CN112345740A - Positioning device for measuring concrete expansion and contraction deformation by non-contact method - Google Patents
Positioning device for measuring concrete expansion and contraction deformation by non-contact method Download PDFInfo
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- CN112345740A CN112345740A CN202011247691.7A CN202011247691A CN112345740A CN 112345740 A CN112345740 A CN 112345740A CN 202011247691 A CN202011247691 A CN 202011247691A CN 112345740 A CN112345740 A CN 112345740A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008602 contraction Effects 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 45
- 238000006073 displacement reaction Methods 0.000 claims abstract description 27
- 239000000523 sample Substances 0.000 claims abstract description 27
- 238000013016 damping Methods 0.000 claims description 15
- 238000001179 sorption measurement Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 230000006978 adaptation Effects 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000002969 artificial stone Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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Abstract
The invention discloses a positioning device for measuring concrete expansion and contraction deformation by a non-contact method, which comprises a bottom plate, wherein the lower surface of the bottom plate is fixedly connected with a universal wheel with a brake, the upper surface of the bottom plate is fixedly connected with a support column, the outer surface of the support column is respectively connected with an instrument storage box and a detection frame in a sliding manner, the inner wall of the instrument storage box is connected with a fixed plate in a sliding manner, and the upper surface of the fixed plate is fixedly connected with a rectangular fixed frame. This positioner of concrete inflation and shrinkage deformation is measured to non-contact method, through detecting the frame, the pick-up plate, the reference column, locating cap and positioning spring, conveniently adjust and fix displacement sensing probe's position, through non-contact concrete shrinkage deformation apparatus body, displacement sensing probe, fixed mark target and absorption formula standard mark target, conveniently measure the inflation and the shrinkage deformation volume of concrete detection piece, thereby make whole device have the effect that prevents the limited influence testing result of concrete deformation, the accuracy nature when guaranteeing to examine time measuring.
Description
Technical Field
The invention relates to the technical field of concrete measurement, in particular to a positioning device for measuring expansion and contraction deformation of concrete by a non-contact method.
Background
The common concrete is artificial stone which is prepared by taking cement as a main cementing material, mixing water, sand, stones and chemical additives and mineral admixtures as necessary, uniformly stirring, densely forming, curing and hardening according to a proper proportion, and has the advantages of rich raw materials, low cost, good plasticity, high strength, good durability, reinforcement by available steel bars and the like.
Can produce certain quota crazing line in the inside of concrete, make concrete structure wholeness cause destruction easily, directly can influence the mechanical properties and the durability of concrete, for the problem of convenient measurement concrete expansion and shrink, adopt non-contact concrete shrinkage deformation apparatus to measure now more, but at the measuring in-process, the concrete is all directly placed in the mould, when the concrete takes place the inflation, receive the influence of mould easily, the deformation of concrete has been restricted, lead to the measured data inaccuracy.
The invention provides a positioning device for measuring the expansion and contraction deformation of concrete by a non-contact method.
Disclosure of Invention
The invention aims to provide a positioning device for measuring the expansion and contraction deformation of concrete by a non-contact method, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a positioning device for measuring concrete expansion and shrinkage deformation by a non-contact method comprises a base plate, wherein a universal wheel with a brake is fixedly connected to the lower surface of the base plate, a support column is fixedly connected to the upper surface of the base plate, an instrument storage box and a detection frame are respectively and slidably connected to the outer surface of the support column, a fixed plate is slidably connected to the inner wall of the instrument storage box, a rectangular fixed frame is fixedly connected to the upper surface of the fixed plate, a placing plate is slidably connected to the inner wall of the rectangular fixed frame, a non-contact type concrete shrinkage deformation tester body is fixedly connected to the upper surface of the placing plate, a step-shaped sealing cover is fixedly connected to the upper surface of the non-contact type concrete shrinkage deformation tester body, a rotating groove is formed in the upper surface of the step-shaped sealing cover, a handle is rotatably connected to the inner side wall of the rotating groove through a rotating, the inner walls of the two sliding holes are connected with a detection plate in a sliding mode, the upper surface of the detection plate is fixedly connected with a displacement sensing probe through a fixing clamp, a concrete detection block is placed on the upper surface of the bottom plate, a fixed target is placed on the upper surface of the concrete detection block, and the side face of the fixed target is fixedly connected with an adsorption type standard target matched with the displacement sensing probe.
Preferably, the quantity of area brake universal wheel and support column is four, four area brake universal wheel is rectangle array fixed connection in the lower surface four corners department of bottom plate, four the support column is rectangle array fixed connection in the upper surface four corners department of bottom plate, the instrument is deposited the lower surface four corners department of case and is all seted up the standing groove with four support column looks adaptations.
Preferably, the upper surface fixed connection of fixed plate has a plurality of damping spring, a plurality of the equal fixed connection in top of damping spring is at the lower surface of placing the board, and a plurality of damping spring is rectangle array fixed connection at the upper surface of fixed plate, it is provided with the shock pad to place between the upper surface of board and the lower surface of non-contact concrete shrinkage deformation apparatus body, the material of shock pad is rubber.
Preferably, the side that the case was deposited to the instrument has seted up the chucking hole, the inner wall sliding connection in chucking hole has the chucking pole, the surface cover of chucking pole is equipped with the chucking spring, the chucking hole with chucking pole looks adaptation is all seted up to the side of the sealed lid of fixed plate and step form, the chucking pole extends the one end fixedly connected with pull ring that the case was deposited to the instrument, the quantity of chucking pole, chucking spring and pull ring is four, the quantity of the sealed side of the sealed lid of fixed plate and step form of opening the chucking hole is four.
Preferably, fixed threaded hole has been seted up to the side that the case was deposited to the instrument, fixed threaded hole's inner wall threaded connection has the fixing bolt who is used for the stationary barrier post, fixing bolt extends to the instrument and deposits the inside one end of incasement portion and the surface overlap joint of support column, fixing bolt's nut end external surface fixed connection has the dwang that makes things convenient for fixing bolt to rotate, fixing bolt's quantity is four.
Preferably, the number of the detection plates, the displacement sensing probes, the fixed targets and the adsorption type standard targets is two, each detection plate, each displacement sensing probe, each fixed target and each adsorption type standard target form a group, the two groups of detection plates, the two groups of displacement sensing probes, the two groups of fixed targets and the two groups of adsorption type standard targets are arranged in a mirror image mode, and the displacement sensing probes are electrically connected with the non-contact type concrete shrinkage deformation tester body.
Preferably, the front surface and the back surface of the detection plate are fixedly connected with positioning columns, the outer surfaces of the two positioning columns are sleeved with positioning caps, the opposite surfaces of the two positioning caps are respectively in lap joint with the front surface and the back surface of the detection frame, and the outer surfaces of the two positioning columns are sleeved with positioning springs.
Preferably, the side of the detection frame is provided with an adjusting threaded hole, the inner wall of the adjusting threaded hole is in threaded connection with an adjusting bolt, one end of the adjusting bolt extending into the detection frame is in lap joint with the outer surface of the support column, and the number of the adjusting bolts is four.
Advantageous effects
The invention provides a positioning device for measuring the expansion and contraction deformation of concrete by a non-contact method, which has the following beneficial effects:
1. this positioner of concrete inflation and shrinkage deformation is measured to non-contact method, through setting up the bottom plate, can directly place the concrete and detect the piece, through setting up the support column, detect the frame, the pick-up plate, the reference column, location cap and positioning spring, conveniently adjust and fix displacement sensing probe's position, through setting up non-contact concrete shrinkage deformation apparatus body, displacement sensing probe, fixed mark target and absorption formula standard mark target, conveniently measure the inflation and the shrinkage deformation of concrete detection piece, thereby make whole device have the effect that prevents the limited influence testing result of concrete deformation, the accuracy nature when guaranteeing to examine time.
2. This positioner that concrete inflation and shrinkage deformation were measured to non-contact method deposits the case through setting up area brake universal wheel and instrument, makes things convenient for the removal and the fixing of whole device, through setting up shock pad and damping spring, prevents to cause the phenomenon of non-contact concrete shrinkage deformation apparatus body damage at the in-process that removes whole device because the vibration.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the structure at B in FIG. 1 according to the present invention;
FIG. 4 is a schematic view of a top-down structure of the inspection frame according to the present invention;
FIG. 5 is an enlarged view of the structure of FIG. 4 at C according to the present invention.
In the figure: the device comprises a base plate 1, a universal wheel with a brake 2, a support column 3, an instrument storage box 4, a detection frame 5, a fixing plate 6, a rectangular fixing frame 7, a placing plate 8, a non-contact concrete shrinkage deformation tester body 9, a step-shaped sealing cover 10, a handle 11, a detection plate 12, a displacement sensing probe 13, a concrete detection block 14, a fixed target 15, an adsorption type standard target 16, a damping spring 17, a clamping rod 18, a clamping spring 19, a pull ring 20, a fixing bolt 21, a positioning column 22, a positioning cap 23, a positioning spring 24 and an adjusting bolt 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a positioner that concrete expansion and contraction deformation were measured to non-contact method, comprising a base plate 1, the lower fixed surface of bottom plate 1 is connected with area brake universal wheel 2, the last fixed surface of bottom plate 1 is connected with support column 3, the surface of support column 3 sliding connection has the instrument respectively and deposits case 4 and detection frame 5, the side that case 4 was deposited to the instrument has seted up fixed threaded hole, fixed threaded hole's inner wall threaded connection has fixing bolt 21 who is used for fixed support column 3, fixing bolt 21 extends to the instrument and deposits the inside one end of case 4 and support column 3's surface overlap joint, fixing bolt 21's nut end surface fixed connection has the convenient fixing bolt 21 pivoted dwang, fixing bolt 21's quantity is four.
The side of detecting frame 5 has seted up the regulation screw hole, and the inner wall threaded connection of adjusting the screw hole has adjusting bolt 25, and adjusting bolt 25 extends to the inside one end of detecting frame 5 and the outer surface overlap joint of support column 3, and adjusting bolt 25's quantity is four.
The quantity of area brake universal wheel 2 and support column 3 is four, and four area brake universal wheels 2 are rectangle array fixed connection in the lower surface four corners department of bottom plate 1, and four support columns 3 are rectangle array fixed connection in the upper surface four corners department of bottom plate 1, and the lower surface four corners department that the case 4 was deposited to the instrument all sets up the standing groove with four support column 3 looks adaptations, deposits case 4 through setting up area brake universal wheel 2 and instrument, makes things convenient for the removal and the fixing of whole device.
The inner wall of the instrument storage box 4 is connected with a fixed plate 6 in a sliding way, the upper surface of the fixed plate 6 is fixedly connected with a rectangular fixed frame 7, the inner wall of the rectangular fixed frame 7 is connected with a placing plate 8 in a sliding way, the upper surface of the placing plate 8 is fixedly connected with a non-contact concrete shrinkage deformation tester body 9, the upper surface of the fixed plate 6 is fixedly connected with a plurality of damping springs 17, the top ends of the plurality of damping springs 17 are all fixedly connected with the lower surface of the placing plate 8, and a plurality of damping springs 17 are fixedly connected to the upper surface of the fixed plate 6 in a rectangular array, a damping pad is arranged between the upper surface of the placing plate 8 and the lower surface of the non-contact concrete shrinkage deformation tester body 9, the damping pad is made of rubber, by arranging the damping pad and the damping spring 17, the phenomenon that the non-contact type concrete shrinkage deformation determinator body 9 is damaged due to vibration in the process of moving the whole device is prevented.
The upper surface fixedly connected with step-shaped sealing cover 10 of non-contact concrete shrinkage deformation apparatus body 9, the rotation groove has been seted up to the upper surface of step-shaped sealing cover 10, the inside wall that rotates the groove rotates through the axis of rotation and is connected with handle 11, the side that the case 4 was deposited to the instrument has seted up the chucking hole, the inner wall sliding connection in chucking hole has chucking pole 18, the surface cover of chucking pole 18 is equipped with chucking spring 19, the chucking hole with chucking pole 18 looks adaptation is all seted up to the side of fixed plate 6 and step-shaped sealing cover 10, chucking pole 18 extends the one end fixedly connected with pull ring 20 that the case 4 was deposited to the instrument, chucking pole 18, the quantity of chucking spring 19 and pull ring 20 is four, the quantity that the chucking hole was seted up to fixed plate 6 and step-shaped sealing.
The slide opening has all been seted up to the interior antetheca and the interior back wall that detect frame 5, and the inner wall sliding connection of two slide openings has pick-up plate 12, the equal fixedly connected with reference column 22 in front and the back of pick-up plate 12, and the surface of two reference columns 22 all overlaps and is equipped with locating cap 23, and the opposite face of two locating caps 23 respectively with the front and the back overlap joint that detect frame 5, the surface of two reference columns 22 all overlaps and is equipped with positioning spring 24.
The upper surface of the detection plate 12 is fixedly connected with a displacement sensing probe 13 through a fixing clamp, a concrete detection block 14 is placed on the upper surface of the bottom plate 1, the concrete detection block 14 can be directly placed through the arrangement of the bottom plate 1, a fixed target 15 is placed on the upper surface of the concrete detection block 14, the side surface of the fixed target 15 is fixedly connected with an adsorption type standard target 16 matched with the displacement sensing probe 13, the detection plate 12, the displacement sensing probe 13, the fixed target 15 and the adsorption type standard target 16 are two in number, each detection plate 12, the displacement sensing probe 13, the fixed target 15 and the adsorption type standard target 16 are in one group, the two groups of detection plates 12, the displacement sensing probe 13, the fixed target 15 and the adsorption type standard target 16 are arranged in a mirror image mode, the displacement sensing probe 13 is electrically connected with a non-contact type concrete shrinkage deformation tester body 9, and a support column 3 is arranged, Detect frame 5, pick-up plate 12, reference column 22, location cap 23 and positioning spring 24, conveniently adjust and fix the position of displacement sensing probe 13, through setting up non-contact concrete shrinkage deformation apparatus body 9, displacement sensing probe 13, fixed mark target 15 and absorption formula standard mark target 16, conveniently measure the inflation and the shrinkage deflection of concrete detection piece 14 to make whole device have the effect that prevents the limited influence testing result of concrete deformation, guarantee to detect the accuracy nature of time measuring.
The working principle is as follows: when the positioning device is required to be used and concrete expansion and contraction deformation is measured by a non-contact method, the whole device is moved to a measuring position by using a universal wheel 2 with a brake, then an instrument storage box 4 is lifted to a certain height and fixed by using a fixing bolt 21, then a clamping rod 18 is pulled by using a pull ring 20, a non-contact type concrete contraction deformation measuring instrument body 9 is lifted by using a handle 11, the clamping rod 18 and a clamping spring 19 are fixed with clamping holes formed in the side surface of a fixing plate 6, a concrete detection block 14 to be measured is placed on the upper surface of a bottom plate 1, a fixing target 15 is placed on the upper surface of the concrete detection block 14, then the height of a detection frame 5 is adjusted and fixed by using an adjusting bolt 25, then the detection plate 12 is used for adjusting the distance between a displacement sensing probe 13 and an adsorption type standard 16, and after the adjustment is finished, a positioning cap 23 and a positioning spring 24 are used for fixing, and finally, the expansion and shrinkage deformation of the concrete detection block 14 can be measured by utilizing the non-contact concrete shrinkage deformation tester body 9, the displacement sensing probe 13, the fixed target 15 and the adsorption type standard target 16, so that the whole device has the effect of preventing the concrete deformation from being limited to influence the detection result, and the accuracy in detection is ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A non-contact method measures the locating device that the concrete expands and contracts and warp, including bottom plate (1), its characterized in that: the lower surface of the bottom plate (1) is fixedly connected with a universal wheel (2) with a brake, the upper surface of the bottom plate (1) is fixedly connected with a support column (3), the outer surface of the support column (3) is respectively connected with an instrument storage box (4) and a detection frame (5) in a sliding manner, the inner wall of the instrument storage box (4) is connected with a fixed plate (6) in a sliding manner, the upper surface of the fixed plate (6) is fixedly connected with a rectangular fixed frame (7), the inner wall of the rectangular fixed frame (7) is connected with a placing plate (8) in a sliding manner, the upper surface of the placing plate (8) is fixedly connected with a non-contact type concrete shrinkage deformation tester body (9), the upper surface of the non-contact type concrete shrinkage deformation tester body (9) is fixedly connected with a step-shaped sealing cover (10), and the, the inner side wall of the rotating groove is rotatably connected with a handle (11) through a rotating shaft, slide holes are formed in the inner front wall and the inner rear wall of the detection frame (5), the inner wall of each slide hole is slidably connected with a detection plate (12), the upper surface of each detection plate (12) is fixedly connected with a displacement sensing probe (13) through a fixing clamp, a concrete detection block (14) is placed on the upper surface of the bottom plate (1), a fixed target (15) is placed on the upper surface of the concrete detection block (14), and the side surface of each fixed target (15) is fixedly connected with an adsorption type standard target (16) matched with the displacement sensing probe (13).
2. The positioning device for measuring the expansion and contraction deformation of concrete by the non-contact method according to claim 1, wherein: the quantity of area brake universal wheel (2) and support column (3) is four, four area brake universal wheel (2) are rectangle array fixed connection in the lower surface four corners department of bottom plate (1), four support column (3) are rectangle array fixed connection in the upper surface four corners department of bottom plate (1), the lower surface four corners department that the instrument was deposited case (4) all sets up the standing groove with four support column (3) looks adaptations.
3. The positioning device for measuring the expansion and contraction deformation of concrete by the non-contact method according to claim 1, wherein: the upper surface fixed connection of fixed plate (6) has a plurality of damping spring (17), a plurality of the equal fixed connection in top of damping spring (17) is at the lower surface of placing board (8), and a plurality of damping spring (17) are rectangle array fixed connection at the upper surface of fixed plate (6), it is provided with the shock pad to place between the upper surface of board (8) and the lower surface of non-contact concrete shrinkage deformation apparatus body (9), the material of shock pad is rubber.
4. The positioning device for measuring the expansion and contraction deformation of concrete by the non-contact method according to claim 1, wherein: the side that case (4) was deposited to the instrument has seted up the chucking hole, the inner wall sliding connection in chucking hole has chucking pole (18), the surface cover of chucking pole (18) is equipped with chucking spring (19), the chucking hole with chucking pole (18) looks adaptation is all seted up to the side of the sealed lid of fixed plate (6) and step form (10), chucking pole (18) extend one end fixedly connected with pull ring (20) that case (4) was deposited to the instrument, the quantity of chucking pole (18), chucking spring (19) and pull ring (20) is four, the quantity of seting up the chucking hole is four to the sealed lid of fixed plate (6) and step form (10) side.
5. The positioning device for measuring the expansion and contraction deformation of concrete by the non-contact method according to claim 1, wherein: fixed screw hole has been seted up to the side that case (4) was deposited to the instrument, fixed screw hole's inner wall threaded connection has fixing bolt (21) that are used for fixed stay post (3), fixing bolt (21) extend to the instrument and deposit the inside one end of case (4) and the surface overlap joint of support column (3), the nut end surface fixed connection of fixing bolt (21) makes things convenient for fixing bolt (21) pivoted dwang, the quantity of fixing bolt (21) is four.
6. The positioning device for measuring the expansion and contraction deformation of concrete by the non-contact method according to claim 1, wherein: the number of the detection plates (12), the displacement sensing probes (13), the fixed targets (15) and the adsorption type standard targets (16) is two, each detection plate (12), each displacement sensing probe (13), each fixed target (15) and each adsorption type standard target (16) are in a group, the detection plates (12), the displacement sensing probes (13), the fixed targets (15) and the adsorption type standard targets (16) are arranged in a mirror image mode, and the displacement sensing probes (13) are electrically connected with the non-contact type concrete shrinkage deformation tester body (9).
7. The positioning device for measuring the expansion and contraction deformation of concrete by the non-contact method according to claim 1, wherein: the front and the back of the detection plate (12) are fixedly connected with positioning columns (22), the outer surfaces of the two positioning columns (22) are respectively sleeved with positioning caps (23), the opposite surfaces of the two positioning caps (23) are respectively in lap joint with the front and the back of the detection frame (5), and the outer surfaces of the two positioning columns (22) are respectively sleeved with positioning springs (24).
8. The positioning device for measuring the expansion and contraction deformation of concrete by the non-contact method according to claim 1, wherein: the side of detecting frame (5) is seted up the regulation screw hole, the inner wall threaded connection who adjusts the screw hole has adjusting bolt (25), adjusting bolt (25) extend to the outer surface overlap joint of the inside one end of detecting frame (5) and support column (3), the quantity of adjusting bolt (25) is four.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011247691.7A CN112345740B (en) | 2020-11-10 | 2020-11-10 | Positioning device for measuring concrete expansion and contraction deformation by non-contact method |
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| CN202011247691.7A CN112345740B (en) | 2020-11-10 | 2020-11-10 | Positioning device for measuring concrete expansion and contraction deformation by non-contact method |
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| CN112345740B CN112345740B (en) | 2022-11-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595284A (en) * | 2021-03-04 | 2021-04-02 | 山东胜工检测技术有限公司 | Special calibration device for shale dilatometer and installation method thereof |
| CN112595284B (en) * | 2021-03-04 | 2021-05-28 | 山东胜工检测技术有限公司 | Special calibration device for shale dilatometer and installation method thereof |
| CN113758773A (en) * | 2021-08-06 | 2021-12-07 | 许延霞 | Deep soil heavy metal content monitor and monitoring method thereof |
| CN113758773B (en) * | 2021-08-06 | 2024-03-15 | 许延霞 | Deep soil heavy metal content monitor and monitoring method thereof |
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| CN112345740B (en) | 2022-11-22 |
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Effective date of registration: 20221101 Address after: 529,100 Building B, No. 1 Baoyuan Road, Jinguzhou Economic Development Pilot Zone, Jiangmen, Guangdong Applicant after: Guangdong Nanfang Testing Co.,Ltd. Address before: 510000 9 Industrial Avenue, economic development zone, Conghua District, Guangzhou City, Guangdong Province Applicant before: Xi Xiaoling |
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