A non-destructive automated closure device for cracks in the interior sealed space of a bridge

Abstract

This invention provides a non-destructive, automated sealing device for cracks in enclosed spaces within bridges. It includes a main pipe with a spray plate at one end, multiple spray channels on the spray plate, and a delivery pipe connected to these spray channels within the main pipe. Multiple support frames are hinged to the main pipe, with rollers at their ends. A spreading assembly connected to the support frames is also located within the main pipe, driving the multiple support frames to rotate and open / close. This device achieves complete sealing of the crack without removing the bridge deck pavement, preventing secondary damage to the original structure, shortening the repair cycle, reducing project costs, and effectively improving work efficiency.

Description

Technical Field

[0001] This utility model specifically relates to a non-destructive automated sealing device for cracks in the sealed space inside a bridge. Background Technology

[0002] Small box girder and hollow slab bridges are widely used in medium- and small-span road sections due to their lightweight structure and high construction efficiency. They bear the high-frequency traffic loads of passenger and freight vehicles and are an important support for the smooth operation of the transportation network. However, during long-term service, these bridges are subjected to vehicle loads and temperature changes, which can easily cause longitudinal or transverse cracks to form inside the beams, seriously affecting the durability and load-bearing capacity of the structure.

[0003] These cracks may seem tiny, but they can become channels for corrosive media such as rainwater, de-icing agents, and industrial dust. Once these media penetrate the interior of the beam, they will accelerate the corrosion of the steel bars and the carbonization of the concrete, which will not only significantly reduce the durability of the structure, but also weaken the load-bearing capacity of the beam. In severe cases, they may cause structural safety hazards. Therefore, it is necessary to repair the cracks in a timely manner.

[0004] However, due to the confined and enclosed space inside the box slab, it is difficult for personnel to enter and carry out routine maintenance work. Currently, cracks can only be sealed on the top and bottom surfaces of the hollow slab after the bridge deck pavement and integral layer have been removed; there is a lack of means to seal internal cracks. Existing methods not only cannot repair internal cracks, but also suffer from long repair cycles, high engineering costs, low construction efficiency, and disruption to traffic. This has become a technical bottleneck restricting the maintenance of such bridges. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a non-destructive automated sealing device for cracks in the sealed space inside bridges. This addresses the technical problems mentioned in the background art, where repairing cracks inside beams currently mostly involves removing the bridge deck pavement layer before entering the box girder to repair the cracks. This method not only causes secondary damage to the original structure and has a long repair cycle, but also results in high engineering costs and low efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a non-destructive automated sealing device for cracks in the sealed space inside a bridge, comprising: Main pipeline; A spraying disc is provided at the end of the main pipeline. The spraying disc is provided with multiple sets of spraying channels, and the main pipeline is also provided with a delivery pipe that communicates with the multiple sets of spraying channels. Multiple sets of support frames are arranged circumferentially, and their ends are hinged to the main pipe. Rollers are provided at the ends of the support frames. An expansion assembly is installed inside the main pipe and connected to the support frame to drive multiple sets of the support frames to rotate and open / close.

[0007] In a preferred embodiment, a connecting sleeve is provided at the bottom of the spraying disc, the connecting sleeve is rotatably disposed at the end of the main pipe, and multiple sets of spray channels are bent.

[0008] In a preferred embodiment, a sealing sleeve is fitted at the end of the delivery pipe, and the sealing sleeve abuts against the inner wall of the main pipe.

[0009] In a preferred embodiment, a support plate is provided on the main pipeline, and the end of the support frame is hinged to the support plate.

[0010] In a preferred embodiment, the spreading component includes: A drive rod is slidably inserted into the main pipe along its axis; A drive seat is mounted on the drive rod, and multiple sets of hinge seats are arranged circumferentially on the drive seat. A sliding groove is provided on the main pipe, and the hinge seats are slidably disposed within the sliding groove. The struts are provided in multiple sets, with one end hinged to the hinge seat and the other end hinged to the support frame.

[0011] Compared with the prior art, the present invention has the following beneficial effects: When using this device, operating holes are first drilled obliquely at the front and rear ends of the bottom of the hollow slab. After multiple sets of support frames are closed by the expansion component, the device is inserted into the front hole. Then, the multiple sets of support frames are opened by the expansion component, so that multiple sets of rollers abut against the inner wall of the small box girder or hollow slab bridge. This allows the device to be easily moved within the beam. After being moved to the designated position, gas is supplied into the delivery pipe to clean the dust on the surface of the crack. Then, repair gel is supplied to repair the crack. During the spraying of the repair gel, the device is slowly removed to achieve complete sealing of the crack. The entire repair process does not require the removal of the bridge deck pavement layer, does not cause secondary damage to the original structure, has a short repair cycle, reduces engineering costs, and effectively improves work efficiency.

[0012] Furthermore, the device features a spray disc that can rotate at the end of the main pipe, and a bendable spray channel that can rotate the spray disc during spraying for comprehensive spraying, thus increasing the range of dust removal and repair. The control of the expansion component can be achieved by pushing and pulling the drive rod, making it simple to operate and providing stable support. It can also adapt to the size of the space inside the beam, thus increasing the applicability of the device. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1 A three-dimensional structural schematic diagram of a non-destructive automated sealing device for cracks in the sealed space inside a bridge, provided by this utility model. Figure 2 This is a schematic diagram of the spraying disc in a non-destructive automated sealing device for cracks in a sealed space inside a bridge, according to the present invention. Figure 3 This is a schematic diagram of the internal structure of the main body in a non-destructive automated sealing device for cracks in a sealed space inside a bridge, according to this utility model. Figure 4 This is a schematic diagram of the structure of the opening component in a non-destructive automated sealing device for cracks in a sealed space inside a bridge, according to the present invention. Figure label: 1. Main pipe; 2. Sluice; 3. Spraying disc; 4. Spraying channel; 5. Connecting sleeve; 6. Delivery pipe; 7. Sealing sleeve; 8. Support plate; 9. Drive seat; 10. Hinge seat; 11. Drive rod; 12. Support frame; 13. Roller; 14. Support rod. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0016] Example: like Figures 1 to 3 As shown, this utility model provides a non-destructive automated sealing device for cracks in the sealed space inside a bridge. It includes a main pipe 1, a spraying disc 3 at the end of the main pipe 1, multiple spraying channels 4 on the spraying disc 3, and a delivery pipe 6 connected to the multiple spraying channels 4 inside the main pipe 1. When using the device, an operating hole can be drilled obliquely at the front and rear ends of the bottom of the hollow slab of a small box girder or hollow slab bridge. The device is then inserted into the hole, and cleaning gas can be delivered through the delivery pipe 6 to clean the surface of the crack. Repair gel is then supplied to repair the crack.

[0017] like Figure 2 , 3As shown, in this embodiment, a connecting sleeve 5 is provided at the bottom of the spray disc 3. The connecting sleeve 5 is rotatably disposed at the end of the main pipe 1, and multiple sets of spray channels 4 are bent. A sealing sleeve 7 is fitted at the end of the delivery pipe 6, and the sealing sleeve 7 abuts against the inner wall of the main pipe 1.

[0018] By arranging the bend-shaped spray channel 4, when gas or gel fluid is transported to the disc through this pipe, a tangential jet is generated through the spiral channel. Based on the principle of fluid momentum angular momentum, a driving torque is formed, causing the disc to rotate around its axis, thus achieving uniform dust removal or gel spraying. The arrangement of the sealing sleeve 7 prevents air or repair gel leakage, improving the repair effect.

[0019] like Figure 1 , 3 As shown in Figure 4, in this embodiment, a support plate 8 is provided on the main pipe 1, and multiple sets of support frames 12 are circumferentially hinged on the support plate 8. Rollers 13 are provided at the ends of the support frames 12. A spreading assembly connected to the support frames 12 is provided inside the main pipe 1, and the spreading assembly drives the multiple sets of support frames 12 to rotate and open. The spreading assembly includes a drive rod 11 that is slidably inserted inside the main pipe 1. A drive seat 9 is provided on the drive rod 11. Multiple sets of hinge seats 10 are arranged circumferentially on the drive seat 9. A sliding groove 2 is provided on the main pipe 1, and the hinge seats 10 are slidably disposed in the sliding groove 2. It also includes multiple sets of support rods 14, one end of which is hinged to the hinge seat 10, and the other end is hinged to the support frame 12.

[0020] The drive rod 11 can be pulled to drive multiple sets of hinged seats 10 to slide within the slide groove 2, thereby controlling the rotation and retraction of multiple sets of support frames 12 via multiple sets of struts 14. The device is then inserted into the operating hole, and the drive rod 11 is pushed to open, causing the multiple sets of support frames 12 to rotate and open until they contact the internal space of the bridge. The multiple sets of support frames 12 stably support the device within the bridge's internal space, and the rollers 13 ensure stable movement within the bridge's internal space. Furthermore, it is understood that the main pipe 1, the delivery pipe 6, and the drive rod 11 are all made of alloy materials with a certain degree of bending stiffness and the ability to undergo moderate artificial plastic deformation to ensure guidance and adaptability when penetrating the slab. After extending from the main pipe 1, the delivery pipe 6 and the drive rod 11 are fixed in sections along their length using adjustable clamps to ensure the overall rigidity and coordinated operation performance of the system.

[0021] The specific usage and beneficial effects of this utility model are as follows: When using this device, operating holes are first drilled obliquely at the front and rear ends of the bottom of the hollow slab. After the multiple sets of support frames 12 are closed by the expansion component, the device is inserted into the front hole. Then, the multiple sets of support frames 12 are opened by the expansion component, so that the multiple sets of rollers 13 abut against the inner wall of the small box girder or hollow slab bridge. This allows the device to be easily moved within the beam. After being moved to the designated position, gas is supplied into the delivery pipe 6 to clean the dust on the surface of the crack. Then, repair gel is supplied to repair the crack. During the spraying of the repair gel, the device is slowly removed to achieve complete sealing of the crack. The entire repair process does not require the removal of the bridge deck pavement layer, does not cause secondary damage to the original structure, has a short repair cycle, reduces engineering costs, and effectively improves work efficiency.

[0022] Furthermore, the device is configured such that the spray disc 3 can rotate at the end of the main pipe 1, and the spray channel 4 is bent, which can drive the spray disc 3 to rotate during the spraying process to carry out comprehensive spraying, thereby increasing the scope of dust removal and repair. The control of the expansion component can be achieved by pushing and pulling the drive rod 11, which is simple to operate and provides stable support. At the same time, it can adapt to the size of the space inside the beam, thus improving the applicability of the device.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to this utility model, which is obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model fall within the scope of protection claimed by this utility model.

Claims

1. A non-destructive automated sealing device for cracks in sealed spaces inside bridges, characterized in that, Including: Main pipeline (1); A spraying disc (3) is provided at the end of the main pipe (1). The spraying disc (3) is provided with multiple sets of spraying channels (4), and the main pipe (1) is also provided with a delivery pipe (6) that communicates with the multiple sets of spraying channels (4). Support frame (12), multiple sets arranged circumferentially, and its ends are hinged to the main pipe (1), and the ends of the support frame (12) are provided with rollers (13); and The expansion assembly is set inside the main pipe (1) and connected to the support frame (12) to drive multiple sets of the support frames (12) to rotate and open.

2. The non-destructive automated sealing device for cracks in sealed spaces inside bridges according to claim 1, characterized in that: The bottom of the spraying disc (3) is provided with a connecting sleeve (5), which is rotatably disposed at the end of the main pipe (1), and multiple sets of the spraying channels (4) are bent.

3. The non-destructive automated sealing device for cracks in sealed spaces inside bridges according to claim 1, characterized in that: The end of the delivery pipe (6) is fitted with a sealing sleeve (7), which abuts against the inner wall of the main pipe (1).

4. The non-destructive automated sealing device for cracks in sealed spaces inside bridges according to claim 1, characterized in that: A support plate (8) is provided on the main pipe (1), and the end of the support frame (12) is hinged to the support plate (8).

5. A non-destructive automated sealing device for cracks in sealed spaces inside bridges according to claim 1, characterized in that, The expanding component includes: The drive rod (11) is slidably inserted into the main pipe (1) along its axis; A drive seat (9) is mounted on the drive rod (11). Multiple sets of hinge seats (10) are arranged circumferentially on the drive seat (9). A groove (2) is provided on the main pipe (1), and the hinge seats (10) are slidably disposed within the groove (2). The strut (14) is provided in multiple sets, with one end hinged to the hinge seat (10) and the other end hinged to the support frame (12).

Images