CN205062788U - Multiprobe formula superminiature injection probe of measurable resistivity - Google Patents
Multiprobe formula superminiature injection probe of measurable resistivity Download PDFInfo
- Publication number
- CN205062788U CN205062788U CN201520615291.5U CN201520615291U CN205062788U CN 205062788 U CN205062788 U CN 205062788U CN 201520615291 U CN201520615291 U CN 201520615291U CN 205062788 U CN205062788 U CN 205062788U
- Authority
- CN
- China
- Prior art keywords
- probe
- injection
- pressure sensor
- superminiature
- multiprobe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a multiprobe formula superminiature injection probe of measurable resistivity, including many channel data collection appearance, still include last briquetting and the lower briquetting fixed through steel U -shaped anchor clamps, to go up and be provided with electric conductance pencil groove between briquetting and the lower briquetting, the bottom of lower briquetting is provided with opening hole groove down, and the tank bottom in hole groove is provided with miniature pressure sensor, and miniature pressure sensor passes through the conducting resin and is connected in the one end of the metal probe of hole inslot with the setting, and miniature pressure sensor's wire passes electric conductance pencil groove and is connected with many channel data collection appearance. The utility model discloses the rigidity probe that has multiple diameter and quantity, every kind of probe all have the independent pressure sensor that draws, only need the injection once can obtain the penetration resistance curve of the whole soil body, the moisture content loss on injection in -process soil body surface can be neglectd, the penetration test in -process, the resistivity of the soil body can be tested to the probe, adopts the comprehensive evaluation of mode that combines together with the penetration resistance and the resistivity factor, and the result is reliable more and accurate.
Description
Technical field
The utility model relates to rock mechanics and engineering field, relate to more specifically a kind of can measuring resistance rate the injection of multiprobe formula superminiature probe.Be suitable for but be not limited to study the engineering mechanical properties of structural, the special soils such as ultra-soft silt soil consolidation and solidification process, unsaturation red clay, expansive soil of various types of weak soil etc.
Background technology
It is generally acknowledged, fine grained soils is made up of the aggregate of different size, the size of aggregate, shape, internal construction and intensity determine mechanical property and the engineering properties of fine grained soils to a certain extent, for understanding and grasping distribution and the intensity of aggregate in unsaturated soil, Chinese scholars has carried out some research, super mini-penetrometer is a kind of tester by drag probe test material internal construction state, in the research being widely used in different subject and test activity, it is one of crucial means of testing of soil mechanics and the research such as building science, agricultural meteorology.But no matter be super mini-penetrometer or the miniature penetrometer based on Texture instrument, all there is following shortcoming: the single probe of the super mini-penetrometer probe employing that (1) is current, each injection is only with the data of the one group of penetration resistance and the degree of depth that obtain current injection position, if obtain the injection curve of the whole soil body, need tens times even injection of tens times, inefficiency; (2) because super mini-penetrometer probe needs repeatedly injection, cause soil body surface water-cut variation, thus affect the accuracy of superminiature injection result; (3) current super mini-penetrometer probe can only obtain the penetration-resistance curve of vertical direction by penetration resistance, then is evaluated aggregate mechanical characteristics by penetration resistance, and its evaluation method is more single.
In order to overcome above-mentioned 3 major defects and deficiency, be necessary to design a kind of high-efficiency dual-purpose superminiature injection composite probe device, improve injection efficiency, avoid repeatedly injection, the overall injection time is short, and is not limited to penetration resistance as unique evaluation method.
Utility model content
The purpose of this utility model be for prior art exist the problems referred to above, provide a kind of can measuring resistance rate the injection of multiprobe formula superminiature probe.Its single injection just can obtain multiple penetration resistance data, avoid repeatedly injection, the overall injection time is short, avoid surface moisture to scatter and disappear and affect the problem of measuring accuracy, and the resistivity factor can be provided as the device of auxiliary judge aggregate physical characteristic mode, this apparatus design structure is simple, easy and simple to handle, good stability, each group of component is durable in use, not easily consume, practical, and can according to the probe of soil moisture content state configuration multiple diameter, and the briquetting of the various shapes such as configuration is circular or square is to adapt to the problem of multiple shapes of soil sample to be measured, easy to operation, significantly improve injection efficiency, flexibility ratio and strong adaptability, also can overall merit aggregate physico-mechanical properties, be with a wide range of applications.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
A kind of can measuring resistance rate the injection of multiprobe formula superminiature probe, comprise multi-Channels Data Acquisition, also comprise by the fixing upper holder block of steel U-shaped fixture and lower lock block, conductance wire harness groove is provided with between upper holder block and lower lock block, the bottom of lower lock block is provided with downward opening hole slot, the bottom land of hole slot is provided with micro pressure sensor, micro pressure sensor is connected by conducting resinl one end with the metal probe be arranged in hole slot, and the wire of micro pressure sensor is connected with multi-Channels Data Acquisition through conductance wire harness groove.
Metal probe as above comprises conical probe and cylindrical needle bar, and one end of cylindrical needle bar is arranged in hole slot.
The diameter of cylindrical needle bar as above is less than the maximum cross section diameter of conical probe.
A kind of can measuring resistance rate the injection of multiprobe formula superminiature probe, also comprise DC power control case, DC power control case comprises galvanometer, potentiometer, dc source and electrode converter,
Dc source, for providing DC voltage;
Electrode converter, for by the DC voltage of dc source switch be carried in different adjacent metal probes to;
Galvanometer, during for measuring current adjacent metal probe to loading DC voltage, current adjacent metal probe is to the electric current in loop, place;
Potentiometer, for measure current adjacent metal probe to loading DC voltage time, current adjacent metal probe between voltage.
The thickness of the periphery of upper holder block as above is less than the thickness in the middle of upper holder block, and the mid portion of upper holder block is plane and offers prepared screw-bolt hole.
The utility model compared with prior art, has the following advantages:
(1) adopt composite probe device, be characterized in that combined probe has the rigid probe of multiple diameter and quantity, often kind of probe all has independently pull pressure sensor, only needs injection once can obtain the penetration-resistance curve of the whole soil body; Above-mentioned combined probe also can arrange multiple density probe, and probe has multiple diameter, can meet the test of multiple dimensioned aggregate;
(2) because an injection can obtain the penetration-resistance curve of multiple spot, therefore, the moisture content loss of soil body surface can be ignored, and the result of test is more accurate;
(3) in superminiature penetration test process, probe can test the resistivity of the soil body, adopts the overall merit mode combined with penetration resistance and the resistivity factor, and result is more reliable and accurate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is structural top view of the present utility model;
Fig. 3 is structural base view of the present utility model;
Fig. 4 is power controling box internal circuit diagram
Fig. 5 is penetration resistance and the depth of penetration relation curve of different-diameter probe.
In figure: 1-metal probe, 1a-taper shape probe, 1b-cylindrical needle bar, 2-high strength plastics briquetting, 2a-upper holder block, 2b-lower lock block, 2c-hole slot, 3-conductance wire harness groove, 4-pressure sensor conductance wire harness, 5-single pressure sensor electric lead, 6-micro pressure sensor, 7-conducting resinl, 8-butterfly screws, 9-steel U-shaped fixture, 10-prepared screw-bolt hole, 11-DC power control case, 11a-galvanometer, 11b-potentiometer, 11c-dc source, 12-electrode converter, 13-multi-Channels Data Acquisition, 14-computer.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment 1:
As shown in figures 1-4, a kind of can measuring resistance rate the injection of multiprobe formula superminiature probe, comprise multi-Channels Data Acquisition 13, also comprise by steel U-shaped fixture 9 fixing upper holder block 2a and lower lock block 2b, conductance wire harness groove 3 is provided with between upper holder block 2a and lower lock block 2b, the bottom of lower lock block 2b is provided with downward opening hole slot 2c, the bottom land of hole slot 2c is provided with micro pressure sensor 6, micro pressure sensor 6 is connected by conducting resinl 7 one end with the metal probe 1 be arranged in hole slot 2c, the wire of micro pressure sensor 6 is connected with multi-Channels Data Acquisition 13 through conductance wire harness groove 3.
Preferably, metal probe 1 comprises conical probe 1a and cylindrical needle bar 1b, and one end of cylindrical needle bar 1b is arranged in hole slot 2c.
Preferably, the diameter of cylindrical needle bar 1b is less than the maximum cross section diameter of conical probe 1a.
Preferably, also comprise DC power control case 11, DC power control case 11 comprises galvanometer 11a, potentiometer 11b, dc source 11c and electrode converter 12,
Dc source 11c, for providing DC voltage;
Electrode converter 12, for by the DC voltage of dc source switch be carried in different adjacent metal probes 1 to;
Galvanometer 11a, during for measuring current adjacent metal probe 1 to loading DC voltage, current adjacent metal probe is to the electric current in loop, place;
Potentiometer 11b, for measure current adjacent metal probe 1 to loading DC voltage time, current adjacent metal probe between voltage.
Preferably, the thickness of the periphery of upper holder block 2a is less than the thickness in the middle of upper holder block 2a, and the mid portion of upper holder block 2a is plane and offers prepared screw-bolt hole 10.
Metal probe 1 is by the overall cutting forming of taper shape probe 1a and cylindrical needle bar 1b, material is high strength steel, cylindrical needle bar 1b diameter is less than conical probe 1a maximum gauge, and its advantage is that of avoiding the force of sliding friction between cylindrical needle bar 1b and the soil body.Conical probe 1a maximum gauge scope is 0.85mm ~ 2.95mm;
High strength plastics 2 briquetting comprises upper holder block 2a and lower lock block 2b, has hole slot 2c so that install metal probe 1, and preset conductance wire harness groove 3 between upper lower lock block in lower lock block 2b.Described upper holder block 2a peripheral thickness is less than interior thickness, and be convenient to butterfly screws 8 and the fastening upper holder block 1a of steel U-shaped fixture 9, lower lock block 1b, the intermediate projections surfacing of upper holder block 1a, is convenient to load application simultaneously.High strength plastics 2 briquetting is square or circular, and the length of side or diameter are 3cm ~ 30cm;
Micro pressure sensor 6, adopts foil gage to be attached to the strain pressure transducer (can purchase foil gauge and alloy steel processes) of alloyed steel elastic body.
DC power control case 11, comprise galvanometer 11a, potentiometer 11b, dc source 11c and electrode converter 12, electrode converter 12 can make dc source 11c successively between on-load voltage to adjacent two metal probes 1, the be energized soil body between two metal probes, adjacent two metal probes 1, dc source 11c and galvanometer 11a form power circuits, and galvanometer 11a and potentiometer 11b is for monitoring the voltage between electric current on power circuit and adjacent two metal probes 1.
The positive and negative electrode of dc source 11c loads on the upper end of adjacent cylindrical needle bar 1b respectively through conducting resinl 7 by electric lead.
The effect one of conducting resinl 7 is cohered in the cylindrical needle bar 1b upper end of metal probe 1 and micro pressure sensor 6, and two is enable the electric current of dc source 11c conduct to metal probe 1 by conducting resinl 7.
The voltage of micro pressure sensor 6 is provided by the pressure sensor conductance wire harness 4 be connected with DC power control case 11.The voltage of dc source 11c is directly transmitted on metal probe 1 by conducting resinl 7, and does not need through micro pressure sensor 6.
Multi-Channels Data Acquisition 13, sampling multiple walks abreast, simultaneously corresponding multiple micro pressure sensor 6 and voltage, current value can carry out data acquisition and communication transmission (commercially available Multichannel data acquisition device, is no less than 32 passages, as AT4516 multi-Channels Data Acquisition etc.).
Operating principle of the present utility model be by multiple metal probe 1 form a kind of can measuring resistance rate the injection of multiprobe formula superminiature probe, cylindrical needle bar 1b diameter is adopted to be less than the metal probe 1 of conical probe 1a maximum gauge, avoid the force of sliding friction between cylindrical needle bar 1b and the soil body, thus the pressure measured by micro pressure sensor 6 is penetration resistance, thus reach the effect that an injection obtains the size of whole soil sample aggregate, shape, internal construction and intensity.Moreover, metal probe 1 order can be made to be energized between two by electrode converter 12, the be energized soil body between two metal probes 1, adjacent two metal probes 1, dc source 11c, galvanometer 11a forms power circuit, voltage between the electric current of galvanometer 11a and potentiometer 11b on monitoring circuit and adjacent two metal probes 1, calculate and obtain resistance, to be converted the change in resistance value obtaining between adjacent two metal probes 1 between the soil body by cross-sectional area and soil sample length again, thus can the physical characteristic of Appraisal Mission's aggressiveness.
The penetration resistance that injection stress can be obtained by test and probe cross section are amassed and are calculated, that is, be injection stress (MPa); For penetration resistance (N); For the cross-sectional area (mm at taper shape probe 1a maximum cross-section place
2).
Embodiment 2:
Soil sample to be measured is yellowish-brown, hard plastic state, and containing black iron-manganese concretion, be the diameter 61.8mm that undisturbed soil cuts, the cutting ring sample of height 20mm, moisture content is 17.0%, and dry density is 1.77g/cm
3.
This test institute employing miniature probe is probe overall length is 60mm, and arranging conical probe 1a cross section maximum gauge is 1.75mm, and as shown in Figure 3, probe diameter center distance is 10mm, forms rectangular probe combinations.Injection speed is set to 50mm/min, and actual measurement injection speed is 50.5mm/min, and depth of penetration is 8.0mm, and during every injection 1mm, test resistance rate is worth 1 time.Other are consistent with embodiment 1 for probe apparatus.
When metal probe 1 is conical probe 1a, during to survey in speed injection soil sample that speed is 50.5mm/min, micro pressure sensor 6 receives pressure signal, multi-Channels Data Acquisition 13 is transferred to by single pressure sensor electric lead 5 and pressure sensor conductance wire harness 4, and record on computer 14 and store data, thus obtain penetration resistance test value.Simultaneously, electrode converter 12 in DC power control case 11 makes metal probe 1 be energized between two by clock-wise order, be energized the soil body between two metal probes, adjacent two metal probe 1, dc source 11, galvanometer 11a and potentiometer 11b formation power circuits, voltage between the electric current of galvanometer 11a and potentiometer 11b on monitoring circuit and adjacent two metal probes 1, obtain resistance, by the change in resistance value between the soil body between cross-sectional area and soil sample length conversion acquisition two metal probes.
When Fig. 5 is in the speed injection soil sample with 50.5mm/min, in rectangular probe combinations fifth line different lines injection stress-depth of penetration-resistivity relation figure Shang the numerical value of Bu Transverse coordinate such as (5,1) represent the position of probe, be specially the 5th row the 1st and arrange; Ordinate represents depth of penetration, unit millimeter; Curve in figure is the change curve of injection stress with depth of penetration, and the size of injection stress is represented by Xia Bu Transverse coordinate scale, and unit is MPa, (noting every bar injection stress curve all corresponding to an independently bottom abscissa); Article two, the numerical value of such as 39.8 between injection stress curve represents the resistivity value of two adjacent probe when depth of penetration is 1mm place between the soil body, and unit is ().Can in order to characterize the situation and corresponding change in resistance situation that whole inside soil body strength of agglomerates (injection stress) changes along depth of penetration.Adopt above-mentioned a kind of can the multiprobe formula superminiature injection probe of measuring resistance rate, injection efficiency can improve 2 ~ 60 times, the overall injection time is short, soil body surface water evaporation rate is less than 0.5%, ensure that the accuracy of superminiature injection result, and the resistivity factor can be obtained as comprehensive evaluation index, reach the test objective of high-efficiency dual-purpose.Have can according to the probe of soil moisture content state configuration multiple diameter simultaneously, and the briquetting of the various shapes such as configuration is circular or square is to adapt to the problem of multiple shapes of soil sample to be measured, easy to operation, significantly improve injection efficiency, flexibility ratio and strong adaptability, good stability, each group component are durable in use, not easily consume, practical, also can overall merit aggregate physico-mechanical properties, be with a wide range of applications.
Specific embodiment described herein is only to the utility model explanation for example.The utility model person of ordinary skill in the field can make various amendment to described specific embodiment supplementary or alternative, but can not depart from marrow of the present utility model or surmount the scope that appended claims defines outward.
Claims (5)
1. one kind can measuring resistance rate the injection of multiprobe formula superminiature probe, comprise multi-Channels Data Acquisition (13), it is characterized in that, also comprise by the fixing upper holder block (2a) of steel U-shaped fixture (9) and lower lock block (2b), conductance wire harness groove (3) is provided with between upper holder block (2a) and lower lock block (2b), the bottom of lower lock block (2b) is provided with downward opening hole slot (2c), the bottom land of hole slot (2c) is provided with micro pressure sensor (6), micro pressure sensor (6) is connected by conducting resinl (7) one end with the metal probe (1) be arranged in hole slot (2c), the wire of micro pressure sensor (6) is connected with multi-Channels Data Acquisition (13) through conductance wire harness groove (3).
2. according to claim 1 a kind of can measuring resistance rate the injection of multiprobe formula superminiature probe, it is characterized in that, described metal probe (1) comprises conical probe (1a) and cylindrical needle bar (1b), and one end of cylindrical needle bar (1b) is arranged in hole slot (2c).
3. according to claim 2 a kind of can the multiprobe formula superminiature injection probe of measuring resistance rate, it is characterized in that, the diameter of described cylindrical needle bar (1b) is less than the maximum cross section diameter of conical probe (1a).
4. according to claim 1 a kind of can measuring resistance rate the injection of multiprobe formula superminiature probe, it is characterized in that, also comprise DC power control case (11), DC power control case (11) comprises galvanometer (11a), potentiometer (11b), dc source (11c) and electrode converter (12)
Dc source (11c), for providing DC voltage;
Electrode converter (12), for by the DC voltage of dc source switch be carried in different adjacent metal probes (1) to;
Galvanometer (11a), during for measuring current adjacent metal probe (1) to loading DC voltage, current adjacent metal probe is to the electric current in loop, place;
Potentiometer (11b), for measure current adjacent metal probe (1) to loading DC voltage time, current adjacent metal probe between voltage.
5. according to claim 1 a kind of can measuring resistance rate the injection of multiprobe formula superminiature probe, it is characterized in that, the thickness of the periphery of described upper holder block (2a) is less than the thickness in the middle of upper holder block (2a), and the mid portion of upper holder block (2a) is plane and offers prepared screw-bolt hole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520615291.5U CN205062788U (en) | 2015-08-14 | 2015-08-14 | Multiprobe formula superminiature injection probe of measurable resistivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520615291.5U CN205062788U (en) | 2015-08-14 | 2015-08-14 | Multiprobe formula superminiature injection probe of measurable resistivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205062788U true CN205062788U (en) | 2016-03-02 |
Family
ID=55389364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520615291.5U Expired - Fee Related CN205062788U (en) | 2015-08-14 | 2015-08-14 | Multiprobe formula superminiature injection probe of measurable resistivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205062788U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136559A (en) * | 2015-08-14 | 2015-12-09 | 中国科学院武汉岩土力学研究所 | Efficient dual-use ultra-miniature penetration probe apparatus |
| CN107905789A (en) * | 2017-12-20 | 2018-04-13 | 中国地质大学（武汉） | A kind of measuring device and method of rock exposure resistivity |
| CN110376439A (en) * | 2019-08-16 | 2019-10-25 | 广州特种机电设备检测研究院 | A kind of non-metal material surface resistance testing device |
| CN110702879A (en) * | 2019-10-21 | 2020-01-17 | 成都理工大学 | Device and method for measuring disturbance range of soil body after sampling |
-
2015
- 2015-08-14 CN CN201520615291.5U patent/CN205062788U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136559A (en) * | 2015-08-14 | 2015-12-09 | 中国科学院武汉岩土力学研究所 | Efficient dual-use ultra-miniature penetration probe apparatus |
| CN105136559B (en) * | 2015-08-14 | 2018-01-23 | 中国科学院武汉岩土力学研究所 | A kind of high-efficiency dual-purpose superminiature injection probe apparatus |
| CN107905789A (en) * | 2017-12-20 | 2018-04-13 | 中国地质大学（武汉） | A kind of measuring device and method of rock exposure resistivity |
| CN107905789B (en) * | 2017-12-20 | 2019-06-25 | 中国地质大学（武汉） | A kind of measuring device and method of rock exposure resistivity |
| CN110376439A (en) * | 2019-08-16 | 2019-10-25 | 广州特种机电设备检测研究院 | A kind of non-metal material surface resistance testing device |
| CN110702879A (en) * | 2019-10-21 | 2020-01-17 | 成都理工大学 | Device and method for measuring disturbance range of soil body after sampling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205062788U (en) | Multiprobe formula superminiature injection probe of measurable resistivity | |
| CN105136559A (en) | Efficient dual-use ultra-miniature penetration probe apparatus | |
| CN200993624Y (en) | Portable soil bearing rigidity measuring instrument | |
| CN103174122B (en) | Lateral stress pore pressure probe used for testing soil static lateral pressure coefficient | |
| CN104931335B (en) | Conducting function material stress-electric coupling effect test system and its method of testing | |
| CN106197607B (en) | A kind of device and method of precise measurement level of ground water | |
| CN112485302B (en) | Method and device for measuring anisotropy in soil body compression process | |
| CN201429486Y (en) | Probe type soil body pore space water pressure measuring meter | |
| CN105527453B (en) | A kind of note formula wide sediment concentration range flow velocity measuring device and measuring method certainly | |
| CN210954167U (en) | Resistance tester | |
| CN201074319Y (en) | Static sounding two-bridge probe | |
| CN205981293U (en) | Humiture measurement instrument | |
| CN202809591U (en) | Static cone penetration system | |
| CN211453441U (en) | Resistivity test device under tensile state of indoor undisturbed soil sample | |
| CN203630080U (en) | Single-probe type detector for directly measuring pH value and humidity of soil | |
| CN205066640U (en) | Thickness gauge is spread to pitch pine | |
| CN217212396U (en) | Portable soil humidity detection device | |
| CN203361119U (en) | Energy environment static sounding probe capable of measuring temperature of deep soil | |
| CN103543250A (en) | Undisturbed three-way contraction testing device | |
| CN102590486B (en) | Cement paste water cement ratio meter and use method thereof | |
| CN202630870U (en) | Simple measuring scale for measuring thickness of ice layer in water area | |
| CN205642895U (en) | But electrodynamic type temperature measurement soil sampling ware | |
| CN204789565U (en) | Portable liquid plastic limit testing arrangement | |
| CN213749708U (en) | Unconfined compression device for measuring resistivity of rock and soil mass | |
| CN2622713Y (en) | A.C. low frequency soil resistivity tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20200814 |