Fly system
A train as part of stage equipment in the theater is a lifting device which enables the stage technicians quick assembly and disassembly as well as the scenic exchange of decorations and technical devices. A train serves for vertical movement of the load between the stage floor and rigging loft.
Most trains suspended on ropes horizontal rods are adjustable in height. At the tie rods Stage Prospectuses and other decoration parts or lights can be attached. The pull ropes out on the gridiron over pulleys on the side of the stage area, where they are fastened together on a drive.
- 2.1 manual winch
- 2.2 Handkonterzug
- 2.3 Hydraulic drive
- 2.4 Electric motor drive
Point - and hoists
A distinction is made between point and prospectus trains.
Backdrop
A rigging system has several cable outlets, where a horizontal pull rod is attached to the load-bearing. Hoists are primarily used for hanging flat decoration - including the eponymous stage brochures that are to be hung parallel to the front edge of the stage. They are the construction of the theater trains which is most commonly installed.
The tie rod is usually so long that it covers the width of the product under her stage area. It is suspended (with exceptions) parallel to the front edge of the stage. Depending on the permissible load of the train, there is a rod from a round or square tube with about 50-60 mm in diameter or is built as a truss.
Several hoists are arranged above the stage at a distance of 30-50 cm from each other.
Point hoists
A hoist having only a single support means - for example a steel cable on which the load can be suspended. It is used when a non -surface load must be hanged. A chandelier, for example, only requires a single point of suspension so that a tie rod is not required. Point hoists can usually be set up variable to achieve the specifically required point on the stage. An alternative to point trains with steel cables represent chain hoists
Drive types
We distinguish between the following types of drives:
Hand winch
The tension cables are led on a winch and wound up there. It is driven by a hand crank. The trains with hand crank operation are suitable for very slow and therefore usually only for setting up and dismantling work.
Handkonterzug
→ Main article: Handkonterzug
The drive is done by hand by pulling on the Commando ropes. Since the load countered by counter-weights, so balanced, is an easier and faster operation is possible as with the hand crank. This type of train is frequently encountered in the theater, but it is gradually being replaced by mechanical propulsion.
Hydraulic drive
The pull ropes are attached to a hydraulic cylinder, which shuts down by retraction and extension of the train up or. The hydraulic absorbs the entire load, counterweights are no longer necessary. This drive can be integrated into a control system, allowing multiple trains can be operated simultaneously from a central control desk.
Electric motor drive
The hauling cables are guided in a cable drum which is driven by an electric motor. Also, this type of drive can be integrated into a control system.