CN211014283U - Rock expansion rate automatic tester - Google Patents
Rock expansion rate automatic tester Download PDFInfo
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- CN211014283U CN211014283U CN201922018204.9U CN201922018204U CN211014283U CN 211014283 U CN211014283 U CN 211014283U CN 201922018204 U CN201922018204 U CN 201922018204U CN 211014283 U CN211014283 U CN 211014283U
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- 239000011435 rock Substances 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 26
- 238000005259 measurement Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000033228 biological regulation Effects 0.000 description 10
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 230000006698 induction Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000012620 biological material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a rock expansion rate automatic test appearance, including the base for hold sample and open-top's sample container, be used for detecting sample expansion deformation's measuring unit and the control unit, measuring unit's signal output part is connected with the signal input part electricity of control unit, and the control unit is used for the sample expansion deformation that the automatic recording measuring unit detected. The utility model discloses the advantage lies in having solved the defect that traditional expansion rate tester precision is poor, need the special messenger to watch on and take notes all night, lays the basis for the expansion rate test of realizing big batch sample, has improved test efficiency.
Description
Technical Field
The utility model belongs to the technical field of the expansion rate is experimental and specifically relates to a rock expansion rate automatic test appearance is related to.
Background
The expansive rock contains a large amount of hydrophilic minerals and can react with water-borne biological materials to ensure that the rock is subjected to volume expansion along with the change of humidity, and special soft rock generates great expansion pressure on structures, thereby seriously influencing the stability of engineering and even geological disasters. Thus, the determination of rock expansion tests is an important task in the field of geotechnical engineering. The rock expansibility test comprises an expansibility test and an expansibility test, wherein the expansibility test is used for measuring the expansion rate of the expansive rock which deforms axially after encountering water.
A pressure tester in the Water conservancy and hydropower engineering rock test regulation (S L264-2001) comprises a base, a pair of swing columns and a sample container are arranged on the base, a pressurizing unit is arranged on the two swing columns through a cross beam, a pressure sensor is arranged at the bottom of the pressurizing unit, a lantern ring is arranged in the sample container, a water permeable plate, a sample, the water permeable plate and an upper pressure plate are sequentially arranged in the lantern ring from bottom to top, and displacement change is observed by using a dial indicator.
The rock test regulation of hydraulic and hydroelectric engineering states that rock expansion rate tests comprise a free expansion rate test and a lateral line constraint expansion rate test, and specific operation regulations are specified. At present, a tester used in 'rock test regulations of hydraulic and hydroelectric engineering' is usually adopted in a free expansion rate test or a lateral line constraint expansion rate test and comprises a base and a sample container, dial indicators are arranged at the central positions of four side walls and the central position of a top wall of the sample container, a measuring head of each dial indicator extends into the sample container, five dial indicators are all installed on the sample container when the free expansion rate test is carried out, and the dial indicators on the side walls of the sample container are removed and sealed when the lateral line constraint expansion rate test is carried out.
Reading every 10min after sample loading is regulated by the Water conservancy and hydropower engineering rock test regulation until immersion is started after three continuous times of data are unchanged, reading every 10min within the first hour after immersion, reading every 1h later until the difference of adjacent readings is not more than 0.001mm, and the whole immersion test time is not less than 48 h. Therefore, the whole test process needs special people to watch, usually night watching is needed, and the manual error is large by adopting the tester; the sample to be detected is usually more in amount, the workload is large, and the labor intensity is high; the measuring head of the dial indicator is always soaked in water, so that the dial indicator is easy to rust, and the measuring error is increased; the temperature change of water is required to be not more than 2 ℃ in the test process, so the tester is usually transported into the incubator, but the dial indicator is erected on the sample container, so the tester is easy to damage due to collision in the transportation process.
Disclosure of Invention
An object of the utility model is to provide a can automatic acquisition and draw into curved rock expansion rate automatic test appearance.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
Rock expansion rate automatic test appearance, including the base for hold sample and open-top's sample container, be used for detecting sample expansion deformation's measuring unit and the control unit, measuring unit's signal output part with the signal input part electricity of control unit is connected, and the control unit is used for the sample expansion deformation that the automatic recording measuring unit detected.
The measuring unit comprises an axial strain measuring unit erected directly above the sample container.
The measurement cell further includes a radial strain measurement cell disposed on each sidewall of the specimen container.
The axial strain measurement unit comprises a stand column, a mounting rod is horizontally arranged at the top of the stand column, and a vertical strain sensor is arranged on the mounting rod corresponding to the center position of the bottom wall of the sample container.
The radial strain measuring unit comprises a support arranged on the base and a measuring head assembly arranged at the central position of the side wall of the sample container, and a horizontal strain sensor used for measuring the deformation of the measuring head assembly is arranged on the support; the four measuring head components are arranged in the same horizontal direction.
The measuring head assembly comprises a sealing cavity which is arranged at the center of the side wall of the sample container in a sealing mode through a sealing gasket, a sliding rod is arranged in the sealing cavity in a sealing and sliding mode, the outer end of the sliding rod extends out of the sealing cavity and is provided with a positioning groove matched with the horizontal strain sensor, and the measuring head at the inner end of the sliding rod extends inwards into the sample container.
And a sealing ring is arranged between the measuring head and the sealing cavity, and a pressure reducing ring is arranged between the sealing cavity and the sliding rod.
And a water level detector is arranged at the upper part of the side wall of the sample container.
The utility model discloses the advantage lies in having solved the defect that traditional expansion rate tester precision is poor, need the special messenger to watch on and take notes all night, lays the foundation for the expansion rate test of realizing big batch sample, and concrete advantage is:
1) the utility model discloses utilize strain sensor control to await measuring radial and axial deformation signal of sample, P L C can automatic recording, handle deformation signal and form the test curve, has realized the automatic survey of the sample expansion rate that awaits measuring, and the rate of accuracy is high, need not the special messenger and guards, practices thrift the manpower, alleviates intensity of labour.
2) The utility model discloses a gauge head subassembly be the plunger type structure, gauge head contact sample, and the gauge head atress drives the slide bar and slides in sealed intracavity after the sample inflation that awaits measuring, and horizontal strain transducer automatic acquisition reading has abandoned the artifical reading mode of amesdial of traditional form, has improved test efficiency.
3) The utility model is small and exquisite, and the strain sensor is arranged on the base, which is convenient for carrying; the tester can be moved into a constant temperature box to meet the constant temperature test conditions specified in the rock test regulations of water conservancy and hydropower engineering.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged cross-sectional structural view of the gauge head assembly of fig. 1.
Fig. 3 is a circuit control diagram of the present invention.
Detailed Description
As shown in figure 1, automatic rock expansion rate tester, including base 1, be provided with on the base 1 and be used for holding sample and open-top's sample container 2 for the measuring unit that detects sample expansion deflection and the control unit 3 that is used for the sample expansion deflection data that the automatic recording measuring unit detected, two porous disks 7 and a metal sheet 8 have been placed to sample container 2.
As shown in fig. 1 and 2, the measuring unit comprises an axial strain measuring unit for detecting the axial expansion deformation of the sample and four radial strain measuring units for detecting the radial expansion deformation of the sample;
The axial strain measurement unit comprises an upright post 4.1 fixed on the base 1, the top of the upright post 4.1 is horizontally provided with a mounting rod 4.2, a vertical strain sensor 4.3 is arranged on the mounting rod 4.2 corresponding to the central position of the bottom wall of the sample container 2, the vertical strain sensor 4.3 is positioned right above the sample container 2, and an induction head of the vertical strain sensor is contacted with the central position of a top metal plate 8 of a sample to be measured in the sample container 2;
The radial strain measuring unit comprises a support 5.1 arranged on the base 1 and a measuring head component arranged on the vertical center line of the side wall of the sample container 2, and a horizontal strain sensor 5.2 is arranged on the support 5.1; a mounting hole is formed in the center of each side wall of the sample container 2, the measuring head assembly comprises two sealing cavities 5.4 which are hermetically mounted in the mounting holes through sealing gaskets 5.3 (the two sealing gaskets 5.3 are respectively tightly attached to the inner surface and the outer surface of the side wall of the sample container 2 to prevent the sample container 2 from leaking water), sliding rods 5.5 are hermetically and slidably arranged in the sealing cavities 5.4, the outer ends of the sliding rods 5.5 outwards extend out of the sealing cavities 5.4 and are provided with positioning grooves 5.6 matched with the horizontal strain sensors 5.2, and measuring heads 5.7 at the inner ends of the sliding rods inwards extend into the sample container 2 and are contacted with a sample to be measured; the four measuring heads 5.7 are positioned on the same horizontal plane; a sealing ring 5.8 is arranged between the measuring head 5.7 and the sealing cavity 5.4, and a pressure reducing ring 5.9 is arranged between the sealing cavity 5.4 and the sliding rod 5.5.
as shown in fig. 3, the control unit 3 includes a control panel with a display screen, an operation button, a USB interface and a switch, a programmable controller (i.e. P L C) is arranged in the control panel, a signal input terminal of the pll C is electrically connected with a signal output terminal of the horizontal strain sensor 5.2 and a signal output terminal of the vertical strain sensor 4.3, and is used for automatically recording and processing signals transmitted by the horizontal strain sensor 5.2 and the vertical strain sensor 4.3 and forming a test curve, a data output terminal of the pll C is electrically connected with a data input terminal of the display screen, and the display screen can display test data.
As shown in figures 1 and 3, a water inlet and outlet joint is arranged at the lower part of one side wall of a sample container 2 and is communicated with an external water delivery pump, a water level detector 6 is arranged at the upper part of one side wall of the sample container 2, the signal output end of the water level detector 6 is electrically connected with the signal input end of a PLC, an alarm (which can be a light alarm or a sound alarm) is arranged on a control panel of a control unit 3, the signal output end of the PLC is electrically connected with the signal input end of the alarm, and when the water level in the sample container 2 rises to the position of the water level detector 6, the alarm gives an alarm to remind an operator of stopping water adding.
Adopt the utility model discloses the concrete operation flow of examining the free expansion rate of sample is examined in survey as follows:
(1) firstly, processing a sample to be tested according to the rock test regulation of hydraulic and hydroelectric engineering (S L264-2001), processing the sample to be tested into a cylindrical structure with the diameter of 50mm (or 61.8 mm) and the thickness of 1mm, and symmetrically placing a red copper sheet on the outer ring surface of the sample to be tested along the circumferential direction of the sample;
(2) Placing a sample to be tested into a sample container 2, sequentially placing a porous disc, a sample to be tested 9, a porous disc and a metal plate 8 into the sample container 2 from bottom to top, ensuring that four red copper sheets of the sample to be tested 9 respectively correspond to radial strain measuring units one by one, and then moving the tester into a constant temperature box;
(3) A vertical strain sensor 4.3 is arranged above the sample, and an induction head of the vertical strain sensor is contacted with the center of the metal plate 8;
(4) Respectively adjusting the measuring head components on each side wall of the sample container 2 to enable the four measuring heads 5.7 to point to the same center, ensuring that each measuring head 5.7 is in contact with the copper sheet corresponding to the measuring head, respectively clamping and mounting the induction head of the horizontal strain sensor 5.2 into the positioning groove 5.6 corresponding to the measuring head, enabling the induction head of the horizontal strain sensor 5.2 and the sliding rod 5.5 to be positioned on the same axis, and completing the installation of the sample to be measured;
(5) Closing the constant temperature box, starting a power switch of the control unit 3, starting the control unit 3 to acquire deformation data transmitted by the vertical strain sensor 4.3 and the four horizontal strain sensors 5.2 according to a set degree, injecting water into the sample container 2 until three continuous readings are consistent, and stopping injecting water when the water level rises to the position of the water level detector 6; and (3) automatically reading and recording deformation data by the control unit 3 after water injection according to a reading mode specified in the rock test regulations of the hydraulic and hydroelectric engineering, stopping the test until the difference between adjacent readings is not more than 0.001mm, and finishing the test of the free expansion rate of the sample to be tested within 48 hours.
Adopt the utility model discloses the concrete operation flow of waiting to examine sample side line restraint expansion ratio of survey is as follows:
(1) firstly, processing a sample to be tested according to the Water conservancy and hydropower engineering rock test regulations (S L264-2001), processing the sample to be tested into a cylindrical structure with the diameter of 50mm (or 61.8 mm) and the thickness of 1mm, and sleeving a rigid metal ring coated with vaseline on the outer ring surface of the sample to be tested;
(2) Placing a sample to be tested into a sample container 2, sequentially placing a permeable plate 7, the sample to be tested, the permeable plate 7 and a metal plate 8 in the sample container 2 from bottom to top, moving the tester into a constant temperature box, and installing a vertical strain sensor 4.3 right above the sample to enable an induction head of the vertical strain sensor to be in contact with the center of the metal plate 8;
(3) Closing the thermostat, starting a power switch of the control unit 3, starting the control unit 3 to acquire a deformation signal detected by the vertical strain sensor 4.3 according to a set degree and automatically process the deformation signal until three readings are consistent, injecting water into the sample container 2, and stopping injecting water when the water level rises to the position of the water level detector 6; and (3) automatically reading and recording deformation data by the control unit 3 after water injection according to a reading mode specified in the rock test regulations of the hydraulic and hydroelectric engineering, stopping the test until the difference between adjacent readings is not more than 0.001mm, and finishing the test of the free expansion rate of the sample to be tested within 48 hours.
In the description of the present invention, it should be noted that the terms "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Claims (8)
1. An automatic tester for rock expansion rate comprises a base (1), a sample container (2) and a measuring unit, wherein the sample container is used for containing a sample, the top of the sample container is provided with an opening, and the measuring unit is used for detecting the expansion deformation of the sample; the method is characterized in that: the device is characterized by further comprising a control unit (3), wherein the signal output end of the measuring unit is electrically connected with the signal input end of the control unit (3), and the control unit (3) is used for automatically recording the expansion deformation of the sample detected by the measuring unit.
2. The automatic rock expansion ratio tester according to claim 1, wherein: the measuring unit comprises an axial strain measuring unit erected right above the sample container (2) and is used for detecting the axial expansion deformation of the sample.
3. The automatic rock expansion ratio tester according to claim 2, wherein: the measuring unit further comprises four radial strain measuring units respectively arranged on each side wall of the sample container (2) and used for detecting the radial deformation of the sample.
4. The automatic rock expansion ratio tester according to claim 3, wherein: the axial strain measurement unit comprises a stand column (4.1), a mounting rod (4.2) is horizontally arranged at the top of the stand column (4.1), and a vertical strain sensor (4.3) is arranged on the mounting rod (4.2) corresponding to the center position of the bottom wall of the sample container (2).
5. The automatic rock expansion ratio tester according to claim 3, wherein: the radial strain measuring unit comprises a support (5.1) arranged on the base (1) and a measuring head assembly arranged on the vertical center line of the side wall of the sample container (2), and a horizontal strain sensor (5.2) used for measuring the deformation of the measuring head assembly is arranged on the support (5.1); the four measuring head components are arranged in the same horizontal direction.
6. The automatic rock expansion ratio tester according to claim 5, wherein: the measuring head component comprises a sealing cavity (5.4) which is arranged at the center of the side wall of the sample container (2) in a sealing mode through a sealing gasket (5.3), a sliding rod (5.5) is arranged in the sealing cavity (5.4) in a sealing and sliding mode, the outer end of the sliding rod (5.5) extends out of the sealing cavity (5.4) and is provided with a positioning groove (5.6) matched with the horizontal strain sensor (5.2), and a measuring head (5.7) at the inner end of the sliding rod extends into the sample container (2) inwards.
7. The automatic rock expansion ratio tester according to claim 6, wherein: a sealing ring (5.8) is arranged between the measuring head and the sealing cavity (5.4), and a pressure reducing ring (5.9) is arranged between the sealing cavity (5.4) and the sliding rod (5.5).
8. The automatic rock expansion ratio tester according to claim 1, wherein: and a water level detector (6) is arranged at the upper part of the side wall of the sample container (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922018204.9U CN211014283U (en) | 2019-11-21 | 2019-11-21 | Rock expansion rate automatic tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922018204.9U CN211014283U (en) | 2019-11-21 | 2019-11-21 | Rock expansion rate automatic tester |
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| Publication Number | Publication Date |
|---|---|
| CN211014283U true CN211014283U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922018204.9U Active CN211014283U (en) | 2019-11-21 | 2019-11-21 | Rock expansion rate automatic tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672819A (en) * | 2019-11-21 | 2020-01-10 | 黄河勘测规划设计研究院有限公司 | Rock expansion rate automatic tester |
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- 2019-11-21 CN CN201922018204.9U patent/CN211014283U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672819A (en) * | 2019-11-21 | 2020-01-10 | 黄河勘测规划设计研究院有限公司 | Rock expansion rate automatic tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210818 Address after: 450003 No. 109 Jinshui Road, Jinshui District, Henan, Zhengzhou Patentee after: Jianghe Engineering Inspection Co.,Ltd. Address before: 450003 No. 109 Jinshui Road, Jinshui District, Henan, Zhengzhou Patentee before: YELLOW RIVER ENGINEERING CONSULTING Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.109 Jinshui Road, Jinshui District, Zhengzhou City, Henan Province, 450000 Patentee after: Jianghe Anlan Engineering Consulting Co.,Ltd. Address before: 450003 No. 109 Jinshui Road, Jinshui District, Henan, Zhengzhou Patentee before: Jianghe Engineering Inspection Co.,Ltd. |