Special chock for galleries
The utility model relates to a special bracket for a tunnel, which comprises a top beam, wherein, the two ends of the top beam are hinged with side wall protecting plates through draw rods which are hinged; support rods are hinged under the two sides of the top beam, and a support cylinder is inclin...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The utility model relates to a special bracket for a tunnel, which comprises a top beam, wherein, the two ends of the top beam are hinged with side wall protecting plates through draw rods which are hinged; support rods are hinged under the two sides of the top beam, and a support cylinder is inclined to be butted with the support rods and the side wall protecting plates. The utility model which has the advantages of good mechanical performance, high bearing capacity, good stability for the bracket can keep the end of a stope stable and can keep the tunnel in a mining pressure influence area stable. |
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