| 摘要 |
PROBLEM TO BE SOLVED: To provide a dynamic load testing device which allows a shape of an acceleration waveform obtained as a result of a test to be obtained as a smooth curve and is capable of reducing the probability of unsuccessful testing.SOLUTION: A stop mechanism for suddenly stopping an accelerated thread 20 comprises a plurality of linear stop members 40 which extend in a direction of horizontal both sides facing the front of the thread 20 and are arranged side by side in a longitudinal direction and have both ends releasable from sealed states and, in response to successive collisions therewith of the front of the thread 20, are plastically deformed while absorbing an impact force of the collisions to have both ends released from the sealed states. In the front of the thread 20, a projection 22 which collides with each stop member 40 in a position nearer to the center than to both side end parts 21 of the thread 20 before a simultaneous collision with each stop member 40 of both side end parts 21 is provided. |
