| 摘要 |
A falling weight deflectometer (1). The falling weight deflectometer comprises a load plate (2) adapted to engage a test surface, a force transmission means (5) adapted to transmit a force to the load plate (2), a buffer means (19), and a weight (8, 9, 10) adapted to impact said force transmission means (5) via said buffer means (19) so as to provide a force to be transmitted to said load plate (2) via said force transmission means, a guide means (14, 20) for guiding said weight (8, 9,10) towards said force transmission means, and a lifting means for lifting said weight to a predetermined height above said force transmission means. The lifting means comprises an electric (15) motor driving a threaded spindle in 17 engagement with the weight (8, 9, 10). |
