Crane ABC
When selecting an electric overhead travelling crane, there are a number of requirements to be taken into account.
The maximum weight of the load to be lifted combined with the actual usage of the crane (crane classification) is essential in getting the right crane for the right application.
The crane dimensions are tailored to the buildings, be it an existing or new building. Remarkable savings in building cost or optimal space utilization of an existing building can be achieved by specifying the span, available height and by selecting the correct crane design.
According to the span and the maximum load handling capacity, the crane steel structure is selected to be either a single or double girder crane construction. The design of the building structure determines if the best solution is top running or under running design. From the crane selection you can see that the CXT crane gives optimum hook approaches and when combined with the true lift of the CXT hoist you can utilise most of the available floor space.
In case you are handling long materials, like steel tubes and plates, the best solution is to have a crane with two hoists (and hooks) for better stability of the load ensuring safe lifting.
The basic control method of a crane is a push button control, which is suspended from it's own cable track allowing the operator to control the crane from any convenient position across the crane span. Even more flexibility can be gained by the use of a radio remote control.
The crane operating speeds are selected to allow safe operation whilst using the pendant. Dual operating speeds, normally a fast and slow speed with a ratio of 4:1 can be provided but for optimum control we strongly recommend a variable speed control system. This is achieved by utilising inverter technology that has been specially designed for crane use.
