A crane is actually a type of machine, mast or high structure that is used by ropes and pulleys to raise or lower objects. This device uses one or more simple machines to create a mechanical advantage and thus move loads beyond the natural ability of a human being. A crane is usually used in the transportation industry for loading and unloading or for moving objects.
Their application is mainly in the construction industry or other huge structures. Cranes used in the construction industry are often installed temporarily, and of course they can be installed on the ground or on special vehicles.
Cranes are controlled in two ways. In the first method, a user sits in the cabin that moves with the crane and controls the crane by buttons that are connected to the control station with a cable. In another method, the wireless control method is used. In any case, the mentioned operator is responsible for the safety of the crane and the lives of the people who work with the crane.
There are different types of cranes, each of which is used in specific operations depending on their type and application.
In general, a general classification can be provided, fixed and mobile cranes and overhead cranes.