Parting Curtain System:-
moving Centre-Parting Curtain System comprises
of machine made curtain rails, Nylon Roller
fitted curtain trolleys and curtain drive
mechanisom. Curtain rails are fixed at
appropriate height on the Stage in such
a way that rail and trolleys are not visible
from the auditorium floor.
Drive mechanism comprises 3 phase motor,
speed reduction non-reversing worm wheel
gearbox and rope drum assembly. Drive
mechanism is of high efficiency so as
to require minimum power to operate. Rope
drum is parabolic type with tension and
divertor pulleys at either end. Motor
is totally enclosed. Fan cooled, 415 V,
3 phase, 50Hz AC of Siemens make.
Drive uses stranded steel wire rope of
4 mm dia. Tension and Diverter pulley
uses steel iron pulleys fitted with Ball
bearings on machined and ground shaft.
All parts are Zinc plated and passivated
to withstand vagaries of weather.
trolleys are made of steel fitted with
Nylon Rollers having Brass Roller Bushes.
Master trolley has number of rollers so
that it has smooth and steady movement
even when steel wire rope is fixed on
it, and it is used to pull half the curtain.
type Limit switches are fitted on the
curtain rail. An actuator on the Master
trolley actuates the limit switches in
curtain open and closed position. This
type of arrangement ensures that curtain
operates positively within limits and
no ambiguity occurs in its operation.
system is of sturdy design. Main Curtain
is made of Fire Retardant Velvet Cloth
and is very heavy, weighing 100’s
of kg; therefore, the entire system mechanism
is strongly built using best of engineering