A kind of artificial green board waterproof performance detection device

Abstract

The application relates to the technical field of waterproof detection, and discloses a waterproof performance detection device for artificial green plate, which comprises a base, a bearing plate arranged above the base and used for bearing a plate to be detected, a pressure cavity arranged above the plate to be detected and used for water injection detection, a water injection pipe connected to the top of the pressure cavity, a telescopic air cylinder arranged above the pressure cavity and connected with the pressure cavity and used for controlling the vertical movement of the pressure cavity, an exhaust device arranged at the top of the pressure cavity and used for exhausting air during water injection, and wedge-shaped edges arranged outside the pressure cavity and provided with a plurality of locking devices. The device can realize the stable fixation of the plate, the automatic compression and locking of the pressure cavity and the automatic enhancement of the compression force by relying on the water pressure change during the waterproof performance detection of the artificial green plate, effectively avoids the problems of water leakage and displacement of the pressure cavity during the detection process, and improves the accuracy and reliability of the detection result.

Description

Technical Field

[0001] This invention relates to the technical field of waterproof testing, and more particularly to a device for testing the waterproof performance of artificial green building materials. Background Technology

[0002] In the quality testing system for engineered green building materials, waterproof performance is a crucial indicator for measuring their durability and environmental adaptability, and it is also a key testing item in new material testing services. Currently, the most commonly used testing method in the industry is water injection pressure testing. This method typically involves fixing the board to be tested on a testing platform, creating a closed cavity above the board, and injecting water at a certain pressure into the cavity. This causes the board surface to continuously withstand hydrostatic or pressurized water pressure, simulating the stress state of the board in actual use environments such as dampness and water accumulation. After maintaining the set water pressure for a period of time, the back and sides of the board are observed for phenomena such as water stains, dampness, and water droplets. Simultaneously, the water pressure within the cavity is assessed for significant decrease during the testing process to comprehensively determine the waterproof sealing performance and leakage resistance of the board.

[0003] A patent with publication number CN220104808U discloses a waterproof testing device for sheet materials, including a fixed plate. A support plate is connected to the upper end of the fixed plate via two symmetrical first telescopic joints. A testing barrel is fixedly connected to the support plate, and a testing chamber is provided inside the testing barrel. A through hole in the support plate passes through the center of the lower wall of the testing chamber. A collection dish is provided at the upper end of the fixed plate corresponding to the through hole. A detector is detachably fixed at the center of the collection dish, and the detector can detect whether water droplets have entered. An arc-shaped locking block is provided inside the testing chamber. A top plate is connected to the upper end of the fixed plate via two symmetrical second telescopic joints. A pressure device, a pressure rod, and a pressure plate are provided at the center of the top plate. This device can pressurize the sheet material when testing its waterproof performance, and the water pressure on the surface of the sheet material can be adjusted by changing the height of the water at the top of the sheet material.

[0004] The existing technology has the following drawbacks: Existing waterproof performance testing equipment for engineered green building materials still faces several typical problems in practical use. Conventional testing devices often employ a rigid pressing structure with a fixed pressure chamber posture that cannot be adaptively adjusted. When the surface of the tested material has slight unevenness, sealing gaps can easily appear at the contact surface, leading to water leakage and pressure loss during pressurization, affecting the stability of the test. The clamping and locking mechanisms of traditional devices are mostly independently set, and the locking force cannot adaptively increase with changes in water pressure, making it difficult to maintain consistent sealing reliability during continuous pressurization. Furthermore, most devices lack an automatic venting structure, making it difficult to completely remove air from the chamber during water injection, easily causing pressure distortion and requiring manual operation, affecting testing efficiency and data consistency. In addition, the external support and positioning structures of some devices are not flexible enough, requiring numerous pre-alignment and clamping preparation steps, resulting in weak overall coordination. In batch continuous testing scenarios, there is still room for improvement in operational convenience and testing efficiency. Summary of the Invention

[0005] In view of the above-mentioned problems in the existing technology, a device for testing the waterproof performance of artificial green boards is proposed.

[0006] One aspect of this application provides a device for testing the waterproof performance of artificial green building materials, the purpose of which is to improve the sealing performance between the sealed cavity and the building material when applying a water pressure test to the sealed cavity of the building material.

[0007] The technical solution of this invention is: a device for testing the waterproof performance of artificial green boards, including a base, and further comprising: The support plate, located above the base, is used to support the plate to be tested; The pressure chamber is located above the plate to be tested and is used for water injection testing. A water injection pipe is connected to the top of the pressure chamber. A telescopic cylinder is positioned above and connected to the pressure chamber to control its vertical movement. An exhaust device, located at the top of the pressure chamber, is used to expel air during water injection; The pressure chamber has a wedge-shaped edge extending outwards, and multiple locking devices are provided inside the wedge-shaped edge. The locking device includes a locking hole vertically opened on the wedge-shaped edge, a locking block vertically slidingly arranged in the locking hole, the bottom surface of the locking block being inclined, a sliding cavity arranged in the radial direction of the pressure chamber inside the wedge-shaped edge, and a sliding rod slidably arranged in the sliding cavity, one end of the sliding rod abutting against the locking block being inclined, and the other end being connected to a push plate, a wedge-shaped block extending and retracting in the radial direction of the pressure chamber is provided on the outside of the wedge-shaped edge, the wedge block fitting against the wedge-shaped edge, and a locking groove corresponding to the locking block being opened on the wedge block, an elastic inner liner fitting against the pressure chamber, the elastic inner liner extending to the bottom surface of the wedge-shaped edge and fitting against the push plate.

[0008] Furthermore, at least a portion of the top of the locking block is a horizontal plane, and when the locking block is fully lowered into the locking hole, the locking block does not exceed the outer contour of the wedge-shaped edge.

[0009] Furthermore, the surface where the locking groove mates with the top of the locking block is a horizontal surface.

[0010] Furthermore, the locking device includes multiple support columns corresponding to the wedge blocks. The support columns are mounted on the bearing plate, and a crossbar is connected to the support column. A support rod is slidably mounted inside the crossbar. The end of the support rod near the pressure chamber is fixedly connected to the wedge block. A lever is mounted on the wall of the support rod, and a spring is mounted inside the crossbar. The spring is mounted on the support rod and abuts against the lever.

[0011] Furthermore, the support column is rotatably connected to the bearing plate, and a positioning pin is provided on the support column, which is inserted into the bearing plate.

[0012] Furthermore, the pressure chamber is provided with an extension tube, the upper end of which is connected to a water injection pipe, and the lower end of which is in contact with the plate to be tested.

[0013] Furthermore, a platform is provided at the top of the pressure chamber, a ball joint is connected to the lower end of the telescopic cylinder, a floating platform is fixed to the lower end of the ball joint, at least two guide rods are provided on the platform, the upper ends of the guide rods are slidably disposed in the floating platform, and a prestressed spring is provided between the platform and the floating platform.

[0014] Furthermore, a threaded rod is provided on the floating platform, and an adjustment knob is provided on the threaded rod, which abuts against the prestressed spring.

[0015] Furthermore, the exhaust device includes a valve body with an air outlet at the top and an air inlet on the side. The air outlet is connected to the top surface of the inner wall of the pressure chamber. A valve core that slides up and down is provided inside the valve body. The valve core has a valve hole connecting the air outlet and the air inlet. A notch is provided at the bottom of the valve core. A hinge frame is provided on the outer wall of the valve body. A trigger rod is rotatably mounted on the hinge frame. The end of the trigger rod is engaged in the notch. The other end of the trigger rod is connected to a swing rod. A buoyancy ball is provided at the end of the swing rod. A second spring is provided inside the valve body to apply an upward elastic force to the valve core.

[0016] Furthermore, a seal is provided where the extension tube passes through the pressure chamber and the elastic inner liner.

[0017] The beneficial effects of this invention are: Self-adaptive fit ensures reliable sealing. Utilizing a small-angle floating ball joint, pre-stressed spring compression, and an elastic inner liner structure, it can adapt to uneven materials, significantly reducing the risk of leakage during testing and ensuring stable water pressure testing.

[0018] Water pressure self-locking booster ensures high detection accuracy. The locking mechanism automatically engages and locks in place based on the water injection pressure. Higher water pressure results in stronger clamping force, eliminating the need for additional locking power. Sealing and locking are achieved simultaneously, leading to more accurate detection data.

[0019] Automatic venting requires no manual intervention. The venting device automatically removes air from the chamber during water filling and automatically closes the air passage to form a sealed chamber once the water level is reached, preventing air from affecting pressurization, simplifying operation and improving test consistency.

[0020] The structure features efficient linkage, making it suitable for batch testing of sheet materials. The entire process—fixing, pressure chamber pressing, locking and holding, and pressure release and reset—is interconnected. Combined with a rotatable elastic wedge block structure, clamping and preparation are quick, and the overall process is simple, making it suitable for continuous batch testing. Attached Figure Description

[0021] Figure 1 This is a perspective view of the waterproof performance testing device for artificial green boards according to the present invention; Figure 2 This is a perspective view of the connection between the telescopic cylinder and the pressure chamber in the waterproof performance testing device for artificial green boards of the present invention. Figure 3 For the present invention Figure 2 Top view; Figure 4 For the present invention Figure 3 Sectional view at point AA; Figure 5 This is a perspective view of the support plate in the waterproof performance testing device for artificial green boards of the present invention; Figure 6 For the present invention Figure 5 Top view; Figure 7 For the present invention Figure 6 Sectional view at the middle BB point; Figure 8 For the present invention Figure 7 Enlarged view of point C in the middle; Figure 9 This is a top view of the pressure chamber in the waterproof performance testing device for artificial green boards of the present invention; Figure 10 This is a bottom view of the pressure chamber in the waterproof performance testing device for artificial green boards of the present invention; Figure 11 This is a perspective view of the exhaust device in the waterproof performance testing device for artificial green boards of the present invention; Figure 12 This is a half-sectional view of the exhaust device in the waterproof performance testing device for artificial green boards of the present invention.

[0022] In the picture: 1. Base; 2. Bearing plate; 3. Pressure chamber; 4. Water injection pipe; 5. Telescopic cylinder; 6. Exhaust device; 7. Wedge edge; 8. Locking hole; 9. Locking block; 10. Sliding chamber; 11. Sliding rod; 12. Push plate; 13. Wedge block; 14. Locking groove; 15. Elastic inner liner; 16. Support column; 17. Crossbar; 18. Support rod; 19. Toggle lever; 20. Spring 1; 21. Positioning pin; 22. Extension tube; 23. Platform; 24. Ball joint; 25. Floating platform; 26. Guide rod; 27. Prestressed spring; 28. Threaded rod; 29. ​​Adjustment knob; 30. Valve body; 31. Air outlet; 32. Air inlet; 33. Valve core; 34. Valve hole; 35. Hinge frame; 36. Trigger rod; 37. Swing rod; 38. Buoyancy ball; 39. Spring 2; 40. Seal. Detailed Implementation

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] Example, refer to Figures 1-8 This invention provides a device for testing the waterproof performance of artificial green building materials. The device includes a base 1 as the basic support structure, with a support plate 2 positioned above the base 1. The support plate 2 stably places and supports the artificial green building material to be tested, providing a stable foundation for testing and ensuring the material's position remains fixed during the testing process. A pressure chamber 3 is positioned above the material to be tested, serving as the core cavity for water injection testing. A water injection pipe 4 is connected above the pressure chamber 3, allowing water to be introduced into it for pressurized testing of the material's waterproof performance. A telescopic cylinder 5 is fixedly mounted on the base 1 via a vertical bracket. The telescopic cylinder 5 is located above the pressure chamber 3, with its push rod end fixedly connected to the pressure chamber 3. The telescopic cylinder 5's extension and retraction movement stably controls the vertical movement of the pressure chamber 3, enabling the pressure chamber 3 to be pressed against and separated from the material to be tested.

[0025] An exhaust device 6 is installed at the top of the pressure chamber 3. During the process of injecting water into the pressure chamber 3, the exhaust device 6 continuously discharges the air inside the chamber, preventing the air remaining in the chamber from affecting the accuracy of water pressure detection and ensuring a smooth and stable water injection and pressurization process. The device is equipped with four fixed cylinders around the test plate. The push rod of each fixed cylinder is connected to a pressure claw. By synchronously driving the pressure claws through multiple fixed cylinders, the test plate can be pressed and fixed from different directions, preventing displacement and warping of the plate during the test and ensuring the stability of the test operation. A wedge-shaped edge 7 extends outward from the outer side of the pressure chamber 3. Four sets of locking devices are installed inside the wedge-shaped edge 7. The locking devices serve as the structure for locking and pressurizing the pressure chamber 3. Specifically, a locking hole 8 is vertically opened on the wedge-shaped edge 7, and a locking block 9 is vertically slidably mounted inside the locking hole 8. The cross-sections of both the locking hole 8 and the locking block 9 are elliptical. This shape restricts the locking block 9 to only slide up and down along the locking hole 8, preventing circumferential rotation of the locking block 9 and ensuring the reliability of the locking action. The bottom surface of the locking block 9 is designed with a slope. A sliding cavity 10 is formed inside the wedge-shaped edge 7 along the radial direction of the pressure chamber 3. A sliding rod 11 is slidably mounted inside the sliding cavity 10. The end of the sliding rod 11 that abuts against the locking block 9 is also sloped. The two sloped ends cooperate to achieve transmission. The end of the sliding rod 11 away from the locking block 9 is connected to a push plate 12. A return spring is fitted on the sliding rod 11. The two ends of the return spring abut against the inner wall of the sliding cavity 10 and the push plate 12 respectively, providing an inward repositioning driving force for the sliding rod 11 and the push plate 12. A wedge-shaped block 13, which can extend and retract along the radial direction of the pressure chamber 3, is correspondingly provided on the outer side of the wedge-shaped edge 7. The inner end face of the wedge block 13 fits snugly against the outer wall of the wedge-shaped edge 7. A locking groove 14, corresponding to the position of the locking block 9, is formed on the wedge block 13 for engaging with the locking block 9 to achieve locking.

[0026] An elastic inner liner 15 is fitted inside the pressure chamber 3, extending downwards to the bottom surface of the wedge-shaped edge 7. The outer wall of the elastic inner liner 15 is in close contact with the push plate 12. After water is injected into the pressure chamber 3 through the water injection pipe 4, the water directly fills the interior of the elastic inner liner 15. Transmission and sealing are achieved through the deformation of the elastic inner liner 15. The pressure chamber 3 is also equipped with an extension pipe 22. The upper end of the extension pipe 22 is connected to the water injection pipe 4, and the lower end extends to contact the surface of the plate to be tested. A sealing element 40 is installed at the position where the extension pipe 22 passes through the pressure chamber 3 and the elastic inner liner 15. The sealing element 40 can effectively seal the fitting gap between the extension pipe 22 and the pressure chamber 3 and the elastic inner liner 15, preventing water leakage and ensuring the overall sealing performance of the structure. At least a portion of the top of the locking block 9 is set as a horizontal surface. When the locking block 9 falls completely back into the locking hole 8, the top of the locking block 9 does not exceed the outer contour of the wedge edge 7, thus avoiding interference with the extension and retraction movement of the wedge block 13. The contact surface between the locking groove 14 on the wedge block 13 and the top of the locking block 9 is also a horizontal surface, which can improve the stability and uniformity of the snap-fit ​​engagement.

[0027] When the device is in operation, the artificial green board to be tested is first placed stably on the support plate 2. Then, multiple fixing cylinders are activated to press and fix the board around its perimeter using pressure claws. After the board is fixed, the telescopic cylinder 5 is activated. The push rod of the telescopic cylinder 5 drives the pressure chamber 3 to move vertically downward until the bottom surface of the elastic inner liner 15 is tightly attached to the upper surface of the board. During the downward movement of the pressure chamber 3, the outer wall of the wedge edge 7 will squeeze the wedge block 13, causing the wedge block 13 to retract radially. After the wedge edge 7 has completely passed, the wedge block 13 extends again under the action of its own reset structure and attaches to the outer wall of the wedge edge 7. Subsequently, water is injected into the pressure chamber 3 through an external pressure pump and water injection pipe 4. During the water injection process, the air venting device 6 simultaneously discharges the air in the pressure chamber 3. After the elastic inner liner 15 is filled with water, the water injection continues under pressure. The elastic inner liner 15 expands and deforms under the action of water pressure, and then pushes the push plate 12 outward. The push plate 12 is driven by the force to move the sliding rod 11 outward along the sliding chamber 10. The inclined surface at the end of the sliding rod 11 continuously presses the inclined surface at the bottom of the locking block 9, driving the locking block 9 to slide upward along the locking hole 8. After the locking block 9 moves upward, its top end is inserted into the locking groove 14 of the wedge block 13 to achieve a snap-fit ​​engagement. This locking action serves two purposes: firstly, it locks the position of the pressure chamber 3 relative to the wedge block 13, preventing the pressure chamber 3 from shifting upwards under water pressure; secondly, as the water pressure inside the pressure chamber 3 increases, the squeezing force of the elastic inner liner 15 on the push plate 12 increases accordingly, and the locking force between the locking block 9 and the locking groove 14 simultaneously strengthens. The locking block 9 provides additional downward pressure to the pressure chamber 3 through the wedge edge 7, and the greater the water pressure, the greater the downward pressure, further improving the sealing and compression effect between the elastic inner liner 15 and the test plate. After the waterproof performance test is completed, the water inside the pressure chamber 3 and the elastic inner liner 15 is extracted through the extension tube 22. The internal pressure of the elastic inner liner 15 decreases, and the push plate 12 moves inwards under the elastic reset action of the return spring, driving the sliding rod 11 to reset. After the locking block 9 loses its squeezing force, it falls back to its initial position along the locking hole 8, releasing the locking state with the locking groove 14. The locking state of the pressure chamber 3 is then released. At this time, activating the telescopic cylinder 5 can lift the pressure chamber 3 upwards, completing a single test process.

[0028] Reference Figures 5-7The locking device also includes four support columns 16 corresponding to the wedge blocks 13. Each support column 16 is mounted on the bearing plate 2. A crossbar 17 is fixedly connected to the upper end of each support column 16. A guide groove is axially formed inside the crossbar 17, and a support rod 18 is movably mounted within the groove. The support rod 18 can slide horizontally along the length of the crossbar 17. One end of the support rod 18 near the pressure chamber 3 is fixedly connected to the wedge block 13. A lever 19 is fixedly mounted on the outer wall of the support rod 18. A spring 20 is mounted inside the crossbar 17, sleeved on the outside of the support rod 18. One end of the spring 20 abuts against the lever 19, and the other end engages with the inner wall of the crossbar 17, thereby providing a continuous elastic thrust to the support rod 18. The support column 16 and the bearing plate 2 are assembled by a rotating connection. A positioning pin 21 is provided at the corresponding position at the lower end of the support column 16. The positioning pin 21 is inserted downward into the pre-set positioning hole inside the bearing plate 2. The positioning pin 21 limits the circumferential position and fixes the support column 16 radially, effectively improving the vertical load-bearing capacity and stress stability of the crossbar 17 during the testing process. The above-mentioned overall structure can provide a stable and continuous elastic expansion and contraction force for the wedge block 13, ensuring that the wedge block 13 can always elastically and tightly fit the wedge edge 7 on the outside of the pressure chamber 3 during the working process, ensuring that the two are tightly and reliably matched.

[0029] When the device performs testing, the artificial green board to be tested is first placed stably on the support plate 2, ensuring the board is centered and level. Then, multiple fixing cylinders are activated, driving the end pressure claws to move synchronously, uniformly pressing and fixing the board around its perimeter to prevent it from shifting or warping during testing. After fixing the board, the corresponding number of crossbars 17 are rotated around the support column 16 to the working position, so that the inner side of the wedge block 13 fits against the wedge edge 7 of the pressure chamber 3. This completes the structural preparation work before water injection and pressurization testing, providing a stable foundation for subsequent locking and pressurization processes.

[0030] Reference Figures 2-4A platform 23 is fixedly mounted on the top of the pressure chamber 3. A ball joint 24 is connected and assembled to the lower end of the telescopic cylinder 5. The ball joint 24 can swing freely within a set angle range, with the swing angle controlled within ±5°. Through the floating adaptation effect of the ball joint 24, the pressure chamber 3 can autonomously adjust its posture during the pressing process to better fit the test plate with slight unevenness on the surface, ensuring a good contact seal. A floating platform 25 is fixedly connected to the lower end of the ball joint 24. Two guide rods 26 are vertically mounted on the platform 23. The upper ends of the guide rods 26 are correspondingly slidably fitted inside the floating platform 25. The multiple guide rods 26 form a guide and limiting structure, restricting the floating platform 25 and the platform 23 to only generate relative displacement in the vertical direction, avoiding circumferential rotation or radial offset. A prestressed spring 27 is correspondingly mounted between the platform 23 and the floating platform 25. The prestressed spring 27 is in a normal pre-compression state, providing continuous elastic force for both. The floating table 25 is also equipped with a threaded rod 28, and an adjustment knob 29 is mounted on the threaded rod 28. The lower end of the adjustment knob 29 abuts against the prestressed spring 27. By rotating the adjustment knob 29, the initial compression of the prestressed spring 27 can be changed, thereby adjusting the magnitude of the prestress to adapt to different testing pressures and plate working conditions.

[0031] When the telescopic cylinder 5 applies downward pressure, the floating platform 25 moves down and squeezes the prestressed spring 27, gradually reducing the distance between the floating platform 25 and the frame 23. The prestressed spring 27 continuously provides uniform and stable clamping force under compression, pressing the pressure chamber 3 tightly against the surface of the plate to be tested, effectively preventing water in the pressure chamber 3 from leaking from the contact gap during the pressurization test, ensuring the sealing of the test process and the accuracy of the test data.

[0032] Reference Figures 11-12 The exhaust device 6 mainly consists of a valve body 30. The valve body 30 has an outlet 31 on its top and an inlet 32 ​​on its side. The outlet 31 is connected to the top surface of the inner wall of the pressure chamber 3, allowing gas inside the pressure chamber 3 to smoothly enter the valve body 30. Inside the valve body 30 is a valve core 33 that can slide axially up and down. The valve core 33 has a valve hole 34 for connecting the outlet 31 and the inlet 32. When the valve core 33 is in its initial position, the valve hole 34 keeps the inlet 32 ​​and outlet 31 in communication. A notch is formed at the bottom of the valve core 33. A hinge frame 35 is fixedly mounted on the outer wall of the valve body 30. A trigger rod 36 is rotatably mounted on the hinge frame 35. One end of the trigger rod 36 is engaged in the notch at the bottom of the valve core 33, and the other end is connected to a swing rod 37. A buoyancy ball 38 is provided at the end of the swing rod 37 away from the trigger rod 36. A second spring 39 is also provided inside the valve body 30. The second spring 39 applies a continuous upward elastic pushing force to the valve core 33, so that the valve core 33 remains in the upper position when there is no external force, and the valve hole 34 is kept open.

[0033] When water is injected into the pressure chamber 3 for testing, the air inside the pressure chamber 3 is discharged outward through the air inlet 32, valve hole 34, and air outlet 31, achieving automatic air venting during the water injection process. As the water level in the chamber continues to rise, the water surface contacts and lifts the buoyancy ball 38. Under the action of buoyancy, the buoyancy ball 38 drives the swing rod 37 to rotate upward, which in turn drives the trigger rod 36 to swing downward around the hinge frame 35. The trigger rod 36 pulls the valve core 33 downward through the snap-fit ​​engagement with the notch, so that the valve hole 34 on the valve core 33 is offset from the air inlet 32 ​​and air outlet 31 and the passage is closed, completing the automatic air shut-off seal. After the valve hole 34 is closed, the pressure chamber 3 forms a closed cavity. Continuing to inject water will cause the water pressure in the cavity to rise steadily, entering the pressure testing state, ensuring that the waterproof performance test is carried out normally under the set water pressure.

[0034] Working principle of the invention: When the waterproof performance testing device for artificial green boards of the present invention is working, the board to be tested is first placed on the support plate 2. Multiple fixed cylinders drive the pressure claws to press and fix the board around its perimeter. Then, the crossbar 17 on the support column 16 is rotated so that the wedge block 13 and the wedge edge 7 on the outside of the pressure chamber 3 are elastically fitted. Then, the telescopic cylinder 5 is activated to press down. The telescopic cylinder 5 drives the floating platform 25 and the frame 23 to move down through the ball joint 24. The ball joint 24 can swing within a small angle to adapt to uneven boards. At the same time, the preload of the prestressed spring 27 is adjusted by adjusting the knob 29 so that the elastic inner liner 15 at the bottom of the pressure chamber 3 is tightly fitted to the surface of the board to be tested. During the water filling stage, water enters the elastic inner liner 15 of the pressure chamber 3 through the water filling pipe 4 and the extension pipe 22. The exhaust device 6 remains open during the initial water filling stage. Air in the pressure chamber 3 is smoothly discharged through the air inlet 32, valve hole 34 and air outlet 31 on the valve body 30. As the water level rises, the buoyancy ball 38 is driven by buoyancy to move the swing rod 37 and the trigger rod 36. The trigger rod 36 pushes the bottom notch of the valve core 33 and overcomes the elastic force of the spring 39 to move the valve core 33 down. The valve hole 34 closes to achieve automatic sealing. When pressurization and water injection continue, the elastic inner liner 15 expands under water pressure and pushes the push plate 12 outward. The push plate 12 drives the sliding rod 11 to move along the sliding cavity 10. The inclined surface at the end of the sliding rod 11 pushes the locking block 9 to slide upward along the elliptical locking hole 8, so that the locking block 9 is engaged in the locking groove 14 of the wedge block 13. On the one hand, it locks the position of the pressure cavity 3, and on the other hand, it provides a continuously increasing downward pressure to the pressure cavity 3 as the water pressure increases, further improving the sealing effect. After the test is completed, the water in the cavity is extracted through the extension tube 22, the elastic inner liner 15 contracts, the sliding rod 11 moves back under the action of the return spring, the locking block 9 falls back to release the lock, and finally the telescopic cylinder 5 lifts the pressure cavity 3, completing one waterproof performance test process.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A kind of artificial green board waterproof performance detection device, including base (1), it is characterized in that: Also includes: The support plate (2) is set above the base (1) and is used to support the plate to be tested; The pressure chamber (3) is set above the plate to be tested and is used for water injection testing. A water injection pipe (4) is connected above the pressure chamber (3). Telescopic cylinder (5) is located above pressure chamber (3) and connected to pressure chamber (3) to control the vertical movement of pressure chamber (3); An exhaust device (6) is located at the top of the pressure chamber (3) and is used to exhaust air during water injection; The pressure chamber (3) is provided with a wedge-shaped edge (7) facing outwards, and multiple sets of locking devices are provided inside the wedge-shaped edge (7). The locking device includes a locking hole (8) vertically opened on the wedge-shaped edge (7), and a locking block (9) is vertically slidably arranged inside the locking hole (8). The bottom surface of the locking block (9) is an inclined surface. A sliding cavity (10) is provided inside the wedge-shaped edge (7) along the radial direction of the pressure chamber (3), and a sliding rod (11) is slidably arranged inside the sliding cavity (10). The sliding rod (11) and the locking block (9) are connected. One end of the wedge is an inclined surface, and the other end is connected to a push plate (12). A wedge block (13) that extends and retracts in the radial direction of the pressure chamber (3) is provided on the outside of the wedge edge (7). The wedge block (13) fits into the wedge edge (7). A locking groove (14) corresponding to the locking block (9) is opened on the wedge block (13). An elastic inner liner (15) is fitted into the pressure chamber (3). The elastic inner liner (15) extends to the bottom surface of the wedge edge (7) and the elastic inner liner (15) fits into the push plate (12).

2. The device for detecting waterproof performance of artificial green board according to claim 1, characterized in that: At least a portion of the top of the locking block (9) is horizontal, and when the locking block (9) falls completely into the locking hole (8), the locking block (9) does not exceed the outer contour of the wedge edge (7).

3. The waterproof performance testing device for artificial green boards according to claim 2, characterized in that: The surface on which the locking groove (14) and the top of the locking block (9) meet is a horizontal surface.

4. The device for detecting waterproof performance of artificial green board according to claim 1, characterized in that: The locking device includes multiple support columns (16) corresponding to the wedge block (13). The support columns (16) are set on the bearing plate (2). A crossbar (17) is connected to the support column (16). A support rod (18) is slidably arranged in the crossbar (17). The end of the support rod (18) near the pressure chamber (3) is fixedly connected to the wedge block (13). A lever (19) is provided on the wall of the support rod (18). A spring (20) is provided in the crossbar (17). The spring (20) is sleeved on the support rod (18) and abuts against the lever (19).

5. The device for detecting waterproof performance of artificial green board according to claim 4, characterized in that: The support column (16) is rotatably connected to the bearing plate (2), and a positioning pin (21) is provided on the support column (16), which is inserted into the bearing plate (2).

6. The device for detecting waterproof performance of artificial green board according to claim 1, characterized in that: The pressure chamber (3) is provided with an extension tube (22), the upper end of which is connected to the water injection pipe (4), and the lower end is in contact with the plate to be tested.

7. The device for detecting waterproof performance of artificial green board according to claim 1, characterized in that: The pressure chamber (3) is provided with a platform (23) at the top. The lower end of the telescopic cylinder (5) is connected to a ball joint (24). The lower end of the ball joint (24) is fixed with a floating platform (25). At least two guide rods (26) are provided on the platform (23). The upper end of the guide rods (26) is slidably disposed in the floating platform (25). A prestressed spring (27) is provided between the platform (23) and the floating platform (25).

8. The device for detecting waterproof performance of artificial green board according to claim 7, characterized in that: The floating platform (25) is provided with a threaded rod (28), and an adjustment knob (29) is provided on the threaded rod (28). The adjustment knob (29) abuts against the prestressed spring (27).

9. The device for detecting waterproof performance of artificial green board according to claim 1, characterized in that: The exhaust device (6) includes a valve body (30), with an air outlet (31) on the top and an air inlet (32) on the side. The air outlet (31) is connected to the top surface of the inner wall of the pressure chamber (3). A valve core (33) that slides up and down is provided inside the valve body (30). A valve hole (34) connecting the air outlet (31) and the air inlet (32) is provided on the valve core (33). A notch is provided at the bottom of the valve core (33). A hinge frame (35) is provided on the outer wall of the valve body (30). A trigger rod (36) is rotatably provided on the hinge frame (35). The end of the trigger rod (36) is engaged in the notch. The other end of the trigger rod (36) is connected to a swing rod (37). A buoyancy ball (38) is provided at the end of the swing rod (37). A spring (39) is provided inside the valve body (30) to apply an upward elastic force to the valve core (33).

10. The device for detecting waterproof performance of artificial green board according to claim 6, characterized in that: A seal (40) is provided at the point where the extension tube (22) passes through the pressure chamber (3) and the elastic inner liner (15).

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