A gas cushion-microvibration synergic demolding device and method for curing soil test pieces

By constructing a gas-lubricated interface between the inner wall of the mold and the specimen and coordinating with micro-vibration, the problem of damage to the solidified soil specimen during demolding was solved, achieving non-destructive demolding under low stress and improving the molding integrity of the specimen.

CN122192889APending Publication Date: 2026-06-12HUBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUBEI UNIV OF TECH
Filing Date
2026-04-17
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing technologies cannot avoid micro-damage to solidified soil specimens during demolding, especially under high viscosity or early curing conditions. Traditional rigid ejection methods are prone to top surface cracking, edge peeling, or sidewall tearing, while existing pneumatic demolding devices are prone to causing localized erosion damage to the bottom.

⚗Method used

An air cushion-micro-vibration coordinated demolding device is adopted. By constructing a uniform gas lubrication interface between the inner wall of the mold and the specimen, and combining it with low-amplitude micro-vibration to destroy the static friction of the interface, non-destructive demolding is achieved.

🎯Benefits of technology

This technology significantly reduces the mechanical ejection force required for demolding, avoids stress concentration, ensures specimen integrity, and provides a stable and reliable non-destructive demolding technique.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of air cushion-microvibration collaborative type demolding device and method for solidifying soil test piece, comprising: shell, top and bottom are open setting;Multiple hole air outlet piece, multiple hole air outlet piece is vent structure of microporous cross network, multiple hole air outlet piece is arranged in the shell inside ring, so that cavity is formed between shell and multiple hole air outlet piece, and shell and multiple hole air outlet piece are collectively used as mould side wall, wherein multiple hole air outlet piece is used as mould inner wall;Pier, it is set in shell bottom, and cavity is formed in the inside of pier and is connected with external gas supply structure, and cavity is communicated with cavity by annular air outlet channel located in the top of pier;Microvibration ejection structure, its output end passes through pier to the bottom of shell to support test piece.The application actively constructs the gas lubrication interface between mould and test piece in demolding stage, and cooperates low amplitude microvibration to destroy interface static friction, to realize the overall demolding of high viscosity or early solidification soil test piece under extremely low mechanical stress condition.
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