CN114659876B - Concrete compressive strength detection device - Google Patents
Concrete compressive strength detection device Download PDFInfo
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- CN114659876B CN114659876B CN202210127593.2A CN202210127593A CN114659876B CN 114659876 B CN114659876 B CN 114659876B CN 202210127593 A CN202210127593 A CN 202210127593A CN 114659876 B CN114659876 B CN 114659876B
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- 238000001514 detection method Methods 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 abstract description 12
- 239000000523 sample Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/52—Investigating hardness or rebound hardness by measuring extent of rebound of a striking body
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a concrete compressive strength detection device, which comprises a rebound instrument, wherein the rebound instrument comprises a shell, a pushing handle is arranged on the shell, a calibration unit is arranged on the pushing handle, and the calibration unit is used for calibrating the abutting angle between a bouncing rod at the front end of the rebound instrument and a concrete detection surface; before the resiliometer on the concrete compressive strength detection device contacts each detection point on the concrete detection surface, the calibration unit can be contacted with the detection surface at the detection point in advance, then the calibration unit adjusts the included angle between the bouncing rod of the resiliometer and the concrete detection point to be basically 90 degrees, and then the calibration unit can completely fix the position of the resiliometer in the process that the bouncing rod of the resiliometer is gradually contacted with the detection point so as to ensure that the bouncing rod of the resiliometer can be basically contacted with the detection point vertically and stably, so that the data error of the concrete compressive strength tested by the resiliometer is effectively reduced, and the judgment on the concrete compressive strength is improved.
Description
Technical Field
The invention relates to the technical field of concrete compressive strength detection, in particular to a concrete compressive strength detection device.
Background
The compressive strength of the concrete is related to the quality and service life of the building, and the strength value of the concrete is the maximum stress which the concrete can bear under a certain stress state and under the condition of work adjustment. The concrete nondestructive testing technology commonly used at present is usually rebound method for measuring strength, wherein a rebound instrument is used. The basic principle of the resiliometer is that a spring is used for driving a heavy hammer, the heavy hammer impacts a striking rod vertically contacted with the surface of concrete with constant kinetic energy, so that partial concrete is deformed and absorbs part of energy, the other part of energy is converted into the rebound kinetic energy of the heavy hammer, when the rebound kinetic energy is completely converted into potential energy, the heavy hammer rebounds to reach the maximum distance, and the maximum rebound distance of the heavy hammer is displayed by the instrument in the name of rebound value.
The application relates to a concrete resiliometer device and a using method thereof, and relates to the technical field of concrete strength detection, wherein the concrete resiliometer device comprises a supporting mechanism, a displacement mechanism, a mounting mechanism and a resiliometer body, wherein the bulletin number is CN111398029A, and the bulletin day is 2020 and 10 years; the supporting mechanism comprises a mounting frame and a plurality of mounting struts which are connected, and the mounting struts are fixed on a member to be tested; the displacement mechanism comprises a driving source and a sliding column, wherein the driving source and the sliding column are installed on the installation frame, and the driving source drives the sliding column to slide. The sliding column is provided with a sliding hole, the mounting mechanism comprises a first mounting piece and a second mounting piece which are connected, the first mounting piece is positioned on one side of the sliding column, and the second mounting piece is arranged in the sliding hole in a penetrating manner and can slide along the length direction of the sliding hole; the second mounting piece is connected with the resiliometer body, and the detection end of resiliometer body sets up towards the detection face. The application has the effect of enabling the axis of the resiliometer body to be better and always keep the detection surface of the vertical member, thereby improving the accuracy of the intensity measurement data of the detection surface of the member.
The defect of the prior art is that when the compressive strength of concrete is detected, a worker needs to select a plurality of detection points on the detected surface of the detected concrete, in theory, the worker needs to hold the rebound device to enable the rebound rod to be in contact with the detection points for a plurality of times, but in the actual use process, the included angle between the rebound rod and the detection points can not be basically kept at 90 degrees in the manual moving operation rebound device process, so that errors occur in the data of the compressive strength of the concrete detected by the rebound device, and the judgment of the compressive strength of the concrete is affected.
Disclosure of Invention
The invention aims to provide a concrete compressive strength detection device, which solves the technical problem of a current collecting net slitting device in the related art.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a concrete compressive strength detection device, includes the resiliometer, the resiliometer includes the casing, be provided with on the casing and push away the handle, it is provided with calibration unit to push away on the handle, the calibration unit is used for calibrating the butt angle of the bullet of resiliometer front end and concrete detection face.
The calibration unit is connected to the support rod in a sliding manner.
The calibration unit further comprises a support assembly, the support assembly comprises a plurality of sliding blocks, the sliding blocks are arranged on the support rods in a one-to-one corresponding sliding mode, and a first spring is connected between one end, away from the flicking rod, of the support rods and the sliding blocks.
One end of each supporting rod close to the striking rod is connected to a ring plate.
The ring plate is provided with a plurality of ejector rods in a uniformly sliding manner on one side far away from the flicking rod, and the ejector rods are arranged in parallel with the flicking rod.
The ejector rods are equally divided into a plurality of areas and are respectively in one-to-one correspondence with the supporting rods, the ejector rods are sleeved with second springs, the second springs are connected with the annular plates, a plurality of positioning plates are circumferentially and evenly arranged on one side, close to the spring striking rods, of the annular plates, third springs are connected between the positioning plates and the supporting rods, the ejector rods are in matched contact with the positioning plates, a deflector rod is hinged in the supporting rods, and one end, close to the annular plates, of each deflector rod is in movable contact with the positioning plates.
The end of the ejector rod far away from the annular plate is of a conical structure.
The calibration unit comprises a mounting plate, the mounting plate is arranged on the outer wall of the rebound instrument through binding hoops, calibration driving pieces are symmetrically arranged at two ends of the length direction of the mounting plate, a positioning piece used for fixing the position of the rebound instrument is jointly arranged between a pushing handle and the calibration driving pieces, a detection piece is arranged at the front end of the rebound instrument, the detection piece is used for detecting the flatness of a concrete detection surface, and the calibration driving pieces calibrate the position of the rebound instrument based on detection data of the detection piece.
The mounting plate is of an arc structure, and the included angle between the two calibration driving pieces is 90 degrees.
The calibration driving piece comprises a sector plate, the sector plate is symmetrically arranged at two ends of the arc length direction of the mounting plate, an arc-shaped rack is arranged on the sector plate, a support is rotatably arranged at the position corresponding to the sector plate by a pushing handle, the arc edge of the sector plate is in sliding connection with the support, a stepping motor is arranged on the support, a gear is arranged at the output end of the stepping motor, and the rack is meshed with the gear.
The invention has the beneficial effects that: before the resiliometer contacts with each detection point on the concrete detection surface, the calibration unit is contacted with the detection surface at the detection point in advance, then the calibration unit adjusts the included angle between the striking rod of the resiliometer and the concrete detection point to be basically 90 degrees, and then the calibration unit can completely fix the position of the resiliometer in the process that the striking rod of the resiliometer is gradually contacted with the detection point so as to ensure that the striking rod of the resiliometer can be basically and vertically and stably contacted with the detection point, so that the data error of the concrete compression strength tested by the resiliometer is effectively reduced, and the judgment on the concrete compression strength is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a calibration driving member according to the present invention;
FIG. 3 is a schematic top plan view of the present invention;
FIG. 4 is a schematic view of the cross-sectional structure of FIG. 3 at A-A in accordance with the present invention;
FIG. 5 is a schematic view showing a cross-sectional structure at B-B of FIG. 3 according to the present invention;
Fig. 6 is an enlarged schematic view of the structure of fig. 4 at C according to the present invention.
Reference numerals illustrate:
1. A resiliometer; 10. a housing; 11. a flick rod; 2. a pushing handle; 3. a calibration unit; 30. a mounting plate; 31. binding the hoop; 32. calibrating the driving member; 320. a sector plate; 321. a rack; 322. a support; 323. a stepping motor; 324. a gear; 33. a positioning piece; 330. pressing a cavity; 331. briquetting; 332. an air bag; 333. a sliding cavity; 334. a top block; 335. an air pipe; 336. a positioning block; 34. a probe; 340. a mounting frame; 341. an elastic telescopic rod; 342. a connecting block; 343. a probe ring; 344. a sensor; 345. a ball; 4. a support assembly; 40. a slide block; 41. a support rod; 42. a ring plate; 43. a push rod; 44. a positioning plate; 45. a deflector rod.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the device for detecting the compressive strength of concrete provided by the embodiment of the invention comprises a resiliometer 1, wherein the resiliometer 1 comprises a shell 10, a pushing handle 2 is arranged on the shell 10, a calibration unit 3 is arranged on the pushing handle 2, and the calibration unit 3 is used for calibrating the abutting angle between a flicking rod 11 at the front end of the resiliometer 1 and a concrete detection surface.
Specifically, when the compressive strength of concrete is detected, a plurality of detection points are required to be arranged on a selected concrete detection surface, then each detection point can be detected by utilizing the rebound instrument 1, finally, the compressive strength of the concrete can be obtained by integrating all detection data, when the rebound instrument 1 is used, the rebound rod 11 at the front end of the rebound instrument 1 is required to be in vertical contact with the detection points, the obtained detection data are more accurate, the existing rebound instrument 1 is not provided with a structure for calibrating the vertical contact of the rebound rod 11 with the detection points, when the calibration unit 3 arranged on the rebound instrument 1 is in contact with the detection surface at the detection points, the rebound rod 11 is further away from the detection points by a set distance, and in the process of pushing the push handle 2 to gradually approach the rebound rod 11 to the detection points, the calibration unit 3 can calibrate the position of the rebound instrument 1 by utilizing the segment, so that the rebound rod 11 at the front end of the rebound instrument 1 is in a basically vertical state when the detection points are in contact, and the compressive strength data of the concrete measured by the rebound instrument 1 are more accurate.
The invention has the beneficial effects that: before the resiliometer 1 contacts with each detection point on the concrete detection surface, the calibration unit 3 can contact with the detection surface at the detection point in advance, then the calibration unit 3 adjusts the included angle between the striking rod 11 of the resiliometer 1 and the concrete detection point to be basically 90 degrees, and then the calibration unit 3 can completely fix the position of the resiliometer 1 in the process that the striking rod 11 of the resiliometer 1 gradually contacts with the detection point so as to ensure that the striking rod 11 of the resiliometer 1 can basically contact with the detection point vertically and stably, so that the data error of the concrete compression strength tested by the resiliometer 1 is effectively reduced, and the judgment on the concrete compression strength is improved.
Further, the device for detecting the compressive strength of concrete provided by the embodiment of the invention comprises a sliding guide mechanism, wherein the sliding guide mechanism comprises a plurality of support rods 41 which are arranged in parallel, and the calibration unit 3 is connected to the support rods 41 in a sliding manner.
The calibration unit 3 further comprises a support assembly 4, the support assembly 4 comprises a plurality of sliding blocks 40, each sliding block 40 is slidably arranged on the support rod 41 in a one-to-one correspondence manner, and a first spring is connected between one end, away from the striking rod 11, of the support rod 41 and the sliding block 40.
One end of each support bar 41, which is close to the striking rod 11, is connected to a ring plate 42.
Specifically, when the calibration unit 3 at the front end of the resiliometer 1 is not contacted with the detection surface, the push handle 2 is firstly lifted to enable the annular plate 42 on the push handle 2 to be contacted with the detection surface, and because the contact area between the annular plate 42 and the detection surface is far greater than that between the flicking rod 11 and the detection surface, in the process that the push handle 2 is manually pushed by manpower to bring the resiliometer 1 gradually close to the detection surface, the force for pushing the push handle 2 is difficult to concentrate on one point because of manual force, the force component caused by deflection is avoided, the annular plate 42 can play a role of stable support, and the push handle 2 can always move along the direction designated by the support rod 41 due to the sliding fit effect of the sliding block 40 and the support rod 41, namely the force component can concentrate in the same direction, so that the support rod 41 is prevented from being pulled to move towards the detection surface when the push handle 2 is gradually moved towards the detection surface, the annular plate 42 can be tightly attached to the detection surface, and the first spring is convenient for resetting the resiliometer 1 can not influence the next operation of the resiliometer 1.
Furthermore, in the concrete compressive strength detecting device provided by the embodiment of the invention, a plurality of ejector rods 43 are uniformly and slidably arranged on one side, far away from the striking rod 11, of the annular plate 42, and the ejector rods 43 are arranged in parallel with the striking rod 11.
The ejector rods 43 are equally divided into a plurality of areas and are respectively in one-to-one correspondence with the support rods 41, the ejector rods 43 are sleeved with second springs, the second springs are connected with the annular plate 42, a plurality of positioning plates 44 are uniformly arranged on one side of the annular plate 42 close to the spring striking rod 11 in the circumferential direction, third springs are connected between the positioning plates 44 and the support rods 41, the ejector rods 43 are in matched contact with the positioning plates 44, a deflector rod 45 is hinged in the support rods 41, and one end, close to the annular plate 42, of the deflector rod 45 is in movable contact with the positioning plates 44.
One end of the ejector rod, which is far away from the annular plate, is of a conical structure.
Specifically, because the concrete wall is difficult to keep the surface evenness consistently, so set up a plurality of ejector pins 43 in one side of the annular plate 42, because ejector pin 43 one end is conical structure, the different size potholes on the adaptation detection face that can be better, when annular plate 42 is pushed gradually and is close to the detection face, ejector pin 43 on the level position on the detection face is pressed to the bottom in annular plate 42 preferentially, and ejector pin in the pothole can't be pressed to the bottom, annular plate 42 can no longer be close to the detection face like this, and the continued movement of push handle 2 can make slider 40 contact driving lever 45 gradually, driving lever 45 can stir locating plate 44 and remove on annular plate 42 after receiving the extrusion of slider 40, locating plate 44 can cooperate the contact with ejector pin 43, because the ejector pin 43 is located the one end surface roughness of ejector pin 43, the face that locating plate 44 is close to ejector pin 43 is rough surface, because the frictional force is great after the two are supported together, even hold the thrust that pushes rebound gauge 1 to lean on between locating plate 44 and the 43 and form the frictional force between the annular plate 43 again when the position is not used for the second place to be more stable in the operation on the annular plate 43 when the face is not used for the back-lying plate 43.
Furthermore, according to the concrete compressive strength detection device provided by the embodiment of the invention, the calibration unit 3 comprises the mounting plate 30, the mounting plate 30 is arranged on the outer wall of the rebound instrument 1 through the binding hoop 31, the calibration driving pieces 32 are symmetrically arranged at two ends of the mounting plate 30 in the length direction, the positioning pieces 33 for fixing the position of the rebound instrument 1 are jointly arranged between the push handle 2 and the calibration driving pieces 32, the front end of the rebound instrument 1 is provided with the detection pieces 34, the detection pieces 34 are used for detecting the flatness of a concrete detection surface, and the calibration driving pieces 32 calibrate the position of the rebound instrument 1 based on detection data of the detection pieces 34.
Specifically, in the process of pushing the front end striking rod 11 of the resiliometer 1 to contact with the detection point through the pushing handle 2, after the supporting component 4 stably supports the pushing handle 2, the detecting piece 34 can be preferentially contacted with the detection surface at the detection point, if the resiliometer 1 is not basically vertical to the detection surface, the detecting piece 34 can transmit signals to the calibration driving piece 32 after being contacted with the detection surface, the calibration driving piece 32 calibrates the position of the resiliometer 1 according to different signals, the angle between the resiliometer 1 and the detection surface is basically 90 degrees, and then when the pushing handle 2 is pushed to continuously move, the positioning piece 33 fixes the position of the resiliometer 1 after the calibration position, so that the calibrated angle between the resiliometer 1 and the detection surface can always move towards the detection point, thereby effectively improving the detection effect of the compressive strength of concrete.
Preferably, the mounting plate 30 is in a circular arc structure, the included angle between the two calibration driving members 32 is 90 °, specifically, each calibration driving member 32 may drive the resiliometer 1 to rotate in a plane with the connection point between the other calibration driving member 32 and the push plate as the center of a circle, so that when the two calibration driving members 32 work together, the resiliometer 1 will rotate in two planes, and the two planes are perpendicular to each other and are in a cross shape, similar to a cross positioning method, so that the included angle between the resiliometer 1 and the detection surface is substantially 90 °.
Preferably, the calibration driving member 32 includes a sector plate 320, the sector plate 320 is symmetrically disposed at two ends of the arc length direction of the mounting plate 30, a circular arc rack 321 is disposed on the sector plate 320, a support 322 is rotatably disposed at a position corresponding to the position of the push handle 2 and the sector plate 320, an arc edge of the sector plate 320 is slidably connected with the support 322, a stepping motor 323 is disposed on the support 322, a gear 324 is mounted at an output end of the stepping motor 323, and the rack 321 is meshed with the gear 324.
Specifically, after the detecting element 34 contacts with the detecting surface, a signal is transmitted to the stepper motor 323, the stepper motor 323 drives the gear 324 to rotate, because the arc edge of the sector plate 320 is in sliding connection with the support 322, the gear 324 rotates to drive the rack 321 to move, the mounting plate 30 drives the resiliometer 1 to rotate by taking the connection point of the push handle 2 and the other support 322 far away from the stepper motor 323 as an axis, and the rotation direction and the rotation angle of the stepper motor 323 are based on the signal transmitted by the detecting element 34, so that the angle between the resiliometer 1 and the detecting surface can be adjusted more accurately.
Preferably, the positioning member 33 includes a pressing cavity 330, the pressing cavity 330 is formed on the pushing handle 2, a pressing block 331 is slidably disposed on one side of the pressing cavity 330, an air bag 332 is disposed in the pressing cavity 330, the pressing block 331 is in contact with the air bag 332, a sliding cavity 333 is formed at a position of the pushing handle 2 corresponding to the support 322, a top block 334 is slidably disposed in the sliding cavity 333, a fourth spring is connected between the sliding cavity 333 and the top block 334, an air pipe 335 is connected between the air bag 332 and the sliding cavity 333, a positioning block 336 is slidably disposed on the support 322, a fifth spring is connected between the support 322 and the positioning block 336, and an arc edge of the sector plate 320 is in contact with the positioning block 336 in a matching manner.
Specifically, when the push handle 2 is continuously pushed after the position adjustment of the resiliometer 1 is completed, the pressing block 331 presses the air bag 332, the air bag 332 inputs air into the sliding cavity 333 through the air pipe 335, the top block 334 slides in the sliding cavity 333 due to the pushing of the air, the top block 334 presses the positioning block 336 after contacting with the positioning block 336, so that the positioning block 336 moves towards the arc edge of the sector plate 320, until the positioning block 336 contacts with the arc edge of the sector plate 320 in a matching manner, the position of the sector plate 320 is fixed, and therefore, the direction cannot deviate in the process of continuously moving the resiliometer 1 after being calibrated.
Preferably, the detecting member 34 comprises a mounting frame 340, the resiliometer 1 is connected with the mounting frame 340, be provided with the flexible pole 341 of elasticity on the mounting frame 340, the one end that the flexible pole 341 is close to the bullet and hits pole 11 articulates there is connecting block 342 and the junction of two is provided with first torsional spring, the one end that the bullet was hit pole 11 was kept away from to connecting block 342 articulates there is the ring 343 and the junction of two is provided with the second torsional spring, the ring 343 centre of a circle is hit with the bullet and hit pole 11 central line and align, be provided with sensor 344 on the connecting block 342, sensor 344 is used for detecting first torsional spring and second torsional spring elasticity and changes, the spring stiffness coefficient in the flexible pole 341 is greater than the stiffness coefficient of first torsional spring and second torsional spring, the ring 343 of surveying is kept away from the one side that the bullet hit pole 11 evenly rollingly installs a plurality of balls 345.
Specifically, after the probe ring 343 contacts with the detection surface at the detection point, if the angle between the resiliometer 1 and the detection surface is not 90 °, then because the probe ring 343 extrudes with each other between the detection surface and the detection surface, the probe ring 343 drives the connection block 342 to rotate at the connection position with the elastic telescopic rod 341, or the connection position between the probe ring 343 and the connection block 342 rotates, at this time, the first torsion spring or the second torsion spring will deform, then the sensor 344 detects the deformation signal of the first torsion spring or the second torsion spring, and transmits the signal to the calibration driving member 32, the calibration driving member 32 calibrates the position of the resiliometer 1 according to the signal, when calibrating the position of the resiliometer 1, the contact surface between the probe ring 343 and the detection surface will slide relatively, and the balls 345 can reduce friction force, thereby being more convenient for calibrating the operation of the driving member 32, after the calibration of the position of the resiliometer 1 is pushed close to the detection point, the elastic telescopic rod 341 is extruded and contracted, so that the resiliometer 11 will not influence the contact between the resiliometer 11 and the detection point.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (5)
1. The device for detecting the compressive strength of the concrete comprises a resiliometer, wherein the resiliometer comprises a shell, and is characterized in that a pushing handle is arranged on the shell, a calibration unit is arranged on the pushing handle, and the calibration unit is used for calibrating the abutting angle between a flicking rod at the front end of the resiliometer and a concrete detection surface;
the device comprises a sliding guide mechanism, wherein the sliding guide mechanism comprises a plurality of support rods which are arranged in parallel, and the calibration unit is connected to the support rods in a sliding manner;
The calibration unit further comprises a support assembly, the support assembly comprises a plurality of sliding blocks, the sliding blocks are arranged on the support rod in a one-to-one corresponding sliding mode, and a first spring is connected between one end, away from the striking rod, of the support rod and the sliding blocks;
The calibrating unit comprises a mounting plate, the mounting plate is arranged on the outer wall of the rebound instrument through binding hoops, two calibrating driving parts are symmetrically arranged at two ends of the length direction of the mounting plate, a positioning part for fixing the position of the rebound instrument is jointly arranged between the pushing handle and the calibrating driving parts, a detecting part is arranged at the front end of the rebound instrument and used for detecting the flatness of a concrete detection surface, and the calibrating driving parts calibrate the position of the rebound instrument based on detection data of the detecting part;
The mounting plate is of an arc structure, and the included angle between the two calibration driving pieces is 90 degrees;
The calibration driving piece comprises a sector plate, the sector plate is symmetrically arranged at two ends of the arc length direction of the mounting plate, a circular arc-shaped rack is arranged on the sector plate, a support is rotatably arranged at the position corresponding to the sector plate by a pushing handle, the arc edge of the sector plate is in sliding connection with the support, a stepping motor is arranged on the support, a gear is arranged at the output end of the stepping motor, and the rack is meshed with the gear.
2. A concrete compressive strength testing apparatus according to claim 1, wherein an end of each of the support rods adjacent to the striking rod is connected to a ring plate.
3. The concrete compressive strength detecting device according to claim 2, wherein a plurality of ejector rods are uniformly arranged on one side, far away from the flicking rod, of the annular plate in a sliding manner, and the ejector rods are arranged in parallel with the flicking rod.
4. The concrete compressive strength detection device according to claim 3, wherein the ejector rods are equally divided into a plurality of areas, the areas are respectively in one-to-one correspondence with the supporting rods, the ejector rods are sleeved with second springs, the second springs are connected with the annular plates, a plurality of positioning plates are circumferentially and uniformly arranged on one side, close to the striking rods, of the annular plates, a third spring is connected between each positioning plate and each supporting rod, the ejector rods are in matched contact with the corresponding positioning plates, a deflector rod is hinged in each supporting rod, and one end, close to the annular plates, of each deflector rod is in movable contact with each positioning plate.
5. The concrete compressive strength testing apparatus according to claim 4, wherein the end of the ejector rod far away from the annular plate is of a conical structure.
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| CN202210127593.2A CN114659876B (en) | 2022-02-11 | 2022-02-11 | Concrete compressive strength detection device |
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| CN202210127593.2A CN114659876B (en) | 2022-02-11 | 2022-02-11 | Concrete compressive strength detection device |
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| CN115524248B (en) * | 2022-10-28 | 2023-08-04 | 湖南元天检测技术有限公司 | Concrete intensity intelligent detection device |
| CN116296746B (en) * | 2023-03-13 | 2023-11-14 | 宁波市新铭建设工程测试有限公司 | High-durability pre-stress concrete performance rapid detection method |
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| CN112304793A (en) * | 2020-11-26 | 2021-02-02 | 山东省水利工程试验中心有限公司 | Hydraulic engineering is with small-size portable concrete intensity detection device |
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| KR101238388B1 (en) * | 2010-03-29 | 2013-02-28 | 김옥환 | Measuring instrument of compressive strength |
| CN113834748A (en) * | 2021-09-05 | 2021-12-24 | 河南牛帕力学工程研究院 | Resiliometer calibrating device |
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| CN112304793A (en) * | 2020-11-26 | 2021-02-02 | 山东省水利工程试验中心有限公司 | Hydraulic engineering is with small-size portable concrete intensity detection device |
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| Title |
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| 混凝土抗压强度检测技术;董玉 等;《无损检测》;20191231;第41卷(第2期);第12-15页 * |
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