Multi-condition one-step type concealed anchor agent anchor rod

By designing a multi-condition, one-step internal anchoring agent anchor rod, and using a rotating connection and locking device between thin and thick rods, the problem of inserting resin anchor rods into non-linear anchor holes is solved. This enables automatic lengthening and simplification of short and long anchor rod construction, reducing costs and precision requirements.

CN117328917BActive Publication Date: 2026-06-16RAILWAY CONSTR RES INST OF CHINA ACAD OF RAILWAY SCI CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
RAILWAY CONSTR RES INST OF CHINA ACAD OF RAILWAY SCI CO LTD
Filing Date
2023-11-02
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

In existing technologies, resin anchor bolts have the problem of difficulty in delivering the resin roll into place during construction, especially in non-linear anchor holes. Furthermore, existing self-drilling prestressed hollow anchor bolts with embedded resin cannot be applied in short anchor bolt construction scenarios.

⚗Method used

A multi-condition, one-step anchor bolt with embedded anchoring agent is designed. It adopts a first thick rod and a thin rod structure. The thin rod and the second thick rod are screwed out and connected by reverse rotation. Combined with locking and elastic components, the anchor bolt can be automatically extended and the construction can be simplified.

🎯Benefits of technology

It enables automatic lengthening of anchor bolts in both short and long anchor bolt construction conditions, simplifies construction procedures, and reduces anchor bolt manufacturing costs and processing precision requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a multi-working-condition one-step type anchor rod with a built-in anchoring agent, which comprises a first thick rod and a thin rod sleeved with a first end sleeve in the first thick rod, the first end of the thin rod is provided with a retreat-preventing piece for preventing the thin rod from exiting the first thick rod when being reversed; the second end of the thin rod is externally provided with a second thick rod, and the thin rod is internally provided with a clamping piece; when the second thick rod is reversely rotated, the thin rod is rotated out of the second thick rod and drives the first thick rod to reversely rotate; when the thin rod is rotated out to a position, the thin rod is connected with the second thick rod through the clamping piece, and at this time, the second thick rod drives the thin rod to synchronously forwardly rotate. The anchor rod can be applied to short anchor rod construction working conditions and long anchor rod construction working conditions, and when applied to the long anchor rod construction working conditions, the anchor rod can be automatically lengthened in the anchor rod drilling or rod inserting process without being manually lengthened through a connecting sleeve, the construction is simple, the process of connecting the connecting sleeve is saved, and the construction process is simplified.
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