A highly adaptable concrete impermeability detection mechanism

Abstract

The application discloses a kind of strong adaptability concrete impermeability detection mechanism, it is related to building material performance test technical field, including box, the box is equipped with booster assembly, and the booster assembly is connected with several molds, the communication of the booster assembly with the mold is equipped with gasket, the gasket is coaxially arranged with the mold, the gasket is used to prevent the booster fluid from the side of the mold Permeation, the outer top wall of the box is equipped with several laser emitters and several photoelectric sensors, further including control system, the control system is used to judge the deformation state of each position of the gasket according to the size variation of electric signal, and only when the size variation of all electric signals is same, while the size of electric signal reaches the set value, judge the deformation state of each position of the gasket is consistent, judge the mold installation is completed, and output stop signal to user, to improve the pre-tightening force uniformity of each position of the mold in the installation of test piece in impermeability test.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building material performance testing, and particularly relates to a concrete impermeability detection mechanism with high adaptability. BACKGROUND

[0002] Concrete impermeability test is a key test for evaluating the ability of concrete to resist water penetration under pressure, which directly affects the durability and service life of the structure. The test simulates the process of water penetrating through the concrete under pressure and measures the impermeability grade (such as P6, P8, P12, etc.) to provide a basis for engineering design and quality control. The core equipment of the test includes a concrete impermeability tester, a standard impermeability test mold (a circular table-shaped metal mold), and a bolt fastening system. The mold is composed of a bottom mold, a side mold (usually two half rings), and a top mold (a flange plate), which is fixed by bolts and pre-tightened to ensure the sealing between the end surface of the test piece and the mold.

[0003] During the test, uniform distribution of the pre-tightening force of the mold is crucial. If the pre-tightening force is uneven, such as some bolts being too tight and some being too loose, it will lead to sealing failure. The area that is too loose cannot fully compress the sealing material (such as rubber rings or sealing paste), allowing pressure water to seep out from the gap between the mold and the test piece, causing "false leakage" and incorrectly reflecting the impermeability of the concrete. In addition, uneven pre-tightening force may also cause the test piece end surface to bear local high stress, leading to the crushing or micro-cracking of the concrete, changing the real penetration path and further affecting the test accuracy. At the same time, uneven stress may cause the mold to deform, reducing its service life and increasing the test cost. Therefore, ensuring uniform distribution of the pre-tightening force is a key factor to ensure the reliability of the test results.

[0004] In the prior art, a torque wrench is used to accurately control the tightening torque of the bolts. The torque wrench indirectly controls the pre-tightening force of each bolt by setting a uniform torque value, greatly improving consistency. However, the actual pre-tightening force is still affected by the friction coefficient, so the bolt threads and contact surfaces need to be properly lubricated (such as using molybdenum disulfide paste) to stabilize the relationship between torque and pre-tightening force.

[0005] In addition, the tightening sequence of the bolts has a significant impact on the uniformity of the pre-tightening force. If tightened in a clockwise or counterclockwise sequence, it is easy to cause the mold to shift or deform locally. Therefore, the cross tightening method must be used, such as tightening the 6-bolt mold in the order of 1-4-2-5-3-6 in stages. Usually, the bolts are initially tightened with a lower torque (30%-50% of the target value), and then tightened to the target torque in the same order to ensure that the stress is evenly distributed gradually.

[0006] The use of gaskets is also an important measure to improve the uniformity of pre-tightening force. The flat gasket can increase the stress area and reduce the risk of local crushing of the flange surface. The spherical or conical gasket can compensate for the angle deviation of the bolt and the supporting surface, and avoid the loss of pre-tightening force caused by misalignment. However, in the application process of the above-mentioned scheme, it is difficult to monitor the stress of each position of the mold during the installation process of the test piece. Although the existing technology can provide the same torque for each bolt through the torque wrench, the actual pre-tightening force is affected by the standardization of the operator, the friction coefficient between the bolt thread and the nut, and other factors, so that the pre-tightening force of each position of the test piece appears a gap in the actual operation, thereby affecting the accuracy of the subsequent impermeability test. SUMMARY

[0007] The present application aims to provide a concrete impermeability detection mechanism with strong adaptability to solve the above problems.

[0008] The present application is achieved by the following technical solutions:

[0009] A concrete impermeability detection mechanism with strong adaptability, comprising a box body, a booster assembly is arranged in the box body, and a plurality of molds are communicated with the booster assembly. The booster assembly is used for injecting booster fluid into the test piece. The communication part of the booster assembly and the mold is provided with a gasket made of elastic material. The gasket and the mold are coaxially arranged. The gasket is used to prevent the booster fluid from penetrating from the side of the mold. A plurality of laser emitters and a plurality of photoelectric sensors are arranged on the outer top wall of the box body. The laser emitters are used to emit laser to the gasket. The projections of the lasers on the horizontal plane are parallel to each other and located on the same plane. The photoelectric sensors are used to receive the light signals corresponding to the lasers and convert the light signals into electrical signals.

[0010] It also includes a control system. The control system is used to judge the deformation state of each position of the gasket according to the size change of the electrical signal. Only when the size change of all electrical signals is the same, and the size of the electrical signal reaches a set value, the deformation state of each position of the gasket is consistent, the installation of the mold is completed, and a stop signal is output to the user.

[0011] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0012] The present application can infer the pre-tightening force distribution and size of the bolts at each position by judging the deformation state of the gasket at the corresponding position through the shielding condition of the laser at each position, since the deformation of the gasket is caused by the self-weight of the test piece and the mold and the pre-tightening force of the bolts on the flange, thereby monitoring the pre-tightening force of the bolts during the installation of the test piece, reducing the uneven distribution of the pre-tightening force caused by the manual installation in the traditional scheme, affecting the sealing effect of the mold side, and possibly causing sealing failure and leakage during the test, affecting the test, and the test piece is easily damaged in the area with excessive pre-tightening force, and the test piece is not effectively constrained in the area with insufficient pre-tightening force.

[0013] Compared with the prior art, the present scheme greatly improves the sealing failure problem caused by uneven pre-tightening force in the anti-permeation test, reduces the occurrence of test data distortion caused by sealing failure during the test, and compared with the scheme using a pressure sensor or a strain gauge, the sensor in the present scheme does not directly contact the gasket, avoiding damage to the sensor caused by high-pressure liquid and the test piece during the installation of the test piece and the subsequent test, thereby affecting the service life of the mechanism.

[0014] And during the anti-permeation test, the test pieces tested at the same time need to meet the requirements of the same batch, unified process and standard curing, so the weights of the test pieces tested at the same time are basically the same, and the deformation of the gasket caused by them is basically the same, so the same position of the gasket in the same column or the same row can be monitored using the same set of laser emitters and photoelectric sensors, which can significantly reduce the use of sensors and reduce the difficulty of subsequent data processing compared with the use of time-of-flight sensors.

[0015] Further, the top wall of the box body is further provided with an adjusting assembly for adjusting the positions of the laser emitters and the photoelectric sensors, and the control system is further used for judging whether the test piece is placed complete according to the size change of the electric signal, and judging that the test piece is placed complete only when the electric signal decreases and remains unchanged within a set time, then controlling the adjusting assembly to drive the laser emitters and the photoelectric sensors to move, and synchronously judging the positional relationship between the laser propagation path and the gasket according to the size change of the electric signal, when the electric signal gradually increases and remains unchanged within a set time, the position corresponding to the laser emitter is the tangent position of the laser and the outer side wall of the gasket, then controlling the adjusting assembly to work, moving the laser emitters and the photoelectric sensors to the tangent position of the laser and the gasket, and outputting an installation prompt signal to the user.

[0016] Beneficial effects: in the scheme, by adjusting the design of the component, the scheme can be placed after the test piece, according to the position of the laser adjustment, to avoid the weight of the test piece, so that the gasket deformation is intensified, so that the initial state of the gasket covers the laser, and then affects the subsequent monitoring.

[0017] Further, the control system is also used to obtain the test piece formula input by the user, the elastic modulus of the gasket and the size of the gasket, and calculate the theoretical weight of the test piece according to the test piece formula, then calculate the theoretical deformation of the gasket according to the theoretical weight, the elastic modulus and the size of the gasket, and control the working of the adjusting assembly according to the theoretical deformation.

[0018] Beneficial effects: in the scheme, by the weight of the test piece, the time required for adjusting the position of the laser in the initial state is reduced, and the installation efficiency of the test piece is improved.

[0019] Further, the box and the flange are connected, and the installation assembly is arranged above the box, the installation assembly comprises an installation plate, a plurality of installation holes are formed in the installation plate, a transmission ring is rotatably connected to the side wall of each installation hole, the transmission ring is used for slidingly cooperating with and driving the nut of the flange to rotate, the outer side wall of the transmission ring is coaxially and fixedly connected with a gear, an inner gear is sleeved on the test piece, the inner gear is rotatably connected with the top wall of the installation plate, and the inner gear is meshed with the adjacent gear.

[0020] Beneficial effects: compared with the prior art, in the scheme, the nut on the same flange plate is driven to rotate synchronously by using the inner gear and the gear through the design of the installation assembly, and the test piece is efficiently installed.

[0021] Further, the control system is also used to obtain the test piece formula input by the user, the elastic modulus of the gasket and the size of the gasket, and calculate the theoretical weight of the test piece according to the test piece formula, then calculate the theoretical deformation of the gasket according to the theoretical weight, the elastic modulus and the size of the gasket, and control the working of the adjusting assembly according to the theoretical deformation.

[0022] Beneficial effects: in the scheme, by the design of the laser, the position of the gasket outer side wall near the laser is continuously monitored during the test, which helps the user to identify the test piece with sealing failure in time to a certain extent.

[0023] Further, the adjusting assembly is a multi-motor linear motor module, the laser emitter and the photoelectric sensor are installed on the motor of the multi-motor linear motor module, and the control system controls the multi-motor linear motor module to work according to the electric signal.

[0024] Beneficial effects: In this scheme, through the design of the multi-motor linear motor module, the different step movement between each laser emitter and each photoelectric sensor is realized, so as to realize the adjustment of the laser position. Compared with the scheme using a single motor, the installation of this scheme is more simple.

[0025] Further, the adjusting assembly further comprises an electric cylinder, the electric cylinder is hinged with the motor of the multi-motor linear motor module, and the laser emitter and the photoelectric sensor are hinged with the output end of the adjacent electric cylinder, and the laser emitter and the photoelectric sensor are hinged with the motor of the adjacent multi-motor linear motor module, and the control system controls the electric cylinder to work according to the electric signal.

[0026] Beneficial effects: In this scheme, through the design of the electric cylinder, the photoelectric sensor and the laser emitter are pushed to rotate by the electric cylinder to change the angle of the laser, so as to realize the collection of the data of the same row or column of the cushion at the same time.

[0027] Further, the bottom wall of the mounting plate is detachably connected with the outer top wall of the box.

[0028] Beneficial effects: In this scheme, the mounting plate and the outer top wall of the box are detachable, which does not affect the subsequent impermeability test, and at the same time, a dark environment is constructed for the laser emitter and the photoelectric sensor during the installation of the test piece, so as to reduce the influence of external light source on the signal collection of the photoelectric sensor.

[0029] Further, the control system comprises a controller and a communication module, the communication module is used to output signals to the user, the controller is used to receive electric signals and judge whether the pre-tightening force on the cushion is uniform according to the electric signals, and the communication module is controlled to work when the pre-tightening force on the cushion is uniformly distributed.

[0030] Beneficial effects: Compared with the prior art, in this scheme, the use of the controller makes the implementation process of this scheme have higher response speed and higher reliability.

[0031] Further, the pressure increasing assembly comprises a water pump, and the molds are in communication with the output end of the water pump, and a pressure gauge is arranged at the communication position of the mold and the water pump.

[0032] Beneficial effects: Through the joint design of the water pump and the pressure gauge, a repeatable, high-precision and automatic test environment is provided for the subsequent impermeability test, which significantly improves the scientificity and engineering guidance value of the data. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings described herein are used to provide further understanding of the embodiments of the present application, constitute a part of the present application, and do not constitute a limitation on the embodiments of the present application. In the drawings:

[0034] Figure 1 isometric view of the present application;

[0035] Figure 2 top view of the present application;

[0036] Figure 3 is Figure 2 sectional view in A-A direction;

[0037] Figure 4 is Figure 2 sectional view in B-B direction;

[0038] Figure 5 top sectional view of the present application

[0039] Figure 6 is Figure 2 enlarged view at C;

[0040] Figure 7 is Figure 5 enlarged view at D.

[0041] The symbols represented by the reference signs are: 1, box; 2, mounting assembly; 21, mounting plate; 22, internal gear; 23, gear; 24, transmission ring; 3, mold; 4, gasket; 5, laser emitter; 6, multi-motor linear motor module; 7, photoelectric sensor; 8, electric cylinder. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application clearer and more apparent, the present application will be further described in detail below in combination with embodiments and drawings, the illustrative embodiments of the present application and the description thereof are only used to explain the present application, and do not limit the present application. It should be noted that the present application has been in the actual research and development stage of use.

[0043] Example 1

[0044] As Figures 1 to 7 shown, the present embodiment includes a box 1, the box 1 is provided with a pressurizing assembly, and the pressurizing assembly is communicated with a plurality of molds 3, and the molds 3 are all connected with the pressurizing assembly flange, the pressurizing assembly is used for injecting pressurizing fluid into the test piece, and the communication part of the pressurizing assembly and the mold 3 is all provided with a gasket 4, the material of the gasket 4 in the present embodiment is rubber, the gasket 4 is used to prevent the pressurizing fluid from penetrating from the side of the mold 3, the pressurizing assembly includes a water pump, the molds 3 are all communicated with the water pump, and the communication part of the mold 3 and the water pump is all provided with a solenoid valve and a pressure gauge.

[0045] The outer top wall of the box 1 is provided with a plurality of laser emitters 5 and a plurality of photoelectric sensors 7. In the embodiment, the laser emitters 5 and the photoelectric sensors 7 are fixedly connected to the box 1 by bolts. The laser emitters 5 are used for emitting laser to the gasket 4, and the projections of the lasers on the horizontal plane are parallel to each other and located on the same plane. The photoelectric sensors 7 are used for receiving the light signals corresponding to the lasers and converting the light signals into electric signals.

[0046] The control system is also included in the embodiment, which comprises a controller and a communication module. The communication module and the photoelectric sensors 7 are electrically connected to the controller. The controller is used for judging the deformation states of the gasket 4 at different positions according to the size changes of the electric signals, and judging that the deformation states of the gasket 4 at different positions are consistent only when the size changes of all the electric signals are the same and the size of the electric signal reaches a set value, so as to judge that the installation of the mold 3 is completed and output a stop signal to the user.

[0047] The specific implementation is as follows: when the present scheme is used, the operator presses the prepared test piece into the mold 3, and after starting the device, the mold 3 is placed on the top of the box 1 at a suitable position according to the test requirements. After the bolts of the flange pass through the upper flange, the nuts are installed.

[0048] In this process, the laser emitters 5 continuously emit laser. In the initial state, the test piece has not pressed the gasket 4 through the upper flange, so the gasket 4 does not deform and does not block the laser. The controller takes the electric signal obtained by the photoelectric sensor 7 at this time as the initial value. After the test piece is placed, the gasket 4 gradually deforms under the pressure of the gravity of the test piece and the mold 3, the height of the gasket 4 decreases, and the width increases. Then, as the operator rotates the nuts, the pressure applied by the upper flange on the gasket 4 gradually increases, the deformation of the gasket 4 intensifies, and the width continuously increases. The outer side wall of the gasket 4 gradually moves to the position tangent to the laser (i.e., the tangent point), and gradually blocks the laser.

[0049] As the range of the laser blocked by the gasket 4 increases, the light signal that can be received by the photoelectric sensor 7 gradually weakens. According to the proportion of the weakening of the light signal (such as 40%-50% of the initial state), the positional relationship between the tangent point and the laser is judged.

[0050] Since the positions of the laser emitters 5 and the photoelectric sensors 7 are fixed, i.e., the position of the laser is fixed, and the elastic modulus, the installation position, and the size of the gasket 4 are fixed, the deformation states of the gasket 4 at different positions can be judged according to the positional relationship between the gasket 4 and the laser at different positions. Since the gasket 4 is made of elastic material, the deformation of the gasket 4 at different positions is continuous and smooth. Therefore, after connecting the deformation amounts of the tangent points at different positions into a smooth closed curve, the deformation amounts of the outer side wall of the gasket 4 at different positions can be calculated according to the curve.

[0051] When the force applied on the gasket 4 is uniformly distributed along the axis of the gasket 4, the deformation of each position of the gasket 4 is uniform. When the force applied on the gasket 4 is not uniformly distributed, the equivalent moment of the force causes the deformation of each position of the gasket 4 to be non-uniform.

[0052] Therefore, according to the change of the size of the electrical signal collected by the photoelectric sensor 7 at each position, the deformation state of each position of the gasket 4 can be monitored. When the deformation of each position of the outer wall of the same gasket 4 is basically the same, the resultant force of the force applied on the gasket 4 is arranged along the axis of the gasket 4. Since the external force applied on the gasket 4 includes the gravity of the mold 3, the gravity of the test piece, and the pre-tightening force of the bolt, and since the gasket 4, the mold 3, and the test piece are coaxially arranged, the gravity of the mold 3 and the gravity of the test piece are both along the axis of the gasket 4. If the resultant force of the three at this time is along the axis of the gasket 4, i.e. the pre-tightening force of each bolt is arranged along the axis of the gasket 4 and has the same size.

[0053] Since the size and the elastic modulus of the gasket 4 are known, the deformation amount of the gasket 4 when the bolt reaches the appropriate pre-tightening force, the shielding degree of the laser, and the weakening amount of the electrical signal can be calculated. Therefore, when the pre-tightening force of each bolt is the same size and reaches the appropriate size according to the change of the electrical signal, the controller controls the communication module to work and outputs a stop signal to the user, prompting that the subsequent anti-permeation test can be performed.

[0054] If the deformation of the outer wall of the gasket 4 is not the same, i.e. the resultant force of the force applied on the gasket 4 is not arranged along the axis of the gasket 4, and since the bolts are uniformly arranged along the flange in the flange connection, the factor causing the change of the direction of the resultant force is that the pre-tightening force of each bolt is different. At this time, the controller controls the communication module to output a prompt information to the user, prompting the user to adjust the pre-tightening force of the bolt until the pre-tightening force of the bolt on the same gasket 4 is the same and reaches the appropriate size.

[0055] Compared with the prior art, the present scheme utilizes the change of the gasket 4 after being pressed, and monitors the deformation of the gasket 4 through the design of the laser emitter 5 and the photoelectric sensor 7, and further detects the size of the pre-tightening force of each position on the flange, helps the user to adjust the pre-tightening force of each position during the installation of the mold 3, reduces the leakage of the edge position of the test piece caused by the non-uniform pre-tightening force of each position of the mold 3, affects the accuracy of the test data, or causes damage and deformation of the edge position of the mold 3, affects the service life of the device, etc. At the same time, it can also reduce the cracks of the test piece with low strength or poor maintenance caused by the excessive pre-tightening force of each position of the mold 3, and affect the judgment of the penetration path in the test.

[0056] Embodiment 2

[0057] The difference between the above embodiment is that the top wall of the box 1 is further provided with an adjusting assembly, which is a multi-motor linear motor module 6, the adjusting assembly further comprises an electric cylinder 8, which is a micro servo electric cylinder in the embodiment, the electric cylinder 8 is hinged with the motor of the multi-motor linear motor module 6, and the laser emitter 5 and the photoelectric sensor 7 are both hinged with the output end of the adjacent electric cylinder 8, and the laser emitter 5 and the photoelectric sensor 7 are both hinged with the motor of the adjacent multi-motor linear motor module 6, the laser emitter 5 and the photoelectric sensor 7 are both fixedly connected with the motor of the multi-motor linear motor module 6 through bolts, the adjusting assembly is used for adjusting the positions of the laser emitter 5 and the photoelectric sensor 7, the multi-motor linear motor module 6 is electrically connected with the controller, the controller is further used for judging whether the test piece is placed or not according to the size change of the electric signal, and the test piece is judged to be placed only when the electric signal is reduced and remains unchanged within a set time, then the adjusting assembly drives the laser emitter 5 and the photoelectric sensor 7 to move, and judges the positional relationship between the laser propagation path and the gasket 4 according to the size change of the electric signal, when the electric signal gradually increases and remains unchanged within a set time, the position corresponding to the laser emitter 5 is the tangent position of the laser and the outer side wall of the gasket 4, then the multi-motor linear motor module 6 and the electric cylinder 8 are controlled to work, the laser emitter 5 and the photoelectric sensor 7 are moved to the tangent position of the laser and the gasket 4, and an installation prompt signal is output to the user.

[0058] The control system is further used for acquiring the test piece formula input by the user, the elastic modulus of the gasket 4 and the size of the gasket 4, calculating the theoretical weight of the test piece according to the test piece formula, then calculating the theoretical deformation of the gasket 4 according to the theoretical weight, the elastic modulus of the gasket 4 and the size, and controlling the multi-motor linear motor module 6 and the electric cylinder 8 to work according to the theoretical deformation.

[0059] The controller is further used for judging whether the test piece is water permeable or not during the working process of the pressurizing assembly, when the electric signal remains in a set range within the working time of the pressurizing assembly, the test piece is not water permeable, when the electric signal increases or decreases during the working of the pressurizing assembly, and the values of the electric signal after increasing and decreasing are out of the set range, the test piece is water permeable, then a prompt signal is output to the user, and the pressurizing assembly is controlled to stop working.

[0060] The specific implementation process is as follows: during the use of the scheme, after the operator places the test piece and before the nut is installed, the controller controls the multi-mover linear motor module 6 to work, driving the laser emitter 5 and the photoelectric sensor 7 to work at a uniform speed, in this process, the laser moves with the laser emitter 5, and at the same time, the laser emitter 5 and the photoelectric sensor 7 are pushed to move by the electric cylinder 8, thereby driving the laser to be inclined to the track of the multi-mover linear motor module 6, so that the multiple lasers acting on the same column (or the same row) of molds 3 act on different molds 3 in the column (or the row), and the controller continuously judges the positional relationship between the laser and the gasket 4 according to the electric signal, when the electric signal decreases, the laser is blocked by the gasket 4, and at the moment when the electric signal decreases, the laser is at the tangent position of the outer wall of the gasket 4. Then the controller controls the multi-mover linear motor module 6 to work again, adjusts the position of the laser emitter 5 and the photoelectric sensor 7 through the multi-mover linear motor module 6, so that the laser moves to the tangent position of the gasket 4. Then the controller controls the communication module to send installation information to the user, prompting the user to install the flange plate bolt.

[0061] The scheme can adjust the position of the laser after the test piece is placed by moving the position of the laser emitter 5 and the photoelectric sensor 7, compared with the prior art, the scheme can avoid that the gasket 4 deforms too much due to improper material selection of the gasket 4 or too heavy weight of the test piece, and the outer side wall of the gasket 4 completely blocks the laser before the flange plate bolt is installed, thereby the subsequent measurement cannot be performed. At the same time, the scheme can also adjust the position of the laser emitter 5 and the photoelectric sensor 7 before the test, so as to reduce the problem that the position of the laser emitter 5 and the photoelectric sensor 7 does not correspond due to external factors such as equipment working vibration, and the light signal received by the photoelectric sensor 7 decreases, thereby affecting the test.

[0062] The scheme can also obtain the test piece formula input by the user, since the standard test piece used in the concrete impermeability test has the same volume, therefore, the theoretical weight corresponding to the test piece can be calculated according to the formula of the test piece, and the weight of the mold 3 is known, and the size and elastic modulus of the gasket 4 are known, therefore, the size of the force exerted on the gasket 4 by the test piece and the mold 3 when the flange plate bolt is not installed, and the deformation of the gasket 4 caused thereby can be calculated, according to the above deformation, the controller can adjust the position of the laser emitter 5 and the photoelectric sensor 7 at the same time when the operator places the test piece, so as to reduce the time for adjusting the position of the laser after the test piece is placed, and thereby reduce the time required for installing the test piece.

[0063] Meanwhile, when the booster assembly is working, the water pump continuously injects the booster liquid into the installed test piece. As the test is being conducted, if the operator does not handle the sealing of the test piece well, water leaks appear on the side of the test piece during the operation process, and the booster liquid seeps out from the joint of the flange plate. Under the action of gravity, the liquid droplets flow downward. When the liquid droplets reach the position of the laser, the light signal received by the corresponding photoelectric sensor 7 is weakened due to the scattering of the laser through the liquid droplets. When the liquid droplets flow through the laser, the light signal is enhanced. Therefore, when the above-mentioned changes in the electric signal occur after the water pump is working, it can be determined that the test piece at the corresponding position may have a water leakage problem. At this time, the controller controls the communication module to output prompt information to the user and controls the water pump to stop working to avoid causing safety accidents due to continuous boosting.

[0064] Embodiment 3

[0065] The difference from the above-mentioned embodiments is that the flange connection is provided between the box body 1 and the mold 3, and the mounting assembly 2 is arranged above the box body 1. The mounting assembly 2 comprises a mounting plate 21, a plurality of mounting holes are formed in the mounting plate 21, a transmission ring 24 is rotationally connected to the side wall of each mounting hole, the transmission ring 24 is used for slidingly matching with and driving the nut of the flange to rotate, the inner side wall of the transmission ring 24 and the outer side wall of the nut of the flange are in up-down sliding matching, the outer side wall of the transmission ring 24 is coaxially fixedly connected with a gear 23 through a bolt, and an inner gear 22 is sleeved on the test piece. The inner gear 22 is rotationally connected with the top wall of the mounting plate 21, and the inner gear 22 is in meshing with the adjacent gear 23.

[0066] The specific implementation is as follows: in the use process of the scheme, before placing the test piece, the mounting plate 21 is installed on the corresponding position of the box body 1. With the working of the laser emitter 5 and the photoelectric sensor 7, after the communication module sends an installation prompt signal, the operator can use a traditional manual wrench or an electric wrench to be in sliding matching with any transmission ring 24, and then rotates the wrench. The gear 23 installed on the transmission ring 24 drives the inner gear 22 to rotate, and the inner gear 22 drives the other gears 23 in meshing therewith to rotate, so as to drive the remaining transmission rings 24 to rotate. During the rotation of the transmission ring, the torque is transmitted to the nut of the flange plate through the inner side wall of the transmission ring, so as to drive the nut to rotate. During the rotation of the nut, the nut slides in the vertical direction due to the limitation of the thread, and gradually approaches the flange plate, so as to fix the flange plate.

[0067] Compared with the prior art, in the scheme, through the design of the mounting plate 21, the nuts on the same flange plate are driven to rotate synchronously by the plurality of internal gears 22, so as to reduce the stress concentration phenomenon on the mold 3 in the installation process, thereby affecting the accuracy of the subsequent concrete impermeability test. At the same time, the design of the mounting plate 21 can shield the external light to some extent, thereby avoiding the influence of external light source on the laser propagation and the signal collection of the photoelectric sensor 7, improving the accuracy of the signal collected by the photoelectric sensor 7, and reducing the probability of misjudgment of the controller.

[0068] The above specific embodiments further illustrate the purposes, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A highly adaptable concrete impermeability testing mechanism, comprising a box (1), wherein a pressurizing component is provided inside the box (1), and the pressurizing component is connected to a plurality of molds (3), the pressurizing component is used to inject pressurizing fluid into the specimen, and elastic material pads (4) are provided at the connection between the pressurizing component and the molds (3), the pads (4) are coaxially arranged with the molds (3), and the pads (4) are used to prevent the pressurizing fluid from seeping from the side of the molds (3), characterized in that: The box (1) is provided with a plurality of laser emitters (5) and a plurality of photoelectric sensors (7) on the outer top wall, the laser emitters (5) are used for emitting laser to the gasket (4), and the projections of the lasers on the horizontal plane are parallel and located on the same plane, and the photoelectric sensors (7) are used for receiving the optical signals corresponding to the lasers and converting the optical signals into electrical signals; The control system is further used for judging the deformation states of the gasket (4) at different positions according to the size changes of the electrical signals, and judging that the deformation states of the gasket (4) at different positions are consistent only when the size changes of all the electrical signals are the same and the size of the electrical signal reaches a set value, judging that the installation of the mold (3) is completed, and outputting a stop signal to the user.

2. The mechanism for permeability detection of concrete according to claim 1, characterized in that: The top wall of the box (1) is further provided with an adjusting assembly, the adjusting assembly is used for adjusting the positions of the laser emitters (5) and the photoelectric sensors (7), the control system is further used for judging whether the test piece is placed completely according to the size changes of the electrical signals, and judging that the test piece is placed completely only when the electrical signal decreases and remains unchanged within a set time, then controlling the adjusting assembly to drive the laser emitters (5) and the photoelectric sensors (7) to move, and judging the positional relationship between the laser propagation path and the gasket (4) according to the size changes of the electrical signals, when the electrical signal gradually increases and remains unchanged within a set time, the position corresponding to the laser emitter (5) is the tangent position of the laser and the outer side wall of the gasket (4), then the adjusting assembly is controlled to work, the laser emitters (5) and the photoelectric sensors (7) are moved to the tangent position of the laser and the gasket (4), and an installation prompt signal is output to the user.

3. The mechanism for permeability detection of concrete according to claim 2, characterized in that: The control system is further used for obtaining the test piece formula input by the user, the elastic modulus of the gasket (4) and the size of the gasket (4), calculating the theoretical weight of the test piece according to the test piece formula, then calculating the theoretical deformation of the gasket (4) according to the theoretical weight, the elastic modulus of the gasket (4) and the size, and controlling the adjusting assembly to work according to the theoretical deformation.

4. The mechanism for permeability detection of concrete according to claim 1, characterized in that: The box (1) and the mold (3) are connected through flanges, and the box (1) is provided with an installation assembly (2) above, the installation assembly (2) comprises an installation plate (21), a plurality of installation holes are formed in the installation plate (21), a transmission ring (24) is rotationally connected to the side wall of each installation hole, the transmission ring (24) is used for slidingly matching with the nut of the flange and driving the nut of the flange to rotate, the outer side wall of the transmission ring (24) is coaxially and fixedly connected with a gear (23), an inner gear (22) is sleeved on the test piece, the inner gear (22) is rotationally connected with the top wall of the installation plate (21), and the inner gear (22) is engaged with the adjacent gear (23).

5. The adaptable concrete permeability detection mechanism of claim 1, wherein: The control system is also used for outputting a prompt signal to the user and controlling the booster assembly to stop working when the test piece appears water seepage when the electric signal increases or decreases and the value of the electric signal after increasing or decreasing exceeds the set range during the working of the booster assembly.

6. The mechanism for permeability detection of concrete according to claim 2, characterized in that: The adjusting assembly is a multi-mover linear motor module (6), the laser emitter (5) and the photoelectric sensor (7) are all installed on the mover of the multi-mover linear motor module (6), and the control system controls the multi-mover linear motor module (6) to work according to the electric signal.

7. The mechanism for permeability detection of concrete according to claim 6, characterized in that: The adjusting assembly further comprises an electric cylinder (8), the electric cylinder (8) is hinged to the mover of the multi-mover linear motor module (6), the laser emitter (5) and the photoelectric sensor (7) are both hinged to the output end of the adjacent electric cylinder (8), and the laser emitter (5) and the photoelectric sensor (7) are both hinged to the mover of the adjacent multi-mover linear motor module (6), and the control system controls the electric cylinder (8) to work according to the electric signal.

8. The mechanism for permeability detection of concrete according to claim 4, characterized in that: The bottom wall of the mounting plate (21) is detachably connected with the outer top wall of the box body (1).

9. The adaptable concrete permeability detection mechanism of claim 1, wherein: The control system comprises a controller and a communication module, the communication module is used for outputting a signal to the user, the controller is used for receiving the electric signal and judging whether the pre-tightening force on the gasket (4) is uniform according to the electric signal, and the communication module is controlled to work when the pre-tightening force on the gasket (4) is uniformly distributed.

10. The adaptable concrete permeability detection mechanism of claim 1, wherein: The booster assembly comprises a water pump, the molds (3) are all communicated with the output end of the water pump, and a pressure gauge is arranged at the communication position of the mold (3) and the water pump.

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