A precast pipe pile sealing device

By designing a precast pipe pile sealing device, and utilizing a combination of a swing cover and a limiting component, the problem of soil collapse inside the pile hole was solved, achieving rapid and reliable sealing and convenient assembly and disassembly, thus improving construction efficiency and pile quality.

CN224741644UActive Publication Date: 2026-09-11XIAMEN CONSTRUCTION ENGINEERING CO LTD OF CHINA RAILWAY FIRST GROUP +1
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Patent Information

Application Number
CN202521486887.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-16
Publication Date
2026-09-11
Estimated Expiration
2035-07-16

AI Technical Summary

Technical Problem

In the construction of existing prestressed concrete pipe piles, the soil inside the pile hole is prone to collapse and fall into the inner hole, which makes it difficult to clean the hole and affects the quality of concrete pouring. Traditional hole sealing methods have problems such as difficulty in disassembly or damage to the pile end.

Method used

A precast pipe pile sealing device was designed, including a sealing cover plate, a swing cover and a limiting component. The swing cover can be rotated to close or open the opening via a rotating shaft, and the limiting component is used to quickly lock or unlock the swing cover, enabling convenient assembly and disassembly.

Benefits of technology

It achieves rapid and reliable hole sealing, reduces the workload of hole cleaning, improves the quality of pile formation, and the device has a simple structure, is easy to process, is convenient to operate, and is suitable for repeated use.

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Abstract

This utility model discloses a sealing device for precast pipe piles, including a sealing cover plate, a swing cover, and limiting components. The sealing cover plate is disposed on the top of the precast pipe pile; an opening is formed on the sealing cover plate. The swing cover includes a cover body and a rotating shaft; the outline of the cover body matches the opening; both ends of the rotating shaft are connected to the edge of the opening to straddle the opening. The swing cover rotates around the rotating shaft to close or open the opening. Limiting components are disposed on both sides of the rotating shaft to lock or unlock the rotation state of the swing cover. During construction, the closed swing cover dynamically seals the inner hole of the pipe pile, preventing soil and rocks from falling into the inner hole of the pipe pile; before core grouting, the limiting components can be released to open the swing cover, achieving non-destructive and rapid disassembly. The sealing device balances sealing reliability and construction convenience, and has the advantages of simple structure and high turnover efficiency.
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