialization, large loading capacity and fast transportation. The fifth wheel is the connecting device between the tractor head and the semi-trailer. Although it is not a very complex and attractive component, it is the most important safety equipment of a semi-trailer tractor. If the operation is wrong or the maintenance is improper, serious safety accidents may be caused.

Tractor truck type

According to whether the support can move, it can be divided into fixed type, mobile type and lifting type. The left and right supports of the fixed traction seat are fastened to the traction seat base by bolts, and the base of the traction seat is then fixed to the girder of the tractor. Fixed type is the most widely used one. There are many styles of mobile traction seat, and the structure is almost the same as that of fixed traction seat. The main reason is that the connection between the traction seat base and the tractor beam adopts porous or toothed design. The base of the traction seat can be moved forward and backward according to the need to connect the trailer, so as to smoothly connect with different trailers. Some mobile traction seats are also equipped with automatic air pressure control device, which can push the traction seat forward and backward in the chute through air pressure. The lifting traction seat is mainly used on tractors at port terminals. The traction seat can move up and down in a certain range to adapt to semi trailers of different heights.

According to different degrees of freedom, there are single degrees of freedom and double degrees of freedom. Single degree of freedom traction seat is also called single axle traction seat. It can only make a longitudinal tilt of about 80. This kind of traction seat has high driving stability and is suitable for semi-trailer with high speed, light load and high center of gravity running on better roads. The disadvantage is that the frame can not swing laterally, so the torque borne by the frame is large. Double freedom traction seat is also called double axle traction seat. It can swing laterally and longitudinally, and can protect the frame of heavy transport tractor under different road conditions. Generally, the double axle traction seat is much higher than the single axle traction seat, and its lateral stability is poor when the vehicle is turning at high speed. Therefore, this type of traction seat is less used in ordinary highway transportation.

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