A concrete detection device for building construction

Abstract

The application relates to the technical field of building construction detection equipment, and discloses a concrete detection equipment for building construction, which comprises a foundation base serving as the base support of the equipment and used for collecting detection objects, a detection box fixedly installed on the top of the foundation base and used for providing installation space for a detection structure, a water injection pressure regulating mechanism fixedly installed on the top end of the detection box and used for pressurized water injection on the to-be-detected concrete to accelerate the water seepage detection rate, and a light curtain detection mechanism fixedly installed on the inner upper side of the detection box and used for clamping the to-be-detected concrete and changing the cold and hot environment to detect the water permeability. The light curtain detection mechanism can quickly detect the water permeability, simultaneously simulate the concrete in the cold and hot environment, make the detection result more comprehensive, utilize the water seepage by means of a water drop detection mechanism, effectively utilize the resources in the detection process, and avoid repeated work.

Description

Technical Field

[0001] This invention relates to the field of building construction testing equipment technology, specifically to a concrete testing device for building construction. Background Technology

[0002] Concrete is a general term for engineering composite materials that bind aggregates together with cementing materials. The term concrete usually refers to cement concrete, also known as ordinary concrete, which is made by mixing cement as cementing material, sand and stone as aggregates, and water in a certain proportion. Currently, the impermeability of concrete refers to the ability of the materials used in the structure to resist the penetration of water or other liquids (light oil, heavy oil) under pressure. It is an important indicator for evaluating the quality and durability of concrete, and it is also a mandatory inspection indicator for the strict quality control of concrete by various engineering quality supervision stations.

[0003] Currently, concrete permeability testing is mainly conducted in laboratories, which is particularly efficient for testing individual concrete units and has high overall accuracy. However, due to the limitations of the laboratory environment, permeability testing is usually only performed on concrete at room temperature, which cannot simulate concrete under hot and cold environments. This results in limited and incomplete test results, and the comparison between tests is not very intuitive. Furthermore, existing concrete permeability testing devices do not detect and utilize the seeping water, which fails to effectively utilize resources during the testing process and leads to repeated operations for the same test, complicating the testing process.

[0004] Based on the above analysis, in order to better detect the water permeability of concrete, the present invention provides a concrete testing device for building construction, which improves the shortcomings of the existing technology in detecting the water permeability of concrete. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a concrete testing device for building construction. This device solves the problems of existing concrete testing equipment, which cannot simulate concrete under hot and cold environments when testing for water permeability, resulting in limited and incomplete test results. Furthermore, it fails to detect and utilize the seeping water, thus failing to effectively utilize resources during the testing process and leading to repeated operations for the same test, which complicates the testing steps.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a concrete testing device for building construction, comprising:

[0007] The foundation serves as the basic support for the equipment and is also used to collect the samples for testing.

[0008] The testing box is fixedly installed on top of the foundation to provide installation space for the testing structure;

[0009] The water injection and pressure regulating mechanism is fixedly installed on the top of the test box and is used to pressurize and inject water into the concrete to be tested, thereby accelerating the seepage detection rate.

[0010] A light curtain detection mechanism is fixedly installed inside the upper side of the detection box. It is used to clamp the concrete to be tested and to detect water permeability by changing the hot and cold environment. The light curtain detection mechanism includes an injection box. The bottom of the injection box is fixedly connected to a placement frame. The left and right sides of the placement frame are provided with mirror openings. The lower part of the left placement frame is fixedly installed with a detection light curtain, and the upper part of the right placement frame is fixedly installed with a detection light curtain. The number of water droplets is recorded by using the vertically staggered detection light curtains.

[0011] The dripping water detection mechanism is fixedly installed inside the lower side of the detection box to collect and re-detect dripping water droplets and identify the state of concrete corrosion.

[0012] Preferably, the water injection pressure regulating mechanism includes a water injection tank, with cylinders fixedly installed on both the left and right sides of the water injection tank. The telescopic ends of the cylinders are respectively fixedly installed on the left and right sides of the pressure plate. The bottom left and right sides of the pressure plate are fixedly connected to one end of a piston rod. The other end of the piston rod passes through the top of the water injection tank and is fixedly connected to the top of the sealing piston plate. A water injection head is fixedly installed at the bottom of the water injection tank. Water storage tanks are fixedly connected to both the left and right sides of the water injection tank. The outlets of the water storage tanks are connected to the lower inlet of the water injection tank via a water pump. A solenoid valve is installed on the pipeline for water input. A pressure relief valve and a water pressure detector are installed at the rear of the water injection tank.

[0013] Preferably, the light curtain detection mechanism includes two sets of upper and lower support columns. Each support column has a sliding groove on its inward side. Sliding blocks are slidably connected to the left and right sides of the sliding groove. The adjacent sides of the sliding blocks are fixedly connected to the front and rear ends of the receiving block, respectively. The adjacent sides of the receiving block are fixedly connected to the upper and lower sides of the injection box, respectively. Ceramic clamps are fixedly installed on the inward side of the injection box. Gas-gathering hoods are fixedly installed on the outward side of the injection box. Gas-venting valves are installed on the upper part of the outward side of the gas-gathering hoods.

[0014] Preferably, a waist frame is fixedly connected to the lower part of the outer side of the gas gathering hood, and convex lenses are provided on the upper and lower sides of the inner side of the waist frame. The height of the lower convex lens is parallel to the corresponding detection light curtain.

[0015] Preferably, the middle part of the lower slider is threadedly connected to the left and right sides of the double-ended threaded rod, and the middle part of the upper slider is slidably connected to the left and right sides of the stabilizing rod. One end of the front double-ended threaded rod is fixedly connected to a drive wheel, and one end of the rear double-ended threaded rod is fixedly connected to a driven wheel. The drive wheel is connected to the driven wheel via a belt. The outer side of the drive wheel is fixedly connected to the output end of the first drive motor. The other ends of the double-ended threaded rods are rotatably connected to the lower left inner wall of the detection box. The two ends of the stabilizing rod are respectively connected to the upper left and right inner walls of the detection box.

[0016] Preferably, a connecting frame is fixedly connected to the rear of the outer side of the placement frame, and a second drive motor is fixedly installed on the lower outer side of the connecting frame. The output end of the second drive motor passes through the connecting frame and is fixedly connected to one end of the gear. The bottom end of the placement frame is slidably connected to the left and right sides of the top end of the platform plate. A first rack is fixedly installed on the left and right sides of the bottom end of the platform plate. The gear meshes with the first rack. An electric telescopic rod is fixedly installed at the front and rear ends of the top end of the platform plate. A placement platform is fixedly connected to the telescopic end of the electric telescopic rod. A pressure detector is fixedly installed on the right side of the bottom end of the placement platform. A concrete sample is placed on the top of the placement platform.

[0017] Preferably, the dripping water detection mechanism includes a detection platform. A second rack is provided in the inner grooves on both the left and right sides of the top of the detection platform. A collection funnel is fixedly installed on the upper inner side of the detection platform, and a first conveying device is fixedly installed in the middle inner side. A high-speed miniature camera is fixedly installed on the lower left side of the collection funnel. Magnetic suction plates are equidistantly arranged on the belt of the first conveying device, and test strips are provided on the outer surface of each magnetic suction plate. A side groove is provided on the inner right side wall of the detection platform, and an electric push rod is fixedly installed on the inner right side wall of the side groove. A pick is fixedly connected to the telescopic end of the electric push rod. A second conveying device is fixedly installed on the lower right side of the inner side of the detection platform. Connecting blocks are fixedly connected to the left and right sides of the bottom of the detection platform. The second rack meshes with a gear.

[0018] Preferably, a heating device is fixedly connected to the upper left and right sides of the testing box, and a cooling device is also fixedly installed thereon. A cooling device is provided at the lower part of the heating device. Both the heating device and the cooling device are connected to the corresponding gas-gathering hood through pipes that pass through the testing box. A one-way valve is provided on each of the pipes.

[0019] Preferably, the left and right sides of the foundation are provided with casters, the rear end of the foundation is provided with a collection cabinet, the middle of the left and right sides of the detection box is fixedly installed with a protective box, the upper inside of the protective box is fixedly installed with a receiving light curtain, the middle inner wall of the left and right sides of the detection box is provided with a light sensing detection device, and the rear end of the detection box is fixedly installed with a connecting frame.

[0020] Preferably, a water tank is fixedly connected to the top of the testing box, the upper and lower parts of the left and right ends of the testing box are respectively connected to the two ends of the support column, and connecting blocks are slidably connected to the inner walls of the left and right sides of the bottom end of the testing box.

[0021] Working principle: The concrete permeability test of this construction concrete testing equipment is performed using the following steps:

[0022] Step 1: First, prepare the processed concrete sample and place it into the test box with the open door. Then, place it on the placement platform. Then, start the first drive motor to drive the drive wheel to rotate. The drive wheel then drives the driven wheel to rotate synchronously through the belt. Then, the drive wheel and the driven wheel drive their respective connected double-threaded rods to rotate, which in turn drives the sliders on both sides of the lower part to move. This causes the sliders to drive the clamping components on both sides, which consist of a receiving block, an injection box, a gas hood, a ceramic clamping plate, and a gas venting valve, to move inward and clamp the concrete sample placed inside. This completes the first step of the testing process.

[0023] Step 2: After the concrete sample is clamped and fixed in the first step, when there is no pressure on the placement platform, the pressure detector connected to its lower part senses the absence of pressure. The pressure detector then receives the signal and transmits it to the PLC, which controls the electric telescopic rod to descend, thereby driving the placement platform to descend and freeing it from the constraint range of the lower support column. At the same time, the second drive motor is also delayed in starting. The second drive motor drives the gear to rotate, which in turn drives the platform plate connected to the first rack to move backward, thereby displacing the entire placement platform backward. This also facilitates the forward movement of the drip detection mechanism. The two move back and forth without interfering with each other, which also facilitates subsequent testing.

[0024] Step 3: After completing the preparations in Step 1 and Step 2, pressurize the concrete sample with water through the water injection and pressure regulating mechanism. Water is drawn from the water storage tank by a water pump and enters the water injection tank. Then, the cylinder drives the connected pressure plate to descend. The pressure plate then drives the piston column and the connected sealing piston plate to squeeze the water entering the lower part of the water injection tank. At the same time, the water pressure is controlled by the pressure relief valve and the water pressure detector to maintain a constant pressure difference. The squeezed water is then injected into the concrete sample through the water injection head, thus completing the water injection treatment and accelerating the water seepage state of the concrete sample.

[0025] Step 4: After water seeps out of the concrete sample, the dripping water droplets will be detected by the detection light curtain installed at the top and bottom of the placement rack at the bottom of the injection box. The number of dripping water droplets within a limited time, such as one hour, will be recorded to determine the water seepage status of the concrete sample. Similarly, other concrete samples will be placed in for water seepage testing, and the number of dripping water will be observed over the same time. The two concrete samples can be compared with each other, and multiple sets of concrete samples can also be added for comparison. This completes the water seepage test and comparison of the concrete samples. The test results are clear at a glance, and the test operation process is simple and convenient.

[0026] Step 5: Following the steps in Step 4, the permeability of concrete samples under different scenarios can be tested. Hot air is injected into the injection box using a heating device and pipeline. The injection box is made of insulating material, so the hot air will not escape. The hot air will be conducted through the ceramic clamps connected to its inner side. The ceramic clamps are made of ceramic material, which has significant thermal and cold conductivity, thus keeping the concrete sample held in a high-temperature state. At this time, the same operation as in Step 4 is performed to detect and record the water seepage dripping state. After the test is completed, the hot air is discharged through the vent valve. Similarly, by using a cooling device to cool the concrete sample, the water seepage dripping state of the concrete sample at a low temperature can be detected, just like the heating process described above. This allows for comparison with other concrete samples to understand the permeability of different types of concrete samples.

[0027] Step 6: When the concrete sample is being tested for water seepage, the light emitted from the detection light curtain is refracted by convex lenses on both sides through a telescope and enters the receiving light curtain. When there are water droplets, there will be a brief break in the light. The photosensitive detection device will detect the light fluctuation and will not perform any further operations. When the concrete sample is not seeping, the detection light curtain will not detect water droplets for a long time. At this time, the photosensitive detection device will not detect the light fluctuation and will transmit the signal to the PLC. Then, the one-way valve will automatically open to heat and cool the concrete sample in sequence, thus performing water seepage detection treatment in hot and cold states.

[0028] Step 7: Simultaneously, the seeping water drips down after soaking the entire concrete sample. Testing this water effectively reflects the sample's pH value and sulfate attack, serving as a diagnostic indicator. Therefore, a drip detection mechanism is used to collect and test the dripping water. The dripping water is collected through a funnel with a valve at the bottom. The collected droplets fall onto a first conveyor below, where they are quickly detected by test paper attached to a magnetic plate. A high-speed miniature camera installed below the funnel monitors the dripping water. Each detected droplet moves the first conveyor a short distance, and so on, monitoring the dripping water over a period of time. Then, the valve at the bottom of the funnel is closed to collect subsequent droplets. Once the magnetic plate on the first conveyor has completed one rotation, an electric pusher moves a pick to remove the magnetic plate, causing it to fall onto a second conveyor for transport to the outside, where it is collected in a collection cabinet for further testing.

[0029] This invention provides a concrete testing device for building construction. It has the following beneficial effects:

[0030] 1. This invention uses pressurized water injection. When water seeps out of the concrete sample, the dripping water droplets are detected by a detection light curtain. The number of dripping water droplets is recorded within a limited time to determine the water seepage state of the concrete sample. Multiple sets of concrete samples can also be added for comparison. The detection results are clear at a glance, and the detection process is simple and convenient.

[0031] 2. This invention uses a heating device and a cooling device to test the water permeability of concrete samples under different conditions. By using the heating device and pipeline to inject hot air into the injection box, the hot air is conducted to the concrete sample through the ceramic clamp, thereby detecting and recording the water dripping state under high temperature conditions. Similarly, the cooling device is used to detect the water dripping state under low temperature conditions, thereby comparing with other concrete samples to understand the water permeability of different types of concrete samples.

[0032] 3. This invention utilizes the principle of a telescope. When the concrete sample is in a non-permeable state, the detection light curtain cannot detect water droplets for a long time. At this time, the light-sensing detection device cannot detect light fluctuations and transmits the signal to the PLC. Subsequently, the one-way valve is automatically opened to sequentially heat and cool the heating and cooling devices to perform water seepage detection on the concrete sample in both hot and cold states. This automated detection is more efficient.

[0033] 4. This invention collects seeping water droplets through a collection funnel and allows them to drip onto magnetic plates arranged on a first conveying device. The water droplets are then quickly detected by test paper on the magnetic plates and subsequently quickly removed and collected. This facilitates the detection of pH value and sulfate erosion in concrete samples. Attached Figure Description

[0034] Figure 1 This is a perspective view of the present invention;

[0035] Figure 2 This is a rear view of the present invention;

[0036] Figure 3 This is a schematic diagram of the internal structure of the detection box of the present invention;

[0037] Figure 4 This is a schematic diagram of the disassembled structure of the present invention;

[0038] Figure 5 This is a schematic diagram of the internal structure of the water injection pressure regulating mechanism of the present invention;

[0039] Figure 6 This is a schematic diagram of the rear structure of the water injection pressure regulating mechanism of the present invention;

[0040] Figure 7 This is a schematic diagram of the foundation structure of the present invention;

[0041] Figure 8 This is a schematic diagram of the right side of the external structure of the detection box of the present invention;

[0042] Figure 9 This is a schematic diagram of the left side of the external structure of the detection box of the present invention;

[0043] Figure 10 This is a schematic diagram of the upper clamping structure of the light curtain detection mechanism of the present invention;

[0044] Figure 11 This is a schematic diagram of the internal structure of the upper clamping structure of the light curtain detection mechanism of the present invention;

[0045] Figure 12 This is a schematic diagram of the injection box structure of the present invention;

[0046] Figure 13 This is a front view of the injection box structure of the present invention;

[0047] Figure 14 This is a schematic diagram of the lower placement structure of the light curtain detection mechanism of the present invention;

[0048] Figure 15 This is a schematic diagram of the motion state of the lower placement structure of the light curtain detection mechanism of the present invention;

[0049] Figure 16 This is a schematic diagram of the drip detection mechanism of the present invention;

[0050] Figure 17 This is a schematic diagram of the internal structure of the side groove of the present invention.

[0051] The components include: 1. Foundation; 2. Detection box; 3. Water injection and pressure regulating mechanism; 301. Water injection tank; 302. Cylinder; 303. Pressure plate; 304. Piston column; 305. Sealing piston plate; 306. Water injection head; 307. Water storage tank; 308. Pressure relief valve; 309. Water pressure detector; 4. Light curtain detection mechanism; 401. Frame; 402. Slide groove; 403. Slider; 404. Receiving block; 405. Injection box; 406. Gas gathering hood; 407. Ceramic clamp; 408. Gas relief valve; 409. Double-ended threaded rod; 410. Drive wheel; 411. Belt; 412. Driven wheel; 413. First drive motor; 414. Stabilizing rod; 415. Placement rack; 416. Mirror port; 417. Detection light curtain; 418. Waist frame; 419. Convex lens; 420. 421. Connecting frame; 422. Second drive motor; 423. Gear; 424. First rack; 425. Platform plate; 426. Electric telescopic rod; 427. Placement table; 428. Pressure detector; 429. Heating device; 430. Cooling device; 5. One-way valve; 5. Drip detection mechanism; 501. Detection table; 502. Second rack; 503. Collection funnel opening; 504. High-speed miniature camera; 505. First conveying device; 506. Magnetic suction plate; 507. Test paper; 508. Side groove; 509. Electric push rod; 510. Chisel block; 511. Second conveying device; 512. Connecting block; 6. Receiving light curtain; 7. Light sensing detection device; 8. Protective box; 9. Moving wheels; 10. Collection drawer; 11. Connecting frame; 12. Concrete sample. Detailed Implementation

[0052] 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.

[0053] Example:

[0054] Please see the appendix Figure 1 -Appendix Figure 17This invention provides a concrete testing device for building construction, comprising: a foundation 1, which serves as the basic support for the device and is used to collect the material to be tested; a testing box 2, which is fixedly installed on the top of the foundation 1 to provide installation space for the testing structure; a water injection and pressure regulating mechanism 3, which is fixedly installed on the top of the testing box 2 to pressurize and inject water into the concrete to be tested, thereby accelerating the rate of water seepage detection; and a light curtain detection mechanism 4, which is fixedly installed on the upper side inside the testing box 2 to clamp the concrete to be tested and to detect water seepage under varying hot and cold environments. The light curtain detection mechanism 4 includes an injection box 405, with a placement frame 415 fixedly connected to the bottom of each injection box 405. Mirror ports 416 are provided on both the left and right sides of the placement frame 415. A detection light curtain 417 is fixedly installed on the lower part of the left placement frame 415 and on the upper part of the right placement frame 415. The number of water droplets is recorded using the vertically staggered detection light curtains 417. The drip detection mechanism 5 is fixedly installed inside the lower side of the detection box 2 and is used to collect and re-detect the dripping water droplets to identify the state of concrete corrosion.

[0055] Please see the appendix Figure 5 -Appendix Figure 6 The water injection pressure regulating mechanism 3 includes a water injection tank 301. Cylinders 302 are fixedly installed on both the left and right sides of the water injection tank 301. The telescopic ends of the cylinders 302 are fixedly installed on the left and right sides of the pressure plate 303, respectively. The bottom left and right sides of the pressure plate 303 are fixedly connected to one end of the piston column 304. The other end of the piston column 304 passes through the top of the water injection tank 301 and is fixedly connected to the top of the sealing piston plate 305. A water injection head 306 is fixedly installed at the bottom of the water injection tank 301. A water storage tank 307 is fixedly connected to both the left and right sides of the water injection tank 301. The outlet of the water storage tank 307 is connected to the lower water inlet of the water injection tank 301 through a water pump. A solenoid valve is installed on the pipeline for water input. A pressure relief valve 308 and a water pressure detector 309 are installed at the rear of the water injection tank 301.

[0056] Specifically, the concrete sample 12 is pressurized and injected with water through the water injection and pressure regulating mechanism 3. Water is drawn from the water storage tank 307 by the water pump and enters the water injection tank 301. Then, the cylinder 302 drives the connected pressure plate 303 to descend. The pressure plate 303 then drives the piston column 304 and the connected sealing piston plate 305 to squeeze the water entering the lower part of the water injection tank 301. At the same time, the water pressure is controlled by the pressure relief valve 308 and the water pressure detector 309 to maintain a constant pressure difference. The squeezed water is then injected into the concrete sample 12 through the water injection head 306, thereby completing the water injection treatment and accelerating the water seepage state of the concrete sample 12.

[0057] Please see the appendix Figure 8 -Appendix Figure 15The light curtain detection mechanism 4 includes two sets of upper and lower support columns 401. Each support column 401 has a sliding groove 402 on its inner side. Each sliding groove 402 has a slider 403 slidably connected to its left and right sides. The sides of the sliders 403 that are close to each other are fixedly connected to the front and rear ends of the receiving blocks 404. The sides of the receiving blocks 404 that are close to each other are fixedly connected to the upper and lower sides of the injection box 405. Each injection box 405 has a ceramic clamp plate 407 fixedly installed on its inner side. Each injection box 405 has a gas gathering hood 406 fixedly installed on its outer side. Each gas gathering hood 406 has a vent valve 408 installed on its upper outer side.

[0058] Furthermore, the middle part of the lower slider 403 is threadedly connected to the left and right sides of the double-ended threaded rod 409, and the middle part of the upper slider 403 is slidably connected to the left and right sides of the stabilizing rod 414. One end of the front double-ended threaded rod 409 is fixedly connected to the driving wheel 410, and one end of the rear double-ended threaded rod 409 is fixedly connected to the driven wheel 412. The driving wheel 410 is connected to the driven wheel 412 through the belt 411. The outer side of the driving wheel 410 is fixedly connected to the output end of the first drive motor 413. The other end of the double-ended threaded rod 409 is rotatably connected to the lower left inner wall of the detection box 2. The two ends of the stabilizing rod 414 are respectively connected to the upper left and right inner walls of the detection box 2.

[0059] Specifically, by starting the first drive motor 413, the drive wheel 410 is driven to rotate. The drive wheel 410 then drives the driven wheel 412 to rotate synchronously via the belt 411. Subsequently, the drive wheel 410 and the driven wheel 412 synchronously drive their respective connected double-headed threaded rods 409 to rotate, thereby driving the sliders 403 on both sides of the lower part to move. This causes the sliders 403 to drive the clamping components on both sides, consisting of the receiving block 404, the injection box 405, the gas gathering hood 406, the ceramic clamping plate 407, and the venting valve 408, to move inward, clamping the concrete sample 12 placed inside from both sides, thus completing the first step of the testing process of fixing.

[0060] Please see the appendix Figure 13 Each of the outer sides of the gas gathering hood 406 is fixedly connected to a waist frame 418. The upper and lower sides of the waist frame 418 are provided with convex lenses 419. The height of the lower convex lens 419 is parallel to the corresponding detection light curtain 417.

[0061] For further details, please refer to the appendix. Figure 1-4 and attached Figure 7 The left and right sides of the base 1 are provided with casters 9, the rear end of the base 1 is provided with a collection cabinet 10, the left and right sides of the detection box 2 are fixedly installed with protective boxes 8, the upper inside of the protective box 8 is fixedly installed with a receiving light curtain 6, the middle of the left and right sides of the detection box 2 is provided with a light sensing detection device 7, and the rear end of the detection box 2 is fixedly installed with a connecting frame 11.

[0062] Furthermore, a water tank 301 is fixedly connected to the top of the test box 2, and the upper and lower, front and rear sides of the test box 2 are respectively connected to the two ends of the support column 401. Connecting blocks 512 are slidably connected to the inner walls of the left and right sides of the bottom of the test box 2.

[0063] Specifically, when water seeps out of concrete sample 12, the dripping water droplets are detected by the detection light curtain 417 installed at the upper and lower positions in the placement rack 415 at the lower part of the injection box 405. The number of dripping water droplets within a limited time, such as one hour, is recorded to determine the water seepage status of the concrete sample 12. Similarly, other concrete samples 12 are placed in for water seepage testing, and the number of dripping water is observed under the same time control. The two concrete samples 12 are compared with each other, and multiple sets of concrete samples 12 can also be added for comparison. This completes the water seepage test and comparison of the concrete samples 12. The test results are clear at a glance, and the test operation process is simple and convenient.

[0064] More specifically, when the concrete sample 12 is tested for water seepage, the light emitted from the detection light curtain 417 is refracted by the convex lenses 419 on both sides through a telescope and enters the receiving light curtain 6. When there are water droplets, there will be a brief interruption in the light. The photosensitive detection device 7 will detect the light fluctuation and will not perform any further operations. However, when the concrete sample 12 is not in a seepage state, the detection light curtain 417 will not detect water droplets for a long time. At this time, the photosensitive detection device 7 will not detect the light fluctuation and will transmit the signal to the PLC. Then, the one-way valve 430 will be automatically opened to heat and cool the heating device 428 and the cooling device 429 in sequence to perform water seepage detection treatment on the concrete sample 12 in hot and cold states.

[0065] Please see the appendix Figure 14 -Appendix Figure 15 A connecting frame 420 is fixedly connected to the rear of the outer side of the placement frame 415. A second drive motor 421 is fixedly installed on the lower outer side of the connecting frame 420. The output end of the second drive motor 421 passes through the connecting frame 420 and is fixedly connected to one end of the gear 422. The bottom end of the placement frame 415 is slidably connected to the left and right sides of the top end of the platform plate 424. A first rack 423 is fixedly installed on the left and right sides of the bottom end of the platform plate 424. The gear 422 is meshed with the first rack 423. An electric telescopic rod 425 is fixedly installed at the front and rear ends of the top end of the platform plate 424. A placement platform 426 is fixedly connected to the telescopic end of the electric telescopic rod 425. A pressure detector 427 is fixedly installed on the right side of the bottom end of the placement platform 426. A concrete sample 12 is placed on the top end of the placement platform 426.

[0066] Specifically, after the concrete sample 12 is clamped, when there is no pressure on the placement platform 426, the pressure detector 427 connected to its lower part senses the absence of pressure. Subsequently, the pressure detector 427 receives the signal and transmits it to the PLC, which controls the electric telescopic rod 425 to descend, thereby driving the placement platform 426 to descend and freeing it from the constraint range of the lower support column 401. At the same time, the second drive motor 421 is also delayed in starting. The second drive motor 421 drives the gear 422 to rotate, which in turn drives the platform plate 424 connected to the first rack 423 to move backward, thereby displacing the entire placement platform backward. This also facilitates the forward movement of the drip detection mechanism 5. The two move back and forth without interfering with each other, which also facilitates subsequent testing.

[0067] Please see the appendix Figure 8 -Appendix Figure 9 Heating devices 428 are fixedly connected to the upper left and right sides of the test box 2, and cooling devices 429 are also fixedly installed. Cooling devices 429 are installed at the lower part of the heating devices 428. The heating devices 428 and cooling devices 429 are connected to the corresponding gas-gathering hoods 406 through pipes that pass through the test box 2. One-way valves 430 are installed on the pipes.

[0068] Specifically, the water permeability of concrete sample 12 under different scenarios can be tested using the heating device 428 and the cooling device 429. Hot air is injected into the injection box 405 via the heating device 428 and pipelines. The injection box 405 is made of insulating material, preventing heat loss. The hot air is conducted through the ceramic clamp 407 connected to its inner side. The ceramic clamp 407 is made of ceramic material, which has significant thermal and cold conductivity, thus keeping the concrete sample 12 in a high-temperature state. The same operation as in step four is performed to detect and record the water dripping state. After the test, the hot air is discharged through the vent valve 408. Similarly, the cooling device 429 is used for cooling, similar to the heating process, to detect the water dripping state of the concrete sample 12 at a low-temperature state. This allows for comparison with other concrete samples 12 to understand the water permeability of different types of concrete samples 12.

[0069] Please see the appendix Figure 16 -Appendix Figure 17The drip detection mechanism 5 includes a detection platform 501. A second rack 502 is provided on the left and right inner grooves of the top of the detection platform 501. A collection funnel 503 is fixedly installed on the upper inner side of the detection platform 501, and a first conveying device 505 is fixedly installed in the middle inner side. A high-speed miniature camera 504 is fixedly installed on the lower left side of the collection funnel 503. Magnetic suction plates 506 are equidistantly arranged on the belt of the first conveying device 505. Test strips 507 are provided on the outer surface of the magnetic suction plates 506. A side groove 508 is provided on the inner right side wall of the detection platform 501. An electric push rod 509 is fixedly installed on the inner right side wall of the side groove 508. A pick block 510 is fixedly connected to the telescopic end of the electric push rod 509. A second conveying device 511 is fixedly installed on the lower right end of the inner side of the detection platform 501. Connecting blocks 512 are fixedly connected to the left and right sides of the bottom of the detection platform 501. The second rack 502 meshes with a gear 422.

[0070] Specifically, the dripping water is collected and detected using a dripping detection mechanism 5. The dripping water droplets are collected through a collection funnel 503, which has a narrow drip outlet with a valve at the bottom. The collected water droplets then fall onto the first conveying device 505 below, where they are quickly detected by test paper 507 attached to a magnetic suction plate 506. A high-speed miniature camera 504 installed below the collection funnel 503 monitors the dripping water droplets. Each time a drop is detected, the first conveying device 505 is moved a certain distance. This process is repeated for a period of time. Then, the valve at the bottom of the collection funnel 503 is closed to collect subsequent water droplets. After the magnetic suction plate 506 on the first conveying device 505 has completed one revolution of collection, an electric push rod 509 drives a picker block 510 to remove the magnetic suction plate 506 from the first conveying device 505, causing it to fall onto the second conveying device 511 and be transported to the outside for collection by the collection cabinet 10 for further detection.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete testing device for building construction, characterized in that, include: The foundation (1) serves as the basic support for the equipment and is used to collect the test material; The detection box (2) is fixedly installed on the top of the foundation (1) to provide installation space for the detection structure; The water injection pressure regulating mechanism (3) is fixedly installed on the top of the test box (2) and is used to pressurize the concrete to be tested with water to accelerate the seepage detection rate. The light curtain detection mechanism (4) is fixedly installed inside the upper side of the detection box (2) for clamping the concrete to be tested and detecting water permeability by changing the hot and cold environment; the light curtain detection mechanism (4) includes an injection box (405), and a placement frame (415) is fixedly connected to the bottom of the injection box (405). The left and right sides of the placement frame (415) are provided with mirror openings (416). A detection light curtain (417) is fixedly installed on the lower part of the left placement frame (415), and a detection light curtain (417) is fixedly installed on the upper part of the right placement frame (415). The number of water droplets is recorded by using the vertically staggered detection light curtain (417); The light curtain detection mechanism (4) also includes two sets of upper and lower support columns (401). Each support column (401) has a sliding groove (402) on its inner side. Each sliding groove (402) has a slider (403) slidably connected to its left and right sides. The slider (403) is fixedly connected to the front and rear ends of the receiving block (404) on its adjacent side. The receiving block (404) is fixedly connected to the upper and lower sides of the injection box (405) on its adjacent side. Each injection box (405) has a ceramic clamp plate (407) fixedly installed on its inner side. Each injection box (405) has a gas gathering hood (406) fixedly installed on its outer side. Each gas gathering hood (406) has a vent valve (408) installed on its upper outer side. The lower part of the outer side of the gas gathering hood (406) is fixedly connected to a waist frame (418). The upper and lower sides of the waist frame (418) are provided with convex lenses (419). The height of the lower convex lens (419) is parallel to the corresponding detection light curtain (417). Heating devices (428) are fixedly connected to the upper left and right sides of the detection box (2), and cooling devices (429) are also fixedly installed. Cooling devices (429) are provided at the lower part of the heating devices (428). The heating devices (428) and cooling devices (429) are connected to the corresponding gas-gathering hoods (406) through pipes that pass through the detection box (2). One-way valves (430) are provided on the pipes. A dripping water detection mechanism (5) is fixedly installed inside the lower side of the detection box (2) to collect and re-detect dripping water droplets and identify the state of concrete corrosion. The light emitted from the detection light curtain (417) is continuously refracted by the convex lenses (419) on both sides and enters the receiving light curtain (6). When the concrete sample (12) is in a non-permeable state, the detection light curtain (417) cannot detect water droplets for a long time and transmits the signal to the PLC. Then, the one-way valve (430) is automatically opened to heat the heating device (428) and the cooling device (429) in sequence to heat and cool the concrete sample (12) in hot and cold states to detect water seepage.

2. The concrete testing equipment for building construction according to claim 1, characterized in that, The water injection pressure regulating mechanism (3) includes a water injection tank (301). Cylinders (302) are fixedly installed on both the left and right sides of the water injection tank (301). The telescopic ends of the cylinders (302) are fixedly installed on the left and right sides of a pressure plate (303). The bottom left and right sides of the pressure plate (303) are fixedly connected to one end of a piston rod (304). The other end of the piston rod (304) passes through the top of the water injection tank (301) and is fixedly connected to a sealing piston plate (304). At the top of the water tank (305), a water injection head (306) is fixedly installed at the bottom of the water injection tank (301). Water storage tanks (307) are fixedly connected to the left and right sides of the water injection tank (301). The outlet of the water storage tank (307) is connected to the lower water inlet of the water injection tank (301) through a water pump. A solenoid valve is installed on the pipeline for water input. A pressure relief valve (308) and a water pressure detector (309) are installed at the rear of the water injection tank (301).

3. The concrete testing equipment for building construction according to claim 1, characterized in that, The middle part of the lower slider (403) is threadedly connected to the left and right sides of the double-ended threaded rod (409), and the middle part of the upper slider (403) is slidably connected to the left and right sides of the stabilizing rod (414). One end of the front double-ended threaded rod (409) is fixedly connected to the drive wheel (410), and one end of the rear double-ended threaded rod (409) is fixedly connected to the driven wheel (412). The drive wheel (410) is connected to the driven wheel (412) through the belt (411). The outer side of the drive wheel (410) is fixedly connected to the output end of the first drive motor (413). The other end of the double-ended threaded rod (409) is rotatably connected to the lower left inner wall of the detection box (2). The two ends of the stabilizing rod (414) are respectively connected to the upper left and right inner walls of the detection box (2).

4. A concrete testing device for building construction according to claim 2, characterized in that, The placement rack (415) is fixedly connected to the rear of the outward side of each of the following: a connecting frame (420) is fixedly installed on the lower outward side of each of the connecting frames (420); the output end of the second driving motor (421) passes through the connecting frame (420) and is fixedly connected to one end of the gear (422); the bottom end of the placement rack (415) is slidably connected to the left and right sides of the top end of the platform plate (424); the bottom left and right sides of the platform plate (424) are fixedly installed with a first rack (423); the gear (422) meshes with the first rack (423); the front and rear ends of the top end of the platform plate (424) are fixedly installed with an electric telescopic rod (425); the telescopic end of the electric telescopic rod (425) is fixedly connected to a placement platform (426); the right side of the bottom end of the placement platform (426) is fixedly installed with a pressure detector (427); and a concrete sample (12) is placed on the top end of the placement platform (426).

5. A concrete testing device for building construction according to claim 4, characterized in that, The drip detection mechanism (5) includes a detection platform (501). A second rack (502) is provided on the inner grooves of both the left and right sides of the top of the detection platform (501). A collection funnel opening (503) is fixedly installed on the upper inner side of the detection platform (501), and a first conveying device (505) is fixedly installed in the middle inner side. A high-speed miniature camera (504) is fixedly installed on the lower left side of the collection funnel opening (503). Magnetic suction plates (506) are equidistantly arranged on the belt of the first conveying device (505). The outer surface of the magnetic suction plates (506)... The test surface is provided with test paper (507). The inner right side wall of the test platform (501) is provided with a side groove (508). An electric push rod (509) is fixedly installed on the inner right side wall of the side groove (508). A chipping block (510) is fixedly connected to the telescopic end of the electric push rod (509). A second conveying device (511) is fixedly installed on the lower right side of the inner side of the test platform (501). A connecting block (512) is fixedly connected to the left and right sides of the bottom end of the test platform (501). The second rack (502) is meshed with a gear (422).

6. A concrete testing device for building construction according to claim 1, characterized in that, The foundation (1) is provided with casters (9) on the left and right sides. The foundation (1) is provided with a collection cabinet (10) at the rear end. The detection box (2) is fixedly installed with protective boxes (8) in the middle of both the left and right sides. The upper inside of the protective box (8) is fixedly installed with a light receiving curtain (6). The inner wall of the middle of the left and right sides of the detection box (2) is provided with a light sensing detection device (7). The detection box (2) is fixedly installed with a connecting frame (11) at the rear end.

7. A concrete testing device for building construction according to claim 5, characterized in that, The top of the test box (2) is fixedly connected to a water tank (301). The upper and lower parts of the left and right ends of the test box (2) are respectively connected to the two ends of the support column (401). The bottom left and right inner walls of the test box (2) are slidably connected to connecting blocks (512).

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