Dual-use small-scale concert hall

摘要

To make a floor of an indoor floor partly movable in order to make a step difference as a spectator seat as a thing to be used for a live house, a dance hall, a meal venue, etc., a simple power mechanism, a structure is also complicated Provide compatible small-scale concert hall that can be formed cheaply.SOLUTION: A first stage electric jack 24 is provided on a base frame 21 provided at the bottom of a pit 20 to vertically support an intermediate frame 22 so that a second stage electric jack 25 is mounted on an intermediate frame 22 The top frame 23 is vertically movably supported by the jack 25 of the second stage, the finishing floor base 26 is attached to the top frame 23, the rising portion 27 of the base frame 21 and the top A movable floor portion provided with a touch-preventing vertical frame 28 engaging with the hanging portion 29 of the frame 23 was provided on a part of the floor in the room.BACKGROUND OF THE INVENTION