Have a good talk and be rational. Should the trailer hook of the Great Wall Gun be broken?

A few days ago, the Great Wall pickup truck responded to the "trailer hook" incident that had been raging on the Internet. The official said that the Great Wall pickup truck will actively assist users to properly handle damaged vehicles, and formulate an enhanced upgrade plan for trailer hooks for vehicles that have been sold, sold and in production. After the completion of the plan, the sold vehicles will be upgraded for free, and the sold vehicles will also be upgraded simultaneously. In addition, Great Wall pickup promises a lifetime free warranty for trailer hooks.

It took only a few days to make an official statement. Regarding the attitude of the Great Wall, both the video host and the public opinion have given positive comments. On the whole, the Great Wall's crisis public relations is commendable in terms of reaction time and attitude of "admitting mistakes".

Going back to the matter itself, there are different opinions about the explanation of the trailer hook incident. It is said that the video car has no reference manual, and the parts are damaged due to violent dragging; Some people say it is a product design problem. What is right and wrong? Today, let's talk rationally.

Use the drag-and-drop method in the manual

I want to talk about whether the video car is operated properly from two angles. First of all, it should be analyzed in combination with the official user manual. The user manual of the Great Wall Gun is not difficult to find. Open the Great Wall pickup truck and official website can download it directly. )

As shown in the figure, the official has clearly marked the use method of the trailer hook: when the vehicle is stuck, try to entrust the service provider, and it is forbidden to use the trailer hook, which is easy to damage the trailer hook and suspension; In case of emergency, you can't use a professional car to pull, but you can use a tow hook to pull at a low speed, but this method can only pull a short distance at a low speed on hard roads.

Judging from the user manual of the Great Wall Gun, the operation of the video car is indeed improper, and it is no wonder that some netizens blame the video party.

Talking about procrastination in a stressful way?

For some friends who have a self-driving or off-road foundation, it is also a common form to drag directly when the car is stuck.

The catapult trailer used in the video is a common way to get rid of difficulties in sand cross-country If normal dragging is used here, starting from scratch, stretching the rope straight and slowly exerting force, then the result is likely to be that both cars collapse.

But even if this method is common, there are some problems in the operation of two cars in the video. You can observe the picture. The front of the towed vehicle inclines upward. At this angle, even if the trailer hook has been dragged, it is difficult to get out of trouble.

Simply explaining this problem, the towed vehicle is in an upward position relative to the front of the towed vehicle. In this state, a downward pulling force must be formed to get the vehicle out of trouble, which is like a seesaw. To press it down, the force should be strong enough. However, the arm length on both sides of the seesaw is the same, the front of the video car is stuck in the upward position, the arms on both sides of the seesaw are uneven, and the trailer hook is still the short side of the seesaw, so it is difficult to get out of trouble.

When the front of the car is facing up, the trailer hook will receive a strong reaction force, and the connection point of the trailer hook will produce shear force, which is the subjective reason for the fracture of the trailer hook in the video.

In fact, when the front of the car is at an upward angle, the correct towing method should be a towing hook, so it will be relatively easy to get out of trouble if there is a downward pulling force.

At the same time, when ejecting and towing, a flag should be hung on the towing rope, so that even if the towing rope is broken or the towing hook is torn, the towing hook will not bounce up and be dangerous.

Let's start with the design point of the trailer hook of the Great Wall gun. During the previous test drive, my colleague mentioned that the trailer hook of the Great Wall Gun was too long.

The trailer hook of the Great Wall Gun is fixed on the longitudinal beam by welding. The length from the welding point to the bottom is really long, and the longer arm makes it easier to be damaged. However, this is only a superficial reason. In fact, I think that the fracture of the Great Wall gun trailer hook is caused by multiple reasons, and the unreasonable use of vehicles and traction mode is also one of the factors. However, even if the responsibility is not entirely his own, the official of Great Wall pickup truck still takes full responsibility, and its positive attitude in dealing with problems is worth learning from all China brands.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.