| 摘要 |
PURPOSE:To check vibrations in an impeller and the drive unit, by forming a hollow receptacle to be concentric with a rotary shaft at the moving part and providing this receptacle with the plural number of spherical weights inside. CONSTITUTION:A support body 3 consists of an adapter plate part 3a with setting holes in which a motor 2 is set up, a suspension frame 3b extending radially from the square part of this adapter plate part and a spring 3c acting as an elastic body inserted in position between the end part of this suspension frame and an outer frame 1, and is attached to the stud projected from the outer frame 1 with a threaded nut. At the peripheral part of an impeller 4, a circular vibro-isolating device 5 is installed, which is composed of a hollow receptacle 6 made up to be concentric with a rotary shaft 2a and the plural number of spherical weights 7 housed movable at will inside the receptacle 6. |
