For drivers who are often engaged in long-distance transportation, it is not unfamiliar to the shower device. In particular, most of the semi-trailer trucks that operate in the southern China are equipped with a shower device . The road conditions in the south are more complicated. There are more road sections in mountainous areas, and there are many curves and slopes. Frequent braking is required during driving, and the high temperature generated by long-term braking will cause thermal attenuation of the braking system. In severe cases, it will lead to brake failure and lead to tragedy. After using the water sprayer, the driver can spray water to the brake drum according to the actual situation, lower the temperature, and reduce the chance of heat attenuation to a certain extent. Due to the low cost of purchase, the water sprayer has become a semi-hung link in China. The "magic weapon" of the chariot driver in the mountains.
Trucks that use a shower at high speeds
"Fortune" or "killer"
In fact, this "magic weapon" of the water shower has long been included in the blacklist of road transport security, and it has been hailed as the "invisible killer" of road transport security. When we drive at high speed, we often see two long water marks on the carriageway of a semi-trailer on a downhill section. We also see white water vapor rising along with the vehicles. It is like "Tengyun fog and fog" in general, the picture is very beautiful and ethereal. As everyone knows, this water mark is good in the summer and will soon evaporate. On the fall and winter season, the temperature in the mountains in the north and high altitudes is very low. The water mark caused by this water spray is very easy to icy and it runs on it. Just like on the ice, the grip of the tire becomes smaller and the degree of danger can be imagined. Therefore, we can often see a warning sign that sprays are strictly prohibited on high speeds, but it is difficult for many long-distance trucks to effectively limit them.
In addition, most of the existing spray tanks are installed on the girders of trucks, and many trailers can carry one ton of water in the tanks, causing some problems. The first is the impact on the girder. Although the tank is large, there are only a few connecting points on the girder. Trucks that often go on bumpy roads can easily be torn by gushing water tanks. The next is the problem of self-respect. We all know that in recent years, The intensity of overpowering is obviously increasing. Truck manufacturers are now advocating lightweight vehicles. Then adding a few hundred kilograms of water to a ton of water tanks becomes a "sweet" burden. After the cancellation, there is no guarantee for the safety of the next slope. , not to cancel a ton to be wasted in such a seemingly backward device; and in the brake hub water may also cause the hub of the rupture, because many domestic wheel technology is not in place, suddenly received cold water after the temperature is too high The shower will burst and affect the service life.
"Magic" or "forceless"
In the end, the water purifier is a “magic weapon†or a last resort. The used drivers actually have the most profound experience. Driving on a high-speed road often entails worrying about adding water, which is also a very troublesome task. Many drivers do not want to change, but it is difficult to find a suitable alternative. Products. At present, there are many auxiliary brakes on the market that have gradually received everyone's attention and recognition, but the promotion is still very difficult, such as engine exhaust brake, this device has actually existed for many years, but the effect is poor, and the quality is great. Sometimes there are mechanical accidents rushing against the exhaust gas cushion. Experienced drivers generally remove it after receiving the car. Some time ago, the China Truck Network reporter also recommended the FCB auxiliary brake for Xichai Engine. The system is also very effective, but it is rare to know him but it is limited to the engine model and it is difficult to obtain widespread popularity. In the early days, there were eddy current retarders widely used on passenger cars, but the total mass of trucks Far larger than passenger cars, this requires that the eddy current retarder has very powerful power, the effect of small power braking is not good, and the problem of excessive heat dissipation is still difficult to solve, so no climate is formed among trucks.
According to the reporter of the China Trucking Network, the most suitable alternative to the water sprayer is in fact the existence of the hydraulic retarder. This is a device widely used in Europe in recent years. It is basically used in heavy-duty semi-trailers and large passenger cars. Both are equipped with hydraulic retarder type. This device is installed behind the gearbox, small size, very light weight, hydraulic shaft through the deceleration, only acting on the drivetrain, there is no excessive engine speed requirements, release power, through the engine water circulation heat, you can Keep the engine temperature at the best use temperature, maintain the best cooling effect of the engine, and operate under the best conditions. However, the hydraulic retarder must be installed with the gearbox. Simply installing the retarder is troublesome. The rear cover of the transmission needs to be modified and the gearbox manufacturer needs to support it. In this way, the problem has arisen again.
Hydraulic retarder
Fortunately, Fast , a giant in the domestic transmission industry, has developed a hydraulic retarder suitable for the Chinese market. Nowadays, most domestic heavy-duty truck brands have products equipped with Fast transmissions. Fast Rex hydraulic retarders have a tremendous advantage in domestic promotion, and can also solve the user's gearbox and slow speed. The degree of matching of the device. However, many users also feel that the installation of retarder is very expensive. For this reason, Fast has calculated the account for the user. For transport vehicles that often travel on mountain roads, they use Fast Retarder annual savings. The cost is close to 30,000 yuan, which means that the cost of installing a hydraulic retarder can be saved in less than a year; for long-distance transport users, it will also save more than 10,000 yuan per year. In other words, the cost of purchasing a hydraulic retarder will be quickly saved from the cost of use. It does not have to worry about the frequent need to add water to the shower, and it also adds a guarantee for safety. Recently, Fast Reactor has successfully signed 215 orders with Yangzhou Shengda Special Vehicle Co., Ltd., and Fast has taken a crucial step in the promotion of domestic hydraulic retarders.
The cost of using the retarder versus the cost of not using the retarder
Chinese truck network reporters have contacted one owner retarder is installed, now mainly engaged in logistics and distribution as Jingdong, high transport efficiency requirements, when it comes to hydraulic retarder, he does not like Absolutely. He also told reporters that when he received a new car, the technicians at the service station who had done the driving training had said to him about the hydraulic retarder: In normal times, the deceleration must use the auxiliary brake because the main brake (brake) is used. For parking and life-saving, this sentence is still fresh in the memory of the owner. It is terribly scary to be “stopping to stay alive than running†while driving. Saying farewell to the shower is not only responsible for its own safety, but also contributing to road safety.
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