Purpose
The manually operated Electro-Drive Fly Bars are used to vertically move theatre scenery items, cinema projection screens, sound reflectors, lighting fixtures etc –with overall weight in proportion to the system’s payload. The nominal load is determined per model ranging from 150Kg to 650 Kg. Lifting velocity ranges from 0,15 m/sec to 1,2 m/sec
Technical Description
The mechanism is based on the principle of electro-drive hoists. An electric gear box rotates a coil system upon which wire ropes are wound up transferring motion through pulleys to the suspension bar of the accessories. Engineering and electronic security systems prevent the dislocation of wire ropes for any reason, not even in case of a crash accident.
Stage Fly bars comprise the following components:
1. Engine Block / 2. Head pulleys system / 3.Suspension Pulleys system / 4.Accessories Suspension bar / 5 Wire ropes / 6.Stretching wire ropes system / 7.Loading accessories / 8.Safety limit switches / 9. Automation panels, PLC Software, Inverters etc. / 10. Mechanism complimentary (screws, nuts, conical, spring washers, emergency stops, safety bolts, stretching system etc.).
The panel is connected with cables with the console which is mobile, portable and covers the entire stage and backstage area. The console has a screen through which the operator has the potential to regulate the motion parameters of each mechanism (minimal & maximum velocity, deceleration time etc). To start the system there are: (1) a JOYSTICK of DEATHMAN type (for upward and downward movement) and (2) a safety button (mushroom) with an EMERGENCY STOP. Velocity of movements is regulated through the software program from the touch screen. When the mechanism reaches its preselected upper or lower position, movement toward that direction stops. In addition, the mechanism is immobilized when some safety limit switch is actuated. When the mechanism stops operating, the brakes are also actuated to keep the mechanism to its position.
1 The model TESS – SCENERY FLY BARS is an electro-drive system used to lift scenery items (Manual / Automated). Τhe scenery items are suspended to a simple or two-part metal bar, depending on the load, stage width and number of wire ropes. They work either individually or in a concerted way according to a directing program.
2 The model TESC – PROJECTION SCREEN FLY BAR is an electro-drive mechanism used to lift the screen system (Manual). The projection material is fixed to a metallic two-part frame. Dimensions are in proportion to the stage.
3 The model TESL – LIGHTING FLY BAR is an electro drive mechanism used to lift and supply power to the theatre lighting fixtures (Manual). In its individual parts, the simple fly bar TESL 250 also has: a) a cable-collection bin, made of strong material with dimensions big enough to store cables and chains, b) fabric-repulsive bumpers to keep fabric curtains, screens and scenery far enough from spotlights.