Water permeability testing device and method for bridge connecting seam

Abstract

The invention discloses a water permeability testing device and method for a bridge connecting seam, and belongs to the technical field of water permeability testing. The water permeability testing device comprises a moving frame, a lower piezoelectric cylinder, a pressure sensor and a width limiting adjusting mechanism; wherein the width limiting and adjusting mechanism comprises a sleeve block, a support frame, a linkage screw rod, a gear motor, two sleeve blocks, a pressing plate, a width limiting plate and a sealing strip; wherein one side of the lower piezoelectric cylinder is provided with an overturning limiting adjusting mechanism. The distance value between the two width limiting plates is adjusted through the width limiting adjusting mechanism, so that the width limiting plates are extruded on the two sides of the upper surface of the bridge connecting seam in a sealed mode, water permeability testing can be achieved for the bridge connecting seams with different widths, and the water permeability testing has the advantage of being wider in applicability; therefore, the problems that the water permeability test is difficult to realize aiming at the bridge connecting seams with different widths and the applicability of the water permeability test is poor are solved.

Description

Technical Field

[0001] The 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 the weak link in the bridge structure and are easily affected by external environmental factors, leading to water seepage. By regularly using bridge joint water seepage test devices for testing, potential water seepage problems can be discovered and dealt with in a timely manner, thereby preventing damage to the bridge structure and safety accidents caused by water seepage.

[0003] In the existing published technical documents, the utility model patent with Chinese patent publication number CN220207380U discloses a bridge joint water permeability test device, which is mainly in contact with the tested surface through a sealing sleeve, and the sealing sleeve is pressed against the tested surface by the weight of the counterweight block and the test device as a whole, so as to prevent the water outlet from directly pressing on the tested surface, which may cause inaccurate or even failed testing due to water leakage. However, the device still has the following defects when performing water permeability testing.

[0004] During the water permeability test of bridge joints, the bridge joints need to be sealed and limited first, and then water is poured in 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 water permeability testing device and method for 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 joints, comprising a movable frame, a lower piezoelectric cylinder and a pressure sensor, wherein the lower piezoelectric cylinder is fixedly mounted on one side of the movable frame, the pressure sensor is fixedly mounted on the output end of the lower piezoelectric cylinder, and a width limit adjustment mechanism is installed at the bottom end of the pressure sensor; the width limit adjustment mechanism comprises 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 a linkage screw is rotatably connected inside the support frame; 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 a pressure plate is fixedly mounted on the bottom end of each sleeve block; a width limit plate is fixedly mounted on the bottom end of each pressure plate, and a sealing strip is bonded to the bottom end of each width limit plate; a flip limit adjustment mechanism is installed on one side of the lower piezoelectric 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 rectangular, and the two sealing strips are made of rubber material. 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 block, 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 mobile frame, a suction pipe is fixedly connected to the inner wall of the test water tank, the top of the suction pipe is fixedly connected to a pump, 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 power the controller, and the controller and the mobile frame are fixedly connected to the battery.

[0009] In this technical solution, the reduction motor drives the linkage screw to rotate, and the linkage screw can drive the two socket blocks to move closer to each other under the action of the thread transmission force. At the same time, the two socket blocks carry two pressure plates to move closer to each other, and the two width limit plates carry two sealing strips to move closer to 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. The distance between the width distance sensor and the sensing block is sensed by the width distance sensor. When the sensed value is the same as 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 lower 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 a hinge block, and both sides of the inner wall of the hinge block are fixedly connected to hinge shafts, and the outer wall of each hinge shaft is rotatably connected to a 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 a sliding frame is provided on the outer wall of the sleeve slider, and the two sleeve sliders are slidably connected to the slide frame.

[0011] A pillar is fixedly installed on one side of the inner wall of the sliding frame, and the two sleeve sliding blocks are slidably connected to the pillars. A rack is fixedly installed on one side of the sleeve sliding block, 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 installed on the bottom end of each rotating rod, a sealing 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; a positioning test assembly is installed at the bottom end of the sliding frame. 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.

[0012] In this technical solution, the output end of the linkage electric cylinder moves down along the inner wall of the sleeve block. The hinge block drives the two hinge shafts to move down synchronously, so that the hinge shaft drives the top of the sleeve shaft to move down, 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 rotate counterclockwise, and the other rack drives the other gear to rotate clockwise. The rotating rod drives the flip plate to rotate counterclockwise, and the flip plate drives the rubber jacket to rotate counterclockwise at the same time, so that the rubber jacket is squeezed and contacted with the two width limit plates to form an extrusion sealing operation. The other rubber jacket is also squeezed and contacted with the two width limit plates.

[0013] Preferably, the positioning test assembly comprises 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 a sensing sleeve block is slidably connected to the outer wall of the guide column; a buoyancy sleeve block is fixedly connected to the lower surface of the sensing sleeve block, and a limiting ring fixedly connected to the guide column is provided on the lower surface of the buoyancy sleeve block, and the buoyancy sleeve block is slidably connected to the outer wall of the guide column, and the limiting ring is used to support the buoyancy sleeve block, support plates are fixedly connected to both sides of the sliding frame, and the two support plates are fixedly connected to the support frame, and the buoyancy sleeve block is slidably connected to the limiting ring, and the outer wall of the guide column and the inner wall of the sensing sleeve block and the inner wall of the buoyancy sleeve block are all set to smooth surfaces.

[0015] In the technical solution, the buoyancy sleeve moves upward under the action of water buoyancy, and the buoyancy sleeve carries the sensing sleeve upward under the buoyancy, and 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 value exceeds the value specified on the controller, the water permeability of the bridge joint is unqualified. If the change value 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 a bridge joint, the method comprising the following steps:

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

[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 jacket is squeezed and contacted with the two width limit plates. The other rubber jacket is also squeezed and contacted with the two width limit plates.

[0019] Step 3: Constant force sealing: the downward pressure electric cylinder pushes 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 the 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, and 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, so that the 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, 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 extruded on the two width limit plates, and the other rubber jacket is also extruded 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 extruded at the upper surface position of the bridge joint according to the specified pressure. For bridge joints of different widths, flip limit adjustment can be achieved through two sealing supports, and the applicability of water permeability testing is wider.

[0024] 3. The present invention utilizes a positioning test component. 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 is more widely applicable.

[0025] The above-mentioned multiple effects influence 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 carried by the buoyancy to slide the sensing sleeve upward for positioning. After positioning, the water level distance sensor is used to sense the distance between the water level distance sensor and the sensing sleeve. In summary, for bridge joints of different widths, the width 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 water seepage test is more widely applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0027] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

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

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

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

[0031] Figure 4 It 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 front view structure of the flip limit adjustment mechanism of the present invention;

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

[0035] Figure 8 It is a schematic diagram of the local structure of the vertical section of the connection between the sealing support strip and the flip plate of the present invention;

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

[0037] Fig.10 This is a bottom view structural diagram of the positioning test assembly of the present invention;

[0038] In the figure: 1, mobile 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, induction 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 block; 42, buoyancy sleeve block; 43, limit ring; 44, support plate. DETAILED DESCRIPTION

[0039] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] As attached Figure 1 -10 shows a water permeability testing device for bridge joints, which 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 realize precise width adjustment and limit through two width limit plates 10 for bridge joints of different widths, and can also make the two rubber jackets 37 flip limit adjustment, and the sensing sleeve block 41 can be accurately positioned to detect, so that the water permeability test is more widely applicable. 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 piezoelectric cylinder 2 is fixedly installed on one side of the mobile frame 1, the pressure sensor 3 is fixedly installed on the output end of the lower piezoelectric cylinder 2, and a width limit adjustment mechanism is installed at the bottom end of the pressure sensor 3; the width limit adjustment mechanism includes a sleeve block 4 fixedly installed at 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 installed at 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 a pressure plate 9 is fixedly installed at the bottom end of each sleeve block 8; a width limit plate 10 is fixedly installed at the bottom end of each pressure plate 9, and a sealing strip 11 is bonded to the bottom end of each width limit plate 10; a flip limit adjustment mechanism is installed on one side of the lower piezoelectric 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 drives the two support blocks 14 to move downward synchronously at the same time, 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, and the output end of the pump 19 is threadedly connected to a 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 force for the test water tank 17, and the threaded cover 21 is threadedly separated from the test water tank 17 by rotating the threaded cover 21 forward, and then the test water is added to the inside of the test water tank 17, and the pump 19 causes the suction pipe 18 to generate suction, 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 overturn 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 hinge shafts 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 hinge shaft 26, and a sleeve shaft 27 is fixedly installed at one end of the support shaft 28. A connecting slider 29 is provided on the outer wall of the sleeve slider 29, and a sliding frame 30 is provided, and the two sleeve sliders 29 are both 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 both 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, a rotating rod 34 is fixedly connected to the inner wall of the gear 33, 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 end of each rotating rod 34, a sealing strip 36 is bonded to the lower surface 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 end of the sliding frame 30. The two hinge shafts 26 are symmetrically arranged about the hinge block 25, and the sealing strip 36 and the rubber cover 37 are both made of rubber material.

[0046] In this technical solution, as shown in the attached Fig. 9 - Attachment Fig.10As shown, the positioning test assembly includes a socket plate 38 fixedly mounted on 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 column 40 is fixedly mounted on the lower surface of the socket plate 38, and a sensing sleeve 41 is slidably connected to the outer wall of the guide column 40. A buoyancy sleeve 42 is fixedly connected to the lower surface of the sensing sleeve 41, and a limit ring 43 fixedly connected to the guide column 40 is provided on the lower surface of the buoyancy sleeve 42, and the buoyancy sleeve 42 is slidably connected to the outer wall of the guide column 40, and the limit ring 43 is used to support the buoyancy sleeve 42, and support plates 44 are fixedly connected to both sides of the slide frame 30, and the two support plates 44 are fixedly connected to the support frame 5. The buoyancy sleeve 42 is slidably connected to the limit ring 43, and the outer wall of the guide column 40, the inner wall of the sensing sleeve 41, and the inner wall of the buoyancy sleeve 42 are all set as smooth surfaces.

[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 the mobile frame 1 is moved to the bridge joint position. According to the distance between the bridge joints, 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, and the linkage screw 6 rotates inside the support frame 5, so that the linkage screw 6 can drive the two sleeve blocks 8 to approach each other under the action of the thread transmission force. At the same time, the two sleeve 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, and 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 value between the two width limiting plates 10 can be accurately limited and adjusted according to the width value of the bridge joint.

[0049] Step 2: When the present invention performs the overturn limit adjustment, the controller 23 starts the linkage electric cylinder 24, and the output end of the linkage electric cylinder 24 moves down 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 down, and the hinge block 25 drives the two hinge shafts 26 to move down synchronously, so that the hinge shaft 26 drives the top of the sleeve shaft 27 to move down, and the bottom of the sleeve shaft 27 drives the support shaft 28 to move horizontally, so that the distance between the two support shafts 28 becomes larger, and the two support shafts 28 respectively drive the distance between the two sleeve sliders 29 to become larger, and the two sleeve sliders 29 slide along the outer wall of the pillar 31, and the two sleeve sliders 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 rack 32 drives the gear 33 to rotate counterclockwise, while the other rack 32 drives the other gear 33 to rotate clockwise. The gear 33 drives the rotating rod 34 to rotate counterclockwise, the rotating rod 34 drives the flip plate 35 to rotate counterclockwise, the flip plate 35 drives the sealing support 36 to rotate counterclockwise, and the flip plate 35 drives the rubber jacket 37 to rotate counterclockwise at the same time, so that the rubber jacket 37 rotates and squeezes on the two width limiting plates 10, so that the rubber jacket 37 is squeezed and contacted with the two width limiting plates 10 to form an extrusion sealing operation. The other rubber jacket 37 is also squeezed and contacted with the two width limiting plates 10 to form an extrusion sealing operation, and the two rubber jackets 37 are limited and adjusted, and the two rubber jackets 37 can achieve a limited sealing operation.

[0051] Step 3, when the present invention performs constant force sealing, first clean the upper surface of the bridge joint to ensure that there are no impurities on the upper surface of the bridge joint, and then support the lower piezoelectric cylinder 2 through the mobile frame 1, the controller 23 starts the lower piezoelectric cylinder 2, the lower piezoelectric cylinder 2 pushes the pressure sensor 3 to move downward, the pressure sensor 3 drives the sleeve block 4 to move downward, the sleeve block 4 drives the support frame 5 to move downward, the support frame 5 drives the two support blocks 14 to move downward synchronously at the same time, and the support block 14 drives the slide bar 15 to move 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] At the same time, the support frame 5 drives the two support plates 44 to move downward, the support plate 44 drives the slide frame 30 to move downward, the slide frame 30 drives the two rotating rods 34 to move downward, and the rotating rod 34 drives the flip plate 35 to move downward synchronously. Then the flip plate 35 drives the sealing support strip 36 to move downward, and the two sealing support strips 36 are squeezed at the upper surface position of the bridge joint according to the specified pressure. Pressure sensing is achieved through the pressure sensor 3. When the pressure value sensed by the pressure sensor 3 is the same as the pressure value set by the controller 23, the lower pressure cylinder 2 is closed through the controller 23. In this way, the two sealing strips 11 and the two sealing support strips 36 can be squeezed on the bridge joint according to the specified pressure, and a precise sealing operation is achieved.

[0053] Step 4: When the present invention performs a positioning test, the threaded cover 21 is rotated forwardly, the threaded cover 21 and the test water tank 17 are separated, and then the test water is added to the test water tank 17. After the test water tank 17 is filled, the threaded cover 21 is rotated in the reverse direction, and the threaded cover 21 is engaged and sealed to the test water tank 17. After the sealing is completed, the pump 19 is started, and the pump 19 generates suction in the suction pipe 18, and the suction pipe 18 sucks the test water into the delivery pipe 20, and the test water is poured into the test space surrounded by the two sealing strips 11 and the two test water tanks 17 through the delivery pipe 20.

[0054] Under the action of water buoyancy, the buoyancy sleeve 42 moves upward, and the buoyancy sleeve 42 carries the sensing sleeve 41 upward under the buoyancy, and the limiting ring 43 can limit and support the buoyancy sleeve 42. The sensing sleeve 41 and the buoyancy sleeve 42 slide upward along the outer wall of the guide column 40, and the sensing sleeve 41 approaches the water level distance sensor 39, and the sleeve plate 38 is supported by the support frame 5. The sleeve plate 38 supports the water level distance sensor 39, and the distance between the water level distance sensor 39 and the sensing sleeve 41 is sensed by the water level distance sensor 39. When the value sensed by the water level distance sensor 39 is the same as the value set by the controller 23, the pump 19 is turned off by the controller 23 to stop 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 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 joint is qualified. In this way, the water permeability test operation can be implemented according to bridge joints of different widths, and the test has a wider range of application.

[0055] The contents not described in detail in the specification belong to the prior art 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 prior art and will not be described here.

[0056] The present invention has been described in detail above by general description and specific embodiments, but it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A water permeability testing device for bridge joints, comprising a mobile frame (1), a lower piezoelectric cylinder (2) and a pressure sensor (3), wherein the lower piezoelectric cylinder (2) is fixedly mounted on one side of the mobile frame (1), and the pressure sensor (3) is fixedly mounted on the output end of the lower piezoelectric cylinder (2), characterized in that: A width limit adjustment mechanism is installed at the bottom end of the pressure sensor (3); The width limit adjustment mechanism comprises 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 interior of the support frame (5) is rotatably connected to a linkage screw rod (6); A reduction motor (7) is fixedly mounted on one end of the support frame (5); the output end of the reduction motor (7) is fixedly connected to the linkage screw (6); the outer wall of the linkage screw (6) is threadedly connected to two sleeve blocks (8); and a pressure plate (9) is fixedly mounted on the bottom end of each sleeve block (8); A width limiting plate (10) is fixedly mounted on the bottom end of each of the pressing plates (9), and a sealing strip (11) is bonded to the bottom end of each of the width limiting plates (10); A turning limit adjustment mechanism is installed on one side of the downward pressure electric cylinder (2).

2. The water permeability testing device for bridge joints according to claim 1, characterized in that: The two sleeve blocks (8) are both slidably connected to the support frame (5), and the two threads on the outer wall of the linkage screw rod (6) are opposite and symmetrically arranged; The inner wall of the support frame (5) and the outer walls of the two sleeve blocks (8) 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 (11) are both rectangular, and the two sealing strips (11) are both made of rubber material.

4. The water permeability testing device for bridge joints according to claim 3, characterized in that: A sensing block (12) is fixedly mounted on one side of one of the width limiting plates (10), and a width distance sensor (13) is mounted on one side of the sensing block (12); The width distance sensor (13) is fixedly connected to another width limiting plate (10); Support blocks (14) are installed on both sides of the sleeve block (4), the two support blocks (14) are fixedly connected to the support frame (5), and a sliding rod (15) is fixedly installed on the top of each support block (14); The two sliding rods (15) are both slidably connected to the moving frame (1).

5. The water permeability testing device for bridge joints according to claim 4, characterized in that: A support plate (16) is fixedly mounted on one side of the outer wall of the support frame (5), and a test water tank (17) for containing test water is fixedly mounted on the bottom end of the support plate (16), and the test water tank (17) is slidably connected to the mobile frame (1), a suction pipe (18) is fixedly connected to the inner wall of the test water tank (17), a pump (19) is fixedly connected to the top end of the suction pipe (18), and a delivery pipe (20) is threadedly connected to the output end of the pump (19), and a threaded cover (21) threadedly connected to the test water tank (17) is mounted on one side of the support plate (16); A storage battery (22) is installed on one side of the mobile frame (1), a controller (23) is installed on one side of the storage battery (22), and the storage battery (22) is used to supply power to the controller (23), and the controller (23) and the mobile frame (1) are both fixedly connected to the storage battery (22).

6. The water permeability testing device for bridge joints according to claim 5, characterized in that: The overturning limit adjustment mechanism comprises 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); the output end of the linkage electric cylinder (24) is fixedly connected to a hinge block (25); both sides of the inner wall of the hinge block (25) are fixedly connected to hinge shafts (26); and the outer wall of each hinge shaft (26) is rotatably connected to a sleeve shaft (27); A support shaft (28) is rotatably connected to the inner wall of the sleeve shaft (27) and at a position away from the hinge shaft (26); a sleeve slider (29) is fixedly installed on one end of the support shaft (28); a slide frame (30) is provided on the outer wall of the sleeve slider (29); and both of the sleeve sliders (29) are slidably connected to the slide frame (30); A support column (31) is fixedly mounted on one side of the inner wall of the slide frame (30), and the two sleeve sliding blocks (29) are both slidably connected to the support column (31). A rack (32) is fixedly mounted on one side of the sleeve sliding block (29), and a gear (33) is meshingly connected to one side of the slide frame (30). A rotating rod (34) is fixedly connected to the inner wall of the gear (33), and the outer wall of the rotating rod (34) is rotatably connected to the slide frame (30); A flip plate (35) is fixedly mounted on the bottom end of each rotating rod (34), a sealing strip (36) is bonded to the lower surface of the flip plate (35), and a rubber jacket (37) is bonded to the outer wall of the flip plate (35); A positioning test component is installed at the bottom end of the sliding frame (30).

7. The water permeability testing device for bridge joints according to claim 6, characterized in that: The two hinge shafts (26) are symmetrically arranged about the hinge block (25), and the sealing strip (36) and the rubber jacket (37) 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 comprises a socket plate (38) fixedly mounted on the bottom end of the slide frame (30); A water level distance sensor (39) is fixedly mounted on the inner wall of the sleeve plate (38), a guide column (40) is fixedly mounted on the lower surface of the sleeve plate (38), and a sensing sleeve block (41) is slidably connected to the outer wall of the guide column (40); The lower surface of the induction sleeve (41) is fixedly connected to a buoyancy sleeve (42), and the lower surface of the buoyancy sleeve (42) is provided with a limiting ring (43) fixedly connected to the guide column (40), and the buoyancy sleeve (42) is slidably connected to the outer wall of the guide column (40), and the limiting ring (43) is used to support the buoyancy sleeve (42), and support plates (44) are fixedly connected to both sides of the sliding frame (30), and the two support plates (44) are fixedly connected to the support frame (5).

9. The water permeability testing device for bridge joints according to claim 8, characterized in that: The buoyancy sleeve (42) is slidably connected to the limiting ring (43), and the outer wall of the guide column (40), the inner wall of the sensing sleeve (41) and the inner wall of the buoyancy sleeve (42) 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 (10) respectively carry two sealing strips (11) close to each other, and 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); Step 2: Flip limit adjustment: the controller (23) is used to start the linkage electric cylinder (24), and the two sleeve slide blocks (29) respectively drive the distance between the two racks (32) to increase, and the rubber jacket (37) is pressed and contacted with the two width limit plates (10), and the other rubber jacket (37) is also pressed and contacted with the two width limit plates (10); Step 3: constant force sealing, the downward pressure electric cylinder (2) pushes the pressure sensor (3) downward, and the two sealing strips (11) are pressed on both sides of the upper surface of the bridge joint, and the two sealing strips (11) and the two sealing support strips (36) are pressed on the bridge joint according to the specified pressure; Step 4: Positioning test: Test water is poured into the test space surrounded by two sealing strips (11) and two test water tanks (17) through the delivery pipe (20). The distance between the water level distance sensor (39) and the sensing sleeve (41) is sensed by the water level distance sensor (39). The controller (23) records the value sensed by the water level distance sensor (39) at this time and observes the water level change. In this way, the water permeability test operation is realized according to the bridge joints of different widths.

Images