How should a highway be equipped with a wrecker?

First of all, we need to understand the structure, functions, and features of various types of wreckers. Wreckers according to the structure type is generally divided into supporting crane separation type, supporting hanging crane type, flat type, ordinary type four series. The lift-off separation type includes two types of rotation and non-rotation of the boom. Ordinary wreckers have been seldom ordered by customers due to their single function, and they are gradually being edged. Supporting cranes and lifting cranes are divided into light, medium and heavy types according to their working ability. The lifting and lifting type of wreckers generally only have the jib rotation for heavy vehicles, and the medium and light type cranes do not rotate. Flat-type wreckers are light-duty vehicles with only two tonnages, the 3 tonnage and the 5 ton.

The most obvious feature of the flat wrecker is that it can handle two faults, that is, it can clean up two fault/incident cars at one time, which is especially suitable when there are many light fault vehicles. However, its disadvantages are also obvious: First, there is no hoisting capacity. For faulty cars that slide out of the road, they can only be supported by other wreckers or cranes. Second, the speed of the flat plate's winch winding rope is slow, dragging the faulty car. The time spent on the flat plate is longer. Third, the support arm of the flatbed car is limited by the structure. When it is laid flat, it cannot be completely lowered to the ground. It can only be lowered to a negative angle to support the arm to extend and retract to lift the fault/accident. car. In this way, for some breakdown/accident vehicles with lower chassis, such as sports cars and some high-end cars, it is easy to bump the bumper of the faulty car when it is cleared, resulting in secondary damage to the fault/incident car.

The characteristics of lifting and separating cranes and lifting cranes are that they can both drag and lift, and the speed of lifting the vehicle is fast. When the supporting arm is laid flat, it can be completely lowered to the ground and will not touch the faulty vehicle. The bumper does not pose the risk of causing secondary damage to the vehicle.

There are various kinds of vehicles driving on the highway. Therefore, when purchasing a wrecker, you have to purchase a variety of different types of wreckers. Considering the tonnage, light, medium and heavy-duty wreckers should be installed. In general, wreckers can be classified into three categories according to tonnage: 8 tons are light vehicles, mainly 2 tons, 3 tons, 5 tons, 6 tons of several models; 8 tons to 20 tons of medium-sized cars, There are mainly 8 tons, 12 tons, 15 tons, 20 tons of several models; more than 20 tons of heavy vehicles, mainly 25 tons, 30 tons, 38 tons, 48 ​​tons, 50 tons, 60 tons of several models.

Highways are generally managed by traffic police brigade and traffic police squadron. A brigade administers a number of squadrons, and a squadron generally manages highway mileage of 30-60 kilometers. Each squadron has a wrecker, and one wrecker is generally equipped with 3 to 4 wreckers, one each for light, medium and heavy wreckers. What kind of model is suitable for light, medium and heavy vehicles? It must be considered comprehensively.

For the newly opened expressway, because the number of passing vehicles is still relatively small, the author believes that the basic configuration of a squadron should be a 3 ton carrier concentrator, an 8 ton carrier conjoined unit, and a 50-ton rotary car. Suspended models are most suitable. The 8-ton tow-hugging conjoined vehicle model has been able to hold ordinary bus models. There are not many models that are heavier than buses. When a breakdown/accident vehicle that is heavier than the bus appears, 50 tons of heavy-duty vehicles can be removed. It can guarantee 50 tons of wreckers have a certain attendance rate. It is a waste to have a car idle for a long time or low attendance. When the expressway is opened for a long time and there are a large number of vehicles, the squadron can add a 3-ton flat panel or a 5-ton flat panel accordingly. This will give full play to the advantages of the flat-bed model with one to two advantages and increase the smoothness of highways. Medium-sized vehicles can also be added when traffic is particularly busy.

If considering a group as a whole, I believe that at least one battalion should be equipped with a wrecker with a 60-ton rotating crane, deployed to a squadron, instead of a 50-ton rotating wrecker, and a 60-ton wrecker. The squadron, which is located in the middle of the expressway, is convenient to support the other two sides of the clearing squadron to deal with the special heavy-duty fault vehicles. In addition, each squadron should be equipped with a variety of models, for example, a squadron with 5 tons of light vehicles, a squadron with 12 tons or 15 tons of medium-sized vehicles, and a squadron with 38 tons of heavy vehicles. With a wealth of vehicle configuration as the basis, we can change the matching of various types of wreckers at any time according to the changes in the specific circumstances of each squadron. In this way, not only can save costs, but also optimize the allocation of resources, can better play the role of the wrecker quickly remove obstacles.

I have visited some highway squadrons and found that some of the squadron's wrecker configuration is not very reasonable. If any, the squadron is configured in such a way: a 3 ton carrier concentrator, a 30-ton rotary crane, and a 50 tons of rotating cranes. As the 30-ton wrecker has been able to clean most of the fault cars, the attendance of the 50-ton car has become very small. Such a configuration has caused 50-ton models to be often idle and wasteful. The 30-ton model may be prematurely scrapped due to high attendance. Moreover, a 30-ton rotary crane is much more expensive than an 8-ton or 15-ton carrier crane, so this configuration is unreasonable. The actual situation of the squadron is: Since the 30-ton model is equipped with the chassis of a domestic manufacturer, and the 50-ton model is equipped with a chassis of a well-known imported brand, the chassis of the 30-ton vehicle is more difficult to drive, particularly reflecting that the gear is not Hanging well, and driving comfort is not as good as a 50-ton wrecker, so wreckers are often more willing to drive a 50-ton imported brand chassis wrecker to remove obstacles, which in turn causes 30 tons of wreckers to sit idle. Of course, there are management issues here.

Another example is that some squadrons are configured in such a way: a 3 ton flatbed car, an 8 ton carrier hookup, and a 50 ton rotary crane. Because the expressway has just opened, there are not many vehicles. When a small fault vehicle appears, the wrecked person only has to drive the flatbed. When the faulty car is some of the lower fault cars mentioned above, such as a sports car and some high-end cars, the flatbed car cannot be lifted with the support arm. Then, the flatbed back is dragged and the faulty car is obviously pulled onto the flat panel. It is more time-consuming and labor-intensive than dragging with a supporting arm and therefore it is not welcomed by the disabled. Moreover, the price of a flatbed car is more expensive than a car with the same tonnage.

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