Coal mine drilling rod verticality detector
A coal mine drilling rod verticality detector comprises a drilling rod and is characterized in that a balance rod is arranged on the upper end of the drilling rod, two sides of the balance rod are both provided with a weight, a level gauge is arranged on the middle of the balance rod, the balance of...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | A coal mine drilling rod verticality detector comprises a drilling rod and is characterized in that a balance rod is arranged on the upper end of the drilling rod, two sides of the balance rod are both provided with a weight, a level gauge is arranged on the middle of the balance rod, the balance of the balance rod is maintained by adjusting two weights, the levelness can be observed through the level gauge, and the detector is convenient. |
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