| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete drilled powder recovery system capable of suitably sampling drilled powders by preventing mixing of impurities.SOLUTION: A concrete drilled powder recovery device 6 for recovering drilled powders of concrete drilled by using a hammer drill for holding a drill bit 3 having a dust suction passage 3e formed therein through the dust suction passage by the suction force of a suction device includes a base 12 having a flow passage formed therein, one end of the flow passage being connected to the dust suction passage and the other end being connected to the suction device to distribute the drilled powders, a storage base 15 connected to the midway of the flow passage, having a storage space 15c for storing the drilled powders distributed through the flow passage, and connected to the base, and a sliding member 13 slidably assembled to the base so as to traverse an upstream region and a downstream region respectively located on the upstream side and the downstream side of the storage case in the flow passage.SELECTED DRAWING: Figure 3 |
