A water permeability testing device and method for bridge joints

Abstract

The present invention discloses a water permeability testing device and method for bridge joints, belonging to the field of water permeability testing technology, comprising a movable frame, a downward pressure electric cylinder, a pressure sensor, and a width limit adjustment mechanism; wherein the width limit adjustment mechanism comprises a sleeve block, a support frame, a linkage screw, a reduction motor, two sleeve blocks, a pressure plate, a width limit plate, and a sealing strip; wherein a flip limit adjustment mechanism is installed on one side of the downward pressure electric cylinder. The present invention adjusts the distance value between the two width limit plates through the width limit adjustment mechanism, thereby sealing and squeezing the bridge joint at both sides of the upper surface. In this way, water permeability testing can be performed for bridge joints of different widths, making the water permeability test more widely applicable, thereby solving the problem that it is difficult to perform water permeability testing for bridge joints of different widths and the water permeability test has poor applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of water permeability testing, and in particular to a water permeability testing device and method for bridge joints. Background Art

[0002] Bridge joints are weak links in the bridge structure, easily affected by external environmental factors and prone to water seepage. Regular testing of bridge joints using a water seepage tester can promptly identify and address potential water seepage issues, thereby preventing damage to the bridge structure and accidents caused by water seepage.

[0003] Among existing technical documents, Chinese utility model patent publication number CN220207380U discloses a bridge joint water permeability test device. This device primarily contacts the test surface through a sealing sleeve. The weight of the counterweight and the test device as a whole presses the sealing sleeve against the test surface, preventing the water outlet from directly pressing against the test surface, which could easily cause leakage and lead to inaccurate or even failed tests. However, this device still has the following drawbacks when performing water permeability tests.

[0004] During the water permeability test of bridge joints, the bridge joints need to be sealed and limited first, and then water is poured into the joints to detect water level changes, so as to know whether the bridge joints have seepage. For bridge joints of different widths, matching devices need to be customized for testing. It is difficult to implement water permeability tests for bridge joints of different widths, and the applicability of water permeability tests is poor. Therefore, it is necessary to provide a water permeability testing device and method for bridge joints. Summary of the Invention

[0005] To this end, the present invention provides a device and method for testing the water permeability of bridge joints.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water permeability testing device for bridge connection joints, comprising a movable frame, a lower pressure electric cylinder and a pressure sensor, the lower pressure electric cylinder is fixedly mounted on one side of the movable frame, the pressure sensor is fixedly mounted on the output end of the lower pressure electric cylinder, and the bottom end of the pressure sensor is installed with a width limit adjustment mechanism; the width limit adjustment mechanism includes a sleeve block fixedly mounted on the bottom end of the pressure sensor, and the bottom end of the sleeve block is fixedly connected to a support frame, and the internal rotation of the support frame is connected to a linkage screw; a reduction motor is fixedly mounted on one end of the support frame, the output end of the reduction motor is fixedly connected to the linkage screw, the outer wall of the linkage screw is threadedly connected to two sleeve blocks, and the bottom end of each sleeve block is fixedly mounted with a pressure plate; the bottom end of each pressure plate is fixedly mounted with a width limiting plate, and the bottom end of each width limiting plate is bonded with a sealing strip; a flip limit adjustment mechanism is installed on one side of the lower pressure electric cylinder.

[0007] Preferably, the two sleeve blocks are slidably connected to the support frame, and the two threads on the outer wall of the linkage screw are opposite and symmetrically arranged; the inner wall of the support frame and the outer walls of the two sleeve blocks are smooth surfaces. The cross-sections of the two sealing strips are both rectangular, and both of the sealing strips are made of rubber. Preferably, a sensing block is fixedly installed on one side of one of the width limiting plates, and a width distance sensor is installed on one side of the sensing block; the width distance sensor is fixedly connected to the other width limiting plate; support blocks are installed on both sides of the sleeve blocks, and the two support blocks are fixedly connected to the support frame, and a sliding rod is fixedly installed on the top of each support block; the two sliding rods are slidably connected to the movable frame.

[0008] A support plate is fixedly installed on one side of the outer wall of the support frame, and a test water tank for containing test water is fixedly installed on the bottom end of the support plate, and the test water tank is slidably connected to the movable frame, and a suction pipe is fixedly connected to the inner wall of the test water tank, and the top end of the suction pipe is fixedly connected to a pump, and the output end of the pump is threadedly connected to a delivery pipe, and a threaded cover threadedly connected to the test water tank is installed on one side of the support plate; a battery is installed on one side of the movable frame, and a controller is installed on one side of the battery, and the battery is used to power the controller, and the controller and the movable frame are fixedly connected to the battery.

[0009] In this technical solution, a reduction motor drives the linkage screw to rotate, which in turn moves the two sleeve blocks toward each other under the influence of threaded force. Simultaneously, the two sleeve blocks, each carrying two pressure plates, move toward each other, while the two width limiters, each carrying two sealing strips, move toward each other. This causes one width limiter to move the sensing block to the left, while the other width limiter moves the width distance sensor to the right. The width distance sensor senses the distance between the sensing block and the sensing block. When the sensed value matches the value set by the controller, the reduction motor is turned off by the controller.

[0010] Preferably, the flip limit adjustment mechanism includes a linkage electric cylinder slidably mounted on one side of the downward pressure electric cylinder; the linkage electric cylinder is fixedly connected to the sleeve block, and the output end of the linkage electric cylinder is fixedly connected to the hinge block, and both sides of the inner wall of the hinge block are fixedly connected to the hinge shaft, and the outer wall of each hinge shaft is rotatably connected to the sleeve shaft; the inner wall of the sleeve shaft is rotatably connected to a support shaft away from the position of the hinge shaft, and a sleeve slider is fixedly mounted on one end of the support shaft, and the outer wall of the sleeve slider is provided with a slide frame, and the two sleeve sliders are slidably connected to the slide frame.

[0011] A pillar is fixedly mounted on one side of the inner wall of the sliding frame, and the two sleeved sliders are slidably connected to the pillar. A rack is fixedly mounted on one side of the sleeved slider, and a gear is meshingly connected to one side of the sliding frame. A rotating rod is fixedly connected to the inner wall of the gear, and the outer wall of the rotating rod is rotatably connected to the sliding frame. A flip plate is fixedly mounted on the bottom end of each rotating rod, and a sealing strip is bonded to the lower surface of the flip plate, and a rubber cover is bonded to the outer wall of the flip plate. A positioning test assembly is mounted on the bottom end of the sliding frame. The two hinge shafts are symmetrically arranged about the hinge block, and the sealing strip and rubber cover are both made of rubber.

[0012] In this technical solution, the output end of the linked electric cylinder moves downward along the inner wall of the sleeve block. The hinge block drives the two hinge shafts to move downward synchronously, so that the hinge shaft drives the top of the sleeve shaft to move downward, the distance between the two support shafts increases, and the two support shafts respectively drive the distance between the two sleeve sliders to increase, the two sleeve sliders slide along the outer wall of the pillar, and the two sleeve sliders slide along the inner wall of the slide frame. The rack drives the gear to engage and rotate counterclockwise, while the other rack drives the other gear to engage and rotate clockwise. The rotating rod drives the flip plate to rotate counterclockwise, and the flip plate simultaneously drives the rubber jacket to rotate counterclockwise, so that the rubber jacket is in extrusion contact with the two width limit plates, forming an extrusion sealing operation. The other rubber jacket is also in extrusion contact with the two width limit plates.

[0013] Preferably, the positioning test assembly includes a socket plate fixedly mounted on the bottom end of the slide frame;

[0014] A water level distance sensor is fixedly installed on the inner wall of the socket plate, a guide column is fixedly installed on the lower surface of the socket plate, and the outer wall of the guide column is slidably connected to the sensing sleeve; the lower surface of the sensing sleeve is fixedly connected to the buoyancy sleeve, and the lower surface of the buoyancy sleeve is provided with a limiting ring fixedly connected to the guide column, and the buoyancy sleeve and the outer wall of the guide column are slidably connected, and the limiting ring is used to support the buoyancy sleeve, and support plates are fixedly connected on both sides of the sliding frame, and the two support plates are fixedly connected to the support frame, and the buoyancy sleeve and the limiting ring are slidably connected, and the outer wall of the guide column and the inner wall of the sensing sleeve and the inner wall of the buoyancy sleeve are all set to smooth surfaces.

[0015] In this technical solution, the buoyancy of the water causes the buoyancy sleeve to move upward, and the buoyancy of the buoyancy sleeve causes the sensing sleeve to slide upward. The sensing sleeve and the buoyancy sleeve slide upward along the outer wall of the guide column, and the sensing sleeve approaches the water level distance sensor. The socket plate supports the water level distance sensor, and the distance between the water level distance sensor and the sensing sleeve is sensed by the water level distance sensor. When the value sensed by the water level distance sensor is the same as the value set by the controller, the pump is turned off by the controller to stop water injection. At the same time, the controller records the value sensed by the water level distance sensor at this time and observes the change in the value sensed by the water level distance sensor. If the change exceeds the value specified on the controller, the water permeability of the bridge joint is unqualified. If the change is within the value range specified on the controller, the water permeability of the bridge joint is qualified.

[0016] A method for testing water permeability of bridge joints, the method comprising the following steps:

[0017] Step 1: Width limit adjustment: two width limit plates are used to move two sealing strips closer to each other. When the sensed value is the same as the value set by the controller, the controller turns off the reduction motor.

[0018] Step 2: Flip limit adjustment. Use the controller to start the linkage electric cylinder. The two sleeve sliders drive the distance between the two racks to increase. The rubber cover is squeezed and contacted with the two width limit plates. The other rubber cover is also squeezed and contacted with the two width limit plates.

[0019] Step 3: Constant force sealing: Press the electric cylinder downward to push the pressure sensor downward, and the two sealing strips are squeezed on both sides of the upper surface of the bridge joint. The two sealing strips and two sealing support strips are squeezed on the bridge joint according to the specified pressure;

[0020] Step 4: Positioning test: Pour test water into the test space surrounded by two sealing strips and two test water tanks through the delivery pipe. Use the water level distance sensor to sense the distance between the water level distance sensor and the sensing block. The controller records the value sensed by the water level distance sensor at this time and observes the water level changes. In this way, the water permeability test operation can be realized according to the different widths of the bridge connection seams.

[0021] The present invention has the following advantages:

[0022] 1. The present invention uses a width limit adjustment mechanism, and a reduction motor drives the linkage screw to rotate. The linkage screw can drive the two socket blocks to approach each other under the action of the thread transmission force. The two pressure plates respectively carry two width limit plates to approach each other, so that the width limit plate drives the sensing block to move left, and the other width limit plate drives the width distance sensor to move right. When the sensed value is the same as the value set by the controller, the reduction motor will be turned off. In this way, the distance value between the two width limit plates can be accurately limited and adjusted according to the width value of the bridge connection seam. Then, the two sealing strips are sealed and squeezed at the positions on both sides of the upper surface of the bridge connection seam according to the specified pressure. Water permeability test can be realized for bridge connection seams of different widths, and the water permeability test is more widely applicable.

[0023] 2. The present invention uses a flip limit adjustment mechanism to link the output end of the electric cylinder to move downward along the inner wall of the sleeve block, and the hinge block drives the two hinge shafts to move downward synchronously, so that the hinge shaft drives the top of the sleeve shaft to move downward, and the distance between the two support shafts becomes larger. The rack drives the gear to rotate counterclockwise, and the other rack drives the other gear to rotate clockwise. The rubber jacket rotates and is squeezed on the two width limit plates, and the other rubber jacket is also squeezed and contacted with the two width limit plates. The limit seal is adjusted between the two rubber jackets, and then the two sealing supports are squeezed at the upper surface position of the bridge joint according to the specified pressure. The flip limit adjustment can be achieved by the two sealing supports for bridge joints of different widths, and the applicability of water permeability testing is wider.

[0024] 3. The present invention utilizes a positioning test assembly. First, the test water is poured into the test space surrounded by two sealing strips and two test water tanks through a delivery pipe. Then, the buoyancy sleeve is caused to carry the sensing sleeve upward by the buoyancy. The sensing sleeve and the buoyancy sleeve slide upward along the outer wall of the guide column. The distance between the water level distance sensor and the sensing sleeve is sensed by the water level distance sensor. The value change of the water level distance sensor is observed on the display screen on the controller. The water level positioning test can be performed on bridge joints of different widths, and the water permeability test has a wider applicability.

[0025] The above-mentioned multiple effects interact with each other. First, the distance value between the two width limit plates can be accurately limited and adjusted according to the width value of the bridge joint. Then, the rubber jacket is rotated and squeezed on the two width limit plates. The other rubber jacket is also squeezed and contacted with the two width limit plates. Finally, the buoyancy sleeve is caused to slide upward by the buoyancy of the sensing sleeve for positioning. After positioning, the distance between the water level distance sensor and the sensing sleeve is sensed by the water level distance sensor. In summary, the width of bridge joints of different widths can be accurately adjusted and limited by two width limit plates. The two rubber jackets can also be flipped and limited, and the sensing sleeve can be accurately positioned and detected, so that the applicability of water seepage testing is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0027] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0028] Figure 1 This is a schematic diagram of the main structure of the water permeability testing device for bridge joints of the present invention;

[0029] Figure 2 This is a schematic diagram of a partial structure of the connection between the sleeve block and the pressure plate of the present invention;

[0030] Figure 3 This is a schematic diagram of the rear view structure of the water permeability testing device for bridge joints of the present invention;

[0031] Figure 4 This is a schematic diagram of a partial structure of the connection between the support frame and the support plate of the present invention;

[0032] Figure 5 This is a schematic diagram of the partial structure of the connection between the test water tank and the threaded cover of the present invention;

[0033] Figure 6 This is a schematic diagram of the main structure of the flip limit adjustment mechanism of the present invention;

[0034] Figure 7 For the present invention Figure 6 A in the middle is an enlarged structural diagram;

[0035] Figure 8 This is a schematic diagram of the partial vertical cross-section of the connection between the sealing support strip and the turnover plate of the present invention;

[0036] Figure 9 This is a schematic diagram of the partial structure of the flip limit adjustment mechanism of the present invention when viewed from above;

[0037] Figure 10 This is a bottom-up structural diagram of the positioning test assembly of the present invention;

[0038] Figure: 1, moving frame; 2, lower pressure electric cylinder; 3, pressure sensor; 4, sleeve block; 5, support frame; 6, linkage screw; 7, reduction motor; 8, sleeve block; 9, pressure plate; 10, width limit plate; 11, sealing strip; 12, sensor block; 13, width distance sensor; 14, support block; 15, slide bar; 16, support plate; 17, test water tank; 18, suction pipe; 19, pump; 20, delivery pipe; 21, threaded cover; 22, battery; 23 , controller; 24, linkage electric cylinder; 25, hinge block; 26, hinge shaft; 27, sleeve shaft; 28, support shaft; 29, sleeve slider; 30, slide frame; 31, pillar; 32, rack; 33, gear; 34, rotating rod; 35, flip plate; 36, sealing support strip; 37, rubber jacket; 38, sleeve plate; 39, water level distance sensor; 40, guide column; 41, induction sleeve; 42, buoyancy sleeve; 43, limit ring; 44, support plate. DETAILED DESCRIPTION

[0039] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0040] As attached Figure 1 -10 shows a water permeability testing device for bridge joints. The water permeability testing device for bridge joints is provided with a width limit adjustment mechanism, a flip limit adjustment mechanism, and a positioning test component. The settings of each mechanism and component can achieve precise width adjustment and limit through two width limit plates 10 for bridge joints of different widths, and can also make the two rubber sleeves 37 flip limit adjustment, and the sensing sleeve block 41 accurately positioned to detect, so that the water permeability test has a wider applicability. The specific structural settings of each mechanism and component are as follows.

[0041] In this technical solution, as shown in the attached Figure 1 - Attachment Figure 3 As shown, the lower pressure electric cylinder 2 is fixedly mounted on one side of the mobile frame 1, the pressure sensor 3 is fixedly mounted on the output end of the lower pressure electric cylinder 2, and the bottom end of the pressure sensor 3 is installed with a width limit adjustment mechanism; the width limit adjustment mechanism includes a sleeve block 4 fixedly mounted on the bottom end of the pressure sensor 3, and the bottom end of the sleeve block 4 is fixedly connected to a support frame 5, and the internal rotation of the support frame 5 is connected to a linkage screw 6; a reduction motor 7 is fixedly mounted on one end of the support frame 5, and the output end of the reduction motor 7 is fixedly connected to the linkage screw 6, and the outer wall of the linkage screw 6 is threadedly connected to two sleeve blocks 8, and the bottom end of each sleeve block 8 is fixedly mounted with a pressure plate 9; the bottom end of each pressure plate 9 is fixedly mounted with a width limit plate 10, and the bottom end of each width limit plate 10 is bonded with a sealing strip 11; a flip limit adjustment mechanism is installed on one side of the lower pressure electric cylinder 2.

[0042] In this technical solution, as shown in the attached Figure 1 - Attachment Figure 2 As shown, a sensing block 12 is fixedly installed on one side of one width limiting plate 10, and a width distance sensor 13 is installed on one side of the sensing block 12; the width distance sensor 13 is fixedly connected to the other width limiting plate 10, so that the width limiting plate 10 drives the sensing block 12 to move left, and the other width limiting plate 10 drives the width distance sensor 13 to move right, and the distance between the width distance sensor 13 and the sensing block 12 is sensed by the width distance sensor 13. When the sensed value is the same as the value set by the controller 23, the reduction motor 7 is turned off by the controller 23. Support blocks 14 are installed on both sides of the sleeve block 4, and the two support blocks 14 are fixedly connected to the support frame 5. A sliding rod 15 is fixedly installed on the top of each support block 14; the two sliding rods 15 are slidably connected to the mobile frame 1, so that the sleeve block 4 drives the support frame 5 to move downward, and the support frame 5 simultaneously drives the two support blocks 14 to move downward synchronously, and the support block 14 drives the sliding rod 15 to move downward. The two sliding rods 15 can be guided downward along the inner wall of the mobile frame 1, and the support frame 5 can be stably moved downward.

[0043] In this technical solution, as shown in the attached Figure 2 - Attachment Figure 5As shown, a support plate 16 is fixedly installed on one side of the outer wall of the support frame 5, and a test water tank 17 for containing test water is fixedly installed on the bottom end of the support plate 16, and the test water tank 17 is slidably connected to the mobile frame 1, and a suction pipe 18 is fixedly connected to the inner wall of the test water tank 17, and a pump 19 is fixedly connected to the top of the suction pipe 18. The output end of the pump 19 is threadedly connected to the delivery pipe 20, and a threaded cover 21 threadedly connected to the test water tank 17 is installed on one side of the support plate 16, so that the support plate 16 can provide support for the test water tank 17. By rotating the threaded cover 21 forward, the threaded cover 21 and the test water tank 17 are separated, and then test water is added to the inside of the test water tank 17. The pump 19 generates suction in the suction pipe 18, and the suction pipe 18 sucks the test water into the delivery pipe 20, so that the test water can be transported for testing operations. A battery 22 is installed on one side of the mobile frame 1, and a controller 23 is installed on one side of the battery 22. The battery 22 is used to power the controller 23. The controller 23 and the mobile frame 1 are fixedly connected to the battery 22 so that the battery 22 can power the controller 23, and the reduction motor 7 is started through the controller 23 to realize the driving operation of the reduction motor 7.

[0044] In this technical solution, as shown in the attached Figure 3 - Attachment Figure 8 As shown, the flip limit adjustment mechanism includes a linkage electric cylinder 24 slidably mounted on one side of the lower pressure electric cylinder 2; the linkage electric cylinder 24 is fixedly connected to the sleeve block 4, and the output end of the linkage electric cylinder 24 is fixedly connected to a hinge block 25, and both sides of the inner wall of the hinge block 25 are fixedly connected to a hinge shaft 26, and the outer wall of each hinge shaft 26 is rotatably connected to a sleeve shaft 27; the inner wall of the sleeve shaft 27 is rotatably connected to a support shaft 28 away from the position of the hinge shaft 26, and a sleeve shaft 27 is fixedly mounted on one end of the support shaft 28. A connecting slider 29 is provided, and a sliding frame 30 is provided on the outer wall of the sleeve slider 29. The two sleeve sliders 29 are slidably connected to the sliding frame 30; a pillar 31 is fixedly installed on one side of the inner wall of the sliding frame 30, and the two sleeve sliders 29 are slidably connected to the pillar 31. A rack 32 is fixedly installed on one side of the sleeve slider 29, and a gear 33 is meshingly connected to one side of the sliding frame 30. The inner wall of the gear 33 is fixedly connected to a rotating rod 34, and the outer wall of the rotating rod 34 is rotatably connected to the sliding frame 30.

[0045] A flip plate 35 is fixedly mounted at the bottom of each rotating rod 34. A sealing strip 36 is bonded to the underside of the flip plate 35, and a rubber cover 37 is bonded to the outer wall of the flip plate 35. A positioning test assembly is mounted at the bottom of the sliding frame 30. The two hinge shafts 26 are symmetrically arranged about the hinge block 25. Both the sealing strip 36 and the rubber cover 37 are made of rubber.

[0046] In this technical solution, as shown in the attached Figure 9 - Attachment Figure 10As shown, the positioning test assembly includes a socket plate 38 fixedly mounted at the bottom end of the slide frame 30. A water level distance sensor 39 is fixedly mounted on the inner wall of the socket plate 38. A guide post 40 is fixedly mounted on the lower surface of the socket plate 38, and a sensing block 41 is slidably connected to the outer wall of the guide post 40. A buoyancy block 42 is fixedly connected to the lower surface of the sensing block 41. The lower surface of the buoyancy block 42 is provided with a retaining ring 43 fixedly connected to the guide post 40. The buoyancy block 42 and the outer wall of the guide post 40 are slidably connected. The retaining ring 43 is used to support the buoyancy block 42. Support plates 44 are fixedly connected to both sides of the slide frame 30. Both support plates 44 are fixedly connected to the support frame 5. The buoyancy block 42 and the retaining ring 43 are slidably connected. The outer wall of the guide post 40 and the inner walls of the sensing block 41 and the inner wall of the buoyancy block 42 are all smooth.

[0047] The use process of the water permeability testing device for bridge joints of the present invention is as follows:

[0048] Step 1. When the present invention performs width limit adjustment, the mobile frame 1 is first moved and moved to the bridge connection seam position. According to the distance between the bridge connection seams, the width limit value can be set on the controller 23. The reduction motor 7 is started by the controller 23, and the reduction motor 7 drives the linkage screw 6 to rotate. The linkage screw 6 rotates inside the support frame 5, so that the linkage screw 6 can drive the two socket blocks 8 to approach each other under the action of the thread transmission force. At the same time, the two socket blocks 8 respectively carry two pressure plates 9 to approach each other, and the two pressure plates 9 respectively carry two width limit plates 10 to approach each other. The two width limit plates 10 respectively carry two sealing strips 11 to approach each other, so that the width limit plate 10 drives the sensing block 12 to move left, and the other width limit plate 10 drives the width distance sensor 13 to move right. The distance between the width distance sensor 13 and the sensing block 12 is sensed by the width distance sensor 13. When the sensed value is the same as the value set by the controller 23, the reduction motor 7 is turned off by the controller 23. In this way, the distance between the two width limiting plates 10 can be precisely limited and adjusted according to the width of the bridge joint.

[0049] Step 2: When the present invention performs the flip limit adjustment, the controller 23 activates the linkage electric cylinder 24, and the output end of the linkage electric cylinder 24 moves downward along the inner wall of the sleeve block 4. At the same time, the output end of the linkage electric cylinder 24 drives the hinge block 25 to move downward, and the hinge block 25 drives the two hinge shafts 26 to move downward synchronously, so that the hinge shaft 26 drives the top of the sleeve shaft 27 to move downward, and the bottom of the sleeve shaft 27 drives the support shaft 28 to move horizontally. In this way, the distance between the two support shafts 28 increases, and the two support shafts 28 respectively drive the distance between the two sleeve slides 29 to increase. The two sleeve slides 29 slide along the outer wall of the support 31, and the two sleeve slides 29 slide along the inner wall of the slide frame 30.

[0050] Then, the two sleeve sliders 29 drive the distance between the two racks 32 to increase, and the racks 32 drive the gear 33 to mesh and rotate counterclockwise, while the other rack 32 drives the other gear 33 to mesh and rotate clockwise. This causes the gear 33 to rotate the rotating rod 34 counterclockwise, which in turn drives the flip plate 35 counterclockwise. The flip plate 35 also drives the sealing support 36 counterclockwise. The flip plate 35 also drives the rubber cover 37 counterclockwise. This causes the rubber cover 37 to rotate and squeeze against the two width limiting plates 10, thereby causing the rubber cover 37 to come into contact with the two width limiting plates 10, forming an extrusion seal. The other rubber cover 37 also comes into contact with the two width limiting plates 10, forming an extrusion seal. The two rubber covers 37 are adjusted to limit the position, and a limit seal can be achieved between the two rubber covers 37.

[0051] Step 3. When the present invention performs fixed force sealing, the upper surface of the bridge joint is first cleaned to ensure that there are no impurities on the upper surface of the bridge joint. Then, the piezoelectric cylinder 2 is supported by the mobile frame 1, and the controller 23 starts the piezoelectric cylinder 2. The piezoelectric cylinder 2 pushes the pressure sensor 3 downward, and the pressure sensor 3 drives the sleeve block 4 downward, and the sleeve block 4 drives the support frame 5 downward. The support frame 5 simultaneously drives the two support blocks 14 to move downward synchronously, and the support block 14 drives the slide bar 15 downward. The two slide bars 15 can be guided downward along the inner wall of the mobile frame 1, so that the support frame 5 can drive the linkage screw 6 to move downward stably, the linkage screw 6 drives the two sleeve blocks 8 to move downward stably, the sleeve block 8 drives the pressure plate 9 to move downward, the pressure plate 9 drives the width limit plate 10 to move downward, and the width limit plate 10 drives the sealing strip 11 to move downward. The two sealing strips 11 are squeezed at the positions on both sides of the upper surface of the bridge joint.

[0052] Simultaneously, the support frame 5 drives the two support plates 44 downward, which in turn drives the slide frame 30 downward. The slide frame 30 drives the two rotating rods 34 downward, which in turn drive the flip plate 35 downward in a synchronous manner. The flip plate 35 then drives the sealing strips 36 downward, and the two sealing strips 36 are pressed against the upper surface of the bridge joint at a specified pressure. Pressure sensing is achieved via the pressure sensor 3. When the pressure value sensed by the pressure sensor 3 matches the pressure value set by the controller 23, the controller 23 closes the lower pressure cylinder 2. This allows the two sealing strips 11 and the two sealing strips 36 to be pressed against the bridge joint at the specified pressure, achieving a precise seal.

[0053] Step 4: When performing a positioning test, the present invention rotates the threaded cap 21 forward to separate the threads between the threaded cap 21 and the test water tank 17. Test water is then added to the test water tank 17. Once filled, the threaded cap 21 is rotated in the reverse direction to engage and seal the test water tank 17. After sealing, the pump 19 is started, which creates suction in the suction pipe 18. The suction pipe 18 draws the test water into the delivery pipe 20, which then pours the test water into the test space enclosed by the two sealing strips 11 and the two test water tanks 17.

[0054] Under the influence of the buoyancy of the water, the buoyancy block 42 moves upward. This buoyancy causes the sensing block 41 to slide upward, and the limiting ring 43 provides a limiting support for the buoyancy block 42. The sensing block 41 and the buoyancy block 42 slide upward along the outer wall of the guide column 40, and the sensing block 41 approaches the water level distance sensor 39. The support frame 5 supports the socket plate 38, which in turn supports the water level distance sensor 39. The water level distance sensor 39 senses the distance between the water level distance sensor 39 and the sensing block 41. When the value sensed by the water level distance sensor 39 matches the value set by the controller 23, the controller 23 shuts off the pump 19, stopping water injection. At the same time, the controller 23 records the value sensed by the water level distance sensor 39 at this time, and observes the change in the value sensed by the water level distance sensor 39 on the display screen of the controller 23. If the change value exceeds the value specified on the controller 23, the water permeability of the bridge connection joint is unqualified and needs to be reworked and repaired. If the change value is within the value range specified on the controller 23, the water permeability of the bridge connection joint is qualified. In this way, the water permeability test operation can be realized according to bridge connection joints of different widths, and the test has a wider range of applicability.

[0055] The contents not described in detail in the specification belong to the existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the existing technology and are not described here.

[0056] While the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made to the present invention. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of the present invention.

Claims

1. A water permeability testing device for bridge joints, comprising a movable frame, a lower pressure electric cylinder, and a pressure sensor, wherein the lower pressure electric cylinder is fixedly mounted on one side of the movable frame, and the pressure sensor is fixedly mounted on the output end of the lower pressure electric cylinder, characterized in that: A width limit adjustment mechanism is installed at the bottom end of the pressure sensor; The width limit adjustment mechanism includes a sleeve block fixedly mounted on the bottom end of the pressure sensor, and the bottom end of the sleeve block is fixedly connected to a support frame, and the internal rotation of the support frame is connected to a linkage screw; a reduction motor is fixedly mounted on one end of the support frame, and the output end of the reduction motor is fixedly connected to the linkage screw, and the outer wall of the linkage screw is threadedly connected to two sleeve blocks, and the bottom end of each sleeve block is fixedly mounted with a pressure plate; the bottom end of each pressure plate is fixedly mounted with a width limit plate, and the bottom end of each width limit plate is bonded with a sealing strip; a flip limit adjustment mechanism is installed on one side of the lower pressure electric cylinder, and the flip limit adjustment mechanism includes a linkage electric cylinder slidably mounted on one side of the lower pressure electric cylinder; the linkage electric cylinder and the sleeve block are fixedly connected, and the output end of the linkage electric cylinder is fixedly connected with a hinge block, and the hinge Both sides of the inner wall of the connecting block are fixedly connected with a hinge shaft, and the outer wall of each hinge shaft is rotatably connected with a sleeve shaft; the inner wall of the sleeve shaft is rotatably connected with a support shaft away from the hinge shaft, and a sleeve slider is fixedly installed at one end of the support shaft, and a slide frame is provided on the outer wall of the sleeve slider, and the two sleeve sliders are slidably connected to the slide frame; a pillar is fixedly installed on one side of the inner wall of the slide frame, and the two sleeve sliders are slidably connected to the pillar, a rack is fixedly installed on one side of the sleeve slider, and a gear is meshed and transmitted on one side of the slide frame, the inner wall of the gear is fixedly connected with a rotating rod, and the outer wall of the rotating rod is rotatably connected to the slide frame; a flip plate is fixedly installed on the bottom end of each rotating rod, a sealing support strip is bonded to the lower surface of the flip plate, and a rubber jacket is bonded to the outer wall of the flip plate.

2. The water permeability testing device for bridge joints according to claim 1, characterized in that: The two sleeve blocks are both slidably connected to the support frame, and the two threads on the outer wall of the linkage screw are opposite and symmetrically arranged; The inner wall of the support frame and the outer walls of the two sleeve blocks are both smooth surfaces.

3. The water permeability testing device for bridge joints according to claim 2, characterized in that: The cross sections of the two sealing strips are both rectangular, and the two sealing strips are both made of rubber.

4. The water permeability testing device for bridge joints according to claim 3, characterized in that: A sensing block is fixedly mounted on one side of one of the width limiting plates, and a width distance sensor is mounted on one side of the sensing block; The width distance sensor is fixedly connected to another width limiting plate; Support blocks are installed on both sides of the sleeve block, and the two support blocks are fixedly connected to the support frame. A sliding rod is fixedly installed on the top of each support block; The two sliding rods are both slidably connected to the movable frame.

5. The water permeability testing device for bridge joints according to claim 4, characterized in that: A support plate is fixedly installed on one side of the outer wall of the support frame, and a test water tank for containing test water is fixedly installed on the bottom end of the support plate, and the test water tank is slidably connected to the mobile frame, a suction pipe is fixedly connected to the inner wall of the test water tank, the top end of the suction pipe is fixedly connected to a pump, and the output end of the pump is threadedly connected to a delivery pipe, and a threaded cover threadedly connected to the test water tank is installed on one side of the support plate; A battery is installed on one side of the mobile frame, a controller is installed on one side of the battery, and the battery is used to supply power to the controller. The controller and the mobile frame are both fixedly connected to the battery.

6. The water permeability testing device for bridge joints according to claim 5, characterized in that: A positioning test component is installed at the bottom end of the sliding frame.

7. The water permeability testing device for bridge joints according to claim 6, characterized in that: The two hinge shafts are symmetrically arranged about the hinge block, and the sealing strip and the rubber jacket are both made of rubber material.

8. The water permeability testing device for bridge joints according to claim 7, characterized in that: The positioning test assembly includes a socket plate fixedly mounted on the bottom end of the slide frame; A water level distance sensor is fixedly mounted on the inner wall of the sleeve plate, a guide column is fixedly mounted on the lower surface of the sleeve plate, and a sensing sleeve block is slidably connected to the outer wall of the guide column; The lower surface of the induction sleeve is fixedly connected to the buoyancy sleeve, and the lower surface of the buoyancy sleeve is provided with a limiting ring fixedly connected to the guide column, and the buoyancy sleeve is slidably connected to the outer wall of the guide column. The limiting ring is used to support the buoyancy sleeve, and support plates are fixedly connected on both sides of the sliding frame, and the two support plates are fixedly connected to the support frame.

9. The water permeability testing device for bridge joints according to claim 8, characterized in that: The buoyancy sleeve is slidably connected to the limiting ring, and the outer wall of the guide column, the inner wall of the induction sleeve and the inner wall of the buoyancy sleeve are all set as smooth surfaces.

10. A method for testing water permeability of bridge joints, using the water permeability testing device for bridge joints according to claim 9, characterized in that: The method comprises the following steps: Step 1: Width limit adjustment: two width limit plates are used to move two sealing strips closer to each other. When the sensed value is the same as the value set by the controller, the controller turns off the reduction motor. Step 2: Flip limit adjustment. Use the controller to start the linkage electric cylinder. The two sleeve sliders drive the distance between the two racks to increase. The rubber cover is squeezed and contacted with the two width limit plates. The other rubber cover is also squeezed and contacted with the two width limit plates. Step 3: Constant force sealing: Press the electric cylinder downward to push the pressure sensor downward, and the two sealing strips are squeezed on both sides of the upper surface of the bridge joint. The two sealing strips and two sealing support strips are squeezed on the bridge joint according to the specified pressure; Step 4: Positioning test: Pour test water into the test space surrounded by two sealing strips and two sealing supports through the delivery pipe. Use the water level distance sensor to sense the distance between the water level distance sensor and the sensing block. The controller records the value sensed by the water level distance sensor at this time and observes the water level changes. In this way, the water permeability test operation can be realized according to the different widths of the bridge connection seams.

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