Educational Institution: Cherkassk State Technological University Project description: The purpose of this work is a visual demonstration of structure and operation principles of a tower crane. Structurally, the crane represents a system of trusses. In the absence of drawings, quite a lot of time was spent on creating the given model. Careful visual observation of a crane structure at the construction site nearest to the house allowed the author to maintain proportions of individual modules with respect to each other and, overall, of the entire model of the crane. The motion of a cable lifting the load was specified via the variable denoting the displacement along one of the coordinate axes. The crane displacement along the rail track was specified with the help of another variable.