Noise reduction self-cleaning bridge expansion device and installation method

Abstract

This invention relates to the field of bridge expansion joints, and particularly to a noise-reducing self-cleaning bridge expansion joint device and its installation method. The expansion joint device includes a fixed side beam (7) and a sliding side beam (4) obtained by cutting π-shaped steel; each of the fixed side beam (7) and the sliding side beam (4) includes interlocking teeth cut from π-shaped steel; a fixed plate (6) is fixed on the fixed side beam (7) via a stepped surface; a sliding plate (5) is fixed on the sliding side beam (4) via a stepped surface; the fixed plate (6) and the sliding plate (5) are arranged vertically and can slide relative to each other; the fixed side beam (7) includes an inclined surface above it, which is a guide slope; when a concrete anti-crack anchor plate (10) is used, a concrete anti-crack steel plate (20) is welded above the anti-crack anchor plate at a position flush with the bridge deck, and the concrete anti-crack steel plate (20) has a grid structure; the above structure can protect the post-cast concrete from cracking, enhance durability, and reduce the frequency of maintenance.

Description

Technical Field

[0001] This invention relates to the field of bridge expansion joints, and more particularly to a noise-reducing self-cleaning bridge expansion joint device and its installation method. Background Technology

[0002] With the development of my country's transportation industry, traffic flow and vehicle load are increasing day by day, and with the increasing frequency of extreme weather events, more and more expansion joints are frequently damaged.

[0003] One important reason is that there are too many holes or bolt holes in the expansion joints, and there is no cover for them.

[0004] However, the problem is that the comb teeth are still exposed. In terms of technological development, if a plate-like structure could be used to easily cover the area without affecting expansion and contraction, it would undoubtedly protect the service life of the expansion joint device.

[0005] Meanwhile, the workers on site also discovered the following technical problems: the installation of waterstops requires complex manual labor, and it is not easy to replace the installed waterstops. Sometimes it is necessary to chisel through the cement to replace them.

[0006] In other words, there are two main technical problems: 1. The surface is not covered and is not manufactured as a whole, with too many bolt holes, making it easy to be damaged; 2. There is no highly automated device that can replace and install the waterstop with reduced manpower. Summary of the Invention

[0007] Purpose of the invention: To provide a more effective noise-reducing self-cleaning bridge expansion joint and installation method. Specific objectives are detailed in the specific implementation section, which describes several substantial technical effects.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: The first set of solutions: combining Figures 1 to 13 Of course, you can also combine all the attached diagrams.

[0009] A noise-reducing self-cleaning bridge expansion joint, characterized in that the expansion joint comprises a fixed side beam obtained by cutting a first single side of a π-shaped steel and a sliding side beam obtained by cutting a second single side of a π-shaped steel. Both the fixed side beam 7 and the sliding side beam 4 contain interlocking teeth cut from π-shaped steel. A fixing plate 6 is fixed to the fixed edge beam 7 via the stepped surface; A sliding plate 5 is fixed on the sliding side beam 4 via a stepped surface; The fixed plate 6 and the sliding plate 5 are arranged vertically and can slide relative to each other; The π-shaped steel is not symmetrical on the left and right sides. Its left side is the first single side 1 and its right side is the second single side 7. A cut groove is provided on the top of the π-shaped steel. The groove has stepped surfaces on both the first single side 1 and the second single side 7. The second single side 7 includes an inclined surface above it, which is a guide slope. Fixed side beam 7 and sliding side beam 4 are installed on both sides of the expansion joint; The subsequent options are any one of the following: A. The fixed side beam 7 and the sliding side beam 4 each include a back bend for bonding with the anchor plate 3 and the concrete. The shape of the end of the anchor plate 3 can fit with the back bend. The anchor plate 3 includes a hole for the longitudinal steel bar 1 to pass through. The longitudinal steel bar 1 passes through the embedded steel bar 2. The embedded steel bar 2 is a ring of steel bars with an opening at the bottom. B. Both the fixed side beam 7 and the sliding side beam 4 include a back bend for bonding with the concrete anti-crack anchor plate 10 and the concrete. When the concrete anti-crack anchor plate 10 is used, a concrete anti-crack steel plate 20 is welded above the anti-crack anchor plate at a position flush with the bridge deck. The concrete anti-crack steel plate 20 has a grid structure. The above structure can protect the post-cast strip concrete from cracking, enhance durability, and reduce the frequency of maintenance.

[0010] A further technical solution of the present invention is that the sliding plate 9 includes a plurality of dust removal holes 11.

[0011] A further technical solution of the present invention is that the sliding plate 5 is arranged above the fixed plate 6, and when the telescopic device extends and retracts longitudinally, the sliding plate 5 can push the dust along the surface of the fixed plate 6.

[0012] A further technical solution of the present invention is that an inclined pushing portion 19 is arranged at the end of the sliding plate 5.

[0013] A further technical solution of the present invention is that a waterstop groove 8 is arranged on each of the fixed side beam 7 and the sliding side beam 4, the waterstop groove 8 is welded to the fixed side beam 7 and the sliding side beam 4, and also includes a replaceable waterstop 9 that can be installed on the waterstop groove 8.

[0014] A further technical solution of the present invention is that it also includes a forward and reverse rotation replacement device specifically for installing and replacing the replaceable waterstop 9; The forward and reverse switching device includes a bridge deck fixing plate 11, and a bonding surface 18 is arranged on the lower surface of the bridge deck fixing plate 11, which can cover the bridge deck. A forward and reverse motor 14 is fixed below the bridge deck fixing plate 11 by a block. The shaft of the forward and reverse motor 14 is a motor shaft 13. A drive gear 12 is arranged at the end of the motor shaft 13. The drive gear 12 meshes with the forward and reverse rack 15. A rack edge limiting plate 16 is installed downward on the bridge deck fixing plate 11. The rack edge limiting plate 16 has a hole at its bottom for engaging the rack limiting protrusion 178. A rack limiting protrusion 178 is arranged on each of the two sides of the forward and reverse rack 15. A waterstop end is arranged at the end of the forward and reverse rack 15. The fixing part 17 includes a threaded shaft 172 that passes through a hole in the rack end 173. A rotatable block 174 is integrally connected below the threaded shaft 172. Two clamping devices are arranged on the rotatable block 174. The clamping devices include two parallel plates 176. The gap between the two parallel plates 176 is the clamping space 177. Threaded holes are arranged on the upper plate 176 for passing through the extrusion bolt 175. The replaceable waterstop 9 can be clamped by the clamping space 177. A rotating part 171 is arranged on the threaded shaft 172. The rotating part 171 rotates on the threaded shaft 172 and presses downward against the rack end 173, thereby fixing the rotatable block 174.

[0015] A further technical solution of the present invention is that the bridge deck fixing plate 11 includes multiple sets, and the advancing and retracting rack 15 can advance and retract along the holes included below the rack edge limiting plate 16.

[0016] A further technical solution of the present invention is that the waterstop groove 8 is any one of the following shapes: circular, semi-circular, elliptical, triangular, rectangular, and hook-shaped; the end structure cross-section of the replaceable waterstop 9 is any one of the following shapes: hollow circular, solid circular, elliptical, triangular, semi-circular, rectangular, and hook-shaped; wherein the middle of the end of the solid circular replaceable waterstop 9 is wrapped with a rigid columnar body; the waterstop groove 8 is made of steel, and the replaceable waterstop 9 is any one of the following materials: ductile rubber, plastic, and stainless steel plate.

[0017] A method for installing a noise-reducing self-cleaning bridge expansion joint, characterized in that it employs any of the noise-reducing self-cleaning bridge expansion joints described above, and includes the following steps; Includes installation; The installation steps are as follows: The first step of installation is to cover the bridge deck fixing plate 11 with the bonding surface 18. Rotate the rotating part 171 to loosen it, rotate the rotatable block 174 to make it horizontal. Then, the replaceable waterstop 9 is fixed by the clamping space 177 and the extrusion bolt 175. The end of the replaceable waterstop 9 is inserted into the waterstop slot 8. The second step of installation involves turning on the forward and reverse motor 14. The motor shaft 13 rotates, driving the drive gear 12. The drive gear 12 rotates, driving the rack 15 to move along the edge of the rack and the hole included below the limiting plate 16 toward the other side of the bridge, thereby moving the entire replaceable waterstop 9 to the other side of the bridge. Once in place, the forward and reverse motor 14 stops. Then, a person walks to the other side of the bridge and loosens the clamping bolt 175. Then, the rotatable block 174 is loosened and rotated so that its body is arranged along the expansion joint. Then, the rotatable block 174 is used to fix it so that the positions of the rotatable block 174 and the replaceable waterstop 9 do not conflict. The third step of installation involves turning on the forward and reverse motor 14 in the opposite direction. The forward and backward rack 15 retracts to its original position along the space above the replaceable waterstop 9. The forward and reverse motor 14 is remotely controlled throughout the process.

[0018] A further technical solution of the present invention includes a replacement step, wherein the replacement step involves first removing and then installing. The demolition steps are as follows: First step of removal: The bonding surface 18 of the bridge deck fixing plate 11 can cover the bridge deck. Rotate the rotatable block 174 so that its body is arranged along the expansion joint. Then fix it with the rotatable block 174 so that the position of the rotatable block 174 and the replaceable waterstop 9 does not conflict. The second step of dismantling: Turn on the forward and reverse motor 14. The motor shaft 13 rotates, driving the drive gear 12. The drive gear 12 rotates, driving the forward and backward rack 15 to move along the hole included below the rack edge limiting plate 16 towards the other side of the bridge. After reaching the other side of the bridge, the forward and reverse motor 14 stops. Then, a person walks to the other side of the bridge and rotates the rotatable block 174 to make its body horizontal. Then, the old replaceable waterstop 9 that needs to be replaced is fixed and clamped using the compression bolt 175 and the clamping space 177. The third step of dismantling: turn on the forward and reverse motor 14 in the opposite direction, and the forward and backward rack 15 will return to its original position along the space above the replaceable waterstop 9. During the whole process, the forward and reverse motor 14 is remotely controlled, and the old replaceable waterstop 9 that needs to be replaced is pushed out of the waterstop slot 8. At this point, remove the old replaceable waterstop 9 and adopt the new installation procedure.

[0019] Second series of solutions: A waterstop installation structure for a noise-reducing, self-cleaning bridge expansion joint, characterized in that... Includes a forward and reverse reversible replacement device specifically for installing and replacing the replaceable waterstop 9; The forward and reverse switching device includes a bridge deck fixing plate 11, and a bonding surface 18 is arranged on the lower surface of the bridge deck fixing plate 11, which can cover the bridge deck. A forward and reverse motor 14 is fixed below the bridge deck fixing plate 11 by a block. The shaft of the forward and reverse motor 14 is a motor shaft 13. A drive gear 12 is arranged at the end of the motor shaft 13. The drive gear 12 meshes with the forward and reverse rack 15. A rack edge limiting plate 16 is installed downward on the bridge deck fixing plate 11. The rack edge limiting plate 16 has a hole at its bottom for engaging the rack limiting protrusion 178. A rack limiting protrusion 178 is arranged on each of the two sides of the forward and reverse rack 15. A waterstop end is arranged at the end of the forward and reverse rack 15. The fixing part 17 includes a threaded shaft 172 that passes through a hole in the rack end 173. A rotatable block 174 is integrally connected below the threaded shaft 172. Two clamping devices are arranged on the rotatable block 174. The clamping devices include two parallel plates 176. The gap between the two parallel plates 176 is the clamping space 177. Threaded holes are arranged on the upper plate 176 for passing through the extrusion bolt 175. The replaceable waterstop 9 can be clamped by the clamping space 177. A rotating part 171 is arranged on the threaded shaft 172. The rotating part 171 rotates on the threaded shaft 172 and presses downward against the rack end 173, thereby fixing the rotatable block 174.

[0020] A further technical solution of the present invention is that the waterstop groove 8 is any one of the following: circular, semi-circular, elliptical, triangular, rectangular, or hook-shaped.

[0021] A further technical solution of the present invention is that the end structure cross-section of the replaceable waterstop 9 is any one of hollow circle, solid circle, ellipse, triangle, semicircle, rectangle, or hook shape.

[0022] A further technical solution of the present invention is that a rigid columnar body is wrapped around the middle of the end of the solid circular replaceable waterstop 9. A further technical solution of the present invention is that the waterstop groove 8 is made of steel. A further technical solution of the present invention is that the replaceable waterstop 9 is any one of rubber, plastic, or stainless steel plate with extensibility.

[0023] A further technical solution of the present invention is that the forward and reverse motor 14 is connected to a storage battery or mains power that can supply power to it.

[0024] The present invention, employing the above technical solution, has the following advantages over the prior art: the expansion joint profiles, namely the sliding side beam and the fixed side beam, are integrally cut from π-shaped steel, without welding or bolt connections, resulting in strong overall durability. The guide slope can guide debris from the plate, and most importantly, the stepped surface formed by the cut grooves, covered with a welded plate-like structure, not only does not affect the expansion joint's expansion performance but also protects the comb teeth. Moreover, with the corresponding covering, the overall expansion joint still has a planar structure on top, making it more stable.

[0025] The entire installation allows the waterstop to be pulled without being hindered by it. Compared to existing technologies, it requires less manual intervention, directly using a motor to rotate forward and backward to install the waterstop, and is not limited by the upper comb teeth. This solves both installation and maintenance problems. Attached Figure Description

[0026] To further illustrate the present invention, the following description is provided in conjunction with the accompanying drawings: Figure 1 This is a cross-sectional schematic diagram of the invention; Figure 2 A three-dimensional schematic diagram of the invention; Figure 3 for Figure 2 Annotated diagram; Figure 4 This is a schematic diagram of the second single-sided structure with a fixing plate; Figure 5 A schematic diagram of the first single-sided structure with a sliding plate; Figure 6 A schematic diagram of the cross-section of a π-shaped steel section with mounting grooves; Figure 7 A schematic diagram of the first single side of a π-shaped steel section cut from a steel profile. Figure 8 A schematic diagram of the second single side of a π-shaped steel section. Figure 9 A schematic diagram of the cross-section of a π-shaped steel section with mounting grooves; Figure 10 This is a 3D view of the sliding plate; Figure 11 This is a side view of the sliding plate. Figure 12 This is a structural diagram of a fixed plate with dust removal holes; Figure 13 This is a structural diagram of the anchoring steel plate; Figure 14 A cross-sectional view of the waterstop installation; Figure 15 One of the implementation diagrams for the edge of the stop strip; Figure 16 The second diagram showing the implementation of the stop strip edge; Figure 17 The third diagram showing the implementation of the stop strip edge; Figure 18 The fourth diagram showing the implementation of the stop strip edge; Figures 19 to 25 These are the installation structure diagrams for water hoses: Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, and Part 7. Figure 26 Structural diagram of a dedicated forward / reverse switching device; Figure 27 Perspective view of the rotating forward and reverse changing device; Figure 28 Structural diagram of the rotatable head for holding the stop hose; Figure 29 A partial structural perspective view for positioning the rack; Figure 30 A structural diagram of the end of the rotating forward and reverse rotation replacement device; Figure 31 for Figure 1 Unlabeled diagram; Figure 32 A drawing for further improvements to the invention; Figure 33 for Figure 32 A top view of the technology shown; Figure 34 Structural diagram of a concrete crack-resistant anchor plate; The components include: 1. Longitudinal reinforcement; 2. Embedded reinforcement; 3. Anchor plate; 4. Sliding edge beam; 5. Sliding plate; 6. Fixing plate; 7. Sliding edge beam; 8. Waterstop groove; 9. Replaceable waterstop; 10. Concrete anti-crack anchor plate; 11. Bridge deck fixing plate; 12. Drive gear; 13. Motor shaft; 14. Forward and reverse motor; 15. Advancing and retracting rack; 16. Rack edge limiting plate; 17. Waterstop end fixing part; 18. Fitting surface; 171. Rotating part; 172. Threaded shaft; 173. Rack end; 174. Rotatable block; 175. Extrusion bolt; 176. Plate; 177. Clamping space; 178. Rack limiting protrusion; 20. Concrete anti-crack steel plate. Detailed Implementation

[0027] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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 of two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] This patent provides multiple parallel solutions; the different descriptions represent improved solutions or parallel solutions based on the basic solution. Each solution has its own unique characteristics. Furthermore, the technical features involved in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other. Fixing methods not described herein can be any type of fixing, such as threaded fixing, bolt fixing, or adhesive bonding.

[0030] Example 1: Combining Figures 1 to 13 Of course, it can also be combined with all the attached drawings; A noise reduction self-cleaning bridge expansion joint, characterized in that the expansion joint comprises a fixed side beam obtained by cutting a first single side of a π-shaped steel and a sliding side beam obtained by cutting a second single side of a π-shaped steel. Both the fixed side beam 7 and the sliding side beam 4 contain interlocking teeth cut from π-shaped steel. A fixing plate 6 is fixed to the fixed edge beam 7 via the stepped surface; A sliding plate 5 is fixed on the sliding side beam 4 via a stepped surface; The fixed plate 6 and the sliding plate 5 are arranged vertically and can slide relative to each other; The π-shaped steel is not symmetrical on the left and right sides. Its left side is the first single side 1 and its right side is the second single side 7. A cut groove is provided on the top of the π-shaped steel. The groove has stepped surfaces on both the first single side 1 and the second single side 7. The second single side 7 includes an inclined surface above it, which is a guide slope. Fixed side beam 7 and sliding side beam 4 are installed on both sides of the expansion joint; The subsequent options are any one of the following: A. The fixed side beam 7 and the sliding side beam 4 each include a back bend for bonding with the anchor plate 3 and the concrete. The shape of the end of the anchor plate 3 can fit with the back bend. The anchor plate 3 includes a hole for the longitudinal steel bar 1 to pass through. The longitudinal steel bar 1 passes through the embedded steel bar 2. The embedded steel bar 2 is a ring of steel bars with an opening at the bottom. B. Both the fixed side beam 7 and the sliding side beam 4 include a back bend for bonding with the concrete anti-crack anchor plate 10 and the concrete. When the concrete anti-crack anchor plate 10 is used, a concrete anti-crack steel plate 20 is welded above the anti-crack anchor plate at a position flush with the bridge deck. The concrete anti-crack steel plate 20 has a grid structure. The above structure can protect the post-cast strip concrete from cracking, enhance durability, and reduce the frequency of maintenance.

[0031] The substantive technical effects and implementation process of the technical solution presented here, i.e., its basic functions, are as follows: The expansion joint profiles, namely the sliding side beam and the fixed side beam, are integrally cut from π-shaped steel, without welding or bolt connections, resulting in strong overall durability. The guide slope can guide debris from the plate. Most importantly, the stepped surface formed by the cut grooves, covered with a welded plate-like structure, not only does not affect the expansion joint's expansion performance but also protects the comb teeth. Moreover, with the corresponding covering, the overall expansion joint still has a planar structure on top, making it more stable.

[0032] As a further extension of Embodiment 1, the stepped surfaces on the first and second sides are at different heights. This structure facilitates the sliding of the fixed plate and the sliding plate without affecting the basic function of the expansion joint. The sliding plate contains multiple dust removal holes. The substantive technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: During expansion and contraction, the sliding of the fixed plate and the sliding plate provides a certain pushing and sweeping function. Dust falls from the dust removal holes, achieving surface cleaning. Both the fixed and sliding side beams include a backbend portion for bonding with the anchor plate and concrete. This structure is a mortise and tenon joint, providing a stable fit and facilitating fixation. The fixed plate and the sliding plate can relatively shield the lower teeth, further protecting the lower teeth (comb teeth) and extending their service life.

[0033] Example 2: As a further improvement, parallel, or optional independent solution, the gap positions of the dust removal hole 11 and the teeth of the sliding side beam 5 correspond. The substantial technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: facilitating the cleaning of dust; the sliding plate is arranged above the fixed plate, and when the telescopic device extends or retracts longitudinally, the sliding plate can push the dust along the surface of the fixed plate.

[0034] Example 3: As a further improvement, parallel, or optional independent solution, the step surface on the first single side 1 comprises two parts, one higher and one lower. The lower step surface on the first single side 1 forms a fixing plate slot with the step surface on the second single side 7, where the fixing plate 10 can be secured. The substantive technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: A sliding plate connecting platform, a fixing plate slot, and a guide slope are provided on the π-shaped steel. After dividing the π-shaped steel into sliding side beams and fixed side beams, the sliding plate is placed on the sliding plate connecting platform and connected to the sliding side beams, and the fixing plate is placed at the fixing plate slot and connected to the fixed side beams. The fixing plate slot prevents the fixing plate from twisting and deforming due to pressure from the sliding plate during expansion and contraction.

[0035] Example 4: As a further improvement, parallel, or optional independent solution, the sliding plate 5 is provided with an inclined pushing portion 19 at its end. The substantive technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: the inclined pushing portion 19 facilitates dust removal.

[0036] Example 5: As a further improvement, parallel, or optional independent solution, a waterstop groove 8 is arranged on both the fixed side beam 7 and the sliding side beam 4. The waterstop groove 8 is welded to the fixed side beam 7 and the sliding side beam 4, and also includes a replaceable waterstop 9 that can be installed on the waterstop groove 8. The substantial technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: 1. The waterstop groove with a single-sided opening is connected to the side beams on both sides of the telescopic device. The replaceable waterstop is inserted through the groove. When the waterstop is damaged, it can be easily and quickly replaced by simply pulling it out with a professional tool. 2. The waterstop groove structure can be circular, semi-circular, elliptical, triangular, rectangular, hook-shaped, etc., and the end structure of the replaceable waterstop can be hollow circular, solid circular, elliptical, triangular, semi-circular, rectangular, hook-shaped, etc. Among them, the hollow circular part contains a rigid columnar body. 3. The waterstop groove is made of steel, and the waterstop material can be replaced with flexible materials such as rubber, PVC, plastic, and stainless steel.

[0037] Example 6: As a further improvement, parallel, or alternative independent solution, refer to Figures 26-30 It also includes a forward and reverse reversing device specifically for installing and replacing the replaceable waterstop 9; The forward and reverse switching device includes a bridge deck fixing plate 11, and a bonding surface 18 is arranged on the lower surface of the bridge deck fixing plate 11, which can cover the bridge deck. A forward and reverse motor 14 is fixed below the bridge deck fixing plate 11 by a block. The shaft of the forward and reverse motor 14 is a motor shaft 13. A drive gear 12 is arranged at the end of the motor shaft 13. The drive gear 12 meshes with the forward and reverse rack 15. A rack edge limiting plate 16 is installed downward on the bridge deck fixing plate 11. The rack edge limiting plate 16 has a hole at its bottom for engaging the rack limiting protrusion 178. A rack limiting protrusion 178 is arranged on each of the two sides of the forward and reverse rack 15. A waterstop end is arranged at the end of the forward and reverse rack 15. The fixing part 17 includes a threaded shaft 172 that passes through a hole in the rack end 173. A rotatable block 174 is integrally connected below the threaded shaft 172. Two clamping devices are arranged on the rotatable block 174. The clamping devices include two parallel plates 176. The gap between the two parallel plates 176 is the clamping space 177. Threaded holes are arranged on the upper plate 176 for passing through the extrusion bolt 175. The replaceable waterstop 9 can be clamped by the clamping space 177. A rotating part 171 is arranged on the threaded shaft 172. The rotating part 171 rotates on the threaded shaft 172 and presses downward against the rack end 173, thereby fixing the rotatable block 174.

[0038] The substantive technical effects and implementation process of the technical solution here, i.e., the basic functions, are as follows: Another prominent advantage of this embodiment is that the overall installation can pull the waterstop but will not be affected by the waterstop.

[0039] A method for installing a noise-reducing self-cleaning bridge expansion joint, characterized in that it employs any of the noise-reducing self-cleaning bridge expansion joints described above, and includes the following steps; Includes installation; The installation steps are as follows: The first step of installation is to cover the bridge deck fixing plate 11 with the bonding surface 18. Rotate the rotating part 171 to loosen it, rotate the rotatable block 174 to make it horizontal. Then, the replaceable waterstop 9 is fixed by the clamping space 177 and the extrusion bolt 175. The end of the replaceable waterstop 9 is inserted into the waterstop slot 8. The second step of installation involves turning on the forward and reverse motor 14. The motor shaft 13 rotates, driving the drive gear 12. The drive gear 12 rotates, driving the rack 15 to move along the edge of the rack and the hole included below the limiting plate 16 towards the other side of the bridge, thereby moving the entire replaceable waterstop 9 to the other side of the bridge. Once in place, the forward and reverse motor 14 stops. Then, a person walks to the other side of the bridge and loosens the clamping bolt 175. Next, the rotatable block 174 is loosened and rotated so that its body is arranged along the expansion joint. Then, the rotatable block 174 is used to fix it so that the positions of the rotatable block 174 and the replaceable waterstop 9 do not conflict. The third step of installation involves turning on the forward and reverse motor 14 in the opposite direction. The forward and backward rack 15 retracts to its original position along the space above the replaceable waterstop 9. The forward and reverse motor 14 is remotely controlled throughout the process.

[0040] A further technical solution of the present invention includes a replacement step, wherein the replacement step involves first removing and then installing. The demolition steps are as follows: First step of removal: The bonding surface 18 of the bridge deck fixing plate 11 can cover the bridge deck. Rotate the rotatable block 174 so that its body is arranged along the expansion joint. Then fix it with the rotatable block 174 so that the position of the rotatable block 174 and the replaceable waterstop 9 does not conflict. The second step of dismantling: Turn on the forward and reverse motor 14. The motor shaft 13 rotates, driving the drive gear 12. The drive gear 12 rotates, driving the forward and backward rack 15 to move along the hole included below the rack edge limiting plate 16 towards the other side of the bridge. After reaching the other side of the bridge, the forward and reverse motor 14 stops. Then, a person walks to the other side of the bridge and rotates the rotatable block 174 to make its body horizontal. Then, the old replaceable waterstop 9 that needs to be replaced is fixed and clamped using the compression bolt 175 and the clamping space 177. The third step of dismantling: turn on the forward and reverse motor 14 in the opposite direction, and the forward and backward rack 15 will return to its original position along the space above the replaceable waterstop 9. During the whole process, the forward and reverse motor 14 is remotely controlled, and the old replaceable waterstop 9 that needs to be replaced is pushed out of the waterstop slot 8. At this point, remove the old replaceable waterstop 9 and adopt the new installation procedure.

[0041] The entire installation allows the waterstop to be pulled without being hindered by it. Compared to existing technologies, it requires less manual intervention, directly using a motor to rotate forward and backward to install the waterstop, and is not limited by the upper comb teeth. This solves both installation and maintenance problems.

[0042] Example 7: As a further improvement, parallel, or optional independent solution, the bridge deck fixing plate 11 includes multiple sets, and the advancing and retracting rack 15 can advance and retract along the holes included below the rack edge limiting plate 16. The substantial technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: multiple sets provide better positioning and facilitate stable advance and retracting of the rack 15.

[0043] Example 8: As a further improvement, parallel solution, or alternative independent solution, refer to Figures 14-25The waterstop groove 8 can be any one of the following shapes: circular, semi-circular, elliptical, triangular, rectangular, or hook-shaped; the end structure cross-section of the replaceable waterstop 9 can be any one of the following shapes: hollow circular, solid circular, elliptical, triangular, semi-circular, rectangular, or hook-shaped; among them, the middle of the end of the solid circular replaceable waterstop 9 is wrapped with a rigid columnar body; the waterstop groove 8 is made of steel, and the replaceable waterstop 9 can be any one of the following materials: ductile rubber, plastic, or stainless steel plate.

[0044] Second series of solutions: Example 9: As a further improvement, parallel solution, or optional independent solution, this example can be patented independently, and its implementation process is similar to the previous examples; a waterstop installation structure for a noise-reducing self-cleaning bridge expansion joint, characterized in that, Includes a forward and reverse reversible replacement device specifically for installing and replacing the replaceable waterstop 9; The forward and reverse switching device includes a bridge deck fixing plate 11, and a bonding surface 18 is arranged on the lower surface of the bridge deck fixing plate 11, which can cover the bridge deck. A forward and reverse motor 14 is fixed below the bridge deck fixing plate 11 by a block. The shaft of the forward and reverse motor 14 is a motor shaft 13. A drive gear 12 is arranged at the end of the motor shaft 13. The drive gear 12 meshes with the forward and reverse rack 15. A rack edge limiting plate 16 is installed downward on the bridge deck fixing plate 11. The rack edge limiting plate 16 has a hole at its bottom for engaging the rack limiting protrusion 178. A rack limiting protrusion 178 is arranged on each of the two sides of the forward and reverse rack 15. A waterstop end is arranged at the end of the forward and reverse rack 15. The fixing part 17 includes a threaded shaft 172 that passes through a hole in the rack end 173. A rotatable block 174 is integrally connected below the threaded shaft 172. Two clamping devices are arranged on the rotatable block 174. The clamping devices include two parallel plates 176. The gap between the two parallel plates 176 is the clamping space 177. Threaded holes are arranged on the upper plate 176 for passing through the extrusion bolt 175. The replaceable waterstop 9 can be clamped by the clamping space 177. A rotating part 171 is arranged on the threaded shaft 172. The rotating part 171 rotates on the threaded shaft 172 and presses downward against the rack end 173, thereby fixing the rotatable block 174.

[0045] Example 10: As a further improvement, parallel, or optional independent solution, the waterstop groove 8 can be any one of the following shapes: circular, semi-circular, elliptical, triangular, rectangular, or hook-shaped.

[0046] Example 11: As a further improvement, parallel, or optional independent solution, the end structure cross-section of the replaceable waterstop 9 can be any one of hollow circular, solid circular, elliptical, triangular, semi-circular, rectangular, or hook-shaped.

[0047] Example 12: As a further improvement, parallel, or alternative independent solution, the middle of the end of the solid circular replaceable waterstop 9 is wrapped with a rigid columnar body. Example 13: As a further improvement, parallel, or optional independent solution, the waterstop groove 8 is made of steel. Example 14: As a further improvement, parallel, or optional independent solution, the replaceable waterstop 9 can be any one of rubber, plastic, or stainless steel plate with ductility.

[0048] Example 15: As a further improvement, parallel solution, or optional independent solution, the forward and reverse motor 14 is connected to a battery or mains power supply that can power it.

[0049] Example 16: As a further improvement, parallel, or optional independent solution, the fixed side beam 7 and the sliding side beam 4 each include a back bend for bonding with the concrete anti-crack anchor plate 10 and the concrete. When the concrete anti-crack anchor plate 10 is used, a concrete anti-crack steel plate 20 is welded above the anti-crack anchor plate at a position flush with the bridge deck. The concrete anti-crack steel plate 20 has a grid structure. The above structure can protect the post-cast strip concrete from cracking, enhance durability, and reduce the frequency of maintenance.

[0050] The top surface of the concrete crack-resistant anchor plate 10 includes a horizontal portion, which can be welded to the concrete crack-resistant steel plate 20, which has a grid structure.

[0051] It should be noted that the multiple solutions provided in this patent include their own basic solutions, which are independent of each other and do not restrict each other. However, they can also be combined with each other without conflict to achieve multiple effects.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. A noise-reducing, self-cleaning bridge expansion joint, characterized in that, The expansion joint includes a fixed side beam obtained by cutting a first single side of a π-shaped steel and a sliding side beam obtained by cutting a second single side of a π-shaped steel; both the fixed side beam (7) and the sliding side beam (4) contain interlocking teeth cut from the π-shaped steel; a fixed plate (6) is fixed to the fixed side beam (7) via a stepped surface; a sliding plate (5) is fixed to the sliding side beam (4) via a stepped surface; the fixed plate (6) and the sliding plate (5) are arranged vertically and can slide relative to each other; the left and right sides of the π-shaped steel are not symmetrical, with the left side being the first single side and the right side being the second single side, and a cut groove is provided above the π-shaped steel, wherein the groove has stepped surfaces arranged on both the first and second single sides, and the second single side contains an inclined surface, which is a guide slope; the fixed side beam (7) and the sliding side beam (4) are installed on both sides of the expansion joint; the subsequent scheme is any one of the following: A. The fixed side beam (7) and the sliding side beam (4) each include a back bend for bonding with the anchor plate (3) and the concrete. The shape of the end of the anchor plate (3) can fit with the back bend. The anchor plate (3) includes a hole for the longitudinal reinforcement (1) to pass through. The longitudinal reinforcement (1) passes through the embedded reinforcement (2). The embedded reinforcement (2) is a ring of reinforcement with an opening at the bottom. B. The fixed side beam (7) and the sliding side beam (4) each include a back bend for bonding with the concrete anti-crack anchor plate (10) and the concrete. When the concrete anti-crack anchor plate (10) is used, a concrete anti-crack steel plate (20) is welded above the anti-crack anchor plate at a position flush with the bridge deck. The concrete anti-crack steel plate (20) is a grid structure. The above structure can protect the post-cast strip concrete from cracking, enhance durability, and reduce the frequency of maintenance.

2. The noise-reducing self-cleaning bridge expansion joint as described in claim 1, characterized in that, The sliding plate (5) contains multiple dust removal holes (11).

3. The noise-reducing self-cleaning bridge expansion joint as described in claim 1, characterized in that, The sliding plate (5) is arranged above the fixed plate (6). When the telescopic device extends and retracts longitudinally, the sliding plate (5) can push the dust along the surface of the fixed plate (6).

4. The noise-reducing self-cleaning bridge expansion joint as described in claim 3, characterized in that, The sliding plate (5) has an arc-shaped part (19) at its end.

5. A noise-reducing self-cleaning bridge expansion joint as described in claim 1, characterized in that, A waterstop groove (8) is arranged on each of the fixed side beam (7) and the sliding side beam (4). The waterstop groove (8) is welded to the fixed side beam (7) and the sliding side beam (4), and also includes a replaceable waterstop (9) that can be installed on the waterstop groove (8).

6. The noise-reducing self-cleaning bridge expansion joint as described in claim 5, characterized in that, It also includes a forward and reverse replacement device specifically for installing and replacing the replaceable waterstop (9); the forward and reverse replacement device includes a bridge deck fixing plate (11), the lower surface of which is provided with a mating surface (18) that can cover the bridge deck; a forward and reverse motor (14) is fixed below the bridge deck fixing plate (11) by a block, the shaft of the forward and reverse motor (14) is a motor shaft (13), the end of the motor shaft (13) is provided with a drive gear (12), the drive gear (12) meshes with a forward and reverse rack (15), a rack edge limiting plate (16) is installed downward on the bridge deck fixing plate (11), the rack edge limiting plate (16) has a hole below it for engaging the rack limiting protrusion (178), the two sides of the forward and reverse rack (15) are each provided with a rack limiting protrusion (178), and the ends of the forward and reverse rack (15) are provided with a rack limiting protrusion (178). A waterstop end fixing part (17) is provided, the waterstop end fixing part (17) includes a threaded shaft (172) that passes through a hole on the rack end (173), a rotatable block (174) is integrally connected below the threaded shaft (172), two clamping devices are arranged on the rotatable block (174), the clamping devices include two parallel plates (176), the gap between the two parallel plates (176) is a clamping space (177), a threaded hole is arranged on the upper plate (176) for passing through the extrusion bolt (175); the replaceable waterstop (9) can be clamped by the clamping space (177); a rotating part (171) is arranged on the threaded shaft (172), the rotating part (171) rotates on the threaded shaft (172) and presses downward on the rack end (173) to fix the rotatable block (174).

7. A noise-reducing self-cleaning bridge expansion joint as described in claim 6, characterized in that, The bridge deck fixing plate (11) includes multiple sets of forward and backward racks (15) that can move forward and backward along the holes included below the rack edge limiting plate (16).

8. A noise-reducing self-cleaning bridge expansion joint as described in claim 6, characterized in that, The waterstop groove (8) is any one of the following: circular, semi-circular, elliptical, triangular, rectangular, or hook-shaped; the end structure cross-section of the replaceable waterstop (9) is any one of the following: hollow circular, solid circular, elliptical, triangular, semi-circular, rectangular, or hook-shaped; among them, the middle of the end of the solid circular replaceable waterstop (9) is wrapped with a hard columnar body; the waterstop groove (8) is made of steel, and the replaceable waterstop (9) is any one of the following: rubber, plastic, or stainless steel plate with ductility.

9. A method for installing a noise-reducing, self-cleaning bridge expansion joint, characterized in that, The noise reduction self-cleaning bridge expansion joint device according to any one of claims 1-8 includes the following steps; including installation; the installation steps are as follows: First, the contact surface (18) of the bridge deck fixing plate (11) is enough to cover the bridge deck, the rotating part (171) is rotated to loosen it, the rotatable block (174) is rotated to make it horizontally arranged, and then the replaceable waterstop (9) is fixed by the clamping space (177) and the extrusion bolt (175), and the end of the replaceable waterstop (9) is inserted into the waterstop slot (8); Second, the forward and reverse motor (14) is turned on, the motor shaft (13) rotates to drive the drive gear (12), and the drive gear (12) rotates to drive the forward and backward rack (15) to be limited along the edge of the rack. The hole contained under the plate (16) moves toward the other side of the bridge, thereby moving the entire replaceable waterstop (9) to the other side of the bridge; after it is in place, the forward and reverse motor (14) stops, and then a person walks to the other side of the bridge and loosens the clamping bolt (175); then loosens the rotatable block (174), rotates the rotatable block (174) so ​​that its body is arranged along the expansion joint, and then uses the rotatable block (174) to fix it so that the positions of the rotatable block (174) and the replaceable waterstop (9) do not conflict; in the third step of installation, the forward and reverse motor (14) is turned on in the opposite direction, and the forward and backward rack (15) returns to the original position along the space above the replaceable waterstop (9). The forward and reverse motor (14) is remotely controlled throughout the process.

10. The installation method of a noise-reducing self-cleaning bridge expansion joint as described in claim 9, characterized in that, It also includes a replacement step, which involves first removing and then installing; the removal steps are as follows: Removal step 1: The mating surface (18) of the bridge deck fixing plate (11) is enough to cover the bridge deck. Rotate the rotatable block (174) so ​​that its body is arranged along the expansion joint. Then use the rotatable block (174) to fix it so that the rotatable block (174) and the replaceable waterstop (9) do not conflict in position; Removal step 2: Turn on the forward and reverse motor (14). The motor shaft (13) rotates and drives the drive gear (12). The drive gear (12) rotates and drives the forward and backward rack (15) to move towards the other side of the bridge along the hole contained in the limit plate (16) on the edge of the rack. One side; after positioning, the forward and reverse motor (14) stops, and then the person walks to the other side of the bridge, rotates the rotatable block (174) to make its body horizontal, and then uses the compression bolt (175) and clamping space (177) to fix and clamp the old replaceable waterstop (9) that needs to be replaced; dismantle the third step: turn on the forward and reverse motor (14) in the reverse direction, and the forward and backward rack (15) moves back to the original position along the space above the replaceable waterstop (9). During the whole process, the forward and reverse motor (14) is remotely controlled, and the old replaceable waterstop (9) that needs to be replaced is pushed out of the waterstop slot (8); at this time, the old replaceable waterstop (9) is removed; adopt the new installation steps.

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