Bridge expansion joint structure capable of damping and reducing noise
By introducing components such as elastic parts, shock-absorbing plates and dampers into the expansion joint structure of the bridge, the functional damage and noise problems caused by the intrusion of debris are solved, and damping noise reduction and stability improvement are achieved.
Patent Information
- Application Number
- CN202422804648.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-15
AI Technical Summary
The existing bridge expansion joint structure is easily invaded by dust and debris, resulting in impaired functionality and insufficient noise reduction effect, affecting the stability of the bridge and driving comfort.
It adopts elastic parts, shock absorbing plates, dampers, fixed pins and specially designed tooth plate structure, combined with grooves, compression springs and positioning blocks, to design a damping noise reduction technology, which uses external force to expel debris and absorb noise.
It effectively prevents debris from damaging expansion joints, extending their service life, while reducing noise when vehicles pass by, improving driving comfort and bridge stability.
Smart Images
Figure CN223398042U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridges, in particular to a bridge expansion joint structure capable of damping and reducing noise. Background Art
[0002] With the continuous growth of my country's economy, urban infrastructure has been significantly improved, especially the construction of more and more bridges, which are becoming more and more beautiful, greatly improving people's travel conditions. At the same time, many quality problems have also been exposed. Bridge quality is related to transportation safety. The frequent occurrence of bridge jumping not only makes the safety of car driving unsafe, but also threatens people's lives and property. There are many reasons for bridge jumping, among which expansion joint jumping and bridge fill jumping are the most common.
[0003] After searching, the publication number CN216074720U was found, titled "A Noise-Reducing Bridge Expansion Joint Structure," comprising a pair of adjacent bridge plates, a shock-absorbing assembly, a hinge assembly, and an embedded mechanism. Research and analysis revealed that while the bridge expansion joint structure has advantages such as further increased stability and reduced noise generated during hinged connection, it also has the following disadvantages to a certain extent:
[0004] For example, since expansion joints are often in an open state, dust and other debris can easily fall into them, which not only increases the difficulty of cleaning, but may also damage the function of the expansion joints and affect the overall safety and stability of the bridge. Secondly, the accumulation of dust and debris may also aggravate the wear of the expansion joints and shorten their service life. In addition, the traditional expansion joint structure also has shortcomings in noise reduction. It is easy to generate noise when vehicles pass by, affecting driving comfort. In order to solve the above technical problems, we have designed a bridge expansion joint structure with damping and noise reduction to solve the above problems. Utility Model Content
[0005] The purpose of the utility model is to provide a bridge expansion joint structure with damping and noise reduction, which has the advantages of excellent noise reduction performance, adaptability and stability, and easy maintenance, and solves the problem that debris can easily cause damage to the expansion joint function and insufficient noise reduction.
[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a bridge expansion joint structure capable of damping and reducing noise, comprising a bridge plate, a bracket welded to the surface of the bridge plate, a clamping plate movably sleeved on the surface of the bracket, an adjustment mechanism provided on the opposite side of the bridge plate, the adjustment mechanism comprising an elastic member, the elastic member being fixedly connected to the clamping plate, a shock-absorbing plate being fixedly connected to the bottom of the elastic member, and a shock-absorbing spring and a damper being fixedly installed between the shock-absorbing plate and the bridge plate.
[0007] Preferably, a fixing pin is provided through the top of the card plate, guide grooves are respectively provided on the inner walls of the bracket and the card plate, and a fixing plate is fixedly connected to the bottom of the fixing pin.
[0008] Preferably, a groove is provided on the inner wall of the bracket, a compression spring is fixedly connected to the inner wall of the groove, a positioning block is fixedly connected to the surface of the compression spring, a positioning groove is provided on the surface of the fixed pin shaft, and the positioning block extends to the inner cavity of the positioning groove.
[0009] Preferably, a tooth plate is welded on the surface of the bridge plate, teeth are fixedly provided on the surface of the bridge plate, the tooth plate and the teeth are engaged with each other, an adjustment groove is opened on the surface of the bridge plate, a screw is welded on the surface of the tooth plate, and a limit sleeve is provided on the surface thread of the screw.
[0010] Preferably, there are several card boards, and the card boards are arranged at equal distances.
[0011] Preferably, the shock-absorbing spring is movably mounted on the surface of the damper, and the elastic member is movably connected to the inner wall of the bridge plate.
[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0013] 1. The utility model cooperates with elastic parts, shock-absorbing plates, shock-absorbing springs, dampers, fixed pins, guide grooves and fixed plates, and utilizes specially designed structural shock-absorbing plates and elastic sealing strips and elastic parts. When dust and other debris fall into the expansion joint, these debris can be squeezed out of the expansion joint by external force, and the damage to the expansion joint function caused by debris can be avoided, thereby extending its service life.
[0014] 2. The expansion joint structure of the utility model adopts damping noise reduction technology through the coordination of grooves, compression springs, positioning blocks, positioning slots, tooth plates and teeth, such as positioning blocks or specially shaped comb teeth, to reduce the noise generated when vehicles pass by. These designs can effectively absorb and disperse noise and improve driving comfort. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0016] Figure 2 This is a bottom-up perspective diagram of the present invention;
[0017] Figure 3 This is a schematic sectional perspective view of the present invention;
[0018] Figure 4 It is a partial three-dimensional schematic diagram of the utility model;
[0019] Figure 5For this utility model Figure 3 A magnified three-dimensional schematic diagram of the middle part.
[0020] In the figure: 1. Bridge plate; 2. Bracket; 3. Clamping plate; 4. Adjusting mechanism; 5. Elastic member; 6. Shock-absorbing plate; 7. Shock-absorbing spring; 8. Damper; 9. Fixed pin; 10. Guide groove; 11. Fixed plate; 12. Groove; 13. Compression spring; 14. Positioning block; 15. Positioning groove; 16. Tooth plate; 17. Teeth; 18. Adjusting groove; 19. Screw; 20. Limiting sleeve. DETAILED DESCRIPTION
[0021] See also Figure 1-Figure 5 A bridge expansion joint structure with damping and noise reduction includes a bridge plate 1, a bracket 2 is welded on the surface of the bridge plate 1, a clamping plate 3 is movably sleeved on the surface of the bracket 2, an adjustment mechanism 4 is provided on the opposite side of the bridge plate 1, the adjustment mechanism 4 includes an elastic member 5, the elastic member 5 is fixedly connected to the clamping plate 3, a shock-absorbing plate 6 is fixedly connected to the bottom of the elastic member 5, and a shock-absorbing spring 7 and a damper 8 are fixedly installed between the shock-absorbing plate 6 and the bridge plate 1.
[0022] See also Figure 5 A fixing pin 9 is provided through the top of the card plate 3, and a guide groove 10 is provided on the inner wall of the bracket 2 and the card plate 3 respectively. By setting the guide groove 10, the position of the fixing pin 9 can be guided, and the power can be driven to rotate the fixing plate 11. The bottom of the fixing pin 9 is fixedly connected to the fixing plate 11.
[0023] See also Figure 3 and Figure 5 A groove 12 is provided on the inner wall of the bracket 2. By setting the groove 12, a support point can be provided for the positioning block 14, which is convenient for the user to withstand lateral pressure on it. A compression spring 13 is fixedly connected to the inner wall of the groove 12, and the surface of the compression spring 13 is fixedly connected to the positioning block 14. A positioning groove 15 is provided on the surface of the fixed pin shaft 9, and the positioning block 14 extends to the inner cavity of the positioning groove 15.
[0024] See also Figure 1 、 Figure 2 and Figure 3 A tooth plate 16 is welded on the surface of the bridge plate 1. By setting the tooth plate 16, the power energy can be effectively absorbed and dispersed, and the completion quality of the overall structure of the bridge plate 1 can be improved. Teeth 17 are fixedly set on the surface of the bridge plate 1. The tooth plate 16 and the teeth 17 are engaged with each other. An adjustment groove 18 is opened on the surface of the bridge plate 1. A screw 19 is welded on the surface of the tooth plate 16. The surface thread sleeve of the screw 19 is provided with a limit sleeve 20.
[0025] See also Figure 1The number of the card plates 3 is several. By setting the card plates 3, it is ensured that the supported object is stably supported, which facilitates the guidance and limitation of the position of the surface mounting structure. The card plates 3 are arranged at equal distances.
[0026] See also Figure 5 The shock-absorbing spring 7 is movably mounted on the surface of the damper 8, and the elastic member 5 is movably connected to the inner wall of the bridge plate 1. By setting the elastic member 5, the bottom surface can be shielded and protected, and the applicability is strong.
[0027] When in use, a number of elongated hole guide grooves 10 are evenly distributed in the top surface of the notch of the bracket 2, and a fixed pin shaft 9 is inserted into the inside of each guide groove 10. The rotating fixed pin shaft 9 makes the fixed plate 11 rotate in a circle, which is staggered with the guide groove 10, further increasing the stability of the fixed plate 11 pre-embedded and fixed in sequence. An elliptical positioning groove 15 is provided in the middle of the fixed pin shaft 9, and one end of the positioning block 14 is respectively inserted into the corresponding positioning groove 15 for engagement and fixing, which can assist in positioning the fixed pin shaft 9, thereby increasing the stability of the card plate 3 during the shaking process. When a car passes by on a pair of bridge plates 1, the bridge plate 1 and the longitudinal bracket 2 and the card plate 3 will be driven to shake, thereby increasing the inclination of the elastic member 5, driving the shock absorbing plate 6, the shock absorbing spring 7, and the damping The device 8 slides back and forth vertically, and the screw 19 guides and limits the bridge plate 1 to lateral shaking along the adjustment groove 18. The elastic parts 5 filled inside the bridge plate 1 can isolate impurities from the outside to avoid long-term contact with the internal surface. When the card plate 3 presses the elastic parts 5 at both ends to generate a large pressure, the shock-absorbing spring 7 and the damper 8 will distribute the large amount of pressure generated to the elastic parts 5 and return them to their original position. When the pressure inside the bridge plate 1 is large, it can automatically open. The elastic part 5 can use the external force amplitude such as vehicle load or natural wind pressure to squeeze these debris out of the expansion joint, thereby keeping its interior clean. The tooth plate 16 and the teeth 17 have a comb-teeth structure to reduce the noise generated when the vehicle passes. These designs can effectively absorb and disperse noise and friction area, thereby improving driving comfort.
[0028] In summary: the bridge expansion joint structure with damping and noise reduction solves the problem that debris can easily damage the expansion joint function and there are deficiencies in noise reduction through the cooperation of the bridge plate 1, the bracket 2, the clamping plate 3 and the adjustment mechanism 4.
Claims
1. A bridge expansion joint structure capable of damping and reducing noise, comprising a bridge plate (1), characterized in that: A bracket (2) is welded to the surface of the bridge plate (1), a clamping plate (3) is movably sleeved on the surface of the bracket (2), an adjustment mechanism (4) is provided on the opposite side of the bridge plate (1), the adjustment mechanism (4) comprises an elastic member (5), the elastic member (5) is fixedly connected to the clamping plate (3), a shock absorbing plate (6) is fixedly connected to the bottom of the elastic member (5), and a shock absorbing spring (7) and a damper (8) are fixedly installed between the shock absorbing plate (6) and the bridge plate (1).
2. The bridge expansion joint structure capable of damping and reducing noise according to claim 1, characterized in that: A fixing pin (9) is provided through the top of the card plate (3), guide grooves (10) are respectively provided on the inner walls of the bracket (2) and the card plate (3), and a fixing plate (11) is fixedly connected to the bottom of the fixing pin (9).
3. The bridge expansion joint structure capable of damping and reducing noise according to claim 2, characterized in that: The inner wall of the bracket (2) is provided with a groove (12), the inner wall of the groove (12) is fixedly connected with a compression spring (13), the surface of the compression spring (13) is fixedly connected with a positioning block (14), the surface of the fixed pin shaft (9) is provided with a positioning groove (15), and the positioning block (14) extends to the inner cavity of the positioning groove (15).
4. The bridge expansion joint structure capable of damping and reducing noise according to claim 1, characterized in that: A tooth plate (16) is welded on the surface of the bridge plate (1), teeth (17) are fixedly provided on the surface of the bridge plate (1), the tooth plate (16) and the teeth (17) are meshed with each other, an adjustment groove (18) is provided on the surface of the bridge plate (1), a screw (19) is welded on the surface of the tooth plate (16), and a limit sleeve (20) is provided on the surface of the screw (19).
5. The bridge expansion joint structure capable of damping and reducing noise according to claim 1, characterized in that: There are several card plates (3), and the card plates (3) are arranged at equal distances.
6. The bridge expansion joint structure capable of damping and reducing noise according to claim 1, characterized in that: The shock-absorbing spring (7) is movably sleeved on the surface of the damper (8), and the elastic member (5) is movably connected to the inner wall of the bridge plate (1).