Prefabricated hollow slab girder bridge hinge joint reinforcing device

Abstract

The utility model provides a hinge joint reinforcing device for a prefabricated hollow slab girder bridge, and relates to the technical field of hinge joint reinforcing. The prefabricated hollow slab girder bridge hinge joint reinforcing device comprises a supporting plate, an air outlet plate used for blowing air to a hinge joint is installed on the inner bottom wall of the supporting plate, a power mechanism used for providing wind power is arranged below the air outlet plate, and two connecting mechanisms arranged in a mirror image mode are arranged on the outer surface of the supporting plate; and rotatable positioning rollers are arranged at the ends, away from the air outlet plate, of the two connecting mechanisms. According to the hinge joint reinforcing device for the prefabricated hollow slab girder bridge, the positioning roller rotates and advances in the hinge joint, so that the air outlet plate is aligned with the hinge joint all the time in the moving process, dislocation is avoided during moving, the effect of avoiding dislocation is achieved, and the problem that when the air blowing position is moved and replaced, due to the fact that no limitation exists, alignment is conducted by workers is solved; and when position deviation occurs, adjustment needs to be carried out, and the operation is troublesome.

Description

Technical Field

[0001] This utility model relates to a reinforcement device, specifically a hinge joint reinforcement device for precast hollow slab beam bridges, belonging to the technical field of hinge joint reinforcement. Background Technology

[0002] Precast hollow slabs are precast concrete components manufactured in prefabrication yards. They are named for their hollow internal structure and have advantages such as good structural performance, light weight, standardized production, and convenient transportation, installation, and construction. They are widely used in the superstructure of small and medium-span beam bridges in my country. Generally, multiple main beams are connected to the bridge deck by transverse hinges to form a spatial integral structure to jointly bear the local loads on the roadway slab. However, with the increase in service life, load level, and frequent heavy vehicle traffic, the hinges of precast hollow slab beam bridges are prone to damage and cracking. Direct demolition and reconstruction would be costly and time-consuming, so secondary reinforcement is generally carried out.

[0003] Existing methods for reinforcing hinge joints in precast hollow slabs generally include adhesive injection reinforcement, reinforcement with connecting steel bars, grouting reinforcement, and overall repair reinforcement. The appropriate method can be selected based on the specific damage and repair cost. Adhesive injection reinforcement is suitable for minor damage. This process involves several steps, including grinding, cleaning debris from the hinge joint, and adhesive injection. Specialized adhesive is used to fill the gaps and enhance the connection performance of the hinge joint. Cleaning debris from the hinge joint makes the surface cleaner, allowing the adhesive to penetrate and fill the joint better, thus improving the fixing quality of the adhesive injection.

[0004] Existing methods for cleaning dust and debris typically require manual hand-held water hose rinsing or the use of a jet nozzle to blow air into the hinge joint. When using a blower to remove debris, it is sometimes necessary to move the machine while blowing air to clean different areas. However, since there are no restrictions on moving and changing the blowing position, workers must align the nozzles themselves. When there is a positional deviation, adjustments are required, which is quite troublesome. To address these issues, we provide a hinge joint reinforcement device for precast hollow slab beam bridges. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a device for reinforcing the hinge joints of precast hollow slab beam bridges. The specific technical solution is as follows:

[0006] A device for reinforcing hinge joints of a precast hollow slab beam bridge includes a support plate. An air outlet plate for blowing air into the hinge joint is installed on the inner bottom wall of the support plate. A power mechanism for providing air force is provided below the air outlet plate. Two mirror-mounted connecting mechanisms are provided on the outer surface of the support plate. A rotatable positioning roller is provided at the end of the two connecting mechanisms away from the air outlet plate. The positioning roller is located inside the hinge joint and can rotate forward. The center of the positioning roller and the center of the air outlet plate are located on the same vertical plane.

[0007] Preferably, a rubber block is slidably connected to the upper surface of the support plate, and a limiting mechanism is provided at the lower part of the rubber block to prevent the rubber block from falling off and to facilitate the rotation of the rubber block.

[0008] Preferably, the limiting mechanism includes a limiting block, which is fixed to the lower surface of the rubber block, and the inner wall of the support plate is provided with a groove for the limiting block to rotate.

[0009] Preferably, the power mechanism includes a fan, the upper end of which is connected to an air outlet pipe, the outer surface of which passes through the middle of the support plate and connects upward to the air outlet plate.

[0010] Preferably, the support mechanism includes a base plate, three round rods are fixedly connected to the upper surface of the base plate, the upper ends of the round rods are fixedly connected to a support plate, and the inner wall of the support plate is fixedly connected to a fan.

[0011] Preferably, the connecting mechanism includes a movable rod, one end of which is hinged to a support plate, and the other end of which is fixedly connected to a support block. The inner wall of the support block is rotatably connected to a positioning roller.

[0012] Preferably, a tension spring is fixedly connected to the outer surface of the support plate, and the end of the tension spring away from the support plate is fixedly connected to the movable rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This precast hollow slab beam bridge hinge joint reinforcement device uses components such as positioning rollers and air outlet plates. The upper ends of the two positioning rollers are placed inside the hinge joint, and the two positioning rollers provide two-point positioning, ensuring that the air outlet plate is always aligned with the hinge joint. The power mechanism blows air from below into the interior of the air outlet plate, facilitating air alignment. During movement, the positioning rollers can rotate and advance inside the hinge joint, ensuring that the air outlet plate remains aligned with the hinge joint throughout the movement, preventing misalignment. This eliminates the need for manual adjustments and solves the problem of cumbersome manual alignment by workers when moving or changing the air outlet position, which requires adjustments when positional deviations occur.

[0015] 2. This precast hollow slab beam bridge hinge joint reinforcement device, through the setting of rubber blocks and limiting mechanisms, allows the support plate to be pushed upwards when air needs to be blown in one position for a period of time. This causes the upper surface of the rubber block to press against the hollow slab, thereby reducing the distance between the air outlet plate and the hinge joint of the hollow slab. An opening is provided on one side of the rubber block, allowing most of the air to flow to the side of the opening, carrying dust with it. Workers standing on the side away from the opening can rotate the rubber block through the limiting mechanism to adjust the position of the opening, thus preventing dust from directly impacting the human body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the support plate in this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the power mechanism in this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the support plate in this utility model;

[0020] Figure 5 This is an exploded view of the positioning roller in this utility model.

[0021] Figure descriptions: 1. Support plate; 2. Air outlet plate; 3. Power mechanism; 301. Fan; 302. Air outlet pipe; 4. Rubber block; 5. Limiting mechanism; 501. Limiting block; 502. Groove; 6. Connecting mechanism; 601. Movable rod; 602. Support block; 7. Positioning roller; 8. Supporting mechanism; 801. Base plate; 802. Round rod; 9. Tension spring. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] Please see Figures 1-5The system includes a support plate 1, an air outlet plate 2 for blowing air into the hinge joint installed on the inner bottom wall of the support plate 1, a power mechanism 3 for providing airflow below the air outlet plate 2, two mirror-mounted connecting mechanisms 6 on the outer surface of the support plate 1, and a rotatable positioning roller 7 at the end of each connecting mechanism 6 away from the air outlet plate 2. The positioning roller 7 is located inside the hinge joint and can rotate forward. The center of the positioning roller 7 is on the same vertical plane as the center of the air outlet plate 2. The air outlet plate 2 is hollow inside, and the air outlet plate 2 gradually moves towards the center from bottom to top, forming a force on the internal air at the top. The extrusion force gives the air a greater power when it is blown out, thereby increasing the cleaning effect. The power mechanism 3 provides a continuous supply of air to the interior of the air outlet plate 2, acting as a power device. The two connecting mechanisms 6 are located on both sides of the support plate 1, respectively, and restrict the two positioning rollers 7 so that the two positioning rollers 7 and the air outlet plate 2 are on the same plane and are flush with the hinge. The two positioning rollers 7 are used for two-point positioning, so that the air outlet plate 2 and the hinge are always aligned, which facilitates the air blowing. The thickness of the positioning rollers 7 gradually decreases from the center to the periphery, and the outermost edge is pointed so that it can be inserted into the hinge for limiting.

[0024] A rubber block 4 is slidably connected to the upper surface of the support plate 1. A limiting mechanism 5 is provided at the lower part of the rubber block 4 to prevent the rubber block 4 from falling off and to facilitate the rotation of the rubber block 4. The rubber block 4 is made of rubber and has a certain deformation and rebound ability. When it is necessary to blow air in one position for a period of time, the support plate 1 can be pushed upward, and the upper surface of the rubber block 4 will press against the hollow plate, thereby reducing the distance between the air outlet plate 2 and the hinge of the hollow plate. An opening is opened on one side of the rubber block 4. When in use, the air pressure at the opening is lower than that at other positions around the air outlet plate 2, which can make most of the air flow to the side of the opening, carrying the dust with it. Workers stand on the side away from the opening, thereby avoiding the dust directly impacting the human body. The rubber block 4 can be rotated by the limiting mechanism 5 to adjust the position of the opening.

[0025] The limiting mechanism 5 includes a limiting block 501, which is fixed to the lower surface of the rubber block 4. The inner wall of the support plate 1 is provided with a groove 502 for the rotation of the limiting block 501. The cross-sectional shape of the groove 502 and the limiting block 501 is T-shaped, so as to lock the limiting block 501 and prevent the rubber block 4 from separating from the support plate 1, while facilitating the rotation of the rubber block 4.

[0026] The power mechanism 3 includes a fan 301. The upper end of the fan 301 is connected to an air outlet pipe 302. The outer surface of the air outlet pipe 302 passes through the middle of the support plate 1 and connects upward to the air outlet plate 2. The fan 301 is equipped with a fan that can blow the air below it upward, so that the air enters the interior of the air outlet pipe 302 and then enters the interior of the air outlet plate 2, thereby creating a blowing effect.

[0027] The support mechanism 8 includes a base plate 801, and three round rods 802 are fixedly connected to the upper surface of the base plate 801. The upper ends of the round rods 802 are fixedly connected to the support plate 1, and the inner wall of the support plate 1 is fixedly connected to the fan 301. In use, the round rods 802 can be grasped to fix both the support plate 1 and the fan 301.

[0028] The connecting mechanism 6 includes a movable rod 601. One end of the movable rod 601 is hinged to the support plate 1, and the other end of the movable rod 601 is fixedly connected to a support block 602. The inner wall of the support block 602 is rotatably connected to the positioning roller 7. The support block 602 can swing up and down on the support plate 1, thereby changing the vertical height of the positioning roller 7 relative to the support plate 1.

[0029] A tension spring 9 is fixedly connected to the outer surface of the support plate 1. The end of the tension spring 9 away from the support plate 1 is fixedly connected to the movable rod 601. The tension spring 9 can exert a pulling force on the movable rod 601 as it approaches the support plate 1. Without the action of external force, the positioning roller 7 rotates upward, thereby squeezing the hinge gap.

[0030] The fan 301 in this application is a common electrical device in the prior art. This application will not elaborate on its model or internal structure. It can also be replaced by other power sources.

[0031] When using this invention: hold the device by hand and let the upper ends of the two positioning rollers 7 enter the hinge gap. The two positioning rollers 7 are used for two-point positioning, so that the air outlet plate 2 is always aligned with the hinge gap. The power mechanism 3 blows the air below into the interior of the air outlet plate 2, which facilitates the alignment of the air blowing. When moving, the positioning rollers 7 can rotate and move forward inside the hinge gap, so that the air outlet plate 2 is always aligned with the hinge gap during the movement, avoiding misalignment during the movement. No special adjustment is required, thus achieving the effect of avoiding misalignment.

[0032] When air needs to be blown in one position for a period of time, the support plate 1 can be pushed upwards to make the upper surface of the rubber block 4 press against the hollow plate, thereby reducing the distance between the air outlet plate 2 and the hinge of the hollow plate. An opening is opened on one side of the rubber block 4, which allows most of the air to flow to the side of the opening, carrying the dust with it. The worker stands on the side away from the opening, and the rubber block 4 can be rotated by the limiting mechanism 5 to adjust the position of the opening, thereby preventing the dust from directly impacting the human body.

[0033] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A prefabricated hollow slab beam bridge hinge joint reinforcement device, comprising a support plate (1), characterized in that: The inner bottom wall of the support plate (1) is provided with an air outlet plate (2) for blowing air to the hinge joint, the lower part of the air outlet plate (2) is provided with a power mechanism (3) for providing air flow, the outer surface of the support plate (1) is provided with two mirror image connecting mechanisms (6), the ends of the two connecting mechanisms (6) away from the air outlet plate (2) are provided with rotatable positioning rollers (7), the positioning rollers (7) are located inside the hinge joint and can rotate forward, the center of the positioning rollers (7) and the center of the air outlet plate (2) are located on the same vertical plane.

2. The precast hollow slab beam bridge hinge joint reinforcing device according to claim 1, characterized in that: The upper surface of the support plate (1) is slidably connected with a rubber block (4), the lower part of the rubber block (4) is provided with a limiting mechanism (5) for preventing the rubber block (4) from falling off and facilitating the rotation of the rubber block (4).

3. The precast hollow slab beam bridge hinge joint reinforcing device according to claim 2, characterized in that: The limiting mechanism (5) comprises a limiting block (501) fixed to the lower surface of the rubber block (4), and the inner wall of the support plate (1) is provided with a groove (502) for the rotation of the limiting block (501).

4. The precast hollow slab beam bridge hinge joint reinforcing device according to claim 1, characterized in that: The power mechanism (3) comprises a fan (301), the upper end of the fan (301) is connected with an air outlet pipe (302), the outer surface of the air outlet pipe (302) penetrates the middle part of the support plate (1) and is connected with the air outlet plate (2) upward.

5. The precast hollow slab beam bridge hinge joint reinforcing device according to claim 4, characterized in that: It also comprises a supporting mechanism (8), the supporting mechanism (8) comprises a bottom plate (801), the upper surface of the bottom plate (801) is fixedly connected with three round rods (802), the upper ends of the round rods (802) are fixedly connected with the support plate (1), and the inner wall of the support plate (1) is fixedly connected with the fan (301).

6. The precast hollow slab beam bridge hinge joint reinforcing device according to claim 1, characterized in that: The connecting mechanism (6) comprises a movable rod (601), one end of the movable rod (601) is hinged with the support plate (1), the other end of the movable rod (601) is fixedly connected with a supporting block (602), and the inner wall of the supporting block (602) is rotatably connected with the positioning roller (7).

7. The precast hollow slab beam bridge hinge joint reinforcing device according to claim 6, characterized in that: The outer surface of the support plate (1) is fixedly connected with a tension spring (9), one end of the tension spring (9) away from the support plate (1) is fixedly connected with the movable rod (601).

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