Bridge water seepage multi-point detection system based on multi-faceted sealed cavity structure

Abstract

The application relates to the technical field of water seepage detection, and discloses a bridge water seepage multi-point detection system based on a multi-surface sealed cavity structure, which comprises a base, a ball groove is formed in the upper surface of the base, and a sealing piece is arranged on the base through a receiving groove formed in the lower surface of the base; a communication pipe, the bottom end of the communication pipe is designed in a spherical shape which is matched with the inner wall surface of the ball groove, the lower part of the inner wall of the communication pipe is designed in a flared shape, and a supporting frame is fixedly connected to the upper surface of the communication pipe; and a measuring cylinder. The bridge water seepage multi-point detection system based on the multi-surface sealed cavity structure can effectively solve the problem that, in the prior art, the base and the measuring cylinder of a detection device are rigidly connected, when the detection scene is an inclined surface on a bridge, the base is placed in close contact with the slope, the measuring cylinder is inclined along with the slope, the liquid level in the measuring cylinder is distorted, the error of the degree is more significant when the inclination angle is larger, and the problem that the detection precision requirement is not met.

Description

Technical Field

[0001] This invention relates to the field of water seepage detection technology, specifically to a multi-point water seepage detection system for bridges based on a multi-faceted sealed cavity structure. Background Technology

[0002] With the high-quality development of transportation infrastructure construction, the material system of concrete bridges is constantly being upgraded. New high-strength and high-density materials such as steel fiber reinforced concrete and modified polymer concrete are widely used in key structural parts of bridge deck pavement, box girders, and piers. These new materials significantly extend the service life of bridges due to their excellent mechanical properties and durability. However, the water seepage performance of bridges is an important indicator of bridge stability, so water seepage testing is necessary.

[0003] In the existing technology, the base of the testing equipment and the measuring cylinder are rigidly connected. When the testing scenario is an inclined surface on a bridge, the base is placed against the slope, and the measuring cylinder will tilt with the slope, resulting in distorted liquid level readings. Moreover, the larger the tilt angle, the more significant the error in the degree, which does not meet the requirements of testing accuracy. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a multi-point bridge seepage detection system based on a multi-faceted sealed cavity structure. This system effectively solves the problem in existing technologies where the base of the detection equipment and the measuring cylinder are rigidly connected. When the detection scenario is an inclined surface on a bridge, the base is placed against the slope, causing the measuring cylinder to tilt with the slope, resulting in distorted liquid level readings. Furthermore, the larger the tilt angle, the more significant the error in the reading, which does not meet the requirements for detection accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a multi-point detection system for bridge seepage based on a multi-faceted sealed cavity structure, comprising:

[0007] The base has a ball groove on its upper surface and a sealing element provided by a storage groove on its lower surface.

[0008] The connecting pipe has a spherical design at its bottom end that fits into the inner wall surface of the ball groove, an flared design at the lower part of the inner wall of the connecting pipe, and a support frame fixedly connected to the upper surface of the connecting pipe.

[0009] A measuring cylinder, the bottom end of which is detachably connected to the inner wall surface of the support frame, and the outer circumferential surface of the measuring cylinder is provided with scale lines;

[0010] The support unit includes a bearing plate rotatably connected to the outer circumference of the connecting pipe. The bearing plate is internally damped and rotatably connected to a bearing rod. Two bearing rods are symmetrically arranged around the measuring cylinder. The outer ends of the bearing rods penetrate the bearing plate and are fixedly connected to a support leg. The outer surface of the connecting pipe is provided with a vertical member for keeping the measuring cylinder vertical.

[0011] Furthermore, the vertical component includes a vertical block, the lower surface of which is fixedly connected to the outer circumferential surface of the support rod, and a connecting rod is rotatably connected to the end of the vertical block away from the support rod. The end of the connecting rod away from the vertical block is rotatably connected to the outer circumferential surface of the connecting pipe.

[0012] Furthermore, a connecting rod is provided below the support plate, and the two ends of the connecting rod are respectively rotatably connected to the outer surface of the support leg located on the same side of the two support rods, so as to realize the synchronous adjustment of the multiple support legs. The lower end of the support leg is provided with a braked roller.

[0013] Furthermore, the connecting rod and the link are both designed to be parallel to the upper surface of the bearing plate, and the vertical block and the support leg are both designed to be parallel to the axis of the connecting pipe.

[0014] Furthermore, the sealing element includes an inner ring and an outer ring that slide against the inner wall surface of the receiving groove. Both the inner ring and the outer ring have sealing rings embedded in arc grooves at their bottom ends. A reciprocating rod is fixedly connected to the upper surface of both the inner ring and the outer ring. The reciprocating rod passes through the base and is fixedly connected to a ring plate. A spring connected to the lower surface of the ring plate is provided on the upper surface of the base. The outer circumferential surface of the inner ring, the inner circumferential surface of the outer ring, and the lower surface of the base together form a sealing cavity. A smoothing element is provided inside the sealing cavity.

[0015] Furthermore, a cylinder is provided on the upper surface of the bearing plate, and an output rod is slidably connected to the bottom end of the cylinder. The output rod passes through the bearing plate and is fixedly connected to a pressure plate that fits against the upper surface of the ring plate.

[0016] Furthermore, the smoothing component includes a scraper, and a toothed ring is rotatably connected inside the base and fixedly connected to the upper surface of the scraper. A gear that meshes with the inner circumference of the toothed ring is provided inside the base. A connecting shaft is fixedly connected to the middle of the gear, and the top of the connecting shaft can be driven by a handwheel or a motor.

[0017] The scraper employs an inclined design, comprising radial and circumferential inclined surfaces. In the radial inclined surface, the lowest point of the scraper near the inner ring is higher than the lowest point near the outer ring, ensuring that after the sealing material is applied, a wedge-shaped sealing structure is formed, with the highest point near the outer surface of the inner ring and the lowest point near the outer ring. The circumferential inclined surface is the working surface where the scraper contacts the sealing material. Designed along its circumferential rotational direction, it is higher at the front and lower at the rear, meaning the front side is higher than the rear side in the direction of rotational movement.

[0018] Furthermore, an overflow box is fixedly connected to the outer circumference of the measuring cylinder, and a notch is provided on the top of the measuring cylinder near the overflow box, with the bottom of the inner wall of the notch flush with the zero mark.

[0019] The base has an inlet that communicates with the inside of the sealed cavity. The top of the inlet is fixedly connected to an inlet tube, and the top of the support rod is fixedly connected to a bracket handle.

[0020] The technical solution provided by this invention has the following advantages compared with the prior art:

[0021] This invention comprises a base, a support unit, a connecting pipe, and a measuring cylinder. A bearing plate, connecting rod, and support legs on both sides form a first set of parallelogram linkage structures. A connecting pipe, vertical block, connecting rod, and bearing plate form a second set of parallelogram linkage structures. By ensuring the plumbness of the support legs, the plumbness of the connecting pipe and its top measuring cylinder can be guaranteed. Simultaneously, the base remains parallel to the slope surface, laying a foundation for subsequent sealing. Regardless of the slope angle, the support legs remain plumb under gravity, and the connecting pipe automatically maintains a plumb posture through structural constraints, ensuring the measuring cylinder is vertical throughout, thus achieving accurate liquid level readings. This invention resolves the core contradiction between the equipment base's fit against the slope and the perpendicularity of the detection benchmark under slope conditions, significantly improving the accuracy of the detection data. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the present invention located on a slope;

[0024] Figure 2 This is a cross-sectional structural diagram of the bearing plate, base, connecting pipe and support leg in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the bearing plate, vertical member, connecting rod and support leg in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the separated structure of the support plate, the connecting pipe and the base according to an embodiment of the present invention;

[0027] Figure 5 This is a cross-sectional structural diagram of the base according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the smoothing component according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the separated structure of the inner ring, outer ring, and sealing ring according to an embodiment of the present invention;

[0030] Figure 8 This is an embodiment of the present invention. Figure 1 A magnified structural diagram of part A in the middle.

[0031] The labels in the diagram represent: 1. Base; 11. Ball groove; 12. Seal; 121. Inner ring; 1211. Arc groove; 122. Outer ring; 123. Sealing ring; 124. Reciprocating rod; 125. Ring plate; 126. Spring; 13. Smoothing component; 131. Scraper; 132. Gear ring; 133. Gear; 134. Coupling shaft; 2. Connecting pipe; 21. Support bracket; 3. Measuring cylinder; 31. Overflow box; 32. Notch; 4. Support unit; 41. Bearing plate; 42. Bearing rod; 43. Support leg; 431. Roller with brake; 44. Vertical component; 441. Vertical block; 442. Connecting rod; 45. Connecting rod; 5. Cylinder; 51. Output rod; 52. Pressure plate. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] The present invention will be further described below with reference to embodiments.

[0034] Example:

[0035] Please see Figures 1-8 This invention provides a technical solution: a multi-point detection system for bridge seepage based on a multi-faceted sealed cavity structure, comprising:

[0036] The base 1 has a ball groove 11 on its upper surface and a sealing element 12 is provided in the storage groove on its lower surface.

[0037] The bottom end of the connecting pipe 2 is designed to fit the inner wall surface of the ball groove 11 in a spherical shape. The lower part of the inner wall of the connecting pipe 2 is designed to be flared. The upper surface of the connecting pipe 2 is fixedly connected to the support bracket 21.

[0038] Measuring cylinder 3, the bottom end of measuring cylinder 3 is detachably connected to the inner wall surface of support frame 21, and scale lines are provided on the outer circumference of measuring cylinder 3.

[0039] The support unit 4 includes a bearing plate 41 rotatably connected to the outer circumference of the connecting pipe 2. The bearing plate 41 is internally damped and rotatably connected to a bearing rod 42. Two bearing rods 42 are symmetrically arranged around the measuring cylinder 3. The outer end of the bearing rod 42 passes through the bearing plate 41 and is fixedly connected to a support leg 43. The outer surface of the connecting pipe 2 is provided with a vertical member 44 for keeping the measuring cylinder 3 vertical.

[0040] The vertical component 44 includes a vertical block 441. The lower surface of the vertical block 441 is fixedly connected to the middle of the outer circumference of the support rod 42. A connecting rod 442 is rotatably connected to the end of the vertical block 441 away from the support rod 42. The end of the connecting rod 442 away from the vertical block 441 is rotatably connected to the outer circumference of the connecting pipe 2.

[0041] A connecting rod 45 is provided below the bearing plate 41. The two ends of the connecting rod 45 are rotatably connected to the outer surface of the support leg 43 located on the same side of the two bearing rods 42, so as to realize the synchronous adjustment of multiple support legs 43. The lower end of the support leg 43 is provided with a braked roller 431.

[0042] The connecting rod 45 and the connecting rod 442 are both designed to be parallel to the upper surface of the bearing plate 41, and the vertical block 441 and the support leg 43 are both designed to be parallel to the axis of the connecting pipe 2.

[0043] The sealing element 12 includes an inner ring 121 and an outer ring 122 that slide against the inner wall surface of the receiving groove. Both the inner ring 121 and the outer ring 122 have sealing rings 123 embedded in their bottom grooves 1211. The upper surfaces of the inner ring 121 and the outer ring 122 are fixedly connected to a reciprocating rod 124. The reciprocating rod 124 passes through the base 1 and is fixedly connected to a ring plate 125. The upper surface of the base 1 is provided with a spring 126 connected to the lower surface of the ring plate 125. The outer circumference of the inner ring 121, the inner circumference of the outer ring 122, and the lower surface of the base 1 together form a sealing cavity. A smoothing element 13 is provided inside the sealing cavity.

[0044] A cylinder 5 is provided on the upper surface of the bearing plate 41. An output rod 51 is slidably connected to the bottom end of the cylinder 5. The output rod 51 passes through the bearing plate 41 and is fixedly connected to a pressure plate 52 that fits against the upper surface of the ring plate 125.

[0045] The smoothing component 13 includes a scraper 131. A toothed ring 132 is rotatably connected to the inside of the base 1 and fixedly connected to the upper surface of the scraper 131. A gear 133 is provided inside the base 1 that meshes with the inner circumference of the toothed ring 132. A connecting shaft 134 is fixedly connected to the middle of the gear 133. The top of the connecting shaft 134 can be driven by a handwheel or a motor.

[0046] The scraper 131 is designed with an inclination. The side of the scraper 131 closer to the inner ring 121 is higher than the side closer to the outer ring 122. This allows the scraper 131 to form a wedge-shaped sealing structure with the highest point near the outer surface of the inner ring 121 and the lowest point near the outer ring 122 after the sealing material is applied.

[0047] An overflow box 31 is fixedly connected to the outer circumference of the measuring cylinder 3. A notch 32 is opened on the top of the measuring cylinder 3 near the overflow box 31. The bottom of the inner wall of the notch 32 is flush with the zero mark.

[0048] The base 1 has an injection port that communicates with the inside of the sealed cavity. The top of the injection port is fixedly connected to an injection pipe, and the top of the support rod 42 is fixedly connected to a bracket handle.

[0049] In the initial state, the inner ring 121 and outer ring 122 are completely housed in the storage groove of the base 1, not in contact with the ground. The sealing rings 123 at the bottom of the inner ring 121 and outer ring 122 are also located in the storage groove, not in contact with the outside. The spring 126 is in a naturally extended state and not compressed, driving the ring plate 125 connected to the upper end of the spring 126 to be within its stroke range, close to the side of the bearing plate 41. The inner ring 121 and outer ring 122 are pulled upward by the ring plate 125 and the reciprocating rod 124, so that their top ends are in contact with the top of the inner wall of the storage groove. The scraper 131 of the smoothing component 13 is located above the inner side of the sealing cavity and does not contact the inner ring 121 and outer ring 122. The inner wall of the ball groove 11 of the base 1 is in contact with the spherical outer surface at the bottom of the connecting pipe 2, and the two can rotate freely.

[0050] The connecting pipe 2 is naturally vertical, with its flared bottom end completely within the ball groove 11 of the base 1. The top support 21 is coaxially arranged with the connecting pipe 2. The measuring cylinder 3 is detachably threaded to the support 21 at its bottom end, and is vertical overall. The graduation lines on the outer surface of the measuring cylinder 3 are clearly visible. Among the graduation lines on the outer surface of the measuring cylinder 3, the topmost one is the zero graduation line, and the vertical graduations increase as they go down. The zero graduation line is flush with the bottom of the notch 32. The overflow box 31 is empty and located on one side of the measuring cylinder 3, and no water accumulates. The support plate 41 is horizontally fitted on the outer surface of the connecting pipe 2 and can rotate freely around the axis of rotation of the outer surface of the connecting pipe 2. The two support rods 42 are symmetrically distributed around the measuring cylinder 3. The support legs 43 at their outer ends are vertical, and the braked rollers 431 at the lower ends of the support legs 43 are in a released state, allowing the rollers to roll freely. The vertical block 441 of the vertical member 44 is vertically fixed to the bearing rod 42. The two ends of the connecting rod 442 are hinged to the vertical block 441 and the connecting pipe 2 respectively. At this time, the connecting rod 442 is in a natural extended state and has no stress deformation. The connecting rod 45 horizontally connects the support legs 43 on the same side of the two bearing rods 42, so that the two support legs 43 are symmetrical and parallel, and the overall support unit 4 has a stable symmetrical structure.

[0051] Cylinder 5 is fixed to the upper surface of bearing plate 41, output rod 51 is in a fully retracted state, pressure plate 52 is located above ring plate 125, the two are not in contact, ring plate 125 is only supported by the upward force of spring 126, without additional pressure. The overall center of gravity of the seepage detection equipment is located directly below the axis of the connecting pipe 2. When placed on a horizontal ground, the four braked rollers 431 are evenly stressed, the lower surface of base 1 remains parallel to the ground, and no components are tilted or deformed by force. The entire system is in a stable ready-to-work state. The equipment can be moved freely by pushing it with the bracket handle, or quickly adjusted to the initial detection position.

[0052] The process of equipment movement and initial positioning:

[0053] The operator moves the entire device by gripping the handle on the support rod 42. The braked rollers 431 at the lower end of the support legs 43 roll, propelling the device flexibly across the bridge surface until it reaches the inspection point. At this point, the brake mechanism of the braked rollers 431 is locked, initially fixing the device at the inspection point and preventing further movement. If the inspection area has multiple points, the braked rollers 431 can be used to quickly switch inspection positions, improving the efficiency of multi-point inspection.

[0054] When the detection point is a slope:

[0055] Move the equipment to the area of ​​the bridge to be inspected. The operator holds the two support handles with both hands and lowers the equipment vertically. Taking a slope that is higher on the left and lower on the right as an example, during the lowering process, the two support handles and support legs 43 remain vertical under the action of gravity, and the braked roller 431 on the left side will contact the ground first. At this time, keep the vertical position of the support handle and support leg 43 on this side fixed, and continue to lower the support handle and support leg 43 on the other side. Since the bearing plate 41 is parallel to the connecting rod 45 and the center lines of the support legs 43 on both sides are parallel, the bearing plate 41, connecting rod 45 and the two support legs 43 on the same side form a parallelogram structure. The bearing plate 41 will rotate clockwise around the center line of the left bearing rod 42. The angle between the bearing plate 41 and the left support leg 43 gradually decreases from 90 degrees, and the angle between the bearing plate 41 and the right support leg 43 gradually increases from 90 degrees until the outer surface of the braked roller 431 at the lower end of the right support leg 43 also contacts the slope surface. At this point, the two support legs 43 remain vertical, while only the bearing plate 41 tilts with the slope, creating an angle difference with the support legs 43. The braked rollers 431 are then fixed in place to prevent displacement.

[0056] During this process, the vertical block 441 on the support rod 42 is fixed in position with the support rod 42. Since the axis of the connecting pipe 2 is parallel to the outer surface of the vertical block 441, and the connecting rod 442 is parallel to the upper surface of the support plate 41, the connecting pipe 2, the vertical block 441, the connecting rod 442 and the support plate 41 form a parallelogram structure. When the support plate 41 rotates, the angle between it and the left support leg 43 decreases. At this time, the connecting rod 442, which is parallel to the support plate 41, will tilt synchronously with the support plate 41. Since the position of the right vertical block 441 is fixed (keeping vertical with the right support leg 43), the connecting rod 442 will push the connecting pipe 2 to rotate counterclockwise around the hinge point connected to the support plate 41, so that the connecting pipe 2 drives the measuring cylinder 3 to be parallel to the axis of the support leg 43, and both are in a vertical state.

[0057] Because of the constraint relationship that the connecting pipe 2 and the vertical block 441 remain parallel, and the connecting rod 442 and the supporting plate 41 remain parallel, the parallelogram structure remains in place throughout the deformation process. This ensures that the axis of the connecting pipe 2 remains parallel to the vertical block 441 and the supporting leg 43, while the supporting leg 43 remains vertical. Therefore, the axis of the connecting pipe 2 automatically maintains its verticality under the structural constraint and will not shift with the tilt of the supporting plate 41. The axis of the measuring cylinder 3 always coincides with the axis of the connecting pipe 2. Therefore, through the transmission constraint of the parallelogram structure, the measuring cylinder 3 can remain vertical, preventing the measuring cylinder 3 from tilting due to the base 1 adhering to the slope, thus ensuring accurate liquid level readings.

[0058] During the placement of the seepage detection equipment, if the slope has a large inclination angle, the scraper 131 on the left side of the base 1 will contact the ground first. As the right support leg 43 contacts the ground, the base 1 will tilt. Since the bottom of the connecting pipe 2 adopts a spherical design and fits against the inner wall of the ball groove 11 opened on the upper surface of the base 1, the connecting pipe 2 can rotate relative to the base 1 around the center of the ball groove 11.

[0059] The process of filling with sealant:

[0060] When cylinder 5 is activated, it drives output rod 51 to extend downwards. Output rod 51 can be perpendicular to base 1 and slidably connected to it. The bottom end of output rod 51 drives pressure plate 52 to move downwards. If the slope angle is large, base 1 is not completely parallel to the slope surface at this time. As pressure plate 52 moves downwards, the contact area between the lower surface of pressure plate 52 and the upper surface of ring plate 125 will gradually increase from point to surface. During this process, ring plate 125, base 1, reciprocating rod 124, inner ring 121 and outer ring 122 will be driven to rotate around the midpoint of ball groove 11.

[0061] When the lower surface of the pressure plate 52 is fully in contact with the upper surface of the ring plate 125, it pushes the ring plate 125 downward to compress the spring 126, and drives the reciprocating rod 124, the inner ring 121, and the outer ring 122 to move downward simultaneously. The inner ring 121 and the outer ring 122 slide downward along the receiving groove of the base 1, gradually protruding from the lower surface of the base 1, and together with the lower surface of the base 1, they form a sealing cavity for placing sealing material. Until the sealing rings 123 at the bottom of the inner ring 121 and the outer ring 122 are tightly in contact with the bridge deck slope, the sealing rings 123 inside the arc groove 1211 undergo slight deformation to adapt to the small protrusions and depressions of the bridge deck, initially improving the sealing effect, and the cylinder 5 stops outputting.

[0062] Sealing material is injected into the sealing cavity through the injection pipe of base 1. After injection, the operator turns the handwheel, which drives the connecting shaft 134 and gear 133 to rotate. Gear 133 meshes with gear ring 132, driving gear ring 132 to rotate around the axis of base 1. The scraper 131 on the lower surface of gear ring 132 rotates synchronously, smoothing the sealing material in the sealing cavity. Because scraper 131 adopts an inclined design (the lowest point near the inner ring 121 is higher, and the lowest point near the outer ring 122 is lower), the sealing material is squeezed during the smoothing process to form a wedge-shaped sealing structure with a higher inner and lower outer edge. That is, the thickness of the sealing material is the greatest on the side near the inner ring 121 and the smallest on the side near the outer ring 122. This wedge-shaped structure can use gravity to make the sealing material fit tightly against the bridge surface, while enhancing the anti-leakage ability of the sealing cavity, especially meeting the sealing requirements under sloping conditions, preventing the detection water from leaking along the slope, and meeting the high requirements for sealing reliability of new dense materials.

[0063] The process of water seepage detection:

[0064] After the sealing cavity is constructed, test water is injected into the sealing cavity through the injection pipe. The water flows into the connecting pipe 2 through the flared end of the connecting pipe 2, and then into the measuring cylinder 3. When the water level in the measuring cylinder 3 rises to the zero mark, the excess water flows into the overflow box 31 through the notch 32. At this time, water injection is stopped to ensure that the initial water level at each test point is consistent, without relying on human eyes.

[0065] After standing for a period of time, observe the water level change in measuring cylinder 3. If there is water seepage on the bridge inspection surface, the water in the sealed cavity will seep into the bridge deck, causing the water level in measuring cylinder 3 to drop. The water level value at different time points can be accurately read through the scale lines on the outer surface of measuring cylinder 3. Combined with the inspection time and the area of ​​the sealed cavity, the amount of water seepage on the bridge deck can be calculated, thus completing the water seepage inspection at that point.

[0066] After completing the test at one point, cylinder 5 is closed, and the output rod 51 of cylinder 5 retracts upward. The elastic reaction force of spring 126 pushes ring plate 125 upward, which, through reciprocating rod 124, drives inner ring 121 and outer ring 122 back into the receiving groove of base 1. The outer circumferential surfaces of inner ring 121 and outer ring 122 slide relative to the inner wall of the receiving groove of base 1. Since the inner wall of the receiving groove is a smooth rigid surface and is in close contact with the outer surfaces of inner ring 121 and outer ring 122, the relative movement of the two creates a scraping effect. The sealing material adhering to the outer surface of inner ring 121 is scraped off by the outer surface of the groove opening and detaches from the surface of inner ring 121. Finally, the brake of braked roller 431 is released, allowing the equipment to move to the next test point. The above steps are repeated to achieve multi-point seepage detection of bridges.

[0067] In summary, this seepage detection equipment has the following advantages:

[0068] Advantage 1: Existing equipment is prone to tilting of the measuring cylinder 3 during slope testing, ultimately leading to distorted readings. This invention addresses this issue by employing two sets of parallelogram-linked structures (the first set consisting of a bearing plate 41, connecting rod 45, and two side support legs 43; the second set consisting of a connecting pipe 2, vertical block 441, connecting rod 442, and bearing plate 41) to achieve a chain-like constraint ensuring the verticality of the support legs 43, the connecting pipe 2, and the measuring cylinder 3. Regardless of the slope angle, the support legs 43 remain vertical under gravity, and the connecting pipe 2 automatically maintains its vertical posture through structural constraints, ensuring the measuring cylinder 3 remains vertical throughout. This completely resolves the core contradiction between the equipment base 1's contact with the slope and the perpendicularity of the testing benchmark under slope conditions, significantly improving the accuracy of the testing data.

[0069] Secondly, the spherical design at the bottom of the connecting pipe 2, in conjunction with the inner wall of the ball groove 11 of the base 1, forms a universal joint structure, allowing the connecting pipe 2 and the measuring cylinder 3 to rotate freely relative to the base 1. This is the foundation for achieving the slope self-adaptive function. Simultaneously, the overall center of gravity of the equipment is located directly below the axis of the connecting pipe 2, and with the symmetrical support unit 4, the stability of the equipment during movement and rest is ensured, making it less prone to tipping over and enhancing its safety and reliability in complex bridge operation environments.

[0070] Thirdly, existing equipment has a simple sealing structure, poor adhesion to the bridge deck, and is prone to side leakage. In this invention, when the cylinder 5 moves the pressure plate 52 downward via the output rod 51, it will move the inner ring 121, the outer ring 122, and the sealing ring 123 at its bottom downward until the sealing ring 123 undergoes slight deformation and completely adheres to the slope surface. At this time, the space enclosed by the inner ring 121, the sealing ring 123 at its bottom, and the lower surface of the base 1 is a detection chamber, used for subsequent connection to the measuring cylinder 3 and placement of liquid, forming the first anti-seepage sealing line. The core function of this sealing line is positioning and basic seepage prevention. On the one hand, it provides a stable boundary for the subsequent filling of sealing materials; on the other hand, through its flexible adhesion characteristics, it adapts to the macroscopic morphological changes of the slope surface, laying the foundation for the construction of the second sealing line. When the waterproof sealant enters the sealing cavity formed by the outer circumference of the inner ring 121, the inner circumference of the outer ring 122, and the lower surface of the base 1 through the injection pipe, the sealant is smoothed by the smoothing component 13. The wedge-shaped sealant and the outer circumference of the inner ring 121 form a second anti-seepage sealing line. The core function of this sealing line is to strengthen and provide a bottom-line anti-seepage. Addressing the characteristic of water leakage along the slope under sloping conditions, the pressure compensation effect of the wedge-shaped structure of the sealant blocks potential leakage paths from the first sealing line, forming a double layer of protection. The multi-faceted sealing cavity formed by the inner ring 121, the outer ring 122, and the lower surface of the base 1, combined with the flexible fit design of the elastic sealing ring 123, can adapt to the minor unevenness of the bridge deck.

[0071] Fourthly, the inclined design of scraper 131 includes radial and circumferential inclined surfaces. The radial inclined surface creates a wedge-shaped sealing base for the sealing material. Scraper 131 extends radially inclined along the base 1, with its lowest point exhibiting a radially inclined distribution that is higher on the inside and lower on the outside; that is, the lowest point is higher on the side closer to the inner ring 121 and lower on the side closer to the outer ring 122. This structure allows the sealing material to naturally form a wedge-shaped sealing layer with a high center and gradually decreasing periphery in the radial direction, utilizing gravity to enhance the sealing effect and effectively preventing water leakage under sloping conditions. The circumferential inclined surface is the working surface where scraper 131 contacts the sealing material. Designed along its circumferential rotational movement direction, it is a circumferential inclined surface that is higher at the front and lower at the rear, meaning the front side is higher and the rear side is lower in the rotational movement direction. When the scraper 131 rotates circumferentially around the central axis of the base 1, the circumferential inclined surface creates a combined pushing and crushing effect. As the scraper 131 rotates, the front side (higher end) of its circumferential inclined surface contacts the sealing material first, and the guiding effect of the inclined surface pushes the material towards the rear side (lower end) in the direction of rotation. During this process, the sealing material is forcibly compressed, and the internal voids are squeezed out. Especially at the inner wall of the inner ring 121 and the outer ring 122, the material filling density is significantly increased, avoiding leakage channels caused by loose material.

[0072] Fifthly, existing equipment often relies on human judgment of the initial water level, resulting in significant errors. This invention features a notch 32 at the top of the measuring cylinder 3, with its bottom flush with the zero mark. When water is injected for testing, excess water automatically flows into the overflow box 31 through the notch 32, ensuring consistent initial water levels at all testing points without manual intervention. This completely eliminates human reading errors and further guarantees the comparability and accuracy of the test data.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-point detection system for bridge water seepage based on a multi-faceted sealed cavity structure, characterized in that, include: The base (1) has a ball groove (11) on its upper surface and a sealing element (12) is provided in the storage groove on its lower surface. The bottom end of the connecting pipe (2) is designed to fit the inner wall surface of the ball groove (11) in a spherical shape. The lower part of the inner wall of the connecting pipe (2) is designed to be flared. The upper surface of the connecting pipe (2) is fixedly connected to a support frame (21). Measuring cylinder (3), the bottom end of the measuring cylinder (3) is detachably connected to the inner wall surface of the support frame (21), and the outer circumferential surface of the measuring cylinder (3) is provided with scale lines; The support unit (4) includes a bearing plate (41) rotatably connected to the outer circumference of the connecting pipe (2). The bearing plate (41) is internally damped and rotatably connected to a bearing rod (42). There are two bearing rods (42) symmetrically arranged around the measuring cylinder (3). The outer end of the bearing rod (42) passes through the bearing plate (41) and is fixedly connected to a support leg (43). The outer surface of the connecting pipe (2) is provided with a vertical member (44) for keeping the measuring cylinder (3) vertical. The vertical component (44) includes a vertical block (441). The lower surface of the vertical block (441) is fixedly connected to the outer circumferential surface of the bearing rod (42). The end of the vertical block (441) away from the bearing rod (42) is rotatably connected to a connecting rod (442). The end of the connecting rod (442) away from the vertical block (441) is rotatably connected to the outer circumferential surface of the connecting pipe (2). There is a constraint relationship that the connecting pipe (2) and the vertical block (441) always remain parallel, and the connecting rod (442) and the bearing plate (41) always remain parallel. The parallelogram structure is always established during the deformation process.

2. The bridge water seepage multi-point detection system based on the multi-faceted sealed cavity structure according to claim 1, characterized in that: A connecting rod (45) is provided below the bearing plate (41). The two ends of the connecting rod (45) are rotatably connected to the outer surface of the support leg (43) on the same side of the two bearing rods (42). The lower end of the support leg (43) is provided with a braked roller (431).

3. The bridge water leakage multi-point detection system based on the multi-faceted sealed cavity structure according to claim 2, characterized in that: The connecting rod (45) and connecting rod (442) are both designed to be parallel to the upper surface of the bearing plate (41), and the vertical block (441) and support leg (43) are both designed to be parallel to the axis of the connecting pipe (2).

4. The bridge seepage multi-point detection system based on a multi-faceted sealed cavity structure according to claim 1, characterized in that: The sealing element (12) includes an inner ring (121) and an outer ring (122) that slide against the inner wall surface of the receiving groove. Both the inner ring (121) and the outer ring (122) are fitted with sealing rings (123) through arc grooves (1211) at their bottom ends. Both the inner ring (121) and the outer ring (122) are fixedly connected to a reciprocating rod (124). The reciprocating rod (124) passes through the base (1) and is fixedly connected to a ring plate (125). The upper surface of the base (1) is provided with a spring (126) connected to the lower surface of the ring plate (125). The outer circumferential surface of the inner ring (121), the inner circumferential surface of the outer ring (122), and the lower surface of the base (1) together form a sealing cavity. A smoothing element (13) is provided inside the sealing cavity.

5. A bridge seepage multi-point detection system based on a multi-faceted sealed cavity structure according to claim 3, characterized in that: A cylinder (5) is provided on the upper surface of the bearing plate (41). An output rod (51) is slidably connected to the bottom end of the cylinder (5). The output rod (51) passes through the bearing plate (41) and is fixedly connected to a pressure plate (52) that is in contact with the upper surface of the ring plate (125).

6. The bridge seepage multi-point detection system based on a multi-faceted sealed cavity structure according to claim 4, characterized in that: The smoothing component (13) includes a scraper (131), and the base (1) is rotatably connected to a toothed ring (132) which is fixedly connected to the upper surface of the scraper (131). The base (1) is provided with a gear (133) that meshes with the inner circumference of the toothed ring (132). The gear (133) is fixedly connected to a connecting shaft (134) in the middle. The scraper (131) is designed with an inclination.

7. The bridge water seepage multi-point detection system based on the multi-faceted sealed cavity structure according to claim 1, characterized in that: An overflow box (31) is fixedly connected to the outer circumference of the measuring cylinder (3). A notch (32) is provided on the top of the measuring cylinder (3) near the overflow box (31). The bottom of the inner wall of the notch (32) is flush with the zero mark.

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