Repairing device and method for bridge crack

Abstract

The invention relates to the technical field of bridge repairing, in particular to a bridge crack repairing device and method.The repairing device comprises a pressing mechanism, a feeding mechanism, a gluing mechanism and a sliding block; after an operator loads a material reel with a sealing material into the feeding mechanism, the feeding mechanism is used for gluing the surface of one side of the gluing mechanism, then the included angle of the pressing mechanism is adjusted, the sealing material is sequentially pressed and attached to the cleaned crack surface, and then a pressing spring of the pressing mechanism is used for circularly pressing to assist in attaching; after the sealing material is firmly attached, the material passing pipe continues to be led into the crack, the slurry is pumped into the crack, the sealing material and burrs are polished after the slurry is completely dried, and repairing is completed, the equipment can effectively adapt to different bridge repairing positions, meanwhile, effective slurry filling is conducted, good practicability and economical efficiency are achieved, and application and popularization of the equipment are facilitated.

Description

Technical Field

[0001] This invention relates to the technical field of bridge repair, and specifically to a device and method for repairing bridge cracks. Background Technology

[0002] During use, bridge decks, bridge bases, and piers are prone to cracks due to age, climate, and other factors. Existing crack repair methods typically involve treating the cracks, applying resin adhesive to the crack surface, and then using a grouting tube to fill the cracks. However, the amount of resin adhesive used varies depending on the crack width, resulting in inconsistent filling amounts at different locations. This means that the cracks cannot be completely filled during the grouting process, leading to poor repair results. Furthermore, the resin adhesive ages quickly during subsequent use, failing to meet the required support. Additionally, the filling effect cannot be assessed during the resin adhesive filling process, making it prone to air leakage in some areas. Even if repairs are made, the sealing effect will be significantly reduced. Summary of the Invention

[0003] In order to solve the above-mentioned problems in the existing technology, the present invention aims to provide a bridge crack repair device and method with simple structure, which can repair different locations of the bridge deck and effectively perform crack grouting.

[0004] The technical solution adopted in this invention is as follows: a bridge crack repair device, including a pressing mechanism, the pressing mechanism including two sets of symmetrically arranged rotating shafts, two sets of rotating disks provided in the middle of the rotating shafts, the rotating shafts passing through and slidably connected to the rotating disks, a pressing spring provided between the two sets of rotating disks, and an adjusting member provided at one of the proximal ends of the two sets of rotating shafts, the adjusting member being used to adjust the expansion angle between the two sets of rotating shafts.

[0005] In one embodiment, the adjusting member includes a grooved sliding plate with a through movable groove in the middle. A fixing ring is provided at one end of the rotating shaft near the grooved sliding plate. A fixing bolt is provided inside the fixing ring. The fixing bolt passes through and is slidably connected to the movable groove. Fixing nuts are provided at both ends of the fixing bolt. The fixing nuts are rotatably connected to the fixing bolt.

[0006] In one embodiment, extension plates are provided at both ends of the rotating shaft, the rotating shaft passes through and is rotatably connected to the extension plates, and a push rod is provided between the two sets of extension plates to push the compression spring to move.

[0007] In one embodiment, the two sets of extension plates are provided with a feeding mechanism for providing sealing material. The feeding mechanism includes a limiting plate located on the side of the extension plate away from the axis of symmetry of the pressing mechanism. Conical blocks are provided on opposite sides of the two sets of limiting plates. The conical blocks pass through and are slidably connected to the center of the limiting plates. A positioning plate is located on the side of the limiting plate away from the conical blocks. The positioning plate is connected to the limiting plate by a support rod. A thrust spring is provided between the conical blocks and the positioning plate. The positioning plate is also provided with a positioning connecting rod, which is fixedly connected to the adjacent extension plates.

[0008] In one embodiment, the two sets of extension plates are further provided with cutting components for cutting wrapping materials. The cutting components include arc-shaped cutting protection plates, both ends of which are fixedly connected to adjacent extension plates. The rotating shaft is also provided with rotating rods at both ends, the rotating shaft passing through and rotatably connected to the rotating rods. An arc-shaped cutter is provided between the two sets of rotating rods. The arc-shaped cutter rotates on the rotating shaft and can abut against the outer arc surface of the arc-shaped cutting protection plate. The arc-shaped cutter is also provided with an abutting thrust rod. The abutting thrust rod has an L-shaped cross-section. One end of the abutting thrust rod is fixedly connected to the arc-shaped cutter, and the end of the abutting thrust rod away from the arc-shaped cutter is used to abut against the equipment support surface.

[0009] In one embodiment, the end face of the arc-shaped cutter facing the arc-shaped cutting protection plate is inclined, so as to gradually abut against the arc surface of the arc-shaped cutting protection plate from one end to cut the sealing material.

[0010] In one embodiment, an adhesive applicator is provided between the two sets of extension plates on the rotating shaft. The adhesive applicator includes an extension connecting plate located on one side of the extension plate. A rotating main shaft is provided between the two sets of extension connecting plates. An adhesive applicator roller is provided in the middle of the rotating main shaft. A liquid storage tank is provided on one side of the adhesive applicator roller. The side of the adhesive applicator roller passes into the inner cavity of the liquid storage tank. Box connecting rods are provided at both ends of the liquid storage tank. The box connecting rods are connected to adjacent extension connecting plates.

[0011] In one embodiment, a sliding guide rod is provided on the side of the arc-shaped cutting protection plate away from the equipment support surface. The two ends of the sliding guide rod are fixedly connected to the arc-shaped cutting protection plate by connecting blocks. A sliding block is provided in the middle of the sliding guide rod. A through groove is provided in the middle of the sliding block. Anti-interference notches are provided on the near ends of the two sets of sliding blocks to facilitate the two sets of sliding blocks to move towards each other.

[0012] In one embodiment, a method for repairing bridge cracks is also included, the specific method of which is as follows: S1. Clean the cracks in the bridge and break up any easily cracked structures at the edges; S2. After processing part of the sealing material, apply it laterally to both sides of the crack and mark one point of the crack; S3. After processing another sealing material, guide and limit one side along the marked point, and press the upper sealing material along the crack direction on the other side to fit; S4. Repeat multiple sets until all crack areas are completely covered. Insert the feed tube at several marked points and seal the edges. After curing, test the sealing performance. S5. After the sealing performance is qualified, the grout is introduced into one of the feed pipes until the grout overflows from the other feed pipes. Then, let it stand and repeat the grouting process several times. S6. After the slurry has completely dried, polish the sealant and the rough surface of the slurry to complete the repair.

[0013] In one embodiment, in step S3, the bonding direction is either parallel overlap or staggered overlap.

[0014] The beneficial effects of this invention are as follows: This invention provides a simple structural device and method for repairing bridge cracks at different locations on the bridge deck, and also effectively achieves grouting for crack filling. The specific implementation method is as follows: The operator first winds the sealing material onto the material roll. Then, the conical blocks at both ends of the material roll press against the inclined surfaces of the push springs, causing the conical blocks to pass into the material roll and secure it. Next, the sealing material is passed over the surface of the applicator roller and falls through the gap between the curved cutter and the curved cutting protective plate, landing under the pressure spring. The bonding process then begins: Holding the push lever with both hands causes one of the pressure springs to abut against the sealing material's bonding surface. The rotating shaft then rolls along the required bonding surface, causing the pressure spring to press the sealing material. To seal the gap, during the movement of the sealing material, the adhesive liquid in the storage tank is applied to the sealing material by the adhesive roller. After reaching the bonding position, the rotating shaft away from the bonding end is tilted up along the rotating shaft of the bonding end, so that the abutting push rod abuts the required bonding surface. Then, it continues to rotate and tilt up. The abutting push rod drives the arc-shaped cutter to rotate along the axis of the rotating shaft, so that the sealing material between the arc-shaped cutting protection plate and the arc-shaped cutter is cut at the abutting point, thus breaking the sealing material. Afterwards, the reciprocating movement of the pressure spring assists in pressing and bonding. Before applying the lower sealing material, move the equipment to the initial pressing position and move the sliding block on the sliding guide rod so that the intersection of the through grooves of the two sets of sliding blocks is the crack. Mark the through hole between the through grooves of the two sets of sliding blocks. When applying the lower sealing material, press the marked area on one side of the sealing material. Repeat the above process until it is completely applied. The sealing material is pressed by the other sealing material, which makes it fit the crack surface better and has better compressive strength, which is convenient for grouting. After the applied sealant has cured and completely adhered to all crack areas, insert grouting pipes at several marked points and perform edge sealing. Each crack must have at least one injection grouting pipe, one venting grouting pipe, and one outlet grouting pipe. After curing, such as waiting for the adhesive to dry completely or heating to ensure the sealant fully adheres to the crack surface, test the sealing performance. Before leak testing, apply a layer of soapy water to the crack and introduce compressed air through the grouting pipes. Any leaks should be repaired and sealed until there is no leakage. After the sealing performance is qualified, grout is introduced into one of the grouting pipes until grout overflows from the remaining pipes. Let it stand and repeat the injection process. For bridge decks, multiple grouting pipes can be used simultaneously to deliver grout until the bridge is full. After grout overflows from the outlet pipes, the pipes are sealed. For bridge piers, grouting should be carried out from bottom to top. After the sealing performance is qualified, grout is introduced into one of the outlet pipes until grout overflows from the remaining pipes. Then, the pipes are left to stand. This process is repeated multiple times. For bridge decks, multiple grouting pipes can be used simultaneously to deliver grout until the bridge is full. After grout overflows from the outlet pipes, the pipes are sealed. For bridge piers, grouting should be carried out from bottom to top. After the grout is completely dry, the sealing material and the rough surface of the grout are polished to complete the repair.

[0015] Meanwhile, since some cracks are located in the curved areas such as bridge piers, the curvature can cause the compression spring to bend during the bonding process, achieving the same pressing effect. The pressing and cutting process described above can be repeated.

[0016] Because the width of the cracks varies at different locations, the sealant needs to withstand different pressures during grout filling. In areas with smaller cracks, parallel overlapping arrangements can be used, while in areas with larger cracks, staggered overlapping arrangements can be used. If parallel overlapping textures are required, a single pressure spring on one side can be used; otherwise, two sets of pressure springs can be used to press alternately. In order to improve the bonding strength of staggered overlapping, the rotating shaft can be rotated before pressing to change the angle and spacing between the two sets of rotating shafts. After tightening the fixing nut with the fixing bolt that is movable in the groove sliding plate, the angle and pressing length during alternating left and right pressing can be changed, thereby increasing the bonding area, enhancing the bonding ability, and facilitating pressure resistance.

[0017] This equipment has a simple structure and effectively utilizes the bending of the compression spring to achieve effective bonding of cracks in multiple areas. At the same time, it uses a shear structure in conjunction with a sliding block to match different bonding methods for cracks of different widths, ensuring that it will not fall off during pressure grouting. It effectively achieves complete grouting of cracks, has good practicality and economy, and is beneficial to the promotion and use of the equipment. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the pressing mechanism of the present invention; Figure 3 This is a three-dimensional structural diagram of the adhesive coating mechanism of the present invention; Figure 4 This is a three-dimensional structural diagram of the three-dimensional structure of the present invention; Figure 5 This is a three-dimensional structural diagram of the sliding block of the present invention; Figure 6 This is a three-dimensional structural diagram of the feeding mechanism of the present invention.

[0020] Reference numerals: 1. Pressing mechanism; 11. Rotating shaft; 111. Fixing ring; 112. Groove sliding plate; 1121. Movable groove; 113. Fixing nut; 114. Fixing bolt; 12. Rotating disk; 13. Arc-shaped cutting protection plate; 131. Sliding guide rod; 132. Connecting block; 133. Sliding block; 134. Anti-interference notch; 135. Through groove; 14. Extension plate; 15. Push rod; 16. Pressing spring; 2. Feeding mechanism; 21. Conical block; 211. Thrust spring; 22. Limiting plate; 23. Positioning plate; 231. Positioning connecting rod; 25. Material roll; 3. Glue application mechanism; 31. Rotating rod; 32. Arc-shaped cutter; 33. Abutting thrust rod; 34. Liquid storage tank; 341. Box connecting rod; 35. Glue application roller; 36. Extension connecting plate; 361. Rotating spindle. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] The following is combined with Figure 1-6The following describes a specific embodiment of the present invention: a bridge crack repair device, comprising a pressing mechanism 1. The pressing mechanism 1 includes two sets of symmetrically arranged rotating shafts 11. Two sets of rotating disks 12 are provided in the middle of the rotating shafts 11. The rotating shafts 11 pass through and are slidably connected to the rotating disks 12. A pressing spring 16 is provided between the two sets of rotating disks 12. The circumferential diameter of the pressing spring 16 can be larger than that of the rotating disks 12. The pressing spring 16 has a large number of spirals. The attached drawings adopt a simple drawing method, mainly showing its installation position. An adjusting member is provided at one of the near ends of the two sets of rotating shafts 11. The adjusting member is used to adjust the expansion angle between the two sets of rotating shafts 11.

[0024] Beneficially, the adjusting component includes a grooved sliding plate 112, with a through movable groove 1121 in the middle of the grooved sliding plate 112. A fixing ring 111 is provided at one end of the rotating shaft 11 near the grooved sliding plate 112. A fixing bolt 114 is provided inside the fixing ring 111. The fixing bolt 114 is inserted into and slidably connected to the movable groove 1121. Fixing nuts 113 are provided at both ends of the fixing bolt 114. The fixing nuts 113 are rotatably connected to the fixing bolt 114.

[0025] Advantageously, extension plates 14 are provided at both ends of the rotating shaft 11, through which the rotating shaft 11 passes and is rotatably connected to the extension plates 14. A push rod 15 is provided between the two sets of extension plates 14 to push the compression spring 16 to move. Advantageously, a feeding mechanism 2 is provided on the two sets of extension plates 14. The feeding mechanism 2 is used to provide sealing material, such as asphalt cloth, polypropylene cloth, etc., which can be determined according to the actual crack width and repair location. The feeding mechanism 2 includes a limiting plate 22 located on the side of the extension plate 14 away from the axis of symmetry of the compression mechanism 1. The two sets of limiting plates 2 A conical block 21 is provided on the opposite side of 2. The conical block 21 passes through and is slidably connected to the center of the limiting plate 22. The side of the limiting plate 22 away from the conical block 21 is provided on the positioning plate 23. The positioning plate 23 is connected to the limiting plate 22 by a support rod. A thrust spring 211 is provided between the conical block 21 and the positioning plate 23. The material roll 25 with sealing material can be clamped between the two sets of conical blocks by pressing the thrust spring 211, which is convenient for pulling out. The positioning plate 23 is also provided with a positioning connecting rod 231, which is fixedly connected to the adjacent extension plate 14.

[0026] Beneficially, the two sets of extension plates 14 are also equipped with cutting components for cutting the wrapping material. The cutting components include an arc-shaped cutting protection plate 13, with both ends of the arc-shaped cutting protection plate 13 fixedly connected to the adjacent extension plates 14. Rotating shaft 11 is also equipped with rotating rods 31 at both ends, with the rotating shaft 11 passing through and rotatably connected to the rotating rods 31. An arc-shaped cutter 32 is provided between the two sets of rotating rods 31. The arc-shaped cutter 32 rotates with the rotating shaft 11 and can abut against the outer arc surface of the arc-shaped cutting protection plate 13. The arc-shaped cutter 32 is also equipped with a thrust rod 33 for abutting... The thrust rod 33 has an L-shaped cross-section. One end of the thrust rod 33 is fixedly connected to the arc-shaped cutter 32, and the other end of the thrust rod 33 away from the arc-shaped cutter 32 is used to abut against the equipment support surface. Specifically, the end face of the arc-shaped cutter 32 facing the arc-shaped cutting protection plate 13 is inclined, so that it gradually abuts against the arc surface of the arc-shaped cutting protection plate 13 from one end, forming a structure similar to arc-shaped scissors to cut the sealing material. At the same time, the sealing material can also be pre-segmented and wrapped in the material roll 25.

[0027] In practice, the rotating shaft 11 away from the bonding end is tilted up along the rotating shaft 11 of the bonding end, so that after the abutting push rod 33 abuts the required bonding surface, it continues to rotate and tilt up. The abutting push rod 33 drives the arc-shaped cutter 32 to rotate along the axis of the rotating shaft 11, so that the sealing material between the arc-shaped cutting protection plate 13 and the arc-shaped cutter 32 is cut at the abutting point, thus achieving the breaking of the sealing material.

[0028] Beneficially, a glue-applying mechanism 3 is also provided between the two sets of extension plates 14 on the rotating shaft 11. The glue-applying mechanism 3 includes an extension connecting plate 36 located on one side of the extension plate 14. A rotating main shaft 361 is provided between the two sets of extension connecting plates 36. A glue-applying roller 35 is provided in the middle of the rotating main shaft 361. A liquid storage tank 34 is provided on one side of the glue-applying roller 35. The liquid storage tank 34 can be a covered tank or an open tank, depending on the location of the equipment being repaired, such as a bridge deck or pier. When the equipment is placed horizontally, it can be open. When it is placed vertically, it can be closed for easy application. When it is closed, attention should be paid to the amount of glue added to avoid missing glue application. The side of the glue-applying roller 35 is inserted into the inner cavity of the liquid storage tank 34. The two ends of the liquid storage tank 34 are provided with a tank body connecting rod 341, which is connected to the adjacent extension connecting plate 36.

[0029] Beneficially, a sliding guide rod 131 is provided on the side of the arc-shaped cutting protection plate 13 away from the equipment support surface. The two ends of the sliding guide rod 131 are fixedly connected to the arc-shaped cutting protection plate 13 by connecting blocks 132. A sliding block 133 is provided in the middle of the sliding guide rod 131. A through groove 135 is provided in the middle of the sliding block 133. Anti-interference notches 134 are provided on the near ends of the two sets of sliding blocks 133 to facilitate the two sets of sliding blocks 133 to move towards each other, forming a scissor-like effect to cut the sealing material.

[0030] Also beneficial is a method for repairing bridge cracks, the specific method of which is as follows: S1. Clean the cracks in the bridge and break up any easily cracked structures at the edges; S2. After applying some sealant, apply it laterally to both sides of the crack and mark one point of the crack. Use a wire brush to clean the concrete surface within a certain width along the crack, carefully removing cement slag, moss, and dust. For areas with poor concrete surface quality and many fine cracks on both sides of the crack, clean to a width of 8-10cm. Use a hammer and chisel to remove loose concrete blocks and sand on both sides, exposing a solid concrete surface. Continue to wipe the concrete surface with acetone or alcohol to clean away oil and dust. S3. After processing another sealing material, guide and limit one side along the marked point, and press the upper sealing material along the crack direction on the other side to fit; S4. Repeat multiple sets until all crack areas are completely covered. Insert the grouting tubes at several marked points and seal the edges. Each crack must have at least one grouting tube, an air venting tube, and a grout outlet tube. After curing, such as waiting for the glue to dry completely or heating to allow the sealant to completely adhere to the crack surface, test the sealing performance. Before leak testing, apply a layer of soapy water to the crack and introduce compressed air through the grouting tubes. Any leaks should be repaired and sealed until there are no leaks. S5. After the sealing performance is qualified, the grout is introduced into one of the feed pipes until the grout overflows from the other feed pipes. After that, it is left to stand and the grouting is repeated several times. When it is on the bridge deck, multiple sets of grouting feed pipes can be used to transport materials at the same time until the grouting is full. After the grout overflows from the feed pipe, the multiple sets of feed pipes are sealed. When it is on the bridge pier, the grouting should be carried out in the order from bottom to top.

[0031] S6. After the slurry has completely dried, polish the sealant and the rough surface of the slurry to complete the repair.

[0032] Beneficially, in step S3, the bonding direction is either parallel overlap or staggered overlap, depending on the bonding gap.

[0033] Working principle of this invention: The operator first winds the sealing material onto the material roll 25, then presses the tapered blocks at both ends of the material roll 25 to squeeze the push spring 211, causing the tapered blocks to pass into the material roll 25 and be fixed. Afterwards, the sealing material is passed over the surface of the coating roller 35 and continues to fall through the gap between the arc-shaped cutter 32 and the arc-shaped cutting protection plate 13, falling below the pressure spring 16, and the bonding process can begin. The operator holds the push rod 15 with both hands, causing one of the pressure springs 16 to abut against the bonding surface of the sealing material. The rotating shaft 11 rolls along the required bonding surface, causing the pressure spring 16 to press the sealant. When the material is bonded to the crack, during the movement of the sealing material, the adhesive liquid in the storage tank 34 is applied to the sealing material by the adhesive roller 35. After reaching the bonding position, the rotating shaft 11 away from the bonding end is tilted up along the rotating shaft 11 of the bonding end, so that the abutting push rod 33 abuts against the required bonding surface. Then, it continues to rotate and tilt up. The abutting push rod 33 drives the arc-shaped cutter 32 to rotate along the axis of the rotating shaft 11, so that the sealing material between the arc-shaped cutting protection plate 13 and the arc-shaped cutter 32 is cut at the abutting point, thus breaking the sealing material. Afterwards, the reciprocating pressure spring 16 assists in pressing and bonding. Before applying the lower sealing material, move the equipment to the initial pressing position and move the sliding block 133 on the sliding guide rod 131 so that the intersection of the through groove 135 of the two sets of sliding blocks 133 is the crack. Mark the through hole between the through groove 135 of the two sets of sliding blocks 133. When applying the lower sealing material, press the marked area on one side of the sealing material. Repeat the above process until it is completely applied. The sealing material is pressed by the other sealing material, which makes it fit the crack surface better and has better compressive strength, which is convenient for grouting. After the applied sealant has cured and completely adhered to all crack areas, insert grouting pipes at several marked points and perform edge sealing. Each crack must have at least one injection grouting pipe, one venting grouting pipe, and one outlet grouting pipe. After curing, such as waiting for the adhesive to dry completely or heating to ensure the sealant fully adheres to the crack surface, test the sealing performance. Before leak testing, apply a layer of soapy water to the crack and introduce compressed air through the grouting pipes. Any leaks should be repaired and sealed until there is no leakage. After the sealing performance is qualified, grout is introduced into one of the grouting pipes until grout overflows from the remaining pipes. Let it stand and repeat the injection process. For bridge decks, multiple grouting pipes can be used simultaneously to deliver grout until the bridge is full. After grout overflows from the outlet pipes, the pipes are sealed. For bridge piers, grouting should be carried out from bottom to top. After the sealing performance is qualified, grout is introduced into one of the outlet pipes until grout overflows from the remaining pipes. Then, the pipes are left to stand. This process is repeated multiple times. For bridge decks, multiple grouting pipes can be used simultaneously to deliver grout until the bridge is full. After grout overflows from the outlet pipes, the pipes are sealed. For bridge piers, grouting should be carried out from bottom to top. After the grout is completely dry, the sealing material and the rough surface of the grout are polished to complete the repair.

[0034] Meanwhile, since some of the cracks are located in the curved areas such as bridge piers, the curvature can cause the compression spring 16 to bend during the bonding process, achieving the same pressing effect. The pressing and cutting process described above can be repeated.

[0035] Since the sealing material needs to withstand different pressures when filling the cracks, parallel overlapping arrangements can be used in areas with smaller cracks, while staggered overlapping arrangements can be used in areas with larger cracks. If it is necessary to fit the parallel overlapping texture, a single pressure spring 16 can be used on one side, while two sets of pressure springs 16 can be used alternately for pressing. At the same time, in order to better improve the bonding strength of the staggered overlapping, the rotating shaft 11 can be rotated before pressing to change the included angle and spacing between the two sets of rotating shafts 11. After tightening the fixing nut 113 with the fixing bolt 114 of the movable groove 1121 in the groove sliding plate 112 for positioning, the angle and pressing length during the alternating left and right pressing can be changed, thereby increasing the bonding area, enhancing the bonding ability, and facilitating pressure resistance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the invention or the scope defined by the claims of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A bridge crack repair device, characterized in that: The device includes a pressing mechanism (1), which includes two sets of symmetrically arranged rotating shafts (11). Two sets of rotating disks (12) are provided in the middle of the rotating shafts (11). The rotating shafts (11) pass through and are slidably connected to the rotating disks (12). A pressing spring (16) is provided between the two sets of rotating disks (12). An adjusting member is provided at one of the near ends of the two sets of rotating shafts (11). The adjusting member is used to adjust the expansion angle between the two sets of rotating shafts (11).

2. The bridge crack repair device according to claim 1, characterized in that: The adjusting component includes a grooved sliding plate (112), the grooved sliding plate (112) has a through movable groove (1121) in the middle, the rotating shaft (11) has a fixing ring (111) at one end near the grooved sliding plate (112), the fixing ring (111) has a fixing bolt (114) inside, the fixing bolt (114) is inserted into and slidably connected to the movable groove (1121), the fixing bolt (114) has fixing nuts (113) at both ends, and the fixing nuts (113) are rotatably connected to the fixing bolt (114).

3. The bridge crack repair device according to claim 1, characterized in that: The rotating shaft (11) has extension plates (14) at both ends. The rotating shaft (11) passes through and is rotatably connected to the extension plates (14). A push rod (15) is provided between the two sets of extension plates (14) to push the compression spring (16) to move.

4. The bridge crack repair device according to claim 3, characterized in that: The two sets of extension plates (14) are provided with a feeding mechanism (2), which is used to provide sealing material. The feeding mechanism (2) includes a limiting plate (22) located on the side of the extension plate (14) away from the axis of symmetry of the pressing mechanism (1). The two sets of limiting plates (22) are provided with conical blocks on opposite sides. The conical blocks (21) pass through and are slidably connected to the center of the limiting plate (22). The limiting plate (22) away from the conical blocks (21) is provided with a positioning plate (23). The positioning plate (23) is connected to the limiting plate (22) by a support rod. A thrust spring (211) is provided between the conical blocks (21) and the positioning plate (23). The positioning plate (23) is also provided with a positioning connecting rod (231), which is fixedly connected to the adjacent extension plate (14).

5. The bridge crack repair device according to claim 3, characterized in that: The two sets of extension plates (14) are also provided with cutting components for cutting wrapping materials. The cutting components include arc-shaped cutting protection plates (13). The two ends of the arc-shaped cutting protection plates (13) are fixedly connected to the adjacent extension plates (14). The two ends of the rotating shaft (11) are also provided with rotating rods (31). The rotating shaft (11) passes through and is rotatably connected to the rotating rods (31). An arc-shaped cutter (32) is provided between the two sets of rotating rods (31). The arc-shaped cutter (32) rotates on the rotating shaft (11) and can abut against the outer arc surface of the arc-shaped cutting protection plate (13). The arc-shaped cutter (32) is also provided with abutting thrust rod (33). The abutting thrust rod (33) has an L-shaped cross-section. One end of the abutting thrust rod (33) is fixedly connected to the arc-shaped cutter (32). The end of the abutting thrust rod (33) away from the arc-shaped cutter (32) is used to abut against the equipment support surface.

6. The bridge crack repair device according to claim 5, characterized in that: The end face of the arc-shaped cutter (32) facing the arc-shaped cutting protection plate (13) is inclined, so as to gradually abut against the arc surface of the arc-shaped cutting protection plate (13) from one end of the arc-shaped cutting protection plate (13) to cut the sealing material.

7. The bridge crack repair device according to claim 5, characterized in that: A glue-applying mechanism (3) is also provided between the two sets of extension plates (14) on the rotating shaft (11). The glue-applying mechanism (3) includes an extension connecting plate (36) located on one side of the extension plate (14). A rotating spindle (361) is provided between the two sets of extension connecting plates (36). A glue-applying roller (35) is provided in the middle of the rotating spindle (361). A liquid storage tank (34) is provided on one side of the glue-applying roller (35). The side of the glue-applying roller (35) passes into the inner cavity of the liquid storage tank (34). A tank connecting rod (341) is provided at both ends of the liquid storage tank (34). The tank connecting rod (341) is connected to the adjacent extension connecting plate (36).

8. The bridge crack repair device according to claim 6, characterized in that: The arc-shaped cutting protection plate (13) is provided with a sliding guide rod (131) on the side away from the equipment support surface. The two ends of the sliding guide rod (131) are fixedly connected to the arc-shaped cutting protection plate (13) by connecting blocks (132). The sliding guide rod (131) is provided with a sliding block (133) in the middle. The sliding block (133) is provided with a through groove (135) in the middle. The two sets of sliding blocks (133) are provided with anti-interference notches (134) on the near ends to facilitate the two sets of sliding blocks (133) to move towards each other.

9. A method for repairing bridge cracks, using the bridge crack repair device as described in any one of claims 1-8, characterized in that: The specific method is as follows: S1. Clean the cracks in the bridge and break up any easily cracked structures at the edges; S2. After processing part of the sealing material, apply it laterally to both sides of the crack and mark one point of the crack; S3. After processing another sealing material, guide and limit one side along the marked point, and press the upper sealing material along the crack direction on the other side to fit; S4. Repeat multiple sets until all crack areas are completely covered. Insert the feed tube at several marked points and seal the edges. After curing, test the sealing performance. S5. After the sealing performance is qualified, the grout is introduced into one of the feed pipes until the grout overflows from the other feed pipes. Then, let it stand and repeat the grouting process several times. S6. After the slurry has completely dried, polish the sealant and the rough surface of the slurry to complete the repair.

10. The method for repairing bridge cracks according to claim 9, characterized in that: In step S3, the bonding direction is either parallel overlap or staggered overlap.

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