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Semiautomatic hollow column soil sample making device

A technology for making hollow cylinders and devices, which is applied in the direction of measuring devices, test sample preparation, sampling, etc., which can solve problems such as low efficiency and affecting the quality of soil sample production, achieve good results, save energy and time, and uniform rotation speed Effect

Pending Publication Date: 2018-08-28
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most common dynamic loads that the soil bears are earthquake loads, vehicle loads, and wave loads, etc., and the stress paths of the soil under these loads are mostly complex stress paths involving the rotation of the principal stress axis. The hollow cylindrical torsional shear instrument (HCA ) is the most advanced geotechnical test equipment that can realize multiple complex stress paths including the rotation of the principal stress axis. The soil sample of this instrument is a hollow cylindrical soil sample. The quality of the soil sample directly affects the accuracy of the test results. At present Most of the cutting and drilling of hollow cylindrical soil samples are done manually, which takes a certain amount of time and energy from the test personnel. There are also human factors that affect the quality of soil samples, thus affecting the quality of soil samples and less efficient

Method used

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  • Semiautomatic hollow column soil sample making device

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 As shown, a semi-automatic hollow cylindrical soil sample production device includes a fixed cover plate 4, a soil cutting wire 5, a middle partition 24, a soil cutting wire knife holder, a tray 11, a first stepping motor 6, and a second stepping motor 9. The third stepper motor, PLC, the earth-taking cylinder 17, the first stepper motor 6, the second stepper motor 9, and the third stepper motor are connected to the PLC respectively;

[0021] There is a central through hole in the middle of the middle partition plate 24, and two parallel first chute 12s are arranged on both sides, and the side wall of the first chute 12 has a rack structure 10; The first bracket 16 installed directly and the beam 1 fixed on the top of the first bracket 16 are composed, and the fixed cover plate 4 is installed under the beam 1 through two bolts 2...

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Abstract

The invention discloses a semiautomatic hollow column soil sample making device and belongs to the field of related geotechnical engineering. The invention provides the semiautomatic hollow column soil sample making device which comprises a fixing cover plate, a soil cutting iron wire, a middle partition plate, a soil cutting iron wire holder, a tray, a first stepper motor, a second stepper motor,a third stepper motor, a PLC (Programmable Logic Controller), a soil taking cylinder, and the like, wherein the first stepper motor, the second stepper motor and the third stepper motor are all connected with the PLC; two ends of the soil cutting iron wire are connected with the soil cutting iron wire holder; the iron wire can be moved up and down automatically; the holder can also be moved forwards and backwards automatically; the tray is used for controlling the rotation of a soil sample to be cut; the soil taking cylinder can be moved up and down and rotated. As a semiautomatic device, thedevice is very simple and convenient to operate and high in soil taking precision, the time and the labor can be greatly saved for experiment operators, and the problem of devices for semiautomatic hollow column soil sample making can be solved.

Description

technical field [0001] The invention relates to a semi-automatic hollow cylindrical soil sample production device, which belongs to the related field of soil mechanical performance testing in geotechnical engineering. Background technique [0002] With the development of my country's economy, the society's demand for transportation continues to increase. However, land and ground resources are limited. Making full use of underground space and building submarine tunnels has become a new idea to solve the limited land and ground resources. However, it is necessary to do a good job in the development of underground space. The mechanical shape of the soil needs to be studied. The most common dynamic loads that the soil bears are earthquake loads, vehicle loads, and wave loads, etc., and the stress paths of the soil under these loads are mostly complex stress paths involving the rotation of the principal stress axis. The hollow cylindrical torsional shear instrument (HCA ) is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/286G01N2001/2873
Inventor 张天骄周建刘升升
Owner ZHEJIANG UNIV
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