Heavy truck, Liberation, Hongyan, Dongfeng who's center axis car is stronger


Since 2016, there have been some new changes in China’s policy on the sedan. The latest GB1589 has added the category of the center axle trailer. The maximum length of the entire vehicle is 22 meters, and the width of the vehicle is revised from 2.5 meters to 2.55 meters. In addition, starting from July 1 this year, double-row traffic will be completely banned.

With such a large adjustment in the situation of the sedan coach policy, what changes will occur in China's car-car product and what are the differences with foreign car carriers?

Before introducing China's cabs, Xiao Bian came to popularize the knowledge about the cabs.

Fully enclosed cab


Closed-container carriages can be divided into three types: open, fully enclosed, and semi-enclosed. The open carriage has only the basic support structure, which has the characteristics of light weight, low fuel consumption, and low cost. It is mainly used for short-distance transfer, and is currently used in many types in China.

The fully enclosed carriage has side panels and a top cover, which can well protect the loaded vehicles, but it has a large weight, fuel consumption, and cost, and is suitable for transporting expensive cars. The only side of the semi-open carriage is a skin, without a top cover, suitable for medium and long distance transportation.

From the structure can be divided into trailers and trailers in the axis. The area of ​​the trailer that carries the passenger car is located on a semi-trailer tractor towed by a tractor. The structure is simple but due to the long length, the turning is inconvenient.

The center axle trailer is a form of trailer, which is generally composed of a front main transport vehicle and a rear low-middle-shaft center axle transport trailer, and the front and rear vehicles are connected through a hook device. This trailer has a low chassis, a small turning radius, high transportation efficiency, and strong safety.

China's coaches started late and developed rapidly. So far, there are four models of heavy-duty trucks, Hongyan, Jiefang, and Dongfeng.

Heavy truck chassis car


China's first mid-axle carriage was built by China National Heavy Duty Truck and Raul. The total length of the carriage is 20.5 meters, which fully satisfies the requirements of the new GB1589 for the central axle trailer. The cab is designed with a low roof so that it can take full advantage of cab space to place a car. The car can transport 8-10 cars, and its loading capacity is stronger than that of traditional single-row carriages.

Heavy truck's mid-shaft passenger car top and rear trailer section are provided by Raul. The biggest highlight of the jacket is the application of the hydraulic system. There are levers on the side of the body; lifting the rocker by hydraulic pressure not only guarantees an accurate tilt angle, but also the speed of the loading and unloading truck makes full use of the loading space.

SAIC Hongyan chassis cabs


At this year's Beijing Auto Show, SAIC Red Rock’s red mid-axle carriage car has become a well-deserved eye-catching king. The biggest feature of Hongyan's center axle cab is the use of the Hongyan Jieshi flat-top cab. The height of the vehicle is only 2.67 meters. A cab can also be placed on the top of the cab. The car adopts a new technology of stacking device, which can accommodate 8-10 cars. The upper car can hold 5 cars and the lower can hold 4 cars.

Liberation of chassis trucks


The liberation of the central axis carriage was a flat-topped row of half cabs designed by the Fugui red coating, 2.8 meters above the ground, slightly higher than the Hongyan carriage. One of the characteristics of the liberation of the axis mounted on the carriage mounted double-color coating, the upper platform with white coating, the lower is a red coating. In addition, the levers on the side of the liberated carriage also have hydraulic control levers, which increase the speed of the truck.

Dongfeng chassis trolleys


Dongfeng combined with Tianjin Raul and other refitting plants launched its first mid-axle carriage. Dongfeng's carriages have been retrofitted with Dongfeng Tianjin's chassis and have been tilted to take full advantage of the loading space.

Throughout China's central axis car market, most products can carry 8-10 cars. The cab is mainly designed with a flat-top structure. Although the loading space is expanded, the sleeping berths are reduced by a lot, and at the same time, the cab is turned over. Maintenance has brought difficulties.

To understand the development situation of China's central axis car, we look at the development of foreign car.

In Europe, trailers are generally used for transport, and the vast majority of domestic stations are semi-trailers. The trailer can reduce the ground clearance of the vehicle body, increase the loading space, and achieve three-tier loading. European carriages generally use a two-tier structure, but there are also a few legal three-tier structures. The three-tiered structure of the carriages has a significantly higher loading capacity than two.

The three-layer carriage can adjust the height of each floor according to the hydraulic rod lift control. When the transported car body is low, the carriage can adopt a three-layer structure; when the body of the transport vehicle is high, the second layer platform can be completely lifted below the third layer platform, maximizing the space of the first layer platform. .

The three-layer carriages are not only foreign, but the product manual of CIMC 2007 has appeared on this product. However, due to the restrictions of China's policies and regulations, there are currently no three-layer carriages on the road. The carriages produced by Kässbohrer Transport Technology represent the highest level in Europe today. Its most outstanding carriage is a mid-axle trailer.

Central axis carriage truck main transporter


Kaisbauer's mid-axle carriages are divided into two parts: the main transporter and the central axle trailer. Because of its own power, the main transporter can also be used alone as a carriage. Compared with the domestic flat laying method, Kaisbauer uses a more space-saving upper and lower deck as loading area.

The main transporter can use the tank on the chassis or can use Kaisbauer's more optimized tank solution. Kasbauer's tank is designed behind the body side guards. This design can accommodate two side-by-side tanks and can provide more protection for the tank. However, due to the fact that China's retrofitting factories cannot modify the chassis arbitrarily, this design structure cannot yet be realized in China.

The trailer also uses the upper and lower decks as the loading area. The design ideas of the deck, pallets, and guardrails are also the same as those of the main transporter. The Kasbauer trailer is relatively compact, but it can still be loaded into five cars, with a height of no more than 4m.

The most outstanding technology of the Kasbau trolley is its hydraulically adjusted platform system. This system mainly consists of columns, decks and pallets. The main transport vehicles and trailers are equipped with hydraulically controlled vertical columns, and the front and rear columns can be controlled separately, so that the height control of the upper deck is very flexible, and parallel or inclined to the ground is not a problem, and loading and unloading vehicles is very convenient.

The length of the loading area of ​​the transporter is controlled by the deck. The hydraulically driven deck can extend forward or backward. It is not only used to adjust the length of the load zone, but also plays an important role in the loading and unloading process.

In addition, the Kaisbauer mid-axle carriage has humanized control layout, light weight, and flexible combination.

Overall, there is still a long way to go compared to the mid-axle carriages in China. In the future, with the increasingly fierce competition in China's car market, the true strength of the cab will be reflected in the operation, humanity, and flexibility of the hydraulic rod control system.

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