Standard crane runway beams
The vertical and the horizontal wheel load on a crane runway beam is calculated according to EC1-3. The crane runways themselves are calculated according to EC3-6 (on the basis of DIN 4132), and they are assembled according to ISO 12488-1.
Since 1 July 2014, all metal components with a bearing function, which are destined to be used for buildings or civil constructions, must be provided with a CE label according to the standard EN 1090.
To be allowed to attach a CE label and the accompanying DOP (Declaration of Performance), one has to be in possession of an FPC (Factory Production Control) certificate. Within the framework of steel constructions, the FPC consists of a handbook that describes a system for applying continuous internal production process controls, in conformity with the requirements of the standard. A certification of the FPC system may only be carried out by a certified inspection institution. After a successful audit by the inspection institution TÜV Rheinland, DEMAN was awarded a welding and FPC certificate for the execution class 4 (EXC4), which conforms to the standard EN 1090-2. Since crane runway beams must fulfil the requirements of execution class 3 (EXC3), DEMAN disposes over the required certificates that allow it to produce and assemble such products. Why did we then go a step further, by obtaining certification for execution class 4? That made it possible for us to offer products, which conform to the specific quality requirements of our customers, for instance in the petrochemical and the nuclear sectors.
If you require more information on this, please take up contact with Matthieu Elebaut.
Types of crane runway beams
Crane runway beam section
The crane runway beam section of overhead cranes can consist of a rolled I-section, either with or without side reinforcements for supporting horizontal loads, an I-section that has been welded together or a box girder.
The same type of sections can be used for suspended cranes, however without a rail. For gantry cranes, we consult with the customer for making an optimized choice, according to the operating circumstances and crane use.
The possibilities include a rail that is welded onto an I-section, or an A-rail that is continuously or discontinuously clamped on top. We will provide you with data on the wheel loads, with which you carry out the stability study for the foundations.
The type of rail on the crane runway beam section is selected depending on the application: This can be a rail plate or an A-rail. The correct dimensions of these rails are also a part of our calculations.
Typical dimensions (W x H in mm) for this are:
- 50 x 30
- 60 x 40
- 70 x 50
These rails are professionally welded to the crane gantry section, using a discontinuous weld. The steel quality of these rails is S355.
These rails are used for larger wheel loads and/or in case of intense use of the overhead crane, such as for intensively used production overhead cranes, which may or may not be automated. They can be used for the rails on the overhead crane, namely for the trolley, as well as for the crane runway beam for the overhead crane.
- The construction form of this rail makes it possible to apply horizontally positioned guide wheels, instead of wheels with flanges.
- The underside has a slightly rounded shape, which means that a suitable, reinforced and elastic supporting mat must be foreseen on the runway section.
- A-rails are usually clamped at regular intervals to the runway profile.
- If the rails are welded to one another, using aluminothermic welding, then you will have a durable and reliable rail solution.
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