| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a concrete vibrator capable of tamping down concrete into high quality by low frequency vibration without generating separation in the concrete, and fulfilling laborsaving and safety improvement. Ž<P>SOLUTION: The concrete vibrator 2 comprises a rubber tube 4 elastically deforming by contraction of the length in the longitudinal direction according to the expansion deformation in the radial direction, a front end cap 6 made of hard material which seals and clogs an opening of one end side of the rubber tube, a mouth piece 8 provided at the opening of the other end side of the rubber tube and having a coupler 9 for connecting a high-pressure air hose 10, a compressor 12 compressing air to be supplied into the rubber tube through the high-pressure air hose, and a supply exhaust valve 16 expansion-and-contraction-vibrating the rubber tube by supplying and exhausting the air to be supplied into the rubber tube in a predetermined cycle. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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