A triaxial specimen preparation device with hierarchical limiting function

The triaxial sample preparation device with graded limiting function uses limiting discs and limiting rings to precisely control the moving endpoint of the hammer. Combined with the design of support pins and protective rings, it solves the problem of difficulty in accurately controlling the compaction thickness of soil in the existing technology, and realizes the accuracy and repeatability of test data.

CN224471372UActive Publication Date: 2026-07-07SHENZHEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN UNIV
Filing Date
2026-06-02
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In existing triaxial compression tests, it is difficult to accurately control the compaction thickness of each soil layer during the preparation of remolded soil samples, resulting in large operational errors and affecting the scientific validity and repeatability of the test data.

Method used

A triaxial sample preparation device with graded limiting function is adopted. Through the cooperation of limiting plate and limiting retaining ring, the movement endpoint of hammer head is precisely controlled. Combined with the design of support pin and protective sleeve, the compaction thickness of each layer of soil is precisely controlled, and a stable impact force is provided by sliding counterweight.

Benefits of technology

It improves the compaction thickness accuracy of each soil layer, reduces errors from manual visual observation and tape measure measurement, ensures the accuracy and repeatability of test data, and improves the adaptability and stability of the device.

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Abstract

The utility model relates to a three -axis sample preparation device with grading limiting function relates to geotechnical mechanics experimental equipment technical field, it includes with centering the lock base for fixed three -piece mould of clamping groove, with the tamping hammer subassembly for tamping treatment to soil material in three -piece mould of hammer head and with the limiting component for the limiting of hammer head moving path of limiting disc and is used to three -piece mould's direction of moving away or close, limiting disc is along the moving direction of hammer head and adjusts position and restricts the moving end position of hammer head in stages, tamping hammer subassembly still includes the guide rod for connecting hammer head of wearing in limiting disc and the limiting baffle ring of setting at the side of guide rod away from hammer head, limiting baffle ring and limiting disc abut and are used for the downstroke of rigid locking hammer head. The utility model has the effect that improves the precision of actual compaction thickness in compaction process.
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