Measuring drill rod for surveying and mapping
A measuring drill rod for surveying and mapping comprises a measuring drill rod body and a measuring drill rod support, and the measuring drill rod body is vertically installed in the center of the measuring drill rod support. The measuring drill rod body comprises a first telescopic rod, a second t...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | A measuring drill rod for surveying and mapping comprises a measuring drill rod body and a measuring drill rod support, and the measuring drill rod body is vertically installed in the center of the measuring drill rod support. The measuring drill rod body comprises a first telescopic rod, a second telescopic rod and an annular handle. The length of the measuring drill rod body is adjusted by the first telescopic rod and the second telescopic rod through a limiting button shaft. The measuring drill rod support comprises a base, telescopic legs and fine adjustment supporting legs, the lower endof the base is fixedly connected with three sets of telescopic legs, the fine adjustment supporting legs are arranged at the lower ends of the telescopic legs, each fine adjustment supporting leg comprises a fixed end, a fine adjustment column, a gear, a rack and a bottom supporting leg, and the length of each fine adjustment supporting leg is accurately adjusted through meshing of the gear and the rack. The height of the |
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