Automatic Rubber Ball Drop Apparatus for the Test of Floor Impact Sound Insulation Performance

摘要

According to the present invention, a support housing having a predetermined height; An extension arm having one end fixed to the support housing and the other end positioned at a predetermined height outside the support housing; A first pulley installed at the other end of the extension arm; A second pulley installed on the support housing or the extension arm at a predetermined interval from the first pulley; A rotation motor that is fixed to the support housing and capable of generating rotational power in one direction; A rotating body whose inner surface is fixedly coupled to the rotating shaft of the rotating motor so as to be interlocked with each other; A rotating rod having one end supported at the center of the outer surface of the rotating body to be freely rotated; A wire having one side connected and fixed to the other end of the rotating rod, and the other side supported through the first pulley and the second pulley so as to move up and down in the direction of gravity; A rubber ball fixedly installed at the other end of the wire; And a rotating rod operating unit installed between the rotating body and the rotating shaft of the rotating motor to constrain the rotating rod so as to be interlocked with the rotating body and then release the restraint from the rotating body at a predetermined angle. A rubber ball automatic dropping device for measuring impact sound blocking performance is provided. According to this, the repetitive free fall of the rubber ball is automatically enabled at a certain height, so that the manpower for free fall of the rubber ball and the fatigue of the manpower can be minimized.