Visual grouting diffusion device for concrete crack simulation and application method thereof

Abstract

The present application relates to the technical field of concrete crack repair, and particularly relates to a visual grouting diffusion device for concrete crack simulation and an application method thereof, which comprises an experimental box, a cover plate, pumping pipes in communication with the interior of the experimental box, an upper-layer crack sample and a lower-layer crack sample in the experimental box, a down-stroke cylinder on the outer wall of the cover plate, the output end of the down-stroke cylinder movably penetrating through the cover plate and being connected with the upper-layer crack sample, and a plurality of adjusting assemblies on the cover plate for adjusting the inclination angle of the upper-layer crack sample. The present application has the following advantages: the output end of the down-stroke cylinder is connected with the upper surface of the upper-layer crack sample, so that the upper-layer crack sample can be used together with the plurality of adjusting assemblies, the crack sample is moved by the output of the cylinder, the inclination adjustment of the upper-layer crack sample at multiple angles is smoothly realized, and finally the parameters of the crack sample after adjustment are detected by the auxiliary detection device, so that diversified simulation grouting experiments are realized.

Description

Technical Field

[0001] This invention relates to the field of concrete crack repair technology, and in particular to a visual grouting diffusion device for simulating concrete cracks and its application method. Background Technology

[0002] Concrete cracking is a common problem in the construction industry. Existing technologies usually involve related preventive simulation measures. However, cracks often form in unstable shapes, and the solutions typically involve using one method to fill each type of crack. This cycle fails to adequately address the issue of cracks changing shape in practice, leading to delayed or inadequate filling or the inability to quickly find corresponding solutions. Consequently, concrete cracks leak more severely, causing further damage to people and property. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing a visual grouting diffusion device for simulating concrete cracks and its application method. By visually simulating the diffusion of grouting into concrete cracks, this invention solves the problem of untimely response caused by the inability to simulate crack filling in advance in the prior art.

[0004] The objective of this invention is achieved through the following technical solutions:

[0005] A visual grouting diffusion device for simulating concrete cracks includes an experimental chamber and a cover plate for sealing the upper part of the experimental chamber. Pumping pipes communicating with the interior are provided on both sides of the experimental chamber. Upper crack samples and lower crack samples are provided inside the experimental chamber. A pressing cylinder is provided on the outer wall of the cover plate. The output end of the pressing cylinder moves through the cover plate and is ball-jointed with the upper crack sample. Multiple adjustment components for adjusting the tilt angle of the upper crack sample are provided on the cover plate.

[0006] A base plate is provided on the top of the experimental chamber. Clamping strips are bolted to both ends of the base plate, and these two clamping strips are used to fix the upper crack sample. Furthermore, by setting the base plate and the two clamping strips, and by ball-jointing the upper surface of the base plate with the output end of the downward-pressing cylinder, the upper crack sample is stably clamped without needing direct ball-jointing with the output end of the downward-pressing cylinder. This avoids damage to the upper crack sample caused by ball-jointing, thus ensuring the accuracy of the simulation experiment.

[0007] The cover plate is provided with multiple connecting posts. The lower end of the connecting post moves through the cover plate and is ball-jointed with the upper surface of the bottom plate. The outer wall of the upper end of the connecting post is provided with a retaining ring with an outer diameter larger than the outer diameter of the connecting post.

[0008] Furthermore, after the upper crack sample is clamped by the clamping bar, it is driven by the adjustment component in the vertical direction to make tilt adjustment. Multiple connecting columns are set on the cover plate, and the upper outer wall of the connecting column is provided with a retaining ring. The outer diameter of the retaining ring is larger than the outer diameter of the connecting column, which can effectively prevent excessive displacement of the output end of the downward pressure cylinder.

[0009] The number of adjustment components is four, and the four adjustment components are respectively located at the four right angles of the cover plate. Preferably, by setting four adjustment components at the four right angles of the cover plate, the stability of the upper crack sample after the tilt angle adjustment can be guaranteed whether the four adjustment components are adjusted individually or used in combination in two or more.

[0010] The adjustment assembly includes a support plate and a linkage rod. The lower end of the linkage rod movably passes through the cover plate and is hinged to the upper surface of the base plate. A positioning block is fixed on the vertically arranged support plate. A central shaft movably passes through the positioning block and extends horizontally. A rotating rod perpendicular to the cover plate is rotatably arranged on the support plate via a pin. The middle of the rotating rod is connected to the linkage rod via a connecting rod. A clamp is provided at both ends of the rotating rod. Each clamp is provided with a U-shaped clamping block. A U-shaped snap-fit ​​connector is provided on the extension section of the central shaft. The assembly also includes a disc. A follower plate that ball-joints with the snap-fit ​​connector is fixed in the middle of the side wall of the disc. The two clamping blocks are symmetrically distributed along the axis of the disc, and the upper and lower parts of the disc are respectively placed within the U-shaped clamping areas of the two clamping blocks.

[0011] Furthermore, when adjusting the inclination of the upper crack sample, under the support and constraint of the limiting block, the central shaft is pulled in a linear reciprocating motion in the horizontal direction by a manual or electric drive device. The central shaft drives the clamping joint to move in a linear motion. Since the clamping joint is connected to the follower ball, the clamping joint moves in a linear motion while driving the disc to rotate around the hinge point between the clamping joint and the follower rod. This, in turn, drives the clamping block and the rotating rod to move in a circular motion around the pin. By rotating the rotating rod and the connecting rod, the linkage rod hinged to the bottom plate can be driven to move in a linear motion in the vertical direction, thereby realizing the inclination adjustment of the upper crack sample. It should be noted that the central shaft, follower plate, rotating rod, and linkage rod form a multi-link structure, and the linkage rod is hinged to the base plate. The output end of the pressing cylinder is ball-jointed with the base plate, which makes the adjustable range of the base plate relatively large. By adjusting the displacement of the central shaft in the horizontal direction, the overall or local tilt angle of the upper crack sample can be precisely controlled. For example, when two adjustment components on the same diagonal of the cover plate are used together, the central shaft of one adjustment component moves linearly in one direction, while the central shaft of the other adjustment component moves linearly in the opposite direction, thereby raising one end of the base plate and lowering the other end. The specific lifting and lowering displacements can be calculated from the dimensions in the pre-set multi-link structure.

[0012] A backstop block is provided on the lower surface of the positioning block. The lead screw passes through the backstop block and is threaded to it. A chuck is provided at the end of the lead screw away from the disc. The middle part of the chuck is connected to the output end of the stepper motor. Two limit rings are provided at intervals on the end of the central shaft away from the disc, and a part of the chuck is placed in the gap between the two limit rings.

[0013] Furthermore, through precise rotation adjustment of the stepper motor, the chuck drives the two limit rings and the central shaft to perform reciprocating linear motion together, so as to ensure that the tilt adjustment of the upper crack sample is accurate and effective.

[0014] The experimental chamber is made of acrylic material. Preferably, the acrylic experimental chamber is transparent, which ensures that the experimenter can observe the diffusion state of the slurry inside the chamber in real time, and at the same time facilitates the experimenter to quickly adjust the inclination of the upper crack sample.

[0015] In practice, when simulating concrete crack leakage, the experimental personnel adjust the seepage magnitude based on potential seepage problems in reality. They conduct grouting experiments by altering the cracked samples. Using a combination of pressure gauges and adjustment components, they adjust the flow rate and grouting speed in real time to achieve a more realistic simulation and prepare contingency plans in advance. Multiple pressure gauges are evenly distributed on the lower surface of the upper cracked sample and the upper surface of the lower cracked sample. A terminal data control system, such as a PLC control system, is used to control the system. The PLC control system, along with the pre-set pressure gauges, lowering cylinders, and pump connected to the pumping pipe, forms a complete control loop. This allows the pump and adjustment components to execute corresponding actions upon receiving feedback commands, such as adjusting the inclination of the upper cracked sample, changing the grout injection speed or flow rate, thus achieving diversified simulated grouting. It should be further explained that after the cover plate seals the open end of the test chamber, the upper crack sample is first driven down to the required position by the pressure cylinder. The connection between the output end of the pressure cylinder and the cover plate is sealed by the movable sealing ring. The output end of the pressure cylinder is ball-jointed with the upper surface of the upper crack sample, so that the upper crack sample can be used in conjunction with multiple adjustment components to adjust the upper crack sample at multiple angles.

[0016] The advantages of this invention are:

[0017] 1) When simulating the leakage of concrete cracks, the magnitude of the seepage is changed according to the seepage problems that may occur in the actual situation. The concrete crack grouting experiment is simulated by changing the crack sample. The flow rate, grouting speed and other parameters are changed in real time according to the pressure gauge and the tilt angle of the upper crack sample through the joint operation of the adjustment components, so as to achieve a more realistic simulation experiment and prepare actual response plans in advance.

[0018] 2) After the cover plate seals the open end of the test chamber, the upper crack sample is first driven by the pressure cylinder to move down to the required position for the experiment. The connection between the output end of the pressure cylinder and the cover plate is sealed by the movable sealing ring. The output end of the pressure cylinder is ball-jointed with the upper surface of the upper crack sample, so that the upper crack sample can be used with multiple adjustment components to adjust the upper crack sample at multiple angles.

[0019] 3) The central shaft, follower plate, rotating rod and linkage rod form a multi-link structure, and the linkage rod is hinged to the base plate. The output end of the pressing cylinder is ball-jointed with the base plate, which makes the position of the base plate relatively large. By adjusting the displacement of the central shaft in the horizontal direction, the overall or local tilt angle of the upper crack sample can be precisely controlled. Attached Figure Description

[0020] Fig. 1 This is a schematic diagram of the structure of the present invention;

[0021] Fig. 2 This is a schematic diagram of the adjustment component in this invention. Detailed Implementation

[0022] The features and other related features of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate understanding by those skilled in the art:

[0023] like Figs. 1-2 As shown in the figure, each of the markings represents: 1. Experimental chamber; 2. Pump pipe; 3. Lower layer crack sample; 4. Upper layer crack sample; 5. Cover plate; 6. Adjustment assembly; 61. Support plate; 62. Disc; 63. Connecting rod; 64. Pin; 65. Rotating rod; 66. Clamping block; 67. Follower plate; 68. Central shaft; 69. Positioning block; 10. Anti-reverse block; 611. Chuck; 612. Limiting ring; 613. Stepper motor; 614. Lead screw; 615. Linkage rod; 616. Connecting column; 7. Pressing cylinder; 8. Base plate; 9. Clamping bar; 10.

[0024] Example: Figs. 1-2As shown, the concrete crack simulation visualization grouting diffusion device in this embodiment includes an experimental chamber 1 and a cover plate 5 for sealing the upper end of the experimental chamber 1. The cover plate 5 and the experimental chamber 1 are detachably connected to facilitate the replacement of crack samples inside the experimental chamber 1. Pumping pipes 2 are provided on both sides of the experimental chamber 1, communicating with its interior. These pumping pipes 2 can be connected to a pump body to inject grout into the crack samples placed inside the experimental chamber 1. An upper layer crack sample 4 and a lower layer crack sample 3 are provided inside the experimental chamber 1, arranged at a certain distance to form cracks between them. A downward pressure cylinder 8 is provided on the top outer wall of the cover plate 5. The output end of the downward pressure cylinder 8 moves through the cover plate 5 and is ball-jointed with the upper layer crack sample 4. Multiple adjustment components 6 are provided on the cover plate 5 for adjusting the tilt angle of the upper layer crack sample 4.

[0025] It should be further explained that after the cover plate 5 seals the open end of the test chamber 1, the lower cylinder 8 first drives the upper crack sample 4 to move down to the required position for the experiment. The connection between the output end of the lower cylinder 8 and the cover plate 5 is sealed by a movable sealing ring. The output end of the lower cylinder 8 is ball-jointed with the upper surface of the upper crack sample 4, so that the upper crack sample 4 can be used in conjunction with multiple adjustment components 6 to adjust the upper crack sample 4 at multiple angles.

[0026] This embodiment uses a base plate 9 and two clamping bars, with the upper surface of the base plate 9 ball-jointed to the output end of the pressing cylinder 8. This ensures stable clamping of the upper crack sample 4 without directly ball-jointing it to the output end of the pressing cylinder 8, thus preventing damage to the upper crack sample 4 and ensuring the accuracy of the simulation experiment. After being clamped by the clamping bars, the upper crack sample 4 is tilted vertically by the adjusting component 6. Multiple connecting posts 7 are provided on the cover plate 5, and the upper outer wall of each connecting post 7 has a retaining ring. The outer diameter of the retaining ring is larger than the outer diameter of the connecting post 7, effectively preventing excessive displacement of the output end of the pressing cylinder 8.

[0027] like Figs. 1-2 As shown, four adjustment components 6 are respectively set at the four right angles of the cover plate 5 (two are omitted in the figure), so that the stability of the upper crack sample 4 after the tilt angle is adjusted can be guaranteed whether the four adjustment components 6 are adjusted individually or in combination.

[0028] like Fig. 2As shown, the adjustment assembly 6 includes a support plate 61 and a linkage rod 616. The lower end of the linkage rod 616 movably passes through the cover plate 5 and is hinged to the upper surface of the base plate 9. A positioning block 610 is fixed on the vertically arranged support plate 61. The central shaft 69 movably passes through the positioning block 610 and extends horizontally. A rotating rod 65 perpendicular to the cover plate 5 is rotatably arranged on the support plate 61 via a pin 64. The middle part of the rotating rod 65 is connected to the linkage rod 616 via a connecting rod 63. A clamp 66 is provided at both ends of the rotating rod 65. Each clamp 66 is provided with a U-shaped clamping block 67. A U-shaped snap connector is provided on the extension section of the central shaft 69. The assembly also includes a disc 62. A follower plate 68 that is ball-jointed with the snap connector is fixed in the middle of the side wall of the disc 62. The two clamping blocks 67 are symmetrically distributed along the axis of the disc 62, and the upper and lower parts of the disc 62 are respectively placed in the U-shaped clamping areas of the two clamping blocks 67.

[0029] When adjusting the inclination of the upper crack sample 4, under the support and constraint of the limiting block, the central shaft 69 is pulled in a linear reciprocating motion in the horizontal direction by a manual or electric drive device. The central shaft 69 drives the clamping joint to move in a linear motion. Since the clamping joint is connected to the follower ball, the clamping joint drives the disc 62 to rotate around the hinge point between the clamping joint and the follower rod while moving in a linear motion. This, in turn, drives the clamping block 67 and the rotating rod 65 to move in a circular motion around the pin 64. By rotating the rotating rod 65 and the connecting rod 63, the linkage rod 616, which is hinged to the base plate 9, can be driven to move in a linear motion in the vertical direction, thereby realizing the inclination adjustment of the upper crack sample 4. In this structure, the central shaft 69, the follower plate 68, the rotating rod 65, and the linkage rod 616 form a multi-link 63 structure. The linkage rod 616 is hinged to the base plate 9, and the output end of the pressing cylinder 8 is ball-jointed with the base plate 9. This allows for a relatively large range of adjustable positions of the base plate 9. By adjusting the displacement of the central shaft 69 in the horizontal direction, the overall or partial tilt angle of the upper crack sample 4 can be precisely controlled. For example, when two adjustment components 6 on the same diagonal of the cover plate 5 are used together, the central shaft 69 in one adjustment component 6 moves linearly in one direction, while the central shaft 69 in the other adjustment component 6 moves linearly in the opposite direction. This causes one end of the base plate 9 to rise and the other end to fall. The specific rising and falling displacements can be calculated using the dimensions of the pre-set multi-link 63 structure.

[0030] This embodiment utilizes more precise automated equipment to adjust the displacement of the central shaft 69, specifically a stepper motor 614. A stop block 611 is provided on the lower surface of the positioning block 610, and a lead screw 615 passes through and is threaded into the stop block 611. A chuck 612 is located at the end of the lead screw 615 furthest from the disc 62, and its middle section is connected to the output end of the stepper motor 614. Two limiting rings 613 are spaced apart on the end of the central shaft 69 furthest from the disc 62, with a portion of the chuck 612 positioned within the gap between the two limiting rings 613. Through precise rotation adjustment of the stepper motor 614, the chuck 612 drives the two limiting rings 613, along with the central shaft 69, to reciprocate linearly, ensuring accurate and effective adjustment of the inclination of the upper crack sample 4.

[0031] In this embodiment, during specific operation, the pumping pipe 2 is connected to the grout storage pipe through the pump body. When the experimenter simulates leakage in concrete cracks, the seepage magnitude is changed according to the seepage problems that may occur in the actual situation. By changing the crack sample, a simulated concrete crack grouting experiment is conducted. Based on the combined operation of the pressure gauge and the tilt angle of the upper crack sample 4 using the adjustment component 6, the flow rate, grouting speed, etc., are changed in real time to achieve a more realistic simulation experiment and prepare actual response plans in advance. Multiple pressure gauges are evenly distributed on the lower surface of the upper crack sample 4. The upper surface of the upper crack sample 4 is connected to the terminal data control backend, such as a PLC control system. The PLC control system, together with the pre-set pressure gauge, the lower pressure cylinder 8, and the pump body connected to the pumping pipe 2, forms a complete control loop. After the output power of the lower pressure cylinder 8, the output power of the pump body, and the detection data of the pressure gauge are collected and sorted, the pump body and the adjustment component 6 will generate relevant execution actions when they receive feedback commands, such as changing and adjusting the inclination of the upper crack sample 4, changing the injection speed or flow rate of the grout, so as to achieve diversified simulated grouting purposes.

[0032] In this embodiment, the experimental chamber 1 can preferably be made of acrylic material to make it transparent, thereby ensuring that the experimenters can observe the diffusion state of the slurry in the experimental chamber 1 in real time, and at the same time, it is convenient for the experimenters to quickly adjust the inclination of the upper crack sample 4.

[0033] In this embodiment, the output end of the downward pressure cylinder 8 is ball-joined with the upper surface of the upper crack sample 4, so that the upper crack sample 4 can be used together with multiple adjustment components 6. The output of the downward pressure cylinder 8 causes the upper crack sample 4 to move, so as to smoothly achieve the tilt adjustment of the upper crack sample 4 at multiple angles. Finally, the auxiliary detection device can detect the parameters of the crack sample after adjustment, so as to realize diversified simulated grouting experiment.

[0034] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A visual grouting diffusion device for simulating concrete cracks, comprising an experimental chamber and a cover plate detachably enclosed on the top of the experimental chamber, wherein pumping pipes communicating with the interior are respectively provided on both sides of the experimental chamber, characterized in that: The test chamber contains an upper crack sample and a lower crack sample. A pressing cylinder is installed on the outer wall of the cover plate. The output end of the pressing cylinder moves through the cover plate and is ball-connected with the upper crack sample. The upper crack sample can be raised and lowered under the drive of the pressing cylinder. Multiple adjustment components for adjusting the tilt angle of the upper crack sample are provided on the cover plate. The adjustment assembly includes a support plate and a linkage rod. The linkage rod passes through the cover plate at its lower end and is hinged to the upper surface of the base plate. A positioning block is fixed on the vertically arranged support plate. The positioning block has a central shaft that passes through it and extends horizontally. A rotating rod perpendicular to the cover plate is rotatably arranged on the support plate via a pin. The middle part of the rotating rod is connected to the linkage rod via a connecting rod. A clamp is provided at both ends of the rotating rod. Each clamp is provided with a U-shaped clamping block. A U-shaped snap-fit ​​connector is provided on the extension section of the central shaft. A disc is arranged between the two clamping blocks. The two clamping blocks are symmetrically distributed along the axis of the disc. The upper and lower parts of the disc are respectively placed within the U-shaped clamping areas of the two clamping blocks. A follower plate that ball-joints with the snap-fit ​​connector is fixed in the middle of the side wall of the disc. The central shaft drives the clamping joint to move linearly, which in turn drives the disc to rotate around the hinge point between the clamping joint and the follower rod. This, in turn, drives the clamping block and the rotating rod to move in a circular motion around the pin. By rotating the rotating rod and the connecting rod, the linkage rod that is hinged to the bottom plate can be driven to move linearly in the vertical direction, thereby adjusting the inclination of the upper crack sample.

2. The visual grouting diffusion device for simulating concrete cracks according to claim 1, characterized in that: The test chamber has a base plate inside, and clamping strips are bolted to both ends of the base plate. The two clamping strips are used to fix the upper crack sample.

3. The visual grouting diffusion device for simulating concrete cracks according to claim 2, characterized in that: The cover plate is provided with multiple connecting posts. The lower end of the connecting post moves through the cover plate and is ball-jointed with the upper surface of the base plate. The outer wall of the upper end of the connecting post is provided with a retaining ring with an outer diameter larger than the outer diameter of the connecting post.

4. The visual grouting diffusion device for simulating concrete cracks according to claim 1, characterized in that: The number of adjustment components is four, and the four adjustment components are located at the four right angles of the cover plate.

5. The visual grouting diffusion device for simulating concrete cracks according to claim 1, characterized in that: A backstop block is provided on the lower surface of the positioning block. The backstop block is threadedly connected to a through lead screw. A chuck is provided at the end of the lead screw away from the disk. The middle part of the chuck is connected to the output end of the stepper motor. Two limit rings are spaced apart on the end of the central shaft away from the disk, and a portion of the chuck is placed in the gap between the two limit rings.

6. The visual grouting diffusion device for simulating concrete cracks according to claim 1, characterized in that: Multiple pressure gauges are respectively installed on the lower surface of the upper crack sample and the upper surface of the lower crack sample. The pressure gauges are connected to the terminal data control backend, which is connected to control the downward pressure cylinder and the pump body connected to the pumping pipe.

7. The visual grouting diffusion device for simulating concrete cracks according to claim 1, characterized in that: The experimental chamber is made of acrylic material.

8. A method for applying the visual grouting diffusion device for simulating concrete cracks as described in any one of claims 1-7, characterized in that: Design crack samples according to actual conditions; arrange pressure gauges in the crack samples; adjust the tilt angle of the upper crack sample in the crack samples by adjusting the components, and at the same time change the grouting parameters in real time to carry out grouting diffusion simulation experiments, and use pressure gauges to detect pressure data during the experiment.

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