Soft rock strength test needle penetration device and use method thereof

A technology of strength testing and penetration, which is applied in the direction of measuring device, strength characteristics, and the use of stable tension/pressure to test the strength of materials, etc. It can solve problems such as uneven penetration rate, broken needles, improper operation, etc., and achieve the overall structure Small and beautiful, prolong service life, easy to carry effect

Active Publication Date: 2021-10-01
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the artificial loading process of the traditional needle penetrometer, there will be uneven penetration rate, inaccurate manual readings, resulting in unreliable experimental data, or improper operation, excessive force, and excessive penetration, which will cause the needle to break. Phenomenon

Method used

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  • Soft rock strength test needle penetration device and use method thereof
  • Soft rock strength test needle penetration device and use method thereof
  • Soft rock strength test needle penetration device and use method thereof

Examples

Experimental program
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Embodiment 1

[0048] Embodiment 1: as Figure 1-18 As shown, a soft rock strength test needle penetration device includes a loading chamber 2 and a penetration chamber 4; the loading chamber 2 is used to provide power through the motor 2-8, and the driving gear set 2-6 drives the threaded rod 2-5 The downward / upward movement realizes loading / unloading; the penetrating chamber 4 is used for loading / unloading through the loading chamber 2, and then drives the penetrating needle 4-5 to enter / exit the rock.

[0049] Further, it can be set that the loading bin 2 includes a metal casing 2-1 and a threaded rod 2-5 installed in the metal casing 2-1, a gear set 2-6, and a motor 2-8, and the gear set 2-6 includes gears Ⅰ2-6-1, gear Ⅱ2-6-2; among them, the output shaft of the motor 2-8 is fixed by welding / keyway matching, etc. to fix the gear Ⅱ2-6-2, and the external teeth of the gear Ⅱ2-6-2 are connected with the gear Ⅰ2-6 -1 The external teeth are meshed, the threaded rod 2-5 passes through the cen...

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PUM

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Abstract

The invention discloses a soft rock strength test needle penetration device and a use method thereof. The soft rock strength test needle penetration device comprises a loading bin used for providing power through a motor and driving a gear set to drive a threaded rod to move downwards / upwards; and a penetration bin used for driving a penetration needle to enter into / exit from the rock. The use method comprises the steps of: checking the whole equipment; starting an intelligent numerical control device; holding a shell with salient points by a single hand, aligning a penetration bin hole with a test rock surface, pressing a loading key downwards to enter a loading mode, and meanwhile, enabling a linear displacement sensor and a piezoelectric pressure sensor to start to work; converting data collected by the linear displacement sensor and the piezoelectric pressure sensor into digital signals through a converter, transmitting the digital signals to a control main board, and driving a display screen by the control main board to display the data; and after loading is stopped, pulling a square buckle back to a sliding groove, and pressing a recovery key downwards to enter an unloading mode until the data of the display screen return to zero. For soft rocks which are difficult to prepare standard indoor samples, the soft rock strength test needle penetration device can be used for carrying out in-situ tests to test the uniaxial compressive strength of the soft rocks.

Description

technical field [0001] The invention relates to a penetrating device for a soft rock strength test needle and a method for using the same, belonging to the technical field of geotechnical engineering detection. Background technique [0002] As an important mechanical index of soft rock, uniaxial compressive strength is of great significance to the study of soft rock stability. However, due to the low strength and loose structure of soft rock, it is often difficult to process it into standard specimens. It is tested by indoor uniaxial testing equipment. get the uniaxial compressive strength. A needle penetrometer, which is convenient and quick to test the strength of soft rock in the field, has been introduced in the industry to test its penetration volume and force, and calculate its uniaxial compressive strength through empirical formulas. However, during the artificial loading process of the traditional needle penetrometer, there will be uneven penetration rate, inaccurat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0019G01N2203/0252
Inventor 董家兴杨润学郭永发赵毅然沈桢洛周伦顺殷洪波丁文云刘正初李贵民杨进京
Owner KUNMING UNIV OF SCI & TECH
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