Simple wood board device suitable for wave velocity test
The utility model provides a simple wood board device suitable for wave velocity testing, and relates to the technical field of wave velocity testing devices.The simple wood board device comprises a testing wood board, a plurality of drill rods and nuts, the testing wood board is provided with a cou...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model provides a simple wood board device suitable for wave velocity testing, and relates to the technical field of wave velocity testing devices.The simple wood board device comprises a testing wood board, a plurality of drill rods and nuts, the testing wood board is provided with a coupling face and a pressure applying face which are opposite, the testing wood board is provided with a plurality of through holes, the through holes penetrate through the coupling face and the pressure applying face, and external threads are arranged on the outer wall of the first side of each drill rod; a spiral blade is arranged on the outer wall of the second side, a drill rod penetrates through the through hole, a drill bit of the drill rod and the spiral blade extend into the ground, a certain gap is formed between the drill rod and the through hole, and a nut is in threaded connection with an external thread of the drill rod and is attached to the pressure applying face of the testing wood board, so that the c |
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