How to reinforce the common open welding points of the standard box rollover semi-trailer?

The most common and most troublesome problem for self-unloading semi-hangers is some small problems that need to be repaired after welding.

Many car owners report that the most common welding positions for rollovers are as follows:

1. The hanging door handle of the door leaf, here traditionally, the hoisted round tube handle is directly welded to the door leaf tube. Because the length of the round tube is short and the square tube arm of the door leaf is thin, the contact surface during welding is thus less. It directly leads to the unreliable welding, and the instantaneous impact force of opening the door during the later unloading is easy to crack here.

Still facing recurrence of this issue after fixing it. For this reason, after repeated consideration of the problem reported by users, the designer first welded an equal-length thickened iron plate below this position, and then welded the door handle round tube on it.

In this way, the welding surface is enlarged, so that it is not easy to penetrate the square tube, and a small iron plate is placed on the top of the round tube, so that the original can not be welded to a multi-layer reinforcement. Effectively solve this problem.

On the other hand, the method to solve the welding problem here is not very technical, just pay special attention when welding, and use more snacks to solve the user's worries.

2. At the connection between the bottom plate and the sub-frame, the bottom plate is the main contact surface for carrying goods. As a car owner said, I never thought that I would also pull scrap iron, wood, pallets in addition to sand and gravel when I bought the car. Bags of grain and other goods.

Therefore, the bottom plate has undergone a series of light goods, thrown goods, welding and deformation have become commonplace. Therefore, the three-dimensional reinforcement of the triangular plate is used for the connection between the bottom plate and the co-pilot during production. important.

3. The flip bracket corresponding to each oil cylinder needs to be reinforced, and this position is the support point for the inversion of the carriage.

When all the goods are lifted until all the weight is concentrated here before unloading, so this position should not be reduced due to excessive pursuit of light weight, but additional reinforcement is required. , three three-dimensional three-dimensional reinforcement. This can effectively prevent the impact from all directions during the unloading process.

4. It is said that the support of the displacement cylinder cannot be obtained by turning the bracket. Generally, it is composed of casting earrings and two square tubes or channel steel. Personally, I prefer to use the combination of square tube and casting earrings.

If you consider light-weight channel steel, you can weld a steel plate of equal width and length on one side of the channel opening to increase its compressive strength. This can effectively avoid the reaction force when the top is lifted from bending the top.