Disc brake technology is an advanced technology that can greatly enhance the overall technical level and performance of vehicles. With the rapid growth of high-end heavy-duty card products such as hazardous chemicals transportation , cold chain transportation and high-speed express delivery in recent years, Also increasingly welcomed by the majority of users.
Valin's all-disc brake axle first entered the market in batches
Disc brake axle has three obvious technical advantages
Lu Jun, deputy general manager of Hualing Axle, told the author that the reason for the rapid popularity of disc brake axles lies in a series of obvious technical advantages and considerable economic benefits to users.
The first is high security. Mainly reflected in the brake torque than the drum type, brake efficiency can be increased by more than 30%, greatly reducing the braking distance. Whether it is for the occupants, the vehicle itself, or the safety of pedestrians and other vehicles is very meaningful.
The second is light weight. Taking the Hualing 6×4 tractor as an example, comparing Hualing’s own drum-type brake bridge with only one axle, it is possible to achieve a weight loss of about 100 kg, which is even more evident when compared with other competitive brands in China. Light 250-300 kg. All these are weight-based charges, and the economic benefits will be considerable. This is precisely what users value most.
The third is convenient maintenance. Since the brake lining is a wearing part, it needs to be replaced regularly. Drum brake friction plate is connected by rivets. When replacing the friction plate, rivets need to be disassembled and replaced. The maintenance man-hours are particularly long; and the disc brakes are relatively simple to install and connect the friction plates, just use a common spanner wrench. Easily remove the friction caliper on the caliper, can greatly reduce the man-hours, which is equivalent to improving attendance.
The promotion of full brake axles does not go smoothly
In 2012, GB7258-2012, which had a significant impact on the heavy-duty truck industry, was promulgated. This standard specifies the basic technical requirements for the safe operation of vehicles, such as complete vehicles and main assemblies, and safety protection devices. The contents of the auxiliary braking device must be installed on the vehicle, and the front axle rear axle should be the standard configuration of hazardous chemicals transportation vehicles. However, the full-disc brake (ie, the rear axle is also equipped with disc brakes) axle is still not mandatory. In Europe, full-size brake axles began to be widely promoted around 2005 and became standard.
The full-disc brake axle has the above-mentioned obvious technical advantages. The operating conditions of European heavy trucks are similar to those in China, but why is it not mandatory for promotion in China?
Lu Jun told the author that there are two main reasons that affect the promotion of the domestic full-disc brake axle: the first is the price factor. The price of a disc type rear axle is 2500-3000 yuan higher than that of the drum type. Take the 6×4 tractor as an example. If the axle is changed from full drum type to full disc type, only one axle is needed. The vehicle purchase cost of a complete vehicle will increase by around 10,000 yuan, which is enough to deter most customers.
The second is that there are no matching engine products with in-cylinder brake technology. In-cylinder braking technology is a highly regarded safety technology in developed countries in Europe and the United States. It is a standard on world-class heavy truck brands. However, this technology appeared relatively late in China. Until 2012, when Hualing's engine was introduced, it was the first time that this technology was introduced into China, making it possible to promote the development of a complete brake axle.
Disc brake mechanism
Why does the full-disc brake axle meet the in-cylinder brake technology?
Lu Jun said: "The main reason is that the brake discs are prone to high temperatures after prolonged braking, and the brake discs after high temperature should not be flooded with water. It is prone to cracking when the water is poured to disable the brakes and driving is very dangerous. The road conditions in China are very complicated. Inevitably encountered long slopes, steep slopes, if there is no cylinder brakes and other auxiliary braking technology, continuous braking for a long time, the damage to the brake disc will be very large, for the user is also an unbearable loss. On the other hand, if a disc brake axle is fitted with an engine with in-cylinder braking technology, the safety of the vehicle will be very high."
The trend is irreversible. Valin's all-disc brake axles are the first to enter the market in bulk.
As early as in 2008, Valin started the technology reserve and related test work for the front brake of the disc brakes. In 2011, the Hualing disc brake front axle was launched in bulk. The implementation of GB7258-2012 made Hualing see the development opportunities in disc brakes and rear axles. As a result, Valin started the technical reserve and related test work for the mid- and rear-axle disc brake axles in 2012. After more than two years of hard work, it was successfully developed at the end of 2014 and began to move toward the market. Since 2015, the company has taken the lead in mass market, and there have been nearly 100 units of dangerous goods transport vehicles in Jiangsu and Shandong markets equipped with Valin's full brake bridge.
Disc brake axle assembly
Valin full brake axle first to enter the market in bulk
The reason why Valin's all-disc brake axles can be introduced into the market in batches and favored, the maturity of its axle products is one aspect. Another important reason is that Valin is the first to have advanced, mature and reliable engine cylinders. Brake technology's own brand enterprises, so Hualing heavy truck is also called a heavy truck diamond combination by many users, which is enough to make Valin all-wheel brake bridge one step ahead and take the lead in the industry.
Lu Jun also said that the major obstacles that have hampered the promotion of full-scale brake axles have now been basically solved, such as: With the rapid expansion of production, the cost will be rapidly reduced and the promotion will be smoother; with full-wheel axles The matching in-cylinder brake technology, Valin, has taken the lead, and Hualing's Hanma engines are increasingly accepted by customers. Therefore, the promotion of Valin's all-wheel brake axle has now entered the fast lane, especially in the field of high-end logistics and transportation. Compared with other competing products in China, some have just started, some are still undergoing trials, and they still do not have the conditions for mass promotion to the market. It can be said that Valin has taken the initiative and has taken the initiative.
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