Do I have to choose the whole slab main beam when buying a single beam crane?

Many people want to know whether to buy a single girder crane must choose the whole slab main girder. In fact, in the current single girder crane market, slightly larger manufacturers will use the whole slab to make the main girder. Is it really good to use the whole slab as the main girder? What's so good about it? To clarify this issue, we must know the original method of making the main girder of the single-girder crane. Comparing the two will see the difference? What are the pros and cons?

Compared with the whole plate main beam, the other method is to connect the main beam with U-shaped grooves. Manufacturers generally use 1000mm or 1240mm long U-shaped grooves to weld to the length required by the user. The height of the U-shaped groove is based on the prefabricated single-beam crane. The length of the main girder must be calculated, that is, the larger the span, the longer the main girder, and the higher the U-shaped groove box. This has been done by all manufacturers for decades. The whole-slab main girder that has emerged in recent years can be understood as Three long whole plates are welded together.

The second advantage is that it is not easy to deform. Most people don’t know that the main girder of a single-beam crane that looks like a "one" is actually not horizontal. According to the relevant standards of special equipment, the main girder has an upward camber of (1/1000～1.4/1000)S. The traditional method is to use the heating method. Let the main girder of the formed single-beam crane be in the range of camber, and use the whole slab as the main beam. The camber can be preset during the CNC blanking. The camber of the crane can be compared to the one made by the heating method. The obvious advantage is that it is not easy to deform.

In summary, we know that the main girder of a single-beam crane is of course better to be made of a whole slab.