Connection anchor bolt with bidirectional expansion
The utility model relates to an expansion anchor bolt for fixing a heat-insulating material on a wall body, and aims at providing a connection anchor bolt with bidirectional expansion, which is capable of fixing a heat-insulating plate on a wall body without penetrating through the heat-insulating p...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model relates to an expansion anchor bolt for fixing a heat-insulating material on a wall body, and aims at providing a connection anchor bolt with bidirectional expansion, which is capable of fixing a heat-insulating plate on a wall body without penetrating through the heat-insulating plate. The connection anchor bolt disclosed by the utility model comprises a bolt rod (1), a first expansion sleeve (2) and a second expansion sleeve (3), wherein the bolt rod comprises a screw cap (12) and a screw rod (13), an expansion structure is formed on the first expansion sleeve, the bolt rod further comprises a connection rod (11) which is located at the other end, opposite to the screw rod, of the screw cap, a plurality of conical steps (111) are formed on the connection rod, a plurality of boss structures (34) which are correspondingly in conformal fit with the plurality of conical steps on the connection rod are formed on the inner wall of the second expansion sleeve, a press disc (31) is arranged at the |
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