After the flat dump semi trailer is withdrawn from the market due to the modification of GB7258-2017, the short distance transportation of sand and stone materials is mainly composed of two types of vehicles: rollover dump trailer and backward rollover dump trailer.

Due to the uneven quality levels of the dump semi-trailer on the market, many drivers who bought the dump semi-trailer in the early stage have cracked to varying degrees, or even rolled over.

SUNSKY VEHICLE recently introduced a new rollover dump semitrailer that will better solve the above problems. As the fifth upgrade of SUNSKY VEHICLE dump semitrailer, the new SUNSKY VEHICLE flip dump semitrailer has made new optimization in strength upgrade, structure optimization, wear resistance and other aspects, creating a dump semitrailer that is more resistant to manufacturing and less maintenance in a real sense.

▎ dump semitrailer cracks are very common

In 2019, the SUNSKY VEHICLE team conducted market research on rollover and rollover dump trailer products, and visited sand and stone construction sites in Shandong and Hebei successively. This visit surprised the whole technical team.

"We looked at a lot of vehicles, we saw a lot of distorted frames, we saw a lot of cracked panels, almost no dump semitrailers that weren't a problem." The person in charge of the technology department of SUNSKY VEHICLE, which led the team to investigate, revealed that a boss in Shandong bought one, and it took less than six months to overhaul the beam cracking for three times.

There is a dump trailer in Hebei, after a year of use the trailer plate cracked, the owner of the car every time to pad a steel plate inside the body.

After communicating with many drivers, they found that cracking is common in the semi-hanging of self-unloading, which is also the biggest problem that bothers drivers the most.

Can we build a self-unloading semi trailer that does not crack and is more resistant to construction and maintenance?

After the inspection, the SUNSKY VEHICLE dump truck technical team has been thinking about this problem.

▎ Three main causes of dump trailer cracking

After more than two months of research, the SUNSKY VEHICLE team did not rush to start the dump semi-trailer project, but started to sort out and analyze it.

After several rounds of discussion by the team, they sorted out the three main reasons for the dump trailer cracking.

First, the structural design is unreasonable. Many trailer factories based on the original plate dump, bin bar semi design, do not consider the back and roll dump trailer condition and stress. Because of the oil cylinder lifting, the stress and bearing capacity of the box plate, the bottom plate and the diagonal support have changed greatly, resulting in the cracking at the connection of the box plate and the bottom plate.

The second is to reduce the cost of accessories on the "jerry-built". In order to reduce the cost, many trailer factories use ordinary steel and manganese steel in the frame and body, and some vehicle auxiliary beams even use 2.5mm ordinary steel, which greatly weakens the bearing capacity and wear resistance. The use of inferior cylinder, cylinder oil seepage is very common.

Third, the operation is not humanized. When the tractor is separated from the main dump semi-trailer, the gas leakage of the hose leads to the inflating of the towed vehicle several minutes in advance, which affects the operation efficiency.

▎SUNSKY VEHICLE dump trailer is the first design in five industries

Faced with the above problems, the SUNSKY VEHICLE team carried out targeted development and all-round innovation in parts selection, structural design, stress analysis and other aspects.

In the early stage of the new product design, the SUNSKY VEHICLE dump truck team has always emphasized: do not pay attention to one-time purchase cost, to calculate the cost of the whole life cycle, to make a real driver more attendance, less maintenance and more resistant to manufacturing dump semi-trailer.

With this design concept, the team visited mainstream suppliers in China and selected the best accessories to create a more cost-effective product with the best technology. In May this year, after a year of tackling key problems, four rounds of product improvement were carried out after listening to the opinions of drivers, business managers and auto trade, and the first rollover dump trailer of SUNSKY VEHICLE was finally finalized.

Compared with the existing dump semitrailer on the market, the SUNSKY VEHICLE rollover dump semitrailer has been greatly improved in five aspects.

First, electrophoresis + duster process is used for the first dump semi-trailer, which not only saves energy and environmental protection, but also further enhances product quality and prolonging product service life.

Second, it is the first one to make adaptive adjustment for the structure and stress of dump trailer. The SUNSKY VEHICLE rolleover dump trailer has changed the cracking caused by the current local stress and made the frame under the overall stress, realizing a number of original technological breakthroughs.

Third, each process to do more than 30 minutes, the industry's first use of standardized, modular welding process. Through the station decomposition, the weld length, weld position and reservation were standardized for the first time to ensure the penetration of each vehicle.

Fourth, 100% of the vehicle is made of full-thickness wear-resistant steel, the bottom plate is not hot rolled, and the extruded cold steel is used for the first time. Compared with existing similar products, it is more wear-resistant and leather-resistant.

Fifth, the selection of flexible hose leakage, hanging on the tractor can run.

"Under the same weight, more resistant than similar products, under the same resistance, lighter weight than similar products." This is the concept of SUNSKY VEHICLE dump truck. The SUNSKY VEHICLE rear dump trailer will also be more and more popular, which will bring more surprises to drivers.