CN102135458A - Strain beam type soil pressure sensor - Google Patents
Strain beam type soil pressure sensor Download PDFInfo
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- CN102135458A CN102135458A CN 201010614532 CN201010614532A CN102135458A CN 102135458 A CN102135458 A CN 102135458A CN 201010614532 CN201010614532 CN 201010614532 CN 201010614532 A CN201010614532 A CN 201010614532A CN 102135458 A CN102135458 A CN 102135458A
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- soil pressure
- elastic beam
- transmission shaft
- pressure sensor
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Abstract
The invention provides a strain beam type soil pressure sensor comprising a hollow shell and a cover plate for sealing the shell, wherein the internal chamber of the shell is internally provided with an elastic beam and a transmission shaft; a circle of steps that extend upwards are arranged at the bottom of the shell; the elastic beam is arranged on the steps; the upper surface and the lower surface of the elastic beam are provided with resistance strain gauges with the same resistance and terminal boards that are matched with the resistance strain gauges; the resistance strain gauges are connected with one another by conducting wires so as to form a Wheatstone bridge that is connected with a strain gauge by a connecting wire; the shell is provided with a through hole that can allow the connecting wire to pass out; the transmission shaft is arranged between the elastic beam and the cover plate; one end of the transmission shaft is contacted with the cover plate; and the other end of the transmission shaft is contacted with the elastic beam. The strain beam type soil pressure sensor has the advantages of being applicable to soil pressure measurement on the soil of various stiffness, and being capable of eliminating the temperature influence.
Description
Technical field
What the present invention relates to is the pressure detection field, is strain beam type soil pressure sensor exactly.
Technical background
The soil pressure force measurement is an importance of soil mechanics theory and experimental study, also is the important content in the engineering test, and existing soil pressure cell can not record actual soil pressure value well.Remove outside the data distortion that the influence of various factors in the soil makes that soil pressure cell records, soil pressure cell is from the principle aspect deficiency being arranged also.Existing diaphragm type soil pressure cell includes and offers the flexible sheet that concave surface forms in box body, lid and the box body, realizes the soil pressure force measurement by the resistance strain gage that is covered with on the flexible sheet.The structure of this soil pressure cell makes it be only applicable to the measurement of full flexible load, and is not too suitable to the load that certain rigidity is arranged.But the rigidity of the soil body is normally between rigidity and flexibility, therefore this soil pressure sensor timing signal in water is very accurate, and when measuring soil pressure, usually produce than mistake, when especially measuring the bigger soil body soil pressure of rigidity, the result is not ideal.
Summary of the invention
For overcoming the above-mentioned shortcoming of prior art, the invention provides a kind of strain beam type soil pressure sensor that can be applicable to various rigidity soil body soil pressures measurements and can get rid of temperature effect.
Strain beam type soil pressure sensor, the cover plate that comprises hollow housing and closure casing, be provided with elastic beam and force transmission shaft in the inner chamber of described housing, the bottom of described housing is provided with the upwardly extending step of a circle, and described elastic beam is set up on the described step;
The upper and lower surface of described elastic beam be equipped with the identical resistance strain gage of resistance value and with the supporting terminal block of resistance strain gage, be connected to form Wheatstone bridge by lead between the described resistance strain gage, described Wheatstone bridge is connected with strainmeter by connecting line, and described housing is provided with the through hole that allows described connecting line to pass;
Described force transmission shaft is set between described elastic beam and the cover plate, and described force transmission shaft one end contacts with cover plate, the other end contacts with elastic beam.
Further, be provided with O-ring seal between described cover plate and the housing; Described housing inner chamber is filled with water-proof elastic sealing glue.
Further, described housing is cylindrical, and described housing is formed by base plate with the affixed stack shell of base plate; Described step is arranged on the base plate, and described step is a circle annulus, and described step and stack shell are by being threaded.
Further, described force transmission shaft is affixed with described elastic beam.
Technical conceive of the present invention is: in the housing inner chamber elastic beam is set, and at the both sides of elastic beam adhering resistance strain sheets and terminal block, resistance strain gage is connected into Wheatstone bridge.The soil pressure that is applied in the test on the circular cover is delivered on the elastic beam by force transmission shaft, causes elastic beam generation small strain, and then makes the foil gauge resistance that sticks on the beam change.The characteristics of elastic beam distortion are that upper surface shortens, the lower surface elongation, different variations takes place in this foil gauge resistance that will cause sticking on the beam upper and lower surface, though the distortion of beam is very small, can detect accurately by strainmeter through behind the amplification of Wheatstone bridge.Just can obtain the corresponding relation that soil pressure and strain-ga(u)ge reading change through after demarcating.
The invention has the beneficial effects as follows: 1, no matter the soil pressure of the soil body of which kind of rigidity is measured and all can well be suitable for; 2, each active gage equates that by the resistance change rate that temperature causes temperature effect is cancelled out each other in bridge circuit; 3, by the gap size between control circular cover and the housing can the limit strain beam maximum deformation quantity, prevent to cause the sensor damage owing to passing load is excessive; 4, measurement is highly sensitive, and precision is good, the reliability height.
Description of drawings
Fig. 1 is a cut-open view of the present invention.
Fig. 2 is a decomposing schematic representation of the present invention.
Fig. 3 is the synoptic diagram of elastic beam.
Embodiment
With reference to accompanying drawing, further specify the present invention:
Strain beam type soil pressure sensor, the cover plate 1 that comprises hollow housing and closure casing, be provided with elastic beam 6 and force transmission shaft 3 in the inner chamber of described housing, the bottom of described housing is provided with the upwardly extending step 12 of a circle, and described elastic beam 6 is set up on the described step 12;
The upper and lower surface of described elastic beam 6 be equipped with the identical resistance strain gage of resistance value 5 and with the supporting terminal block 4 of resistance strain gage 5, be connected to form Wheatstone bridge by lead between the described resistance strain gage 5, described Wheatstone bridge is connected with strainmeter by connecting line 9, and described housing is provided with the through hole 10 that allows described connecting line 9 to pass;
Described force transmission shaft 3 is set between described elastic beam 6 and the cover plate 1, and described force transmission shaft 3 one ends contact with cover plate 1, the other end contacts with elastic beam 6.
Be provided with O-ring seal 2 between described cover plate 1 and the housing; Described housing inner chamber is filled with water-proof elastic sealing glue 11.
Described housing is cylindrical, and described housing is formed by base plate 7 with the affixed stack shell 8 of base plate 7; Described step 12 is arranged on the base plate 7, and described step 12 is a circle annulus, and described step 12 and stack shell 8 are by being threaded.
Described force transmission shaft 3 affixed with described elastic beam 6.
Technical conceive of the present invention is: in the housing inner chamber elastic beam is set, and at the both sides of elastic beam adhering resistance strain sheets and terminal block, resistance strain gage is connected into Wheatstone bridge.The soil pressure that is applied in the test on the circular cover is delivered on the elastic beam by force transmission shaft, causes elastic beam generation small strain, and then makes the foil gauge resistance that sticks on the beam change.The characteristics of elastic beam distortion are that upper surface shortens, the lower surface elongation, different variations takes place in this foil gauge resistance that will cause sticking on the beam upper and lower surface, though the distortion of beam is very small, can detect accurately by strainmeter through behind the amplification of Wheatstone bridge.Just can obtain the corresponding relation that soil pressure and strain-ga(u)ge reading change through after demarcating.
The described content of this instructions embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (4)
1. strain beam type soil pressure sensor, it is characterized in that: the cover plate that comprises hollow housing and closure casing, be provided with elastic beam and force transmission shaft in the inner chamber of described housing, the bottom of described housing is provided with the upwardly extending step of a circle, and described elastic beam is set up on the described step;
The upper and lower surface of described elastic beam be equipped with the identical resistance strain gage of resistance value and with the supporting terminal block of resistance strain gage, be connected to form Wheatstone bridge by lead between the described resistance strain gage, described Wheatstone bridge is connected with strainmeter by connecting line, and described housing is provided with the through hole that allows described connecting line to pass;
Described force transmission shaft is set between described elastic beam and the cover plate, and described force transmission shaft one end contacts with cover plate, the other end contacts with elastic beam.
2. strain beam type soil pressure sensor as claimed in claim 1 is characterized in that: be provided with O-ring seal between described cover plate and the housing; Described housing inner chamber is filled with water-proof elastic sealing glue.
3. strain beam type soil pressure sensor as claimed in claim 2, it is characterized in that: described housing is cylindrical, and described housing is formed by base plate with the affixed stack shell of base plate; Described step is arranged on the base plate, and described step is a circle annulus, and described step and stack shell are by being threaded.
4. as the described strain beam type of one of claim 1-3 soil pressure sensor, it is characterized in that: described force transmission shaft affixed with described elastic beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010614532 CN102135458A (en) | 2010-12-30 | 2010-12-30 | Strain beam type soil pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010614532 CN102135458A (en) | 2010-12-30 | 2010-12-30 | Strain beam type soil pressure sensor |
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| CN102135458A true CN102135458A (en) | 2011-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201010614532 Pending CN102135458A (en) | 2010-12-30 | 2010-12-30 | Strain beam type soil pressure sensor |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359835A (en) * | 2011-09-27 | 2012-02-22 | 中铁隧道装备制造有限公司 | Soil pressure and grouting pressure sensor for shield tunnelling machine |
| CN102445293A (en) * | 2011-10-28 | 2012-05-09 | 西安欣源测控技术有限公司 | Infill stress sensor |
| CN103175639A (en) * | 2013-02-06 | 2013-06-26 | 苏州科技学院 | Piezoresistive high-frequency dynamic soil stress sensor and fabricating method thereof |
| CN103335755A (en) * | 2013-06-14 | 2013-10-02 | 浙江大学 | Strain axis type soil pressure sensor |
| CN104864987A (en) * | 2014-02-26 | 2015-08-26 | 阿尔卑斯电气株式会社 | Load detector and electronic unit using the same |
| CN105525634A (en) * | 2015-12-31 | 2016-04-27 | 长沙理工大学 | Anti-slide pile side soil pressure continuous monitoring device, anti-slide pile monitoring system and monitoring method and anti-slide pile construction method |
| CN105804325A (en) * | 2016-03-24 | 2016-07-27 | 扬州大学 | Prestressed reinforcement anchorage device and real-time monitoring system for effective prestress of reinforcements |
| CN105890837A (en) * | 2016-05-26 | 2016-08-24 | 中国科学院武汉岩土力学研究所 | Pressure cell for testing squeezing pressure on shield of tunnel boring machine applied by surrounding rock |
| CN106643463A (en) * | 2016-12-19 | 2017-05-10 | 华中科技大学 | Flexible full-bridge resistance strain sheet |
| CN106706192A (en) * | 2016-12-19 | 2017-05-24 | 哈尔滨威克科技有限公司 | Rail bottom bending moment type force transducer |
| CN106768499A (en) * | 2016-11-16 | 2017-05-31 | 中北大学 | Fluid pressure type soil pressure sensor |
| CN107957305A (en) * | 2018-01-09 | 2018-04-24 | 东北农业大学 | A kind of multidirectional wireless soil pressure sensor |
| CN111855043A (en) * | 2020-07-31 | 2020-10-30 | 长飞光纤光缆股份有限公司 | Fiber grating soil pressure sensor |
| CN112082674A (en) * | 2020-09-25 | 2020-12-15 | 长安大学 | Soil pressure measurement box based on positive flexoelectric effect |
| CN113340487A (en) * | 2021-07-12 | 2021-09-03 | 西南交通大学 | Earth pressure cell |
| CN113447170A (en) * | 2020-03-26 | 2021-09-28 | 精量电子公司 | Force detection device |
| CN114034427A (en) * | 2021-10-21 | 2022-02-11 | 长沙理工大学 | Soil pressure multiple spot distribution testing arrangement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034060A (en) * | 1987-12-16 | 1989-07-19 | 巴布科克和威尔科斯公司 | Dual sided pressure sensor |
| JP2607096B2 (en) * | 1987-09-18 | 1997-05-07 | 株式会社エンプラス研究所 | Force / moment detector |
| CN2567545Y (en) * | 2002-06-21 | 2003-08-20 | 中国科学院武汉岩土力学研究所 | Rigid counter-force device for soil pressure gauge |
| CN201149483Y (en) * | 2008-01-03 | 2008-11-12 | 中国科学院力学研究所 | Optical fibre strain sensor |
-
2010
- 2010-12-30 CN CN 201010614532 patent/CN102135458A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2607096B2 (en) * | 1987-09-18 | 1997-05-07 | 株式会社エンプラス研究所 | Force / moment detector |
| CN1034060A (en) * | 1987-12-16 | 1989-07-19 | 巴布科克和威尔科斯公司 | Dual sided pressure sensor |
| CN2567545Y (en) * | 2002-06-21 | 2003-08-20 | 中国科学院武汉岩土力学研究所 | Rigid counter-force device for soil pressure gauge |
| CN201149483Y (en) * | 2008-01-03 | 2008-11-12 | 中国科学院力学研究所 | Optical fibre strain sensor |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359835A (en) * | 2011-09-27 | 2012-02-22 | 中铁隧道装备制造有限公司 | Soil pressure and grouting pressure sensor for shield tunnelling machine |
| CN102445293A (en) * | 2011-10-28 | 2012-05-09 | 西安欣源测控技术有限公司 | Infill stress sensor |
| CN103175639A (en) * | 2013-02-06 | 2013-06-26 | 苏州科技学院 | Piezoresistive high-frequency dynamic soil stress sensor and fabricating method thereof |
| CN103175639B (en) * | 2013-02-06 | 2016-01-27 | 苏州科技学院 | The dynamic soil stress sensor of piezoresistance type high-frequency and preparation method |
| CN103335755A (en) * | 2013-06-14 | 2013-10-02 | 浙江大学 | Strain axis type soil pressure sensor |
| CN104864987A (en) * | 2014-02-26 | 2015-08-26 | 阿尔卑斯电气株式会社 | Load detector and electronic unit using the same |
| CN104864987B (en) * | 2014-02-26 | 2017-09-26 | 阿尔卑斯电气株式会社 | Load detecting device and the electronic equipment for having used above-mentioned load detecting device |
| CN105525634A (en) * | 2015-12-31 | 2016-04-27 | 长沙理工大学 | Anti-slide pile side soil pressure continuous monitoring device, anti-slide pile monitoring system and monitoring method and anti-slide pile construction method |
| CN105525634B (en) * | 2015-12-31 | 2017-05-24 | 长沙理工大学 | Anti-slide pile monitoring system and monitoring method and anti-slide pile construction method |
| CN105804325A (en) * | 2016-03-24 | 2016-07-27 | 扬州大学 | Prestressed reinforcement anchorage device and real-time monitoring system for effective prestress of reinforcements |
| CN105890837A (en) * | 2016-05-26 | 2016-08-24 | 中国科学院武汉岩土力学研究所 | Pressure cell for testing squeezing pressure on shield of tunnel boring machine applied by surrounding rock |
| CN105890837B (en) * | 2016-05-26 | 2019-05-21 | 中国科学院武汉岩土力学研究所 | A kind of test country rock is to the pressure cell of complete-section tunnel boring machine shield extruding force |
| CN106768499A (en) * | 2016-11-16 | 2017-05-31 | 中北大学 | Fluid pressure type soil pressure sensor |
| CN106768499B (en) * | 2016-11-16 | 2023-08-08 | 中北大学 | Hydraulic soil pressure sensor |
| CN106643463B (en) * | 2016-12-19 | 2019-05-14 | 华中科技大学 | A kind of flexibility full-bridge type resistance strain gage |
| CN106643463A (en) * | 2016-12-19 | 2017-05-10 | 华中科技大学 | Flexible full-bridge resistance strain sheet |
| CN106706192B (en) * | 2016-12-19 | 2020-01-21 | 哈尔滨铁路科研所科技有限公司 | Rail bottom bending moment type force sensor |
| CN106706192A (en) * | 2016-12-19 | 2017-05-24 | 哈尔滨威克科技有限公司 | Rail bottom bending moment type force transducer |
| CN107957305A (en) * | 2018-01-09 | 2018-04-24 | 东北农业大学 | A kind of multidirectional wireless soil pressure sensor |
| US11860050B2 (en) | 2020-03-26 | 2024-01-02 | Measurement Specialties (China) Ltd. | Load detector |
| CN113447170A (en) * | 2020-03-26 | 2021-09-28 | 精量电子公司 | Force detection device |
| CN113447170B (en) * | 2020-03-26 | 2023-08-15 | 精量电子公司 | Force detection device |
| CN111855043A (en) * | 2020-07-31 | 2020-10-30 | 长飞光纤光缆股份有限公司 | Fiber grating soil pressure sensor |
| CN112082674A (en) * | 2020-09-25 | 2020-12-15 | 长安大学 | Soil pressure measurement box based on positive flexoelectric effect |
| CN113340487A (en) * | 2021-07-12 | 2021-09-03 | 西南交通大学 | Earth pressure cell |
| CN114034427A (en) * | 2021-10-21 | 2022-02-11 | 长沙理工大学 | Soil pressure multiple spot distribution testing arrangement |
| CN114034427B (en) * | 2021-10-21 | 2024-03-26 | 长沙理工大学 | Soil pressure multiple spot distribution testing arrangement |
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Application publication date: 20110727 |