Bridge expansion joint device convenient to maintain
By introducing a fixed plate, cleaning cover plate, interlocking teeth, sand and gravel collection box, and cleaning scraper into the bridge expansion joint device, the problem of sand and gravel getting stuck in the empty groove of the interlocking teeth is solved, realizing the free expansion and contraction of the expansion joint and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-03
AI Technical Summary
Existing bridge expansion joint devices are prone to trapping sand and gravel in the slots between the interlocking teeth, resulting in reduced freedom of movement and inconvenient maintenance.
A bridge expansion joint device was designed, comprising a fixing plate, a cleaning cover plate, interlocking teeth, a sand and gravel collection box, and a cleaning scraper. The automatic collection and cleaning of sand and gravel is achieved by pushing the push-pull frame, avoiding sand and gravel blockage, and the large-area internal cavity of the fixing plate facilitates cleaning.
It effectively prevents sand and gravel from blocking the expansion joint gaps, ensuring the free expansion and contraction of the expansion joints, and simplifies the later maintenance and cleaning process.
Smart Images
Figure CN224077959U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal bridge engineering technology, and in particular to a bridge expansion joint device that is easy to maintain. Background Technology
[0002] Bridge expansion joints are an important component of bridge structures. They are mainly used to accommodate the expansion and contraction deformation of bridges caused by factors such as temperature changes, concrete shrinkage and creep, and vehicle loads, ensuring that the bridge structure maintains its integrity and stability during dynamic changes.
[0003] Currently, some expansion joints used on bridges adopt the comb-tooth plate type. The comb-tooth plate type expansion joint slides and engages through staggered interlocking teeth. However, there are many gaps between the interlocking teeth. When vehicles travel on the bridge, they carry and splash some sand and gravel. This sand and gravel falls directly into the gaps between the interlocking teeth, which can easily cause blockage between the expansion joints and affect their free expansion and contraction. Moreover, the gaps between the interlocking teeth are relatively small, making later maintenance and cleaning very inconvenient. Summary of the Invention
[0004] This utility model provides a bridge expansion joint device that is easy to maintain. It can effectively prevent sand and gravel from blocking the gaps between expansion joints, ensuring that the expansion joints can expand and contract freely, and it is also more convenient for later maintenance and cleaning.
[0005] In a first aspect, this utility model provides a bridge expansion joint device that is easy to maintain, specifically including: a fixing plate;
[0006] One side of each fixing plate has mounting holes at equal intervals; a cleaning cover plate is also bolted to the top of each fixing plate; the other side of each fixing plate has interlocking teeth at equal intervals formed in one piece, and a sand and gravel collection box is fixed below each adjacent interlocking tooth; a cleaning scraper is slidably installed inside each sand and gravel collection box, and the cleaning scraper is welded to one side of the push-pull frame.
[0007] The cleaning scrapers are all rectangular plates, and the outer wall of the cleaning scraper is in close contact with the inner walls of the front and rear sides and the bottom of the sand and gravel collection box.
[0008] The width of the sand and gravel collection box is equal to the width of the interlocking teeth, and the top surface of the sand and gravel collection box and the bottom surface of the interlocking teeth are located on the same plane.
[0009] When the push-pull bracket is pulled to the innermost side of the rectangular cavity inside the fixed plate, the cleaning scraper will slide to one side of the rectangular cavity inside the fixed plate.
[0010] The top surfaces of the front and rear outer walls of the sand and gravel collection box are both inclined surfaces, and the sand and gravel collection box will always be located below the slot between the interlocking teeth when the bridge is expanding and contracting.
[0011] Each of the fixing plates has a rectangular cavity inside, and the cleaning cover is installed on top of this rectangular cavity. The rectangular cavity inside the fixing plate is connected to the groove on the inner side of the sand and gravel collection box.
[0012] This utility model provides a bridge expansion joint device that is easy to maintain, and has the following beneficial effects:
[0013] The sand and gravel collection box of this utility model can collect sand and gravel that fall into the slots between the interlocking teeth, effectively preventing sand and gravel from blocking the gaps between expansion joints, ensuring that the expansion joints can expand and contract freely. Moreover, when it is necessary to clean the collected sand and gravel, simply remove the cleaning cover plate and move the cleaning scraper by pushing the scraper to collect the sand and gravel in the cavity inside the fixed plate. The cavity inside the fixed plate has a large opening, which makes it easy to clean the sand and gravel outwards, and it is also more convenient for later maintenance and cleaning. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.
[0016] In the attached diagram:
[0017] Figure 1 A schematic diagram of the overall structure of this application from the main axis side is shown;
[0018] Figure 2 A top view of the overall structure of this application is shown;
[0019] Figure 3 This application shows a schematic diagram of the spindle side after the cleaning cover plate has been removed and the push-pull bracket has been dragged.
[0020] Figure 4 This paper shows an axial side view of the fixed plate after it has been cut in this application;
[0021] Figure 5 A side view of the fixing plate in this application is shown.
[0022] Figure 6 A schematic diagram of the sand and gravel collection box in this application is shown;
[0023] List of reference numerals
[0024] 1. Fixing plate; 2. Mounting hole; 3. Cleaning cover plate; 4. Engaging teeth; 5. Sand and gravel collection box; 6. Cleaning scraper; 7. Push-pull bracket. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] Example 1: Please refer to Figures 1 to 6 :
[0027] This utility model proposes a bridge expansion joint device that is easy to maintain, including: a fixing plate 1;
[0028] Mounting holes 2 are equidistantly arranged on one side of the fixing plate 1. The fixing plate 1 is used to support the cleaning cover plate 3, the interlocking teeth 4, and the sand and gravel collection box 5. When installing the fixing plate 1, simply pass the expansion bolts through the mounting holes 2 and screw them into the bridge plate. A cleaning cover plate 3 is also bolted to the top of the fixing plate 1. The cleaning cover plate 3 is used to cover the opening at the top of the rectangular cavity inside the fixing plate 1. When cleaning and maintenance of the collected sand and gravel is required, simply remove the cleaning cover plate 3 first. After cleaning, push the push-pull bracket 7 and the cleaning scraper 6 back to their original positions and reinstall the cleaning cover plate 3. The other side of the fixing plate 1 is equidistantly arranged with interlocking teeth 4 by integral molding. A sand and gravel collection box 5 is fixed below each adjacent interlocking teeth 4. When the bridge deforms, the interlocking teeth on the two fixing plates 1 will be adjusted accordingly. The teeth 4 can move relative to each other, thus achieving a telescopic effect. When sand and gravel splashed from the bridge surface by vehicles fall into the slots between the teeth 4, these sand and gravel will fall directly into the grooves inside the sand and gravel collection box 5, thus collecting the sand and gravel and preventing it from getting stuck in the gaps and causing obstruction. A cleaning scraper 6 is slidably installed inside the sand and gravel collection box 5, and the cleaning scraper 6 is welded to one side of the push-pull frame 7. When it is necessary to clean and maintain the collected sand and gravel, simply remove the cleaning cover plate 3 first, and then push the push-pull frame 7 toward the rectangular cavity inside the fixed plate 1. During this process, the cleaning scraper 6 will slide in the grooves inside the sand and gravel collection box 5, thus pushing the sand and gravel in the sand and gravel collection box 5 into the rectangular cavity inside the fixed plate 1, making it easier to clean the collected sand and gravel outward.
[0029] In this embodiment, as Figures 3-5As shown, the cleaning scrapers 6 are all rectangular plates, and the outer wall of the cleaning scraper 6 is in close contact with the inner walls of the front and rear sides and the bottom inner wall of the sand and gravel collection box 5. When it is necessary to clean the collected sand and gravel, the push-pull bracket 7 can be pushed towards the rectangular cavity inside the fixed plate 1. During this process, the cleaning scraper 6 will slide in the groove inside the sand and gravel collection box 5, so that the sand and gravel in the sand and gravel collection box 5 can be pushed into the rectangular cavity inside the fixed plate 1, thus facilitating the outward cleaning of the collected sand and gravel.
[0030] In this embodiment, as Figures 1-5 As shown, the width of the sand and gravel collection box 5 is equal to the width of the interlocking teeth 4, and the top surface of the sand and gravel collection box 5 and the bottom surface of the interlocking teeth 4 are on the same plane. Therefore, the interlocking teeth 4 will not cause the staggered sand and gravel collection boxes 5 to collide when they slide and adjust. Moreover, when the sand and gravel splashed by the vehicle on the bridge surface falls into the slots between the interlocking teeth 4, these sand and gravel will fall directly into the grooves on the inner side of the sand and gravel collection box 5, thereby collecting the sand and gravel and preventing the sand and gravel from getting stuck in the gaps and causing obstruction.
[0031] In this embodiment, as Figures 1-6 As shown, the top surfaces of the front and rear outer walls of the sand and gravel collection box 5 are inclined surfaces, and the sand and gravel collection box 5 will always be located below the slots between the interlocking teeth 4 when the bridge is expanding and contracting. Therefore, sand and gravel are more likely to fall into the grooves inside the sand and gravel collection box 5, preventing sand and gravel from accumulating on the top of the front and rear outer walls of the sand and gravel collection box 5. Moreover, all the sand and gravel falling into the slots between the interlocking teeth 4 can be collected by the sand and gravel collection box 5.
[0032] In this embodiment, as Figures 1-5 As shown, each of the fixed plates 1 has a rectangular cavity inside. The cleaning cover 3 is installed on the top of this rectangular cavity, and the rectangular cavity inside the fixed plate 1 is connected to the groove inside the sand and gravel collection box 5. When the collected sand and gravel needs to be cleaned and maintained, simply remove the cleaning cover 3 first, and then push the push-pull bracket 7 toward the rectangular cavity inside the fixed plate 1. During this process, the cleaning scraper 6 will slide in the groove inside the sand and gravel collection box 5, thus pushing the sand and gravel in the sand and gravel collection box 5 into the rectangular cavity inside the fixed plate 1, which facilitates the external cleaning of the collected sand and gravel. After cleaning, push the push-pull bracket 7 and the cleaning scraper 6 back to their original positions and reinstall the cleaning cover 3.
[0033] Example 2, based on Example 1, such as Figures 1-6As shown, when the push-pull bracket 7 is pulled to the innermost side of the rectangular cavity inside the fixed plate 1, the cleaning scraper 6 will slide to one side of the rectangular cavity inside the fixed plate 1. When the collected sand and gravel need to be cleaned and maintained, simply remove the cleaning cover plate 3 first, and then push the push-pull bracket 7 into the rectangular cavity inside the fixed plate 1. During this process, the cleaning scraper 6 will slide in the groove inside the sand and gravel collection box 5, thus pushing the sand and gravel in the sand and gravel collection box 5 into the rectangular cavity inside the fixed plate 1, which facilitates the outward cleaning of the collected sand and gravel.
[0034] The working principle of this embodiment is as follows: During installation, two fixing plates 1 can be installed on one side of the gap at the two beam ends, with the interlocking teeth 4 on one side of the two fixing plates 1 staggered. Installation simply requires passing the expansion bolts through the mounting holes 2 and screwing them into the bridge plate. When the bridge deforms, the interlocking teeth 4 on the two fixing plates 1 will move relative to each other, thus achieving a telescoping effect. Furthermore, when sand and gravel splashed from vehicles passing over the bridge surface fall into the grooves between the interlocking teeth 4, this sand and gravel will directly fall into the grooves inside the sand and gravel collection box 5, thereby collecting the sand and gravel. To prevent sand and gravel from getting stuck in the gaps and causing obstruction, when cleaning and maintaining the collected sand and gravel later, simply remove the cleaning cover plate 3 first, and then push the push-pull bracket 7 toward the rectangular cavity inside the fixed plate 1. During this process, the cleaning scraper 6 will slide in the groove inside the sand and gravel collection box 5, thus pushing the sand and gravel in the sand and gravel collection box 5 into the rectangular cavity inside the fixed plate 1, making it easier to clean the collected sand and gravel outward. After cleaning, push the push-pull bracket 7 and the cleaning scraper 6 back to their original positions and reinstall the cleaning cover plate 3.
[0035] The following points should be noted in this article:
[0036] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.
[0037] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.
Claims
1. A maintenance-friendly bridge expansion joint apparatus comprising: The utility model discloses a fixed plate (1), its characterized in that: One side of the fixed plate (1) is provided with mounting holes (2) at equal intervals, and the top of the fixed plate (1) is further provided with a cleaning cover plate (3) through bolts; the other side of the fixed plate (1) is provided with embedded teeth (4) at equal intervals through an integral forming mode, and a sand collecting box (5) is further fixed below adjacent embedded teeth (4); the inside of the sand collecting box (5) is slidably provided with a cleaning scraper (6), and the cleaning scraper (6) is welded to one side of a push-pull frame (7).
2. The bridge expansion joint device of claim 1, wherein, The width of the sand collecting box (5) is equal to the width of the embedded teeth (4), and the top surface of the sand collecting box (5) is located on the same plane as the bottom surface of the embedded teeth (4).
3. The bridge expansion joint device of claim 1, wherein, The top surface of the front and rear side walls of the sand collecting box (5) is an inclined surface, and the sand collecting box (5) is always located below the gap between the embedded teeth (4) when the bridge expands.
4. The bridge expansion joint device of claim 1, wherein, The fixed plate (1) is internally provided with a rectangular cavity, and the cleaning cover plate (3) is installed on the top of the rectangular cavity, and the rectangular cavity in the fixed plate (1) is in communication with the groove on the inside of the sand collecting box (5).
5. The bridge expansion joint device of claim 1, wherein, The cleaning scraper (6) is a rectangular plate, and the outer wall of the cleaning scraper (6) is in close contact with the front and rear side walls and the bottom wall of the sand collecting box (5).
6. The bridge expansion joint device of claim 1, wherein, When the push-pull frame (7) is pulled to the innermost side of the rectangular cavity in the fixed plate (1), the cleaning scraper (6) will slide to one side of the rectangular cavity in the fixed plate (1).