A test mold rotary clamping rapid assembly concrete impermeability testing device

Abstract

This invention provides a rapid assembly device for testing the permeability resistance of concrete using a rotating and snap-fit ​​mold. The device includes a permeability testing instrument body with an internal pressurization component. Multiple mold mounting positions are located on the top of the instrument body. The device further includes multiple rotating and snap-fit ​​molds, each corresponding to a specific mounting position on the top of the instrument body. Each mounting position has a positioning component, and each rotating and snap-fit ​​mold is embedded within its corresponding positioning component and sealed by a sealing mechanism. The molds in this invention allow for rapid assembly and disassembly while maintaining a tight seal, increasing the accuracy of the test. This invention solves the problem in existing technologies where multiple screws are used to fix the sealing base to the permeability resistance mold during positioning, increasing the workload for workers.

Description

Technical Field

[0001] This invention relates to the field of permeability testing technology, specifically to a rapid assembly concrete permeability testing device using a rotating mold clamping mechanism. Background Technology

[0002] Concrete contains micropores. If these micropores become interconnected under pressure, they can form channels for fluid penetration, allowing fluid to enter the concrete and even permeate through it, causing negative effects such as steel reinforcement corrosion and leakage in concrete pools. Impermeable concrete refers to concrete whose impermeability is improved by increasing its density and pore structure to reduce permeability channels. This is typically achieved by adjusting the concrete mix proportions, adding admixtures, using new types of cement, ensuring proper compaction, and adequate curing. To accurately determine the impermeability grade of impermeable concrete and whether it meets design requirements, the impermeability of each batch of impermeable concrete specimens needs to be tested. A concrete impermeability testing device is a specialized tool used to determine the impermeability of concrete.

[0003] A typical concrete permeability testing device includes a pressure measuring apparatus and several molds for mounting concrete test blocks (i.e., steel molds on top of the concrete permeability meter). These molds are generally frustum-shaped, with an upper internal diameter of 175mm, a lower internal diameter of 185mm, and a height of 150mm. Currently, most commercially available concrete permeability meters seal the mold base by fixing it to the meter with multiple screws. During routine concrete permeability testing, workers first need to insert the concrete test block into the mold, then align the bolt holes at the bottom of the mold with the pre-drilled bolts on the meter, and finally manually tighten each bolt to achieve a sealed installation of the mold base. This process is inefficient, significantly increases the workload of workers, and reduces testing efficiency.

[0004] Therefore, we propose a rapid assembly concrete impermeability testing device using a rotating mold and snap-fit ​​mechanism to address the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a quick-assembly concrete impermeability testing device with a rotating and snap-fit ​​mold. The mold of this testing device is simple and convenient to install, can be quickly snapped together and assembled, and can ensure its sealing effect. It can solve the problem mentioned in the background art that most concrete impermeability test molds require multiple screws to seal and fix the base in the impermeability test mold, which increases the labor intensity of workers.

[0006] To achieve the above objectives, the present invention provides a rapid assembly concrete permeability testing device using a rotating snap-fit ​​mold, comprising a permeability testing instrument body, wherein a pressurization component is provided inside the permeability testing instrument body, and multiple mold mounting positions are provided on the top of the permeability testing instrument body. The device is characterized in that: the testing device further includes multiple rotating snap-fit ​​molds, which are correspondingly installed at each mold mounting position on the top of the permeability testing instrument body. Each mold mounting position is provided with a positioning component, and each rotating snap-fit ​​mold is embedded in a corresponding positioning component and sealed by a sealing mechanism.

[0007] Each of the rotary locking molds includes a cylindrical mold body and a first flange fixedly connected to the bottom of the mold body. A second flange is provided at each mold mounting position on the top of the permeability tester body. The positioning component includes a positioning ring, the second flange is located inside the positioning ring, the first flange at the bottom of the mold body is embedded in the positioning ring, and the first flange and the second flange are mated.

[0008] Each sealing mechanism includes a drive motor, a lifting ring, a transmission mechanism, and multiple sealing components. The drive motor is fixedly mounted on the body of the permeability testing instrument. The drive motor is connected to the lifting frame control end of each sealing component through the transmission mechanism, driving the lifting frame and positioning block to rotate, and causing the positioning block to rotate above the first and second flanges after docking. The lifting ring is mounted above the positioning ring through at least two sets of lifting cylinders. Multiple sealing components are distributed on the lifting ring. Each sealing component includes a lifting frame and a positioning block fixed at the bottom of the lifting frame. The lifting ring is controlled by the lifting cylinders to drive the positioning block to move up and down, and to press and position the rotating snap-fit ​​mold body when moving downwards.

[0009] A preferred technical solution of the present invention: The sealing mechanism further includes a gear ring, which is rotatably mounted outside the positioning ring. The output end of the drive motor is fixedly connected to a drive shaft, and a drive gear is fixedly sleeved on the outer surface of the drive shaft. The drive gear meshes with the gear ring. The transmission mechanism includes multiple driven gears meshing around the gear ring, matching the number of sealing components. Multiple sets of sealing components are correspondingly distributed above each driven gear, and the lifting frame is connected to the central shaft of the corresponding driven gear. The drive motor drives the drive gear to rotate the gear ring, thereby driving the multiple driven gears and the corresponding sealing components to rotate.

[0010] The preferred technical solution of this invention is as follows: Two inlets are symmetrically opened on the top of each positioning ring, and two pressure sensors are symmetrically arranged on the top of each positioning ring. The line connecting the two inlets is perpendicular to the line connecting the two pressure sensors. Two protrusions matching the inlets on the positioning ring are symmetrically arranged on the first flange of each rotary locking mold, and an installation groove is opened in each protrusion. Two second springs are arranged on the inner bottom surface of each installation groove, and a first positive electromagnet is arranged at the top of the two second springs. The two sides of the first positive electromagnet are sloped. A slot is opened on the inner bottom surface of each positioning ring corresponding to the position of each pressure sensor. A limiting groove is opened on the top of each positioning ring corresponding to the position of the slot. A second positive electromagnet is slidably connected between the opposite inner walls of each limiting groove. The two pressure sensors on each positioning ring correspond to the two second positive electromagnets respectively. When the protruding part in the first flange rotates to the position corresponding to the two slots, the protruding part in the first flange will fall down into the two corresponding slots under its own gravity.

[0011] The preferred technical solution of the present invention is as follows: the pressurization component includes a water tank disposed in the body of the impermeability tester, and a plurality of permeable plates are fixedly connected to the top of the water tank. The number of permeable plates is the same as the number of rotating snap-fit ​​test molds, and they are respectively installed in each test mold mounting position and located inside the positioning ring.

[0012] The preferred technical solution of the present invention is as follows: the second flange is fixed to the outside of each permeable plate, a sealing gasket is provided inside each second flange, and each first flange is provided with an annular groove that matches the sealing gasket; after the second flange is connected to the first flange, the sealing gasket in the second flange is embedded in the annular groove in the corresponding first flange.

[0013] The preferred technical solution of the present invention is as follows: the driving gear is rotatably installed inside the auxiliary frame, and the auxiliary frame is fixedly installed on the top of the permeability testing instrument body; the vertical height of the drive motor is less than the vertical height of the positioning ring.

[0014] The preferred technical solution of the present invention is as follows: each driven gear is rotatably installed in a limiting frame, the limiting frame is fixed on the body of the permeability testing instrument, and multiple driven gears are evenly distributed; a hollow rod is movably embedded inside each limiting frame, the hollow rod is fixedly connected to the central shaft of the driven gear, a first spring is provided on the inner bottom surface of each hollow rod, and a lifting rod is fixedly connected to the top of each first spring, the top of each lifting rod movably extends to the outside of the corresponding hollow rod, and an I-shaped sleeve is fixedly fitted at the bottom of each lifting frame, and is fixedly connected to the top of the corresponding lifting rod through the I-shaped sleeve.

[0015] The preferred technical solution of the present invention is as follows: the cross-section of the connection between the toothed ring and the body of the permeability tester is L-shaped, the multiple lifting frames are at 90° to the toothed ring, and the drive motor has a self-locking function.

[0016] The preferred technical solution of the present invention is as follows: an air pump is fixedly installed on the outer surface of the impermeability tester body by screws, the output end of the air pump is fixedly connected to a delivery pipe, an inlet pipe is fixedly connected to the outer surface of the water tank, an electromagnetic valve is installed on the outer surface of the inlet pipe, and a sealing plate is slidably connected inside the water tank.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) In the process of installing the test mold in this invention, the protruding part in the first flange is first rotated to the position corresponding to the two slots. The first flange is automatically pressed and positioned by multiple positioning blocks, similar to the sealing and opening mode of a pressure cooker lid. This can ensure the quick snap-fit ​​installation of the test mold and ensure its sealing effect. It solves the problem that most concrete anti-permeability test molds in the prior art need to fix the sealing base in the anti-permeability test mold with multiple screws when positioning the concrete, which increases the labor intensity of the workers.

[0019] (2) During the installation of the rotating snap-fit ​​test mold body, the two first positive electromagnets and the two second positive electromagnets are electrically connected to the external power supply, so that the two opposing positive electromagnets repel each other in the same direction, thereby causing the second positive electromagnet to move upward under the action of the magnetic field, so that its outer surface contacts the pressure sensor. The external control system automatically starts the drive motor, pushes multiple positioning blocks to press the first flange, thereby realizing the automatic pressing and positioning of the sealing base.

[0020] (3) In order to facilitate the positioning of the first flange, multiple lifting frames are positioned at 90° with the toothed ring. When the drive motor drives the multiple lifting frames to rotate 90°, the multiple positioning blocks rotate to the top of the first flange. This facilitates the positioning of the first flange by the multiple positioning blocks and also facilitates the installation of the rotating snap-fit ​​test mold body. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the anti-permeability testing device without the test mold installed in this invention;

[0023] Figure 3 This is a sectional perspective view of the water tank portion in this invention;

[0024] Figure 4 This is a sectional perspective view of the first flange portion in this invention;

[0025] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 This is a schematic diagram of the sealing mechanism in this invention;

[0027] Figure 7 This is a perspective view of the positioning ring portion in this invention;

[0028] Figure 8 This is a sectional perspective view of the positioning ring portion in this invention;

[0029] Figure 9 for Figure 8 Enlarged view at point B in the middle;

[0030] Figure 10 This is a perspective view of the driven gear portion of the present invention.

[0031] Figure 11 This is a perspective cross-sectional view of the hollow rod portion in this invention;

[0032] Figure 12 This is a perspective view of the drive motor portion of the present invention.

[0033] In the diagram: 1. Permeability testing instrument body; 2. Pressurization assembly; 201. Water tank; 202. Second flange; 203. Permeable plate; 204. Sealing gasket; 205. Air pump; 206. Delivery pipe; 207. Inlet pipe; 208. Solenoid valve; 209. Sealing plate; 3. Rotary locking mold; 301. Rotary locking mold body; 302. First flange; 303. Mounting groove; 304. Second spring; 305. First positive electromagnet; 4. Positioning assembly; 401. Positioning ring. ; 402, Import; 403, Slot; 404, Limiting Slot; 405, Second Positive Electromagnet; 406, Pressure Sensor; 5, Sealing Mechanism; 501, Gear Ring; 502, Drive Motor; 503, Drive Shaft; 504, Drive Gear; 505, Limiting Frame; 506, Hollow Rod; 507, First Spring; 508, Lifting Rod; 509, Driven Gear; 510, I-shaped Sleeve; 511, Lifting Frame; 512, Positioning Block; 513, Lifting Ring; 514, Lifting Cylinder. Detailed Implementation

[0034] 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.

[0035] The embodiment provides a test device for rapid assembly of concrete impermeability using a rotating mold clamping mechanism, such as... Figures 1-12As shown, the apparatus includes a permeability testing instrument body 1 and multiple rotating snap-fit ​​molds 3 mounted on top of the instrument body 1. The permeability testing instrument body 1 is a conventional concrete permeability testing instrument. The working principle of the instrument body 1 is to apply progressively increasing water pressure to the concrete specimen and observe whether permeation occurs, ultimately determining the material's maximum permeability resistance pressure and thus judging its water permeability resistance. A pressurizing component 2 is installed inside the instrument body 1, and multiple mold mounting positions are located on the top of the instrument body 1. Each mold mounting position is equipped with a positioning component 4, and each rotating snap-fit ​​mold 3 is embedded in its corresponding positioning component 4 and sealed by a sealing mechanism 5. During the permeability test, the concrete specimen is installed in the rotating snap-fit ​​mold 3, and the mold 3 is installed in each mold mounting position. The pressurizing component 2 provides water permeation to each concrete specimen in the rotating snap-fit ​​mold 3 for the permeability test.

[0036] In the embodiments, such as Figure 1 and Figure 4 As shown, each of the rotary locking molds 3 includes a cylindrical mold body 301 and a first flange 302 fixedly connected to the bottom of the mold body 301. A second flange 202 is provided at each mold mounting position on the top of the permeability testing instrument body 1. Figure 6 and Figure 7 As shown, the positioning component 4 includes a positioning ring 401, a second flange 202 located within the positioning ring 401, and a first flange 302 at the bottom of the mold body 301 embedded within the positioning ring 401, with the first flange 302 abutting against the second flange 202. The outer surface of the first flange 302 slides against the inner wall of the positioning ring 401. To increase the sealing performance of the first flange 302 and the second flange 202, a sealing gasket 204 is provided in the second flange 202, and an annular groove matching the sealing gasket 204 is provided in the first flange 302. Figure 6 and Figure 10As shown, each sealing mechanism 5 includes a toothed ring 501, a drive motor 502, a lifting ring 513, a transmission mechanism, and multiple sets of sealing components. The toothed ring 501 is rotatably mounted outside the positioning ring 401, and its bottom is rotatably connected to the body 1 of the permeability testing instrument. The lifting ring 513 is mounted above the positioning ring 401 via at least two sets of lifting cylinders 514. The bottom of the lifting cylinders 514 is fixed to the top plate of the body 1 of the permeability testing instrument, used to control the lifting and lowering of the lifting ring 513. Multiple sets of sealing components are distributed on the lifting ring 513. The drive motor 502 is fixedly mounted on the body 1 of the permeability testing instrument. Each output end of the drive motor 502 is fixedly connected to a drive shaft 503. A drive gear 504 is fixedly sleeved on the outer surface of the drive shaft 503. The drive gear 504 meshes with the toothed ring 501 and is rotatably mounted inside an auxiliary frame. The auxiliary frame is fixedly mounted on the top of the body 1 of the permeability testing instrument. Figure 12 As shown, the vertical height of the drive motor 502 is much smaller than the vertical height of the positioning ring 401. Therefore, during the lifting and lowering process of the lifting ring 513, the height of the drive motor 502 will not affect the lifting and lowering of the lifting ring 513.

[0037] like Figure 6 and Figure 10 As shown, the transmission mechanism includes multiple driven gears 509 meshing around a gear ring 501. Each driven gear 509 is rotatably mounted within a limiting frame 505, which is fixed to the body 1 of the impermeability testing instrument. The multiple driven gears 509 are evenly distributed. The number of sealing components matches the number of driven gears 509, with multiple sets of sealing components correspondingly distributed above each driven gear 509. A hollow rod 506 is movably embedded inside each limiting frame 505. The hollow rod 506 is fixedly connected to the central axis of the driven gear 509, and drives the hollow rod during the rotation of the driven gear 509. When 506 rotates, a first spring 507 is provided on the inner bottom surface of each hollow rod 506. A lifting rod 508 is fixedly connected to the top of each first spring 507. An I-shaped sleeve 510 is fixedly fitted on the outer surface of the lifting frame 511 near the bottom. The top of each hollow rod 506 moves through to the outside of the corresponding limiting frame 505, and the top of each lifting rod 508 moves through to the outside of the corresponding hollow rod 506. Each sealing assembly includes a lifting frame 511 and a positioning block 512 fixed to the bottom of the lifting frame 511. The bottom of the lifting frame 511 is fixedly connected to the top of the corresponding lifting rod 508. The inner wall of each driven gear 509 is fixedly connected to the outer surface of the corresponding hollow rod 506. The top of each lifting cylinder 514 is fixedly connected to the bottom of the corresponding lifting ring 513. The outer surface of each I-shaped sleeve 510 is slidably connected to the inner wall of the corresponding lifting ring 513.

[0038] Multiple mold bodies 301 are respectively embedded inside multiple positioning rings 401. The drive motor 502 of each sealing assembly drives the drive gear 504 to rotate, and drives the corresponding gear ring 501 to rotate through the transmission mechanism. The gear ring 501 drives the multiple driven gears 509 corresponding to it to rotate, driving the multiple positioning blocks 512 to rotate to the top of the first flange 302. The lifting ring 513 drives the multiple positioning blocks 512 corresponding to it to move downward to press and position the mold body 301.

[0039] In this embodiment, when concrete is required to undergo impermeability testing, the pre-prepared concrete impermeability test specimens are first placed into the interiors of multiple mold bodies 301. Then, each rotating snap-fit ​​mold 3 containing the concrete impermeability test specimen is installed at the corresponding positioning component 4 and sealed using the sealing mechanism 5. The installation process for each rotating snap-fit ​​mold 3 involves embedding the first flange 302 at the bottom of the mold body 301 into the positioning ring 401. Then, multiple mold bodies 301 are rotated, causing multiple first flanges 302 to rotate, so that the sealing gasket 204 in the corresponding second flange 202 is precisely embedded in the annular groove of the first flange 302, achieving a sealed connection between the first flange 302 and the second flange 202. At this point, the drive motor 502 can be started via an external control system, causing the drive shaft 503 to rotate, which in turn drives the drive gear 504 to rotate. The rotation of the drive gear 504 drives the gear ring 501 to rotate. For example... Figure 10As shown, the cross-section of the connection between the toothed ring 501 and the body 1 of the permeability testing instrument is L-shaped. This design serves to limit the movement of the toothed ring 501 while facilitating its rotation. The toothed ring 501 drives multiple driven gears 509 to rotate, which in turn drives multiple lifting frames 511 to rotate. This causes multiple positioning blocks 512 to rotate towards the top of the first flange 302. Each lifting frame 511 forms a 90° angle with the toothed ring 501. When the drive motor 502 drives the multiple lifting frames 511 to rotate 90°, the multiple positioning blocks 512 rotate precisely to the top of the first flange 302. At this point, the drive motor 502 can be shut off via an external control system. The drive motor 502 has a self-locking function. Then, the external control system activates two lifting cylinders 514 corresponding to the toothed ring 501, causing them to shorten simultaneously. This causes the lifting ring 513 connected to it to move downwards, which in turn causes the six I-shaped sleeves 510 corresponding to the lifting ring 513 to move downwards, thereby... The six lifting rods 508 corresponding to the I-shaped sleeve 510 move downward, causing the six first springs 507 to shorten. At the same time, as the I-shaped sleeve 510 moves downward, it also drives the lifting frame 511 connected to it to move downward, thereby driving multiple positioning blocks 512 to move downward and press the first flange 302, thus making the first flange 302 and the second flange 202 tightly connected, thereby achieving the positioning of the test mold body 301. When the length shortened by the two lifting cylinders 514 reaches the required value, it indicates that the positioning strength of the test mold body 301 has reached the required value. Through the cooperation between the rotary locking test mold 3, the positioning component 4 and the sealing mechanism 5, the anti-permeability test mold can achieve a rotary locking quick connection, improving the work efficiency of the test mold body 301 installation and reducing the labor intensity of the workers. This solves the problem in the prior art that most concrete anti-permeability test molds require multiple screws to fix the sealing base in the anti-permeability test mold when positioning the concrete, which increases the labor intensity of the workers.

[0040] In the embodiments, such as Figure 7 As shown, each positioning ring 401 has two symmetrically arranged inlets 402 at its top, and two pressure sensors 406 are symmetrically arranged at the top of each positioning ring 401. The line connecting the two inlets 402 is perpendicular to the line connecting the two pressure sensors 406. Figure 8 and Figure 9As shown, a slot 403 is provided on the inner bottom surface of each positioning ring 401 corresponding to the position of each pressure sensor 406. A limiting groove 404 is provided on the top of each positioning ring 401 corresponding to the position of the slot 403. A second positive electromagnet 405 is slidably connected between the opposite inner walls of each limiting groove 404. The two pressure sensors 406 on each positioning ring 401 correspond to the two second positive electromagnets 405 respectively. Two protrusions matching the inlet 402 on the positioning ring 401 are symmetrically provided on the first flange 302 of each rotary locking mold 3. An installation groove 303 is provided in each protrusion. Two second springs 304 are provided on the inner bottom surface of each installation groove 303. A first positive electromagnet 305 is provided on the top of the two second springs 304.

[0041] In this embodiment, during the installation of the test mold body 301, the two protruding parts of the first flange 302 at the bottom of the test mold body 301 are respectively inserted into the interiors of the two corresponding inlets 402. When the protruding parts of the first flange 302 are rotated to the positions corresponding to the two slots 403, the protruding parts of the first flange 302 will fall down into the two corresponding slots 403 under their own gravity, thereby making the sealing gasket 204 in the corresponding second flange 202 fit into the annular groove in the first flange 302, thus realizing the sealing connection between the first flange 302 and the second flange 202.

[0042] To achieve fully automatic positioning of the mold body 301, the first flange 302 rotates inside the positioning ring 401, which also drives two... Figure 5The first positive electromagnet 305 shown rotates, with its two sides sloped to facilitate movement into the positioning ring 401. When the two first positive electromagnets 305 enter the positioning ring 401 through the two inlets 402, they are compressed, causing the corresponding second springs 304 to shorten and move into their corresponding mounting slots 303. When the two protrusions in the first flange 302 rotate into the two corresponding slots 403, the positions of the two first positive electromagnets 305 and the two second positive electromagnets 405 are exactly aligned. At this point, the first positive electromagnets 305 move upward under the elastic force of the two second springs 304, entering the limiting groove 40. Inside the 4, the two first positive electromagnets 305 and two second positive electromagnets 405 can be automatically activated by the external control system. This causes the two opposing positive electromagnets to repel each other in the same direction, thus causing the second positive electromagnet 405 to move upward under the influence of the magnetic field, bringing its outer surface into contact with the pressure sensor 406. The pressure sensor 406 is based on the mechanism of converting physical deformation into electrical signals. By sensing the force exerted by the pressure on the sensor's sensitive element, it converts the pressure signal into a measurable electrical signal, which is then displayed as the corresponding pressure value. The pressure sensor 406 can then automatically transmit the signal to the external control system, which automatically starts the drive motor 502, pushing multiple positioning blocks 512 to press against the first flange 302, thereby achieving automatic pressing and positioning of the sealing base.

[0043] In the embodiments, such as Figure 2 and Figure 3 As shown, the pressurization component 2 includes a water tank 201 disposed within the body 1 of the permeability testing instrument. Multiple permeable plates 203 are fixedly connected to the top of the water tank 201. The number of permeable plates 203 is the same as the number of rotary locking molds 3, and they are respectively installed at each mold mounting position and located within the positioning ring 401. The second flange 202 is fixed to the outside of each permeable plate 203. An air pump 205 is fixedly installed on the outer surface of the body 1 of the permeability testing instrument by screws. The output end of the air pump 205 is fixedly connected to a delivery pipe 206. An inlet pipe 207 is fixedly connected to the outer surface of the water tank 201. A solenoid valve 208 is installed on the outer surface of the inlet pipe 207. A sealing plate 209 is slidably connected inside the water tank 201.

[0044] In this embodiment, after all the test mold bodies 301 have been pressed and positioned, the external water pipe and one end of the inlet pipe 207 can be fixedly connected through a sealing flange. Then, the solenoid valve 208 is closed, and at the same time, the air pump 205 is started, driving the delivery pipe 206 to deliver gas into the water tank 201. This causes the sealing plate 209 to move upward under the pressure of the air. The side of the sealing plate 209 that contacts the water tank 201 is made of rubber material with a sealing function. When the sealing plate 209 moves upward, it pushes the water source upward and permeates into the multiple test molds through the multiple permeable plates 203. The water pressure enters the interior of the main body 301 and then into the interior of the concrete. When the pressure detection device in the main body 1 of the permeability tester detects that the water pressure entering the main body 301 of the test mold reaches the required value, the test is completed. The main body 1 of the permeability tester slowly applies water pressure from the bottom of the concrete through the pressure control system to simulate the water pressure faced by concrete in actual engineering, forcing water to penetrate into the pores and microcracks inside the test block. The vision unit continuously observes the side and surface of the test block and records the water pressure value when the first seepage occurs. If the test block seeps water under a certain pressure, the test is stopped. This is an existing mature technology and will not be described in detail here.

[0045] The usage and working principle of this device are as follows: When it is necessary to test the permeability of concrete specimens, firstly, the pre-prepared concrete permeability test specimens are placed into the interiors of multiple mold bodies 301. Then, the two protruding parts of the multiple first flanges 302 are inserted into the interiors of their corresponding two inlets 402, thereby embedding the protruding parts of the first flanges 302 into the interiors of the positioning rings 401. Then, the multiple mold bodies 301 can be rotated, causing the multiple first flanges 302 to rotate. When the protruding parts of the multiple first flanges 302 rotate to the positions corresponding to the two slots 403, the protruding parts of the first flanges 302 will fall down into the two corresponding slots 403 under their own gravity. This allows the sealing gaskets 204 in the corresponding second flanges 202 to be precisely embedded into the annular grooves in the first flanges 302, completing the sealing connection between the first flanges 302 and the second flanges 202. In addition, the rotation of the first flanges 302 inside the positioning rings 401 also drives the two inlets 402 to rotate. Figure 5The first positive electromagnet 305 shown rotates, with its two sides sloped. When the two first positive electromagnets 305 enter the positioning ring 401 through the two inlets 402, they are compressed, causing the corresponding second springs 304 to be compressed and shortened, thus driving the first positive electromagnets 305 into their corresponding mounting slots 303. When the two protrusions in the first flange 302 rotate into the two corresponding slots 403, the positions of the two first positive electromagnets 305 and the two second positive electromagnets 405 are exactly aligned. At this time, the first positive electromagnets 305 move upward under the elastic force of the two second springs 304, entering... Once inside the limiting groove 404, the two first positive electromagnets 305 and two second positive electromagnets 405 can be automatically activated by the external control system. This causes the two opposing positive electromagnets to repel each other in the same direction, resulting in the second positive electromagnet 405 moving upwards under the influence of the magnetic field, bringing its outer surface into contact with the pressure sensor 406. The pressure sensor 406 then automatically transmits a signal to the external control system, which automatically activates the drive motor 502, causing the drive shaft 503 to rotate. This, in turn, drives the drive gear 504 to rotate. The rotation of the drive gear 504 drives the gear ring 501 to rotate, which in turn drives multiple driven gears 509 to rotate, thereby rotating multiple lifting frames 511. This causes multiple positioning blocks 512 to rotate towards the top of the first flange 302. Multiple lifting frames 511 are at a 90° angle to the gear ring 501. When the drive motor 502 rotates the multiple lifting frames 511 90°, the multiple positioning blocks 512 rotate to the top of the first flange 302. At this point, the drive motor 502, which has a self-locking function, can be shut off via an external control system. Then, the two lifting cylinders 514 corresponding to the gear ring 501 are activated by the external control system, causing them to shorten simultaneously. This causes the lifting ring 513 connected to it to move downwards, which in turn causes the six I-shaped sleeves 510 corresponding to the lifting ring 513 to move downwards, thereby causing the six I-shaped sleeves 510 corresponding to the I-shaped sleeves 510 to move downwards. The lifting rod 508 moves downward, causing the six first springs 507 to shorten. Simultaneously, the I-shaped sleeve 510 moves downward, also causing the connected lifting frame 511 to move downward, thereby driving multiple positioning blocks 512 to move downward and press the first flange 302, thus tightly connecting the first flange 302 and the second flange 202, achieving the positioning of the test mold body 301. When the two lifting cylinders 514 shorten to the required length, it indicates that the positioning strength of the test mold body 301 has reached the required value. After all test mold bodies 301 have been pressed and positioned, the external water pipe and one end of the inlet pipe 207 can be fixedly connected through the sealing flange. Then, the solenoid valve 208 is closed, and the air pump 205 is started.Gas is delivered into the water tank 201 via the conveying pipe 206, causing the sealing plate 209 to move upward under air pressure. The side of the sealing plate 209 in contact with the water tank 201 is made of a sealing rubber material. As the sealing plate 209 moves upward, it pushes the water source upward, allowing it to permeate through multiple permeable plates 203 into the interior of multiple test mold bodies 301, and ultimately into the concrete. The test is complete when the pressure detection device in the permeability testing instrument 1 detects that the water pressure entering the test mold body 301 has reached the required value. The external control system is electrically connected to the permeability testing instrument 1, air pump 205, solenoid valve 208, first positive electromagnet 305, second positive electromagnet 405, pressure sensor 406, drive motor 502, and lifting cylinder 514.

[0046] The wiring diagrams of the permeability testing instrument body 1, air pump 205, solenoid valve 208, first positive electromagnet 305, second positive electromagnet 405, pressure sensor 406, drive motor 502, and lifting cylinder 514 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the permeability testing instrument body 1, air pump 205, solenoid valve 208, first positive electromagnet 305, second positive electromagnet 405, pressure sensor 406, drive motor 502, and lifting cylinder 514 will not be explained in detail.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick-assembly concrete permeability testing device with rotating mold clamping mechanism, comprising a permeability testing instrument body (1), wherein a pressurizing component (2) is provided inside the permeability testing instrument body (1), and multiple mold mounting positions are provided on the top of the permeability testing instrument body (1), characterized in that: The testing device also includes multiple rotating snap-fit ​​molds (3), which are installed at each mold mounting position on the top of the permeability tester body (1). Each mold mounting position is provided with a positioning component (4). Each rotating snap-fit ​​mold (3) is embedded in the corresponding positioning component (4) and sealed by a sealing mechanism (5). Each of the rotating snap-fit ​​molds (3) includes a cylindrical mold body (301) and a first flange (302) fixedly connected to the bottom of the mold body (301). A second flange (202) is provided at each mold mounting position on the top of the permeability tester body (1). The positioning component (4) includes a positioning ring (401). The second flange (202) is located inside the positioning ring (401). The first flange (302) at the bottom of the mold body (301) is embedded in the positioning ring (401), and the first flange (302) and the second flange (202) are connected. Each sealing mechanism (5) includes a drive motor (502), a lifting ring (513), a transmission mechanism, and multiple sealing components. The drive motor (502) is fixedly installed on the body (1) of the impermeability tester. The drive motor (502) is connected to the control end of the lifting frame (511) of each sealing component through the transmission mechanism, driving the lifting frame (511) and the positioning block (512) to rotate, and causing the positioning block (512) to rotate to the first flange (302) and the second flange (202) after docking. Above; the lifting ring (513) is installed above the positioning ring (401) by at least two sets of lifting cylinders (514), and multiple sets of sealing components are distributed on the lifting ring (513). Each sealing component includes a lifting frame (511) and a positioning block (512) fixed at the bottom of the lifting frame (511). The lifting ring (513) is controlled by the lifting cylinder (514) to drive the positioning block (512) to move up and down, and to press and position the rotating snap-fit ​​test mold body (301) when it moves downward.

2. The test mold rotary clamping rapid assembly concrete impermeability testing device according to claim 1, characterized in that: The sealing mechanism (5) also includes a gear ring (501), which is rotatably mounted outside the positioning ring (401). The output end of the drive motor (502) is fixedly connected to a drive shaft (503). The outer surface of the drive shaft (503) is fixedly fitted with a drive gear (504), which meshes with the gear ring (501). The transmission mechanism includes multiple driven gears (509) meshing around the gear ring (501) in accordance with the number of sealing components. Multiple sets of sealing components are distributed above each driven gear (509), and the lifting frame (511) is connected to the central shaft of the corresponding driven gear (509). The drive motor (502) drives the drive gear (504) to rotate the gear ring (501), thereby driving the multiple driven gears (509) and the corresponding sealing components to rotate.

3. The test mold rotary clamping type rapid assembly concrete impermeability testing device according to claim 1 or 2, characterized in that: Two inlets (402) are symmetrically opened on the top of each positioning ring (401), and two pressure sensors (406) are symmetrically arranged on the top of each positioning ring (401). The line connecting the two inlets (402) is perpendicular to the line connecting the two pressure sensors (406). Two protrusions matching the inlets (402) on the first flange (302) of each rotary snap-fit ​​mold (3) are symmetrically arranged on the first flange (302), and an installation groove (303) is opened in each protrusion. Two second springs (304) are arranged on the bottom surface of the inner side of each installation groove (303). A first positive electromagnet (305) is arranged at the top of the two second springs 304. The two sides of the first positive electromagnet (305) are sloped. Each positioning ring (401) has a slot (403) on its inner bottom surface corresponding to the position of each pressure sensor (406). Each positioning ring (401) has a limiting groove (404) on its top surface corresponding to the position of the slot (403). A second positive electromagnet (405) is slidably connected between the inner walls of each limiting groove (404). The two pressure sensors (406) on each positioning ring (401) correspond to the two second positive electromagnets (405) respectively. When the protruding part in the first flange (302) rotates to the position corresponding to the two slots (403), the protruding part in the first flange (302) will fall down into the two corresponding slots (403) under its own gravity.

4. A rapid assembly concrete impermeability testing device based on a rotating mold clamping mechanism according to claim 1 or 2, characterized in that: The pressurization component (2) includes a water tank (201) installed inside the body (1) of the anti-permeability tester. The top of the water tank (201) is fixedly connected to multiple permeable plates (203). The number of permeable plates (203) is the same as the number of rotating snap-fit ​​test molds (3), and they are installed in each test mold installation position and located in the positioning ring (401).

5. A rapid assembly concrete impermeability testing device based on a rotating mold clamping mechanism according to claim 1 or 2, characterized in that: The second flange (202) is fixed to the outside of each permeable plate (203), and a sealing gasket (204) is provided inside each second flange (202). Each first flange (302) has an annular groove that matches the sealing gasket (204). After the second flange (202) is connected to the first flange (302), the sealing gasket (204) in the second flange (202) is embedded in the annular groove in the corresponding first flange (302).

6. The test mold rotary clamping rapid assembly concrete impermeability testing device according to claim 2, characterized in that: The drive gear (504) is rotatably installed inside the auxiliary frame, which is fixedly installed on the top of the permeability tester body (1); the vertical height of the drive motor (502) is less than the vertical height of the positioning ring (401).

7. The test mold rotary clamping type rapid assembly concrete impermeability testing device according to claim 2, characterized in that: Each driven gear (509) is rotatably installed inside a limiting frame (505), which is fixed on the body (1) of the permeability tester. Multiple driven gears (509) are evenly distributed. Hollow rods (506) are movably embedded inside each limiting frame (505). Hollow rods (506) are fixedly connected to the central axis of driven gears (509). A first spring (507) is provided on the bottom surface of each hollow rod (506). A lifting rod (508) is fixedly connected to the top of each first spring (507). The top of each lifting rod (508) movably extends to the outside of the corresponding hollow rod (506). An I-shaped sleeve (510) is fixedly fitted at the bottom of each lifting frame (511), and is fixedly connected to the top of the corresponding lifting rod (508) through the I-shaped sleeve (510).

8. The test mold rotary snap-fit ​​rapid assembly concrete impermeability testing device according to claim 2, characterized in that: The cross-section of the connection between the toothed ring (501) and the body (1) of the anti-permeability tester is L-shaped, and the multiple lifting frames (511) are at 90° to the toothed ring (501). The drive motor (502) has a self-locking function.

9. The test mold rotary clamping type rapid assembly concrete impermeability testing device according to claim 4, characterized in that: An air pump (205) is fixedly installed on the outer surface of the body (1) of the anti-permeability tester by screws. The output end of the air pump (205) is fixedly connected to a delivery pipe (206). The outer surface of the water tank (201) is fixedly connected to a water inlet pipe (207). A solenoid valve (208) is installed on the outer surface of the water inlet pipe (207). A sealing plate (209) is slidably connected inside the water tank (201).

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