CN113075031B - Concrete compressive strength field test equipment - Google Patents
Concrete compressive strength field test equipment Download PDFInfo
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- CN113075031B CN113075031B CN202110183007.1A CN202110183007A CN113075031B CN 113075031 B CN113075031 B CN 113075031B CN 202110183007 A CN202110183007 A CN 202110183007A CN 113075031 B CN113075031 B CN 113075031B
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
The invention discloses a concrete compression strength on-site detection device, which comprises a test box and a magnetic body, wherein the magnetic body is arranged in the test box, one end of the test box is provided with a feed inlet, four corners of the lower end of the magnetic body are fixedly provided with a first spring, the lower end of the first spring is fixedly provided with a pressure plate, the test box at two ends of the pressure plate is internally provided with a second chute, the pressure plate is arranged in the second chute in a sliding manner, the inner wall of one end of the second chute is provided with a groove, the inner part of the groove is fixedly provided with a second spring, the other end of the second spring is fixedly provided with a first sliding block, the invention adopts an upper grapple and a lower grapple, after the strength detection of the concrete body is completed, the crushed concrete body on a rotatable backing plate can be obliquely poured out through the matching of the upper grapple and the lower grapple, the cleaning and the collection of the crushed concrete body are convenient, and the matching and the separation of the upper grapple and the lower grapple are automatically completed, the operation is not needed to be carried out manually, and the use is very convenient.
Description
Technical Field
The invention belongs to the technical field related to concrete strength detection, and particularly relates to a concrete compressive strength field detection device.
Background
Concrete, referred to as concrete for short, is a general term for engineering composite materials in which aggregates are cemented into a whole by cementing materials, and the term concrete generally refers to cement as the cementing material and sand and stone as the aggregates; the concrete compressive strength field detection equipment is provided for solving the problems that the concrete compressive strength field detection equipment is inconvenient to clean and inconvenient to recover because the concrete can be pressed into powder after detection, and the concrete compressive strength field detection equipment is obtained by mixing the concrete with water (which can contain an additive and an admixture) according to a certain proportion and stirring.
Disclosure of Invention
The invention aims to provide concrete compressive strength field detection equipment to solve the problems that the concrete field strength detection provided in the background art is not convenient enough and is inconvenient to clean after being crushed.
In order to achieve the purpose, the invention provides the following technical scheme:
a concrete compressive strength field test device comprises a test box and a magnetic body, wherein the magnetic body is installed inside the test box, a feed inlet is formed in one side of the test box, first springs are fixed at four corners of the lower end of the magnetic body, and pressure plates are fixed at the lower ends of the first springs;
the pressure plate is composed of an external shell and an electromagnet positioned in the shell, second sliding grooves are formed in the interior of the test box on the front side and the rear side of the pressure plate, the pressure plate is arranged in the second sliding grooves in a sliding mode, a groove is formed in the inner wall of one end of each second sliding groove, a second spring is fixed in each groove, a first sliding block is fixed at the other end of each second spring, the first sliding blocks are connected with the grooves in a sliding mode, the outer wall of one end of each first sliding block penetrates through the corresponding groove and is arranged in the corresponding second sliding groove, and a contact switch is arranged in each second sliding groove;
a pressure sensor is fixed inside the lower end of the pressure plate, the output end of the pressure sensor is electrically connected with a microprocessor, the display screen is fixed on the outer wall of the test box, the contact switch is connected with the microprocessor, and the output end of the microprocessor is connected with the display screen;
a second rotating shaft is fixed on one side of the lower end of the pressure plate, the lower end of the second rotating shaft is rotatably connected with an upper grapple, a magnetic block is fixed at a hook end of the upper grapple, a first rotating shaft is fixed inside the test box, the first rotating shaft is rotatably connected with a backing plate, first rotating holes are formed in the test box on two sides of the backing plate, two ends of the first rotating shaft are rotatably connected with the first rotating holes, the backing plate is arranged right below the pressure plate, a concrete body is placed at the upper end of the backing plate, and a lower grapple is fixed on one side of the upper end of the backing plate and corresponds to the upper grapple (18);
a sliding resistance wire is fixed inside the test box, a third sliding groove is formed inside the test box, a first rack is connected inside the third sliding groove in a sliding mode, a sliding sheet is fixed at the upper end of the first rack and is connected with the sliding resistance wire in a sliding mode, a motor is fixed inside the test box, a power supply wiring end of the motor is electrically connected with a two-way switch, a gear is fixed at the output end of the motor, the gear is meshed with the outer wall of the lower end of the first rack, a second rack is arranged inside the test box in a sliding mode, a top plate is fixed at one end of the second rack, and the outer wall of the upper end of the second rack is meshed with the gear;
the power supply, the two-way switch, the sliding resistance wire, the sliding sheet and the electromagnet form a conductive path.
Specifically, the counterpoint groove has been seted up to the one end of test box, the second rack slides and sets up in the inside of counterpoint groove, the one end of second rack can pass the counterpoint groove and set up in the outside of test box 1.
Specifically, when the base plate is in the horizontal position, the outer wall of the upper end of the base plate and the bottom surface of the inner wall of the test box are in the same horizontal plane.
Specifically, the outer wall of the backing plate is a smooth wall.
Specifically, one end of the first sliding block is conical, and the conical surface of the first sliding block is arranged inside the second sliding groove.
Compared with the prior art, the invention provides concrete compressive strength on-site detection equipment, which has the following beneficial effects:
the invention adopts the electromagnet, the magnetic force of the electromagnet is adjusted by the sliding resistance wire, and the compressive strength of the concrete block is detected by the repulsion force of the magnetic body to the pressure plate, so that the detected data can be obtained easily, and the detection is relatively simple, thus being suitable for being used at any time on site.
The upper grapple and the lower grapple are adopted, after the strength detection of the concrete body is finished through the cooperation of the upper grapple and the lower grapple, the crushed concrete body on the rotatable backing plate can be obliquely poured out, the crushed concrete body is convenient to clean and collect, and the cooperation and the separation of the upper grapple and the lower grapple are automatically finished without manual operation, so that the use is very convenient.
The invention adopts a bidirectional switch to control the magnetic pole direction of the electromagnet, thereby controlling the ascending and descending of the pressure plate and controlling the repulsion and attraction of the pressure plate to the upper grapple to make the upper grapple automatically move.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is an enlarged view of A1 in FIG. 2;
figure 4 is a schematic structural view of the crushed concrete block of the present invention;
figure 5 is a schematic structural view of the invention after concrete blocks are discharged;
FIG. 6 is a schematic view of the upper grapple and the lower grapple of the present invention;
FIG. 7 is a schematic view of the working states of the upper grapple and the lower grapple of the present invention;
FIG. 8 is a schematic view of the working states of the upper grapple and the lower grapple of the present invention;
FIG. 9 is a schematic view of the moving state of the concrete block of the present invention 9;
FIG. 10 is a schematic view of a conductive via connection according to the present invention;
fig. 11 is a schematic diagram of the circuit connections of the pressure sensor, the microprocessor, the shock switch, and the display according to the present invention.
In the figure: 1. a test box; 2. a magnetic body; 3. a first spring; 4. a pressure plate; 5. a pressure sensor; 6. concrete blocks; 7. a display screen; 8. a sliding resistance wire; 9. a first rack; 10. sliding blades; 11. a gear; 12. a second rack; 13. a top plate; 14. a base plate; 15. a first rotating shaft; 16. a first rotary hole; 17. a second chute; 18. an upper grapple; 19. a first slider; 20. a second spring; 21. a feed inlet; 22. a motor; 23. a lower grapple; 24. a second rotating shaft; 25. a magnetic block; 26. a bidirectional switch.
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. 1-11, the present invention provides a technical solution: a concrete compressive strength field detection device comprises a test box 1, a magnetic body 2, a pressure plate 4, a pressure sensor 5, a sliding resistance wire 8, a first rack 9, a motor 22, a first spring 3 and a backing plate 14. The motor 22 drives the first rack 9 to rotate, the sliding sheet 10 on the first rack 9 is in sliding contact with the sliding resistance wire 8 to change the resistance value of the sliding resistance wire 8 connected into a conductive path, so that the magnetic force of the pressure plate 4 is increased, the pressure plate 4 is pushed by the magnetic body 2 to move downwards, the concrete body 6 on the backing plate 14 is crushed, and the pressure obtained by the pressure sensor 5 inside the lower end of the pressure plate 4 is displayed on the display screen 7.
The magnetic body 2 is installed in the test box 1, and the feed inlet 27 is opened at one end of the test box 1. The four corners of the lower end of the magnetic body 2 are fixed with first springs 3, the lower end of each first spring 3 is fixed with a pressure plate 4, each pressure plate 4 is composed of an external shell and an electromagnet located in the shell, second sliding grooves 17 are formed in the test boxes 1 on the front side and the rear side of each pressure plate 4, each pressure plate 4 is arranged in each second sliding groove 17 in a sliding mode, a groove is formed in the inner wall of one end of each second sliding groove 17, a second spring 20 is fixed in each groove, a first sliding block 19 is fixed to the other end of each second spring 20, each first sliding block 19 is connected with each groove in a sliding mode, the outer wall of one end of each first sliding block 19 penetrates through each groove and is arranged in each second sliding groove 17, and each second sliding groove 17 is internally provided with a contact switch.
A pressure sensor 5 is fixed in the lower end of the pressure plate 4, the output end of the pressure sensor 5 is electrically connected with a microprocessor, the display screen 7 is fixed on the outer wall of the test box 1, the contact switch is connected with the microprocessor, and the output end of the microprocessor is connected with the display screen 7. The pressure sensor 5 transmits the obtained pressure value to the microprocessor in real time, when the first sliding block 19 is pushed into the second sliding groove 17 by the pressure plate 4 to touch the contact switch, the microprocessor acquires a closing state signal of the contact switch, obtains a pressure value of the pressure sensor 5 at the moment, and transmits the pressure value to the display screen 7 for displaying.
Lower extreme one side of pressure plate 4 is fixed with second pivot 24, the lower extreme of second pivot 24 rotates and is connected with grapple 18, go up grapple 18's crotch end and be fixed with magnetic path 25, the inside of test box 1 is fixed with first pivot 15, first pivot 15 rotates and is connected with backing plate 14, first round of hole 16 has been seted up to test box 1 inside of backing plate 14 both sides, first pivot 15 both ends rotate with first round of hole 16 and are connected, backing plate 14 sets up under pressure plate 4, concrete body 6 has been placed to the upper end of backing plate 14, upper end one side of backing plate 14 is fixed with down grapple 23 and is corresponding with last grapple 18.
A sliding resistance wire 8 is fixed inside the test box 1, a third sliding groove is formed inside the test box 1, a first rack 9 is connected inside the third sliding groove in a sliding mode, a sliding sheet 10 is fixed at the upper end of the first rack 9, the sliding sheet 10 is connected with the sliding resistance wire 8 in a sliding mode, a motor 28 is fixed inside the test box 1, a power supply terminal of the motor 28 is electrically connected with a two-way switch 26, a gear 11 is fixed at the output end of the motor 22, the gear 11 is meshed with the outer wall of the lower end of the first rack 9, a second rack 12 is arranged inside the test box 1 in a sliding mode, a top plate 13 is fixed at one end of the second rack 12, and the outer wall of the upper end of the second rack 12 is meshed with the gear 11;
the power supply, the two-way switch 26, the sliding resistance wire 8, the sliding sheet 10 and the electromagnet form a conductive path.
In order to move the pressure plate 4 by magnetic force, the magnetic body 2 is made of magnetic material, the pressure plate 4 is electrified to control the direction of the magnetic force generated by the pressure plate 4, and the magnetic body 2 repels or attracts the pressure plate 4, so that the pressure plate 4 can be always controlled to move upwards or downwards.
In order to facilitate the movement of the second rack 12, one end of the test box 1 is provided with a positioning groove, the second rack 12 is slidably disposed in the positioning groove, and one end of the second rack 12 can penetrate through the positioning groove and be disposed on the outer side of the test box 1, so that the second rack 12 cannot be blocked by the test box 1 when moving along with the motor 22.
In order not to affect the sliding of the top plate 13, when the pad 14 is in the horizontal position, the outer wall of the upper end of the pad 14 and the inner wall of the test box 1 are in the same horizontal plane, so that the pad 14 does not protrude inside the test box 1, and the top plate 13 is not blocked by the pad 14 when sliding inside the test box 1.
In order to pour out the crushed concrete body 6 conveniently, the outer wall of the base plate 14 is smooth, so that the crushed concrete body 6 is not easy to adhere to the outer wall of the base plate 14, and the cleaning is more convenient.
In order to be able to mate, the upper catch hook 18 and the lower catch hook 23 are arranged opposite one another in the upper and lower position, so that the upper catch hook 18 and the lower catch hook 23 can mate together.
In order not to affect the sliding of the pressure plate 4, one end of the first slider 19 is tapered, the tapered surface of the first slider 19 is disposed inside the second sliding slot 17, and the tapered end surface enables the pressure plate 4 to push the first slider 19 to slide so as to touch the contact switch when the pressure plate 4 is contacted, so that the pressure plate 4 cannot be clamped.
The working principle is as follows:
when the compression resistance of the concrete block 6 needs to be tested. The concrete block 6 is arranged on the detection position of the backing plate 14.
The motor 28 is activated and the gear 11 rotates anticlockwise, causing the first rack 9 to slide to the left and the second rack 12 to slide to the right. At the same time, the slide 10 starts to slide on the slide rheostat 8, the current direction is the first current direction, and the resistance value in the conductive path is continuously reduced, so that the magnetism of the pressure plate 4 is increased. The repulsive force applied to the pressure plate 4 by the magnetic body 2 causes the pressure plate 4 to slide downward. Pressure plate 4 is brought into contact with concrete block 6 and pressure application is initiated.
The pressure plate 4 is always attracted to the magnetic blocks 25 on the upper grapple 18, so that the upper grapple is attracted to the lower surface of the pressure plate 4.
When the concrete block 6 is broken by pressure, the pressure plate 4 touches the first slide block 19 to enable the first slide block 19 to slide and touch the contact switch, so that the microprocessor records the pressure value collected by the pressure sensor 5 at the moment and then stores the pressure value. The pressure sensor 5 records the pressure at this moment, and then the compression strength of the concrete block 6 can be obtained by taking the gravity of the pressure plate 4 and the elastic force generated by the elastic deformation of the first spring 3 into account. And the magnetic force of the magnetic block 25 in the upper grapple 18 is very small, and errors in detection can be ignored.
After the concrete block 6 is broken, the pressure plate 4 continues to descend until it slides to the lowest end of the second chute 17. The pressure plate 4 presses and breaks the concrete block 6, and becomes a small concrete block.
At this time, the switch 26 is turned off, and the magnetic force of the pressure plate 4 becomes zero. The upper grapple 18 is no longer subjected to the magnetic attraction force of the pressure plate 4 to it. The upper grapple 18 swings down by its own weight against the magnetic action of the magnetic body 2 on the upper grapple 18, and the grapple section of the upper grapple 18 falls below the grapple section of the upper grapple 23. At this time, although the pressure plate 4 is pulled upward by the first spring 3, the pressure plate 4 can still fall below the catch point of the upper catch hook 18.
The switch 26 is then turned on again but the current direction of the conductive path is changed, which is opposite to the first current direction, to a second current direction. The direction of the magnetic poles of the pressure plate 4 is changed. The magnetic body 2 starts to attract the pressure plate 4 to move upwards, and simultaneously the upper grapple 18 drives the lower grapple 23 to move upwards, so that the right end of the backing plate 14 is driven to move upwards, the backing plate 14 is inclined, and the crushed concrete block 6 gradually slides out of the test box 1.
At this time, the control motor 28 rotates clockwise, the first rack 9 moves rightward, and the second rack 12 moves leftward. The resistance in the conductive path decreases continuously, so that the magnetic properties of the pressure plate 4 increase. The pressure plate 4 is raised to the extreme position, the backing plate 14 is inclined at the maximum angle and the crushed concrete block 6 slides out of the test box 1.
The switch 26 is again turned on and the current direction of the conductive path is restored to the first current direction. The direction of the magnetic poles of the pressure plate 4 is changed. The control motor 28 rotates counterclockwise, the first rack 9 moves leftward and the second rack 12 moves rightward. The resistance in the conductive path decreases continuously, so that the magnetic properties of the pressure plate 4 increase. The pressure plate 4 moves down to the lowest position again by the repulsive force of the magnetic body 2, and the grapple section of the upper grapple 18 falls below the grapple section of the upper grapple 23, at this time, the magnetic blocks 25 on the upper grapple 18 are attracted by the magnetic force of the pressure plate 4, so that the upper grapple 18 is attracted to the pressure plate 4 again, and the upper grapple 18 is separated from the lower grapple. The pad 14 returns to the horizontal position.
The second rack 12 drives the top plate 13 to move to the rightmost position, and the next concrete block 6 to be tested is fed from the feeding hole 27.
The motor 28 is controlled to rotate, the gear 11 moves clockwise, the first rack 9 moves rightwards, meanwhile, the second rack 12 pushes the top plate 13 to enable the next concrete block 6 to be detected to move leftwards, until the concrete block 6 to be detected is pushed to the detection position, and the sliding sheet is located at the right side end of the sliding resistance wire 8. The magnetism of the pressure plate 4 is at a minimum and the first spring 3 pulls the pressure plate 4 to an initial position.
Then, the next detection can be started again.
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 (5)
1. The utility model provides a concrete compressive strength field test equipment, includes test box (1) and magnetic substance (2), its characterized in that: a magnetic body (2) is installed inside the test box (1), a feed inlet (27) is formed in one side of the test box (1), first springs (3) are fixed at four corners of the lower end of the magnetic body (2), and pressure plates (4) are fixed at the lower ends of the first springs (3);
the pressure plate (4) is composed of an external shell and an electromagnet positioned in the shell, a second sliding groove (17) is formed in the test box (1) on the front side and the rear side of the pressure plate (4), the pressure plate (4) is arranged in the second sliding groove (17) in a sliding mode, a groove is formed in the inner wall of one end of the second sliding groove (17), a second spring (20) is fixed in the groove, a first sliding block (19) is fixed at the other end of the second spring (20), the first sliding block (19) is connected with the groove in a sliding mode, the outer wall of one end of the first sliding block (19) penetrates through the groove and is arranged in the second sliding groove (17), and a contact switch is arranged in the second sliding groove (17);
a pressure sensor (5) is fixed inside the lower end of the pressure plate (4), the output end of the pressure sensor (5) is electrically connected with a microprocessor, a display screen (7) is fixed on the outer wall of the test box (1), a contact switch is connected with the microprocessor, and the output end of the microprocessor is connected with the display screen (7);
a second rotating shaft (24) is fixed on one side of the lower end of the pressure plate (4), an upper grapple (18) is rotatably connected to the lower end of the second rotating shaft (24), a magnetic block (25) is fixed on the hook end of the upper grapple (18), a first rotating shaft (15) is fixed inside the test box (1), a backing plate (14) is rotatably connected to the first rotating shaft (15), first rotating holes (16) are formed in the test box (1) on two sides of the backing plate (14), two ends of the first rotating shaft (15) are rotatably connected with the first rotating holes (16), the backing plate (14) is arranged under the pressure plate (4), a concrete body (6) is placed on the upper end of the backing plate (14), and a lower grapple (23) is fixed on one side of the upper end of the backing plate (14) and corresponds to the upper grapple (18);
a sliding resistance wire (8) is fixed inside the test box (1), a third sliding groove is arranged inside the test box (1), a first rack (9) is connected in the third sliding chute in a sliding way, a sliding sheet (10) is fixed at the upper end of the first rack (9), the slide sheet (10) is connected with the slide resistance wire (8) in a sliding way, a motor (22) is fixed inside the test box (1), a power supply terminal of the motor (22) is electrically connected with a bidirectional switch (26), a gear (11) is fixed at the output end of the motor (22), the gear (11) is meshed with the outer wall of the lower end of the first rack (9), a second rack (12) is arranged in the test box (1) in a sliding mode, a top plate (13) is fixed at one end of the second rack (12), and the outer wall of the upper end of the second rack (12) is meshed with the gear (11);
the power supply, the two-way switch (26), the sliding resistance wire (8), the sliding sheet (10) and the electromagnet form a conductive path.
2. The concrete compressive strength field test equipment of claim 1, characterized in that:
the test box is characterized in that one end of the test box (1) is provided with a registration groove, the second rack (12) is arranged in the registration groove in a sliding mode, and one end of the second rack (12) can penetrate through the registration groove and is arranged on the outer side of the test box (1).
3. The concrete compressive strength field test equipment of claim 1, characterized in that: when the backing plate (14) is in a horizontal position, the outer wall of the upper end of the backing plate (14) and the bottom surface of the inner wall of the test box (1) are in the same horizontal plane.
4. The concrete compressive strength field test equipment of claim 1, characterized in that: the outer wall of the backing plate (14) is smooth.
5. The concrete compressive strength field test equipment of claim 1, characterized in that: one end of the first sliding block (19) is conical, and the conical surface of the first sliding block (19) is arranged inside the second sliding groove (17).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110183007.1A CN113075031B (en) | 2021-02-08 | 2021-02-08 | Concrete compressive strength field test equipment |
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| CN202110183007.1A CN113075031B (en) | 2021-02-08 | 2021-02-08 | Concrete compressive strength field test equipment |
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| CN114184478B (en) * | 2022-02-16 | 2022-06-03 | 常州市迈特装饰材料有限公司 | Decorative board compressive strength detection device for partition wall |
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| CN110887735A (en) * | 2019-12-18 | 2020-03-17 | 衡水积土科技有限公司 | Quick detection device of concrete strength |
| CN211477865U (en) * | 2020-01-11 | 2020-09-11 | 广西云鹰建材有限公司 | Concrete compressive strength detection device |
| CN111208011A (en) * | 2020-02-26 | 2020-05-29 | 王琰 | Coal ash evaporates presses aerated concrete block intensity detection device |
| CN111257127A (en) * | 2020-04-10 | 2020-06-09 | 浙江中信检测有限公司 | Concrete compressive strength detection device with double detection cavities |
| CN111307630A (en) * | 2020-04-22 | 2020-06-19 | 徐东清 | Device and method for detecting impact resistance of concrete |
| CN111398047A (en) * | 2020-05-26 | 2020-07-10 | 福州晋安尧琦侗科技有限公司 | Detection apparatus for concrete piece compressive strength |
| CN212483199U (en) * | 2020-06-30 | 2021-02-05 | 佛山市南海通达混凝土有限公司 | Anti-splashing concrete pressure testing machine |
| CN112179767A (en) * | 2020-09-14 | 2021-01-05 | 江苏沃联新材料科技有限公司 | Equipment for determining compressive strength of autoclaved aerated concrete block |
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