CN219032922U - Noise-reduction vibration-reduction bridge expansion device - Google Patents
Noise-reduction vibration-reduction bridge expansion device Download PDFInfo
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- CN219032922U CN219032922U CN202320144014.5U CN202320144014U CN219032922U CN 219032922 U CN219032922 U CN 219032922U CN 202320144014 U CN202320144014 U CN 202320144014U CN 219032922 U CN219032922 U CN 219032922U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The utility model discloses a noise-reducing vibration-damping bridge expansion device, which comprises a movable comb plate, wherein a noise-reducing vibration-damping mechanism is arranged below the movable comb plate and comprises an arched elastic steel plate and a supporting box body, the arched top of the arched elastic steel plate is fixedly connected with the movable comb plate, two sides of the arched bottom of the arched elastic steel plate are respectively provided with a first through hole and a second through hole which are axially arranged along the arch, two pairs of perforations corresponding to the first through holes and the second through holes are arranged at the bottom of the side wall of the supporting box body, the first bolts and the second bolts realize the fixed connection of the arched elastic steel plate and the supporting box body, so that the upper part of the supporting box body is abutted against the lower part of the movable comb plate, and the arched elastic steel plate is kept to have precompression the lower part of the movable comb plate. The utility model can lead the arched elastic steel plate to be preloaded in the supporting box body, keep the precompression of the arched elastic steel plate on the lower part of the movable comb plate, and cause the vibration of the arched elastic steel plate when the vehicle loads the movable comb plate, and the precompression of the elastic steel plate gives the comb plate a counter vibration force, thereby achieving the effects of noise reduction and vibration reduction.
Description
Technical Field
The utility model relates to the field of highway bridge expansion devices, in particular to a noise-reduction vibration-reduction bridge expansion device.
Background
With the development of urban construction in China, urban overpasses and viaducts are more and more, telescopic devices for urban bridges are more and more, noise is generated when vehicles pass through the telescopic devices, and the generated noise seriously interferes with the normal life of surrounding residents, so that the physical and psychological health of citizens is endangered.
At present, the telescopic device for the domestic urban bridge mainly comprises a modular telescopic device, a comb plate type telescopic device, a seamless telescopic device and the like. In the aspect of noise reduction, for the analog-digital type telescopic device, the noise of the single-slit type telescopic device is not obvious, but the rigidity is not great; the large-scale modular bridge expansion device has large integral rigidity, but larger noise. For the comb plate type telescopic device, the comb plate type telescopic device is usually installed in one meter and one unit, and the shapes of the comb teeth are changed, such as saw teeth, trapezoidal teeth or circular teeth, so that the advancing direction of a vehicle is not perpendicular to the comb teeth, the impact of wheels on the comb teeth is reduced, and a certain vibration and noise reduction effect is achieved. However, the telescopic device has large overall rigidity and large noise due to large plane size, and the impact noise is extremely large after the steel plate loosens or the steel plate hangs in the air. For the seamless telescopic device, an elastomer or rubber composite material is used, the rigidity is small, the noise reduction effect is relatively good, the application range is small, the seamless telescopic device is generally used for bridges with the telescopic capacity of less than 40mm, in addition, the durability problem is outstanding under the condition of heavy traffic of a high-speed or urban main road, and the seamless telescopic device is not suitable for the condition of heavy traffic.
Therefore, the existing bridge expansion device still has the defects in noise reduction and vibration reduction, and further improvement is needed. How to create a new noise-reduction vibration-reduction bridge expansion device, the device can utilize the pre-pressure of the elastic steel plate to give the comb plate a counter vibration force, plays roles in buffering and vibration reduction, has simple, reasonable and reliable structure, high strength and good stability, is convenient to replace, and becomes a target of urgent need of improvement in the current industry.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the noise-reduction vibration-reduction bridge expansion device, which utilizes the pre-pressure of the elastic steel plate to give the comb plate a counter vibration force to play a role in buffering and vibration reduction, has the advantages of simple, reasonable and reliable structure, high strength, good stability and convenient replacement, and overcomes the defects of the traditional bridge expansion device.
In order to solve the technical problems, the utility model provides a noise-reducing vibration-reducing bridge expansion device, which comprises a movable comb plate and a fixed comb plate arranged opposite to the movable comb plate, wherein the movable comb plate is fixed on a first bridge beam body, the fixed comb plate is fixed on a second bridge beam body, comb teeth of the movable comb plate and the fixed comb plate are mutually intersected and provided with gaps, a noise-reducing vibration-reducing mechanism is arranged below the movable comb plate, the noise-reducing vibration-reducing mechanism comprises an arched elastic steel plate and a supporting box body, the arched top of the arched elastic steel plate is fixedly connected with the movable comb plate, the two sides of the arch bottom are respectively provided with a first through hole and a second through hole which are arranged along the arch axial direction, the bottom of the side wall of the supporting box body is provided with a first perforation and a second perforation which correspond to the first through hole, the bottom of the side wall of the supporting box body is also provided with a third perforation and a fourth perforation which correspond to the second through hole, a first bolt sequentially penetrates through the first perforation, the first through hole and the second perforation, and when a second bolt sequentially penetrates through the third perforation, the second through hole and the fourth perforation, the supporting box body upper part is in butt joint with the lower part of the movable comb plate, and the arch elastic steel plate is kept to have precompression on the lower part of the movable comb plate.
Further improved, the arched elastic steel plate is composed of at least two arched plates, the arched angles of the arched plates are the same, the arched bottom of the lowest arched plate is set to be an inner-rolling type rolling lug structure, and the first through hole and the second through hole are formed.
Further improved, the arched elastic steel plate consists of five arched plates, and the bottom widths of the five arched plates are sequentially reduced from bottom to top.
Further improved, the peripheries of the five arch plates are also fastened together through two symmetrically arranged hoops.
Further improved, the arched top of the arched elastic steel plate is fixed with the movable comb plate through a cap bolt and a nut.
Further improved, counter bores are formed in the movable comb plate, and the capped bolts penetrate through the counter bores and through holes of the arched elastic steel plates to be matched with nuts, so that the arched elastic steel plates are fixedly connected with the movable comb plate.
Further improved, a buffer noise reduction plate is stuck to the lower part of the movable comb plate.
Further improved, the buffering noise reduction plate is made of rubber plates.
Further improved, the teeth of the movable comb plate and the fixed comb plate adopt mutually matched sharp curve teeth ends.
Further improved, three noise-reducing and vibration-reducing mechanisms are arranged below the movable comb plate, and the three noise-reducing and vibration-reducing mechanisms are arranged in a delta shape.
With such a design, the utility model has at least the following advantages:
1. according to the noise-reduction vibration-reduction bridge expansion device, the arched elastic steel plate and the supporting box body are arranged, through holes are respectively formed in two sides of the lower portion of the steel plate, the through holes correspond to the through holes in the side wall of the supporting box body, the arched elastic steel plate, the supporting box body and the movable comb plate are fixed under the penetrating action of bolts, the arched elastic steel plate is pre-pressed in the supporting box body, the arched elastic steel plate is kept to have certain pre-pressure on the lower portion of the movable comb plate, when a vehicle loads on the movable comb plate, vibration of the arched elastic steel plate below is caused, and the pre-pressure of the elastic steel plate gives a counter vibration force to the comb plate, so that the noise-reduction vibration-reduction effect is achieved. The arched elastic steel plate has the characteristics of steel and a spring, and has excellent rigidity and elasticity, so that the spring is not easy to damage while vibration reduction is realized, and the structure is stable and reliable.
2. The damping and noise reducing plate is stuck to the lower part of the movable comb plate, so that the movable comb plate has the characteristic of absorbing energy, the vibration reduction and buffering effects can be achieved, and the noise reduction and vibration reduction conditions of the comb plate can be effectively further improved.
3. Still through setting the broach of broach board to sharp-pointed curve tooth end, can increase the area of contact of wheel and telescoping device seam, the transition is smooth-going, effectively absorbs the impact kinetic energy of vehicle tire, can avoid the vehicle to pass through the direct impact of wheel and telescoping device when the telescoping device, further plays the damping effect of making an uproar falls.
4. The utility model also realizes the connection of the arched elastic steel plate and the movable comb plate by adopting the cap bolt, and the movable comb plate is fixed as the supporting box body is anchored in the concrete, so that the movable comb plate can be replaced simply and conveniently by only screwing out the cap bolt when the movable comb plate is replaced.
Drawings
The foregoing is merely an overview of the present utility model, and the present utility model is further described in detail below with reference to the accompanying drawings and detailed description.
Fig. 1 is a top view of the noise reduction and vibration reduction type bridge expansion apparatus of the present utility model.
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1.
Fig. 4 is an enlarged view of a portion of one of the noise and vibration reduction mechanisms of fig. 2.
Fig. 5 is an enlarged view of a portion of one of the noise and vibration reduction mechanisms of fig. 3.
Wherein: 1. the device comprises a movable comb plate, a counter bore, a cap bolt, a nut, a fixed comb plate, an arched elastic steel plate, a first through hole, a second through hole, a hoop, a supporting box body, a cap bolt, a first through hole, a second through hole, a first bolt and a buffering noise reduction plate.
Detailed Description
Referring to fig. 1, the noise-reducing vibration-damping bridge expansion device of the embodiment comprises a movable comb plate 1 and a fixed comb plate 2 which is arranged opposite to the movable comb plate, wherein the movable comb plate 1 is fixed on a first bridge beam body, the fixed comb plate 2 is fixed on a second bridge beam body through bolts, comb teeth of the movable comb plate 1 and comb teeth of the fixed comb plate 2 are mutually intersected and provided with gaps, and a noise-reducing vibration-damping mechanism is arranged below the movable comb plate 1.
Referring to fig. 2 to 5, the noise and vibration reduction mechanism includes an arched elastic steel plate 3 and a supporting case 4. The arched top of the arched elastic steel plate 3 is fixedly connected with the movable comb plate 1, for example, through the cooperation of bolts and nuts. In this embodiment, the movable comb plate 1 is provided with a counter bore 11, and the cap bolt 12 passes through the counter bore 11 and the through hole on the arched elastic steel plate 3 to cooperate with the nut 13, so as to realize the fixed connection between the arched elastic steel plate 3 and the movable comb plate 1. The connection mode facilitates the installation and the disassembly of the movable comb plate 1, and the top surface of the bolt 12 is lower than the top of the movable comb plate 1, so that the flatness of the upper part of the comb plate is ensured.
The arch-shaped elastic steel plate 3 has an arch-shaped height greater than the inner height of the supporting case 4.
The two sides of the arched bottom of the arched elastic steel plate 3 are respectively provided with a first through hole 31 and a second through hole 32 which are axially arranged along the arch, the bottom of the side wall of the supporting box body 4 is provided with a first through hole 41 and a second through hole 42 which correspond to the first through hole 31, and the bottom of the side wall of the supporting box body 4 is also provided with a third through hole and a fourth through hole (not shown in the figure) which correspond to the second through hole 32. During installation, the supporting box body 4 is installed upwards from the bottom of the arched elastic steel plate 3, a certain pressure is applied to the arched elastic steel plate 3, when the first bolt 5 sequentially penetrates through the first through hole 41, the first through hole 31 and the second through hole 42 and the second bolt sequentially penetrates through the third through hole, the second through hole 32 and the fourth through hole, the supporting box body 4 is abutted with the lower part of the movable comb plate 1, the arched elastic steel plate 3 is preloaded in the supporting box body 4 and is fixed, and the arched elastic steel plate 3 is kept to have a certain pre-pressure on the lower part of the movable comb plate 1. When the vehicle is loaded on the movable comb plate 1, vibration of the arched elastic steel plate 3 below is caused, and pre-pressure of the elastic steel plate gives a counter vibration force to the comb plate, so that the effects of noise reduction and vibration reduction are achieved.
In a preferred embodiment, the arch-shaped elastic steel plate 3 is composed of at least two arch-shaped plates, for example, in this embodiment, five arch-shaped plates are stacked, the arch angle of each arch-shaped plate is the same, the arch bottom of the lowest arch-shaped plate is set to be an inner-rolling ear structure, and the first through hole 31 and the second through hole 32 are formed. And the bottom widths of the five arch plates are sequentially reduced from bottom to top, and the whole steel plate elasticity is utilized to give the counter vibration force to the movable comb plate.
The outer circumferences of the five arch plates are also fastened together by two symmetrically arranged hoops 33, forming an integral steel plate elasticity.
In a more preferred embodiment, a buffering noise reduction plate 6 is adhered to the lower part of the movable comb plate 1. The buffering noise reduction plate 6 is made of rubber plates. Of course, other materials with buffer function can be used, as long as the buffer function is provided.
In this embodiment, the teeth of the movable comb plate 1 and the fixed comb plate 2 adopt sharp curved teeth ends that are matched with each other, as shown in fig. 1. By utilizing the characteristics of the sharp curve tooth end and the oblique angle impact of the wheel, the contact area of the seam and the tire is increased, the transition is smooth, the impact kinetic energy of the vehicle tire is effectively absorbed, the impact of the wheel on the comb plate is reduced, and the noise value is further reduced.
And three noise-reducing and vibration-reducing mechanisms are arranged below each movable comb plate 1, are arranged in a delta shape, and are stable and reliable in structure. In use, the supporting box body 4 is anchored in the concrete, thereby fixing the movable comb plate 1. When the movable comb plate 1 is replaced, only the capped bolts 12 on the arched elastic steel plates 3 are needed to be unscrewed, the movable comb plate 1 can be detached to be replaced, and the aim of quickly replacing the comb plate is fulfilled.
The arched elastic steel plate 3 has stronger elasticity, can stretch up and down along with the vibration generated by the impact of the automobile tire on the movable comb plate 1, and in the process, the arched elastic steel plate 3 deforms when being subjected to the vertical pressure transmitted downwards by the movable comb plate 1 due to the existence of the pre-pressure, and then gives an upward counter vibration force to the movable comb plate 1, thereby playing the roles of buffering and vibration reduction. The vibration condition of the comb plate can be effectively improved by further playing a role in noise reduction through bonding the buffering noise reduction plate below the movable comb plate 1 by utilizing the characteristic that the rubber material absorbs energy.
The movable comb plate and the fixed comb plate are provided with curved tooth ends, so that the contact area between the wheels and the seam of the telescopic device is increased, the transition is smooth, the impact kinetic energy of the vehicle tire is effectively absorbed, the direct impact of the wheels and the telescopic device when the vehicle passes through the telescopic device can be avoided, and the noise and vibration reduction effect is further achieved. The noise-reducing vibration-reducing bridge expansion device is simple in structure, stable, reliable, convenient to replace and low in cost.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model in any way, and some simple modifications, equivalent variations or modifications can be made by those skilled in the art using the teachings disclosed herein, which fall within the scope of the present utility model.
Claims (10)
1. The utility model provides a damping bridge telescoping device falls, includes movable broach board and rather than the fixed broach board that sets up relatively, movable broach board is fixed on first bridge roof beam body, fixed broach board is fixed on second bridge roof beam body, movable broach board and fixed broach board's broach intercrossing and have the gap, its characterized in that, movable broach board's below is equipped with the damping mechanism that falls, damping mechanism falls includes arch elastic steel plate and supporting box body, arch elastic steel plate's arch top with movable broach board fixed connection, the both sides of its arch bottom are equipped with respectively along arch axial first through-hole and second through-hole that sets up, supporting box body's lateral wall bottom be equipped with first perforation and the second perforation that corresponds of first through-hole, first bolt run through first perforation, first through-hole and second perforation in proper order, and second bolt run through third perforation, second perforation in proper order when the second bolt runs through the third perforation, fourth perforation, realize that the arch has the arch is to hold down with the movable part of the arch steel plate has the prefabricated part under the arch.
2. The noise-reducing vibration-damping bridge expansion device according to claim 1, wherein the arched elastic steel plate is composed of at least two arched plates, the arched angles of the arched plates are the same, and the arched bottom of the lowest arched plate is provided with an inner-rolling type rolling lug structure, so that the first through hole and the second through hole are formed.
3. The noise-reducing vibration-damping bridge expansion device according to claim 2, wherein the arch-shaped elastic steel plate is composed of five arch-shaped plates, and the bottom widths of the five arch-shaped plates are sequentially reduced from bottom to top.
4. A noise-reducing vibration-damping bridge extension apparatus according to claim 3, wherein the outer circumferences of the five arch-shaped plates are further fastened together by two symmetrically arranged hoops.
5. The noise-reducing vibration-damping bridge expansion device according to claim 1, wherein the arched top of the arched elastic steel plate is fixed with the movable comb plate through cap bolts and nuts.
6. The noise-reducing vibration-damping bridge expansion device according to claim 5, wherein the movable comb plate is provided with a counter bore, and the capped bolt penetrates through the counter bore and the through hole of the arched elastic steel plate to be matched with a nut, so that the arched elastic steel plate is fixedly connected with the movable comb plate.
7. The noise-reducing vibration-damping bridge extension apparatus according to any one of claims 1 to 6, wherein a buffering noise-reducing plate is attached to a lower portion of the movable comb plate.
8. The noise-reducing vibration-damping bridge expansion device according to claim 7, wherein the buffering noise-reducing plate is made of rubber plate material.
9. The noise-reducing vibration-damping bridge telescoping device according to claim 7, wherein the teeth of the movable and fixed comb plates are sharp curved teeth ends that are matched with each other.
10. The noise-reducing vibration-damping bridge expansion device according to claim 7, wherein three noise-reducing vibration-damping mechanisms are arranged below the movable comb plate, and the three noise-reducing vibration-damping mechanisms are arranged in a delta shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320144014.5U CN219032922U (en) | 2023-02-07 | 2023-02-07 | Noise-reduction vibration-reduction bridge expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320144014.5U CN219032922U (en) | 2023-02-07 | 2023-02-07 | Noise-reduction vibration-reduction bridge expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219032922U true CN219032922U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320144014.5U Active CN219032922U (en) | 2023-02-07 | 2023-02-07 | Noise-reduction vibration-reduction bridge expansion device |
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| Country | Link |
|---|---|
| CN (1) | CN219032922U (en) |
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2023
- 2023-02-07 CN CN202320144014.5U patent/CN219032922U/en active Active
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