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Why can't a semi-trailer pull a steel coil vertically? What do you need to pay attention to when pulling steel coil of semi-trailer?

Time:2022/4/26 11:32:17 Click on:1794 Source:Darong traffic machinery Co., LTD

Steel coil, also known as steel coil, has high strength, good toughness and a wide range of uses. It is indispensable for the manufacture of general engineering structures to automobiles, bridges and ships. However, it is not easy to transport steel coils from the factory to various demand points. According to the old saying in the freight industry: don't pull the steel coil if you die, don't pull the lvtong if you starve. So why does steel coil make Trailer owners so afraid?

为什么说“打死不拉钢卷”?半挂车拉钢卷需要注意什么?

This is because transporting steel coils is far more dangerous than ordinary goods. In general, the weight of a single bundle of steel coils can reach about 10t. If a vehicle is loaded with four or five bundles, the weight will be more than 50t, with a great risk factor. Especially in the case of emergency braking and sharp steering, it is easy to cause accidents under the action of inertia.

Besides, at this stage, the intensity of overload control is increasing. Ordinary trailers can only transport a bundle of steel coils at a time, so they don't make much money; Transportation is likely to be overloaded, which not only increases the risk factor, but also easy to be caught by the traffic police and face fines and other penalties.

Anyone who has seen the steel coil transport vehicle knows that the steel coil is generally placed with the arc downward and horizontally on the trailer, which is easy to roll forward or backward. In fact, there have been cases of accidents caused by the steel coil rolling forward and knocking over the cab during transportation.

为什么说“打死不拉钢卷”?半挂车拉钢卷需要注意什么?

Then why not put it vertically with the plane down? In fact, this is due to the consideration of loading and unloading and cargo damage:

1. The steel coil laid horizontally is more convenient for handling and loading and unloading.

With such a large weight, it is impossible to load and unload the steel coil by manpower. Large lifting tools must be used. When the steel coil is placed horizontally, the sling of the crane or the steel wire rope used for lifting and fixing can pass through the center of the steel coil to facilitate lifting and transportation. In contrast, if the steel coil is placed vertically, it will not only increase the time and cost of loading and unloading, but also affect the transportation efficiency.

2. Steel coils placed horizontally can reduce cargo damage.

Although the steel coil has large weight and good toughness, cargo damage will inevitably occur in the process of transportation. For example, when the vehicle passes through the pothole road section or deceleration belt, the edge of the steel coil rubs back and forth with the vehicle body, which will inevitably lead to edge wear, even edge deformation or damage. In particular, aluminum coil, cold-rolled steel coil or galvanized steel coil have high value. Even slight damage may lead to freight deduction.

If the steel coil is placed vertically at this time, once the bottom collides, the whole bundle of steel coils may be damaged. However, if the steel coil is placed horizontally, even if the bottom is damaged, it is only the steel coil in the outermost circle, which can greatly reduce the cargo damage.

为什么说“打死不拉钢卷”?半挂车拉钢卷需要注意什么?

Therefore, even if the car owners know that the steel coil is placed horizontally and easy to roll, they still choose this mode of transportation. How to ensure safety in transportation?

1. Add a thick wooden board or straw mat at the bottom of the steel coil to increase the friction between the steel coil and the car body, which can minimize the displacement of the steel coil.

2. Install triangle wood or wave plate that can block, and the height difference shall be as high as possible, which can block the steel coil at the moment of sliding.

3. Fix the steel coil with steel wire rope. Pay attention not to use ordinary rope. It is best to tighten it with hand hoist, which can play a better role in tightening and fixing than manual. After strapping, be sure to check it several times and be careful without fault.

4. Don't drive too fast, pay attention, use more defensive braking, try to avoid emergency braking, and don't turn sharply. When parking and resting, pay attention to check whether the triangle wood, wave plate and steel wire rope are loose. Once it is found to be loose, tighten it immediately.

5. Don't overload, don't drive tired. Remember Wuxi elevated rollover? Six steel coils are overloaded. In addition, don't drive tired. Even if the requirements of transportation timeliness are higher, safety is the most important. Don't put the cart before the horse.

为什么说“打死不拉钢卷”?半挂车拉钢卷需要注意什么?

In addition to these, we should also pay attention to one thing. Try not to transport the steel coil with a lightweight trailer, otherwise it is easy to cause beam or shaft breakage accidents. Especially for the rear axle of trailer chassis, try to choose those rear axles with strong load-bearing performance or special for heavy transportation. For example, the American axle or low flat axle under Darong group is made of high-strength alloy materials through "one-piece" heat treatment molding process. The thickness of axle beam, brake drum, brake pad and other parts are higher than that of ordinary axle. It is equipped with special bearings, oil seals and bolts for heavy trailers to ensure that the vehicle maintains good performance under high load. Although lightweight trailer accessories are a popular model at present, they are not suitable for heavy transportation. They should be selected according to the use needs.

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