Sleeve for reverse fastening of bolt
The utility model discloses a sleeve for reversely fastening a bolt, and belongs to the technical field of steel structure connecting and fastening construction. The main sleeve (1) and the secondary sleeve (2) are fixed by welding; a through polygonal long hole matched with a nut is formed in the m...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
26.07.2024
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Subjects | |
Online Access | Get full text |
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Summary: | The utility model discloses a sleeve for reversely fastening a bolt, and belongs to the technical field of steel structure connecting and fastening construction. The main sleeve (1) and the secondary sleeve (2) are fixed by welding; a through polygonal long hole matched with a nut is formed in the main sleeve (1); one end of round steel of the secondary sleeve (2) is provided with a round hole of which the diameter is 1-2mm larger than the size of a bolt head, the other end of the round steel is provided with a rectangular hole matched with an electric torque wrench joint, and the round steel is provided with a radial through long round hole; the sum of the length of the main sleeve (1) and the length of the circular hole in the secondary sleeve (2) is 5-10 mm larger than the exposed length of the bolt. The nut reverse fastening device has the advantages that in reverse fastening construction of the steel structure nut, a manual wrench is not needed for fastening construction, the nut reverse fastening device |
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Bibliography: | Application Number: CN202322903355U |