Hydraulic engineering construction rock-soil sampling device and method

By designing a sampling device that includes a sampling column, a driving component, and a strip, and using a permanent magnet to push the soil at the edge of the gripper, the shortcomings of existing equipment in sampling accuracy and soil integrity preservation are solved, and high-precision and reliable soil sampling is achieved.

CN122589015APending Publication Date: 2026-08-18DEZHOU YELLOW RIVER CONSTR ENG CO LTD MAINTENANCE BRANCH
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Patent Information

Application Number
CN202610659625.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-14
Publication Date
2026-08-18

AI Technical Summary

Technical Problem

Existing soil sampling equipment has shortcomings in terms of sampling accuracy and preservation of soil integrity. Screw-type equipment causes soil mixing at different depths, while gripper-type equipment increases sample density and cannot truly reflect porosity and permeability.

Method used

The sampling device includes a base, a lifting mechanism, and a sampling execution mechanism. The sampling execution mechanism consists of a sampling column, a drive assembly, and an insert. The insert moves outward during the clamping process, using the attraction of a permanent magnet to push the soil at the edge of the clamp. Combined with a servo motor and ball screw transmission, the sampling depth is precisely controlled.

Benefits of technology

It improves sampling accuracy, maintains soil density and porosity, ensures the reliability of test data, avoids soil contamination at different depths, and the lifting mechanism is precisely controlled to prevent deviation during the sampling process.

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Abstract

The application discloses a kind of water conservancy construction geotechnical sampling device and method, it is related to soil detection sampling technical field, including base, lifting mechanism, sampling execution mechanism;Sampling execution mechanism includes sampling column, drive assembly and inlay strip, sampling jaw;Drive assembly is used to drive sampling jaw swing;Inlay strip can be moved to outside relative to sampling jaw, to extrude soil at the edge of sampling jaw to outside displacement.The application in the process of jaw convergence, adjacent permanent magnet on inlay strip attract each other, drive inlay strip to move to outside.This action will be extruded soil at the edge of jaw to outside shear, displacement, so that disturbed soil is located at the outside of sampling jaw.Finally, the sample left in the inside of sampling jaw is substantially not subjected to lateral extrusion force, so as to maintain the original density, porosity and permeability of soil, ensure the reliability of detection data, reduce edge soil extrusion, maintain the physical properties of sample as is.
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