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Novel resistance strain type earth pressure cell sensor

A resistance strain type, earth pressure cell technology, applied in the direction of instruments, measuring forces, measuring devices, etc., can solve the problems of complex calibration and low sensitivity

Inactive Publication Date: 2016-12-07
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In order to overcome the deficiencies of low sensitivity and complicated calibration of the existing resistance strain type earth pressure cell sensor, the present invention provides a new resistance strain type earth pressure cell sensor with high sensitivity and simple calibration

Method used

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  • Novel resistance strain type earth pressure cell sensor
  • Novel resistance strain type earth pressure cell sensor
  • Novel resistance strain type earth pressure cell sensor

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] refer to Figure 2 to Figure 5 , a novel resistance strain type earth pressure cell sensor, comprising an earth pressure cell side wall 3 and an earth pressure cell end cover 4, the earth pressure cell side wall 3 is fixed on the earth pressure end cover 4, and the earth pressure cell side One end of the wall 3 is provided with a force film 1, and the bottom surface of the force film 1 is provided with an annular resistance strain gauge 2. The sensor also includes an outer cover 7 and a rubber force transmission block 8. The side wall 3 of the earth pressure box is set on the The outer cover 7, the rubber force transmission block 8 is arranged between the bottom surface of the outer cover 7 and the force-receiving membrane 1 .

[0033] Further, the force-receiving membrane 1 is circular, and the rubber force transmission block 8 is a circular rubber block.

[...

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Abstract

A novel resistance strain type earth pressure cell sensor comprises an earth pressure cell side wall and an earth pressure cell end cover, wherein the earth pressure cell side wall is fixed to the earth pressure cell end cover, a stress film is arranged at one end of the earth pressure cell side wall, and an annular resistor strain gauge is arranged on the bottom surface of the stress film. The sensor further comprises an outer cover and a rubber force transmission block, wherein the earth pressure cell side wall is sleeved with the outer cover, and the rubber force transmission block is arranged between the bottom surface of the outer cover and the stress film. The novel resistance strain type earth pressure cell sensor is high in sensitivity and easy to calibrate.

Description

technical field [0001] The invention relates to the field of geotechnical engineering detection, in particular to a resistance strain type earth pressure cell sensor. Background technique [0002] As a sensor for measuring earth pressure, earth pressure cells mainly fall into three categories: resistance strain type, vibrating wire type, and fiber grating type, which are widely used in laboratories and various underground projects. The resistance strain earth pressure cell has the advantages of high sensitivity, simple structure, and small volume, and is more suitable for small-scale model tests or indoor model tests. The vibrating wire earth pressure cell has strong anti-interference ability and good stability, and is suitable for testing underground structures such as foundation pits, tunnels and dams. Due to its anti-electromagnetic interference, small size and high precision, the fiber grating earth pressure cell is widely used in large-scale geological engineering. ...

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Application Information

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IPC IPC(8): G01L1/22
CPCG01L1/22
Inventor 杨俊杰李升毛晓飞傅林峰周梦楚朱蓝燕
Owner ZHEJIANG UNIV OF TECH
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