Sling disc
A sling disc (also transparent disc or Kent disc , colloquially also turntable ) is used on ships, snow blowers and other "snowstorm capable vehicles" as well as formerly also steam locomotives to improve visibility in rain or spray . They are mainly to the windscreen and the viewing windows of the navigation bridge , cabs used and cabs. In addition to being used on vehicles, they are also used on machining centers and machine tools such as milling and turning machines.
functionality
The circular centrifugal disc, typically about 35 to 50 cm in diameter, is mounted in the center and is set in rotation by an electric motor , which is usually mounted outside the disc and connected to it by a shaft. The slinger is a frame having fold sealed or a (usually axially acting) lip seal to the field, in which it is mounted, towards. The storage must be able to absorb all influences from wind, hail and heavy rain.
The motor sets the disk in rapid rotation (approx. 1500 min −1 ); Due to the centrifugal force , splash water and rain are thrown outwards, which enables a continuously clear view to the outside. The panes can often be heated in order to prevent ice and condensation from sticking to the inside of the pane in extreme cold. The effect of centrifugal force also cleans the joint at the lip seal and the cylindrical gap around the rotating centrifugal disk.
In contrast to conventional windshield wipers , centrifugal discs are relatively low-maintenance, as there are less forces and no alternating loads. The drive shaft is protected on the clean side of the centrifugal disc.
The rain visor also works on the principle of the sling disc. B. in karting . It is driven by the wind.
Web links
Individual evidence
- ^ Rain visor ( Memento from December 16, 2014 in the Internet Archive )