What surprises does the new national standard trailer challenge the extreme road conditions and the success of "the first consensus" to the industry?

On October 18th, the "Dream-seeking China" first challenge to the new national standard was successfully completed. On September 20, 3 groups (4 vehicles) of new national standard Trailers set off from Mengyin, Shandong, passing through cities such as Xi'an and Chengdu. The Yunnan-Tibet line entered Tibet, and after arriving in Lhasa, it returned to Mengyin, Shandong on October 18 via the Qinghai-Tibet line. It lasted nearly a month and the whole journey exceeded 10,000 kilometers.

The complete success of this event also means that the "first consensus" of the new national standard trailer was born.

Return of Glory, the first third-generation new national standard trailer to complete the ultimate test

The new national standard GB7258-2017 requires that from January 1, 2020, three-axle warehouse gates and balustrade semi-trailers must be equipped with disc brakes and air (airbag) suspension as standard. However, compared with the traditional leaf spring suspension, the air suspension is more expensive, and its performance and safety have not been recognized by card friends. Therefore, the current market share of the new national standard trailer products is relatively low, and the industry focuses on making new ones. There are not many companies with national standard trailer products.

It is understood that the annual output of warehouse gates and fence-type semi-trailers is about 200,000 to 300,000. There are more than 700 manufacturing enterprises in the country, but there may only be dozens of enterprises that make new national standard products and obtain sales. Among them, Shandong Shodailer Automobile Manufacturing Co., Ltd. is such a professional manufacturer of trailers.

Since its establishment in 2018, the company has focused on making new national standard products, and has now launched the third generation of new national standard trailers. In order to verify whether the new national standard trailers can meet the needs of customers in terms of safety and reliability, in late September, Shodailer Trailer launched the "Dream China" Shodailer New National Standard Challenge Extremity Tour.

This event has five characteristics of collectivity, authenticity, comprehensiveness, long-term nature and openness. Three groups (4 vehicles) of Shodailer trailers were loaded with different types of goods and experienced different tests.

Car No. 1 adopts the method of distribution along the way, pulling corn, dried noodles, magnesium chloride and other goods along the way, basically with uniform load. The trailer is equipped with Fuhua axles and Fuhua original airbags. It has the function of lifting the front axle, and can lift the front wheel when it is empty at high speed to save fuel consumption. This trailer is 13 meters long and has a dead weight of 6.4 tons.

It has a good anti-collision effect and is an all-round delivery model. Wang Qingran, a truck driver who has driven this car for a long time, said that this car uses air suspension, which is much better in comfort and reliability than the leaf spring suspension trailers that he used to drive before. The liquid retarder also performs very well in dealing with bad road conditions such as "72 turns".

The No. 2 car is a concentrated load, loaded with a steel coil weighing 29.61 tons, and deliberately loaded in the weak place of the goose neck of the girder, not the middle of the conventional one bridge and two bridges, just to test the girder of this trailer In this case, what kind of performance can be shown in the face of bad road conditions. The length of the No. 2 trailer is also 13 meters. The rear axle adopts Tianchi axle and is equipped with Kangmai maintenance-free wheels. It also has the function of lifting the front wheel. This trailer also adopts a lightweight design without reinforcement, and its own weight is only 5.7 tons. So, how does this car perform? Wang Hailong, who mainly drives this car, said: "It is a taboo to load steel coils in this stress position, but this car still ran for more than 10,000 kilometers, which was beyond my expectations. The road conditions there are particularly bad. Those who haven't been there can't understand it. This trailer with air suspension can complete this event under such conditions, which means that the new national standard products can withstand the test of harsh road conditions."

Car No. 3 is a set of trailers, which are very popular in today's coal transportation market. The weight of this car is not high, but the height is relatively high. The height of the two cars is about 4 meters, and the center of gravity is relatively high. Facing the undulating frozen soil sections of the Qinghai-Tibet line, the airbags of this car can effectively adjust the height of the chassis. Reduce the sway of the vehicle and reduce the risk of rollover. Zhang Liguo, who mainly drove the car, said that when passing through bumpy roads, the air bag of the car was constantly inflating and deflating, just like a spring, it was very comfortable to run and made people feel at ease.

"Shodailer Consensus" was born, and the new national standard semi-hanging technology is becoming more and more mature

Through the successful holding of this event, Shodailer Trailer has accumulated valuable experience and is willing to share it with the whole industry, and the "Shodailer Consensus" of the new national standard trailer was born.

According to reports, the "Shodailer Consensus" contains a total of 4 points.

After more than three years of technical upgrading, the new national standard semi-hanging technology is becoming more and more mature. The three sets of trailers participating in this event were developed by Shodailer Trailer in cooperation with 23 excellent suppliers. They selected three types of air suspensions, Guangdong Fuhua, Henan Fengbao and Anhui Tianchi, with different configurations. The goods it pulls include corn, dried noodles, magnesium chloride and other bulk cargo and 30-ton steel coils, as well as sub-mother cars, and there are axles equipped with Kangmai maintenance-free wheels. The product category is relatively rich, and the goods are also relatively diverse. In terms of road conditions, these three groups of trailers traveled through national highways, provincial highways and expressways, crossed the Qinling Mountains, challenged the extremely bad road conditions such as the 27-kilometer Kun-Mo expressway downhill, the Nujiang 72 turn, and crossed the US 308 National Highway and the 109 Qinghai-Tibet Line, and experienced long-distance washboard roads. , sharp turns, etc., but with the excellent shock absorption and excellent reliability of the air suspension, the cargo is safe throughout the journey. In the early days of the new national standard semi-hanger, the problems of airbag damage, guide arm fracture, and brake disc cracking did not occur.

Second, it is recommended that the main vehicle of the new national standard trailer be assembled with fluid slow. Among the three sets of trailers in this extreme challenge, only the sub-trailer with a load capacity of about 15 tons was not equipped with a hydraulic damper, and the other two vehicles were equipped with a fluid damper. The effect obtained is also very obvious.

After the long downhill, the three new models The average temperature of the brake disc of the national standard semi-mounted is about 65 degrees, while in the early test of the industry, the temperature of the brake disc is about 250 degrees, and the highest is about 350 degrees. Therefore, although the three senior card friends have taken auxiliary braking (exhaust braking, engine braking, etc.) A liquid buffer must be assembled.

Third, the new national standard trailer should be alert to the risk of rollover. Although the air suspension has better shock absorption than the leaf spring suspension, combined with the actual road test situation, Shodailer trailers still need to remind card users to pay attention to prevent the risk of rollover in advance when there is a significant height difference on the road, and at the same time It also reminds the domestic new national standard semi-Trailer Manufacturers to technically improve the driving stability of the new national standard semi-trailer.

Fourth, Shodailer's third-generation new national standard semi-trailer has high safety. Shodailer's third-generation new national standard semi-trailer has completed the challenge of extremely harsh road conditions and gained many fans along the way.

In addition, Shodailer Trailer has also launched a customized version of the new national standard semi-trailer in the industry according to the characteristics of vehicles in different regions in China, aiming at the road conditions in key regional markets such as plains, mountains, plateaus, Yunnan, Qinghai-Tibet, Xinjiang, and Northeast China. Solve the new national standard rollover, driving safety and other issues.

Gao Feng, chairman of Shodailer Trailer, said that air suspension has been used for decades in Europe and the United States and other countries and regions, and the technology is very mature. Shodailer held this extreme challenge event to let card friends experience it in person, so that card friends can trust the new national standard products and believe that the new national standard trailer technology is mature. At the same time, Shodailer is also willing to share its own experience and work with its peers to promote the development of this industry.