Anchor bolt suitable for cracked concrete and earthquake load environment

By designing anchor bolts for screws, first fastening components and second fastening components, using a combined structure of tapered core and anti-slip sleeve, the problem of poor anchoring effect of existing anchor bolts in cracked concrete and seismic load environments is solved, achieving higher fixation stability and simple disassembly process.

CN119687082APending Publication Date: 2025-03-25BEIJING LITYOU ANCHORING TECH CO LTD
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Patent Information

Application Number
CN202510140315.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-08
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

Existing concrete mechanical anchor bolts are difficult to effectively anchor under cracked concrete and seismic load environments, and are difficult to disassemble.

Method used

An anchor bolt is designed including a screw, a first fastening member and a second fastening member. The second fastening member consists of a tapered core and an anti-slip sleeve. The anti-slip sleeve is limited by the tapered core, and when the screw rotates, the secondary fixation of the anti-slip sleeve is achieved through the displacement and extrusion of the first fastening member.

Benefits of technology

Improves the fixing effect of anchor bolts in cracked concrete and seismic load environments, enhances the durability and stability of anchor bolts, simplifies the disassembly process and reduces the risk of bolts being broken during disassembly.

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Abstract

The invention relates to the technical field of concrete mechanical anchor bolts, in particular to an anchor bolt suitable for cracked concrete and earthquake load environments, a main body assembly comprises a screw rod, a first fastening part and a second fastening part, and the first fastening part and the second fastening part are arranged on the outer wall of the screw rod in a sleeving mode; through the design of the taper core and the anti-skid sleeve, the anchor bolt can adapt to a hole, the applicability of the anchor bolt is improved, meanwhile, the fixing effect of the anchor bolt in the hole is enhanced through the design of the open groove in the anti-skid sleeve, the slope of the taper core and the anti-skid fish scale teeth on the expansion sleeve, the durability of the anchor bolt is improved, and the service life of the anchor bolt is prolonged. The anchor bolt can provide a more stable fixing effect in an earthquake load environment, the position can be better kept when the anchor bolt is vibrated, loosening or falling caused by vibration is reduced, lubricating oil is injected into the anchor bolt after the fixing head is taken down, the lubricating oil can be injected into the positions of the first fastening component and the second fastening component along the channels, and therefore the fixing effect is improved. Friction force between parts and between the parts and hole walls is effectively reduced.
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