FIELD: mining.
SUBSTANCE: invention relates to the field of mining operations and, in particular, to the design of the expandable anchor bolt with the clamp indicator in the bore pit. Expandable anchor bolt is formed by expanding body. Its cross-section has a deformed shape with formation on the surface of at least one longitudinal groove. Ends of anchor bolt are equipped with covers with filling component on inlet side and end component on outlet side. Anchor bolt is provided with at least one clamp indicator. It is formed by a hollow tube which is made from elastically compressible material and is located on the wall of the divergent body. Along this wall the indicator is brought to the visible side. Note here that indicating medium is arranged at least in part of indicator tube inner space.
EFFECT: technical result is higher reliability of device.
9 cl, 20 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ANCHOR BOLT | 2004 |
|
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