A concrete seamless floor strength testing apparatus and method of operation thereof

Abstract

The application relates to the field of concrete testing, in particular to a concrete seamless floor strength testing device and an operating method thereof. The concrete seamless floor strength testing device comprises a mounting frame, a moving driving part one, a connecting table one and a dynamic rebound apparatus; the upper end of the mounting frame is provided with the moving driving part one; the driving end of the moving driving part one is provided with the connecting table one, and the moving driving part one controls the up-down movement of the connecting table one; three dynamic rebound apparatuses are arranged on the connecting table one; the device further comprises a moving driving part two, a connecting table two and a cylinder; the connecting table one is provided with the moving driving part two; the driving end of the moving driving part two is provided with the connecting table two; three cylinders are arranged on the connecting table two; three groups of concrete seamless floor strength data are collected by the three dynamic rebound apparatuses for parallel comparison, so that the error is reduced, and the test area of the dynamic rebound apparatus is protected by the cylinder.

Description

Technical Field

[0001] This invention relates to the field of concrete testing, and more particularly to a test device for the strength of seamless concrete flooring and its operating method. Background Technology

[0002] Flooring refers to the surface that has been treated with specific materials and processes to achieve certain decorative and functional properties. Currently, after the construction of seamless concrete flooring is completed, its strength needs to be tested, and the dynamic rebound method is a common testing method.

[0003] The dynamic rebound method measures the hardness of concrete surfaces by conducting multi-point tests using a dynamic rebound hammer. The dynamic rebound hammer contains an impact hammer and a spring. The spring drives the impact hammer to strike the concrete surface vertically, causing localized deformation and absorbing some of the hammer's kinetic energy. The remaining energy causes the hammer to rebound, and a scale marks the distance traveled on the scale. This rebound value indicates how much kinetic energy the concrete absorbed, thus determining the concrete's hardness. The dynamic rebound hammer is widely used because it allows for rapid measurement of concrete surface hardness.

[0004] For example, Chinese patent CN118190680A discloses a concrete pavement strength testing device. It can calculate the elastic force of the spring in the dynamic rebound hammer when compressed by pressure and displacement sensors, thereby determining whether the spring needs to be replaced. It can also determine the influence of different temperatures and humidity on the spring elasticity by calculating the spring elasticity, thereby eliminating the error in measuring the hardness of concrete under different environments. However, it still has the following defects: it only sets up one set of dynamic rebound hammers for testing, the data is single, cannot be compared in parallel, and is prone to errors. If multiple sets of data need to be collected, the testing equipment needs to be moved frequently, which is quite troublesome. Summary of the Invention

[0005] To overcome the shortcomings of existing floor strength testing equipment that only collects single data, this invention provides a seamless concrete floor strength testing device and its operation method.

[0006] Technical Solution: A concrete seamless floor strength testing device includes a mounting frame, a first moving drive component, a first connecting platform, and dynamic rebound hammers. The first moving drive component is mounted on the upper end of the mounting frame. The first connecting platform is mounted on the driving end of the first moving drive component, and the first moving drive component controls the up-and-down movement of the first connecting platform. Three dynamic rebound hammers are mounted on the first connecting platform. The device also includes a second moving drive component, a second connecting platform, and cylinders. The second moving drive component is mounted on the first connecting platform. The second connecting platform is mounted on the driving end of the second moving drive component. Three cylinders are mounted on the second connecting platform. Three sets of concrete seamless floor strength data are collected using the three dynamic rebound hammers for parallel comparison to reduce errors. Simultaneously, the cylinders protect the testing area of ​​the dynamic rebound hammers.

[0007] As an improvement to the above solution, a rotary drive component is installed at the lower part of the mounting bracket; three connecting blocks are installed at the drive end of the rotary drive component; a pressure sensor is installed on each connecting block, and the pressure sensor is driven by the rotary drive component to move to the bottom of the dynamic rebound spring to perform calibration and detection on the internal spring of the dynamic rebound spring.

[0008] As an improvement to the above solution, a rotary drive component II is installed on the outer shell of each dynamic rebound device; a push plate is installed on the drive end of each rotary drive component II; a vertically telescopic airbag is installed on the outer side of each cylinder; the air outlet of the airbag extends into the cylinder; the push plate can squeeze the airbag downward.

[0009] As an improvement to the above solution, a damping spring rod is connected between the inner upper wall and the inner lower wall of the airbag.

[0010] As an improvement to the above solution, a limiting frame is installed on the other side of the exterior of each cylinder, and the limiting frame can limit the push plate.

[0011] As an improvement to the above solution, each of the cylinders has a notch at its lower end for blowing out dust, and the air outlet of each airbag is aligned with a notch.

[0012] As an improvement to the above scheme, the three gaps are not opposite to each other.

[0013] As an improvement to the above solution, the connecting block can cover the upper opening of the cylinder.

[0014] As an improvement to the above solution, the connecting block can cover the lower opening of the cylinder, and the size of the pressure sensor is smaller than the inner diameter of the cylinder.

[0015] An operating method for a concrete seamless floor strength testing device includes the following steps: Step 1: Control the moving drive component 2 to drive the connecting platform 2 downwards, so that the lower end of the cylinder contacts the surface of the concrete seamless floor to be tested. At this time, the area covered by the cylinder is the test area; Step 2: Control the rotating drive component 1 to drive the three connecting blocks to rotate, so that the connecting blocks and pressure sensors move to the upper surface of the cylinder. Then, control the moving drive component 1 to drive the connecting platform 1 and the dynamic rebound hammer downwards to calibrate and test the spring inside the dynamic rebound hammer; Step 3: Control the rotating drive component 1 to move the connecting blocks and pressure sensors away, so that the dynamic rebound hammer can move downwards, so that the test rod part of the dynamic rebound hammer extends into the cylinder and performs strength testing on the test area covered by the cylinder. Three sets of concrete seamless floor strength data are collected using three dynamic rebound hammers for parallel comparison.

[0016] Beneficial effects: In this invention, three dynamic rebound hammers are used to collect three sets of strength data of seamless concrete flooring for parallel comparison, reducing errors. At the same time, a cylinder is used to protect the test area of ​​the dynamic rebound hammers.

[0017] In this invention, the positional change of the push plate enables it to have the functions of squeezing the airbag to blow away dust and inserting into the limiting frame for auxiliary limiting and fixing. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional structural schematic of the concrete seamless floor strength testing equipment of the present invention;

[0019] Figure 2 The diagram shown is a partial separation state diagram of the concrete seamless floor strength testing equipment of this invention;

[0020] Figure 3 The diagram shown is a three-dimensional structural illustration of the combination of the dynamic rebound spring and the cylinder of the present invention;

[0021] Figure 4 This diagram illustrates the first position change state of the connection block and pressure sensor combination of the present invention.

[0022] Figure 5 The diagram shows a second position change state of the connection block and pressure sensor combination of the present invention.

[0023] The labels in the diagram are as follows: 1-Mounting bracket, 2-Moving drive component one, 3-Connecting platform one, 4-Dynamic rebound device, 5-Moving drive component two, 6-Connecting platform two, 7-Cylinder, 71-Notch, 8-Rotation drive component one, 9-Connecting block, 10-Pressure sensor, 11-Rotation drive component two, 12-Push plate, 13-Airbag, 14-Limiting frame. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: A strength testing device for seamless concrete flooring, such as... Figures 1-5 As shown, the system includes a mounting frame 1, a moving drive component 2, a connecting platform 3, and a dynamic rebound device 4. The moving drive component 2, which is an electrically driven push rod, is mounted on the upper end of the mounting frame 1. The connecting platform 3 is mounted on the driving end of the moving drive component 2. Three dynamically rebound devices 4 are arranged in annularly and evenly on the connecting platform 3. The system also includes a second moving drive component 5, a second connecting platform 6, and a cylinder 7. The second moving drive component 5, which is an electrically driven push rod, is mounted on the connecting platform 3. The connecting platform 6 is mounted on the driving end of the second moving drive component 5. Three cylinders 7 are arranged in annularly and evenly on the connecting platform 6.

[0026] The lower part of the mounting bracket 1 is equipped with a rotary drive component 8, which is a DD motor; the drive end of the rotary drive component 8 is equipped with three annularly distributed connecting blocks 9; each connecting block 9 is equipped with a pressure sensor 10.

[0027] Each dynamic rebound device 4 has a rotary drive component 2 11 installed on its outer shell. The rotary drive component 2 11 is a DD motor. Each rotary drive component 2 11 has a push plate 12 installed at its drive end. Each cylinder 7 has a vertically telescopic airbag 13 installed on its outer side. The air outlet of the airbag 13 extends into the cylinder 7.

[0028] A damping spring rod is connected between the inner upper wall and the inner lower wall of the airbag 13 for resetting the airbag 13.

[0029] A limiting frame 14 is installed on the other side of the exterior of each of the cylinders 7.

[0030] Each of the cylinders 7 has a notch 71 at its lower end for blowing out dust, and the air outlet of each airbag 13 is aligned with a notch 71.

[0031] The three notches 71 are not opposite to each other, so that the blown dust will not impact each other and cause dust to rise.

[0032] The connecting block 9 can cover the upper opening of the cylinder 7.

[0033] In this embodiment, the mounting frame 1 is mounted on the external mobile trolley, allowing the invention to move to the designated test area. First, the moving drive component 2 5 drives the connecting platform 2 6 downwards, so that the lower end of the cylinder 7 contacts the surface of the seamless concrete floor to be tested. At this time, the position covered by the cylinder 7 is the test area. Since the spring in the dynamic rebound hammer 4 needs to be calibrated and tested first, the rotating drive component 1 8 is then controlled to drive the three connecting blocks 9 to rotate. The pressure sensor 10 follows the rotation of the connecting blocks 9, causing the connecting blocks 9 and the pressure sensor 10 to move to the upper surface of the cylinder 7. Figure 4 The state changes shown are then controlled by the rotation drive component 2 11 to drive the push plate 12 to rotate above the airbag 13. Then, the movement drive component 1 2 is controlled to drive the connecting platform 1 3 and the dynamic rebounder 4 to move downward. Since the cylinder 7 needs to remain stationary, the movement drive component 2 5 will synchronously retract during the downward movement of the connecting platform 1 3. During the downward movement of the dynamic rebounder 4, the test rod of the dynamic rebounder 4 contacts the pressure sensor 10, and then continues to move downward a specified distance, causing the test rod of the dynamic rebounder 4 to retract inward, compressing the internal spring of the dynamic rebounder 4. The pressure sensor 10 displays the pressure on the test rod of the dynamic rebounder 4. By cooperating with the movement drive component 1 2 to drive the dynamic rebounder 4 to move a fixed distance, the elastic coefficient data of the internal spring of the dynamic rebounder 4 can be calculated, thereby performing calibration and testing on the spring inside the dynamic rebounder 4.

[0034] Furthermore, during this process, the push plate 12 moves downward following the dynamic rebound device 4, causing the push plate 12 to move downward and squeeze the airbag 13. This causes the gas in the airbag 13 to be sprayed out onto the test area covered by the cylinder 7, cleaning the dust from the test area covered by the cylinder 7. The dust is blown away and discharged from the notch 71 of the cylinder 7. Thus, by using the downward movement of the dynamic rebound device 4 in conjunction with the design of the airbag 13, the dust in the test area is blown away, replacing the need to use an air pump to blow away dust in the prior art. This reduces the use and handling of mechanical equipment. The airbag 13 of the present invention is lighter and easier for personnel to move.

[0035] Furthermore, when blowing away dust from the test area, the connecting block 9 covers the upper surface of the cylinder 7, making the cylinder 7 completely closed, with only the notch 71 as the discharge point. This allows the dust to be discharged in a directional manner and prevents it from being blown upwards and adhering to the dynamic rebound meter 4. Compared to the existing technology that directly uses an air pump to blow away dust, which can cause dust to be blown away, the design of this invention has a smaller impact on the test.

[0036] After calibrating and testing the spring inside the dynamic rebound hammer 4, the strength of the seamless concrete floor is formally tested. The control rotation drive component 8 drives the connecting block 9 and pressure sensor 10 to move away, allowing the dynamic rebound hammer 4 to move downwards. This allows the test rod of the dynamic rebound hammer 4 to extend into the cylinder 7 and perform a strength test on the test area covered by the cylinder 7. The test process is common knowledge and will not be described in detail here. In this invention, three dynamic rebound hammers 4 are used to collect three sets of strength data of the seamless concrete floor for parallel comparison to reduce errors. At the same time, the cylinder 7 is used to protect the test area of ​​the dynamic rebound hammer 4.

[0037] Furthermore, before the formal strength test, it is necessary to control the rotation drive component 11 to drive the push plate 12 to rotate and change position, so that the push plate 12 moves away from the airbag 13 and is located above the limiting frame 14. When the dynamic rebound device 4 moves down into the cylinder 7, the push plate 12 moves down synchronously and inserts into the through groove of the limiting frame 14. Thus, the limiting effect of the limiting frame 14 on the push plate 12 is used to assist in fixing the dynamic rebound device 4 and prevent the dynamic rebound device 4 from shaking during the test.

[0038] Example 2: Based on Example 1, such as Figures 1-5 As shown, the connecting block 9 can cover the lower opening of the cylinder 7, and the size of the pressure sensor 10 is smaller than the inner diameter of the cylinder 7.

[0039] After the test, the first movable drive component 2 moves the connecting platform 3 and the dynamic rebound spring 4 upwards to reset. Then, the second movable drive component 5 moves the connecting platform 6 and the cylinder 7 upwards, so that the cylinder 7 covers the test rod portion of the dynamic rebound spring 4. Next, the first rotary drive component 8 moves the connecting block 9 and the pressure sensor 10 to below the dynamic rebound spring 4. At this point, because the cylinder 7 has moved upwards, it is also above the connecting block 9 and the pressure sensor 10. Then, the first movable drive component 2 moves the connecting platform 3 downwards, so that the dynamic rebound spring 4 and the cylinder 7 move downwards synchronously, allowing the lower end of the cylinder 7 to cover the connecting block 9, allowing the pressure sensor 10 to enter the cylinder 7, as shown in the image. Figure 5 As shown, the connecting block 9 covers the lower opening of the cylinder 7, and the housing of the dynamic rebounder 4 covers the upper opening of the cylinder 7, thereby creating a storage space inside the cylinder 7 and providing shielding protection for the test rod part of the dynamic rebounder 4 and the pressure sensor 10.

[0040] Example 3: Based on Example 2, such as Figures 1-5As shown, the operation method of a concrete seamless floor strength testing device includes the following steps: Step 1: Control the moving drive component 2 5 to drive the connecting platform 2 6 to move downwards, so that the lower end of the cylinder 7 contacts the surface of the concrete seamless floor to be tested. At this time, the area covered by the cylinder 7 is the test area; Step 2: Control the rotating drive component 1 8 to drive the three connecting blocks 9 to rotate, so that the connecting blocks 9 and the pressure sensor 10 move to the upper surface of the cylinder 7. Then, control the moving drive component 1 2 to drive the connecting platform 1 3 and the dynamic rebound hammer 4 to move downwards, and perform calibration and testing on the spring inside the dynamic rebound hammer 4; Step 3: Control the rotating drive component 1 8 to move the connecting blocks 9 and the pressure sensor 10 away, so that the dynamic rebound hammer 4 can move downwards, so that the test rod part of the dynamic rebound hammer 4 extends into the cylinder 7 and performs strength testing on the test area covered by the cylinder 7. Three sets of concrete seamless floor strength data are collected using three dynamic rebound hammers 4 for parallel comparison.

[0041] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A kind of concrete seamless terrace strength test equipment, including mounting bracket (1), mobile drive piece one (2), connecting table one (3) and dynamic rebound instrument (4);The upper end of the mounting bracket (1) is installed with mobile drive piece one (2);The drive end of the mobile drive piece one (2) is installed with connecting table one (3), and mobile drive piece one (2) controls the up and down movement of connecting table one (3);Three dynamic rebound instruments (4) are installed on the connecting table one (3);Its characterized in that, It also includes mobile drive two (5), connecting table two (6) and cylinder (7); the connecting table one (3) is installed with mobile drive two (5); the drive end of mobile drive two (5) is installed with connecting table two (6); connecting table two (6) is installed with three cylinders (7); three groups of concrete seamless floor strength data are collected by three dynamic rebound hammers (4) to make parallel contrast, reduce error, and the test area of dynamic rebound hammer (4) is protected by cylinder (7); The lower part of the mounting frame (1) is installed with a rotary drive one (8); the drive end of the rotary drive one (8) is installed with three connecting blocks (9); one pressure sensor (10) is installed on each connecting block (9) respectively; the pressure sensor (10) is driven by rotary drive one (8) to move to the lower part of dynamic rebound hammer (4) to detect and correct the internal spring of dynamic rebound hammer (4); One rotary drive two (11) is installed on the shell of each dynamic rebound hammer (4) respectively; one push plate (12) is installed on the drive end of each rotary drive two (11) respectively; one vertical telescopic air bag (13) is installed on the outer side of each cylinder (7) respectively; the air outlet of air bag (13) penetrates into cylinder (7); the push plate (12) can extrude air bag (13) downward; One limiting frame (14) is installed on the other outer side of each cylinder (7) respectively; the limiting frame (14) can limit push plate (12); One notch (71) for blowing dust is formed on the lower end of each cylinder (7) respectively; the air outlet of each air bag (13) is aligned with one notch (71) respectively.

2. A device for testing the strength of a concrete seamless floor according to claim 1, characterized in that The inner upper wall and the inner lower wall of air bag (13) are connected with damping spring rod.

3. A device for testing the strength of a concrete seamless floor according to claim 1, wherein The three notches (71) are not opposite to each other.

4. The apparatus for testing the strength of a concrete seamless floor as set forth in claim 1, wherein The connecting block (9) can cover the lower end opening of cylinder (7), and the size of pressure sensor (10) is smaller than the inner wall diameter of cylinder (7).

5. A method of testing a concrete seamless floor strength testing apparatus, suitable for use with a concrete seamless floor strength testing apparatus as claimed in claim 4, characterised by, It includes the following steps: Step one: control mobile drive two (5) to drive connecting table two (6) to move downward, so that the lower end of cylinder (7) contacts with the surface of the concrete seamless floor to be tested; at this time, the position covered by cylinder (7) is the test area; Step two: control rotary drive one (8) to drive three connecting blocks (9) to rotate, so that connecting block (9) and pressure sensor (10) move to the upper end surface of cylinder (7), then control mobile drive one (2) to drive connecting table one (3) and dynamic rebound hammer (4) to move downward to correct and detect the spring in dynamic rebound hammer (4); Step three: control rotary drive one (8) to drive connecting block (9) and pressure sensor (10) to move away, so that dynamic rebound hammer (4) can move downward, the test rod part of dynamic rebound hammer (4) extends into cylinder (7) and tests the strength of the test area covered by cylinder (7); three groups of concrete seamless floor strength data are collected by three dynamic rebound hammers (4) to make parallel contrast.

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