How to distinguish between different types of semi-trailers?
Semitrailers are one of the main categories of trailers. They refer to trailers with axles positioned behind the center of gravity of the vehicle and equipped with coupling devices that transfer horizontal and vertical forces to the tractor. The semi trailer itself has no driving force, it needs to rely on the traction of the main car to achieve driving.
Semi-trailer transport has high comprehensive economic benefits, which can be improved by 30-50% compared with ordinary monomer type cars. It mainly uses goods for long-distance transport.
So, the common semi trailer can be divided into several kinds? How do you tell the difference between different types?
I. Classification according to the number of axles of semi-trailer:
Semitrailers are classified by axle, which can usually be divided into four categories: single axle, two axle, three axle and multiple axle.
Among them, the single axle semi trailer is the simplest semi trailer, which has the advantages of small repair quality, convenient manufacture, less tire wear and fuel consumption.
With the continuous development of logistics industry, owners' requirements for transportation efficiency are greatly improved, and the loading quality of semi-trailer is also relatively increased. In order not to exceed the provisions of axle load and total load, the main way is to increase the number of semi-trailer axles.
2.according to the structure characteristics of semi-trailer classification:
According to the structural characteristics, semi-trailers can be divided into variable wheelbase semi-trailers, semi-trailers whose axles can be lifted, multi-traction pin semi-trailers and movable traction pin semi-trailers.
A variable wheelbase semitrailer can be in the form of a wheel base moving relative to the semitrailer frame. The mass of J10BZ, J15BZ and J140BZ are 7t, 8t and 10t, respectively. The longeron can be retractable, and the length of the cargo box varies within 7 ~ 11m.
The axle can lift the semi-trailer. After lifting the axle, the adhesion conditions are changed to reduce the driving resistance and tire wear. However, the structure is complex, and its executive device is pneumatic or hydraulic components.
Multi - traction pin semi - trailer, generally have double traction pin and three traction pin type.
3. according to the form and use of semi-trailer classification
It can be divided into flat semi-trailer, low flat semi-trailer, concave flat semi-trailer, box semi-trailer, self-discharge semi-trailer, special container semi-trailer, container flat semi-trailer, container rail-plate semi-trailer, liquid tank semi-trailer, powder container semi-trailer, livestock and poultry semi-trailer, prefabricated parts semi-trailer, long cargo semi-trailer, refrigerated semi-trailer, transverse extension semi-trailer, longitudinal extension semi-trailer and combination semi-trailer Trailer, etc.
4.according to the semi-trailer driving mode classification
Can be divided into self - driven semi - trailer, other drive semi - trailer. Self-driven semi-trailers are driven by engines, which reduce the power of the tractor, thus reducing the size of the train and improving the running stability, mobility and economy. Other driving semitrailers are usually semitrailers that are not equipped with engines and transmission.
In all the parts of the semi-trailer, the role of the axle is very critical. The bearing, braking transmission and driving transmission of the semi-trailer rely on the axle to achieve. If the quality of the axle is not qualified, let alone the economic benefits, I am afraid that even the most basic safety requirements can not be realized.
DARO axle is the representative of the domestic time-honored trailer axle, is the first trailer axle R & D manufacturer stationed in Liangshan Quanpu Industrial Park more than 20 years ago, technology and strength are in the forefront of the industry. DARO axles are highly cost-effective compared with other products in the industry and have a high level of trust among the fleet and owners.
