Mechanical noise reduction device for municipal roads and bridges

Abstract

The utility model relates to the technical field of bridge noise reduction, and discloses a mechanical noise reduction device for a municipal road bridge, the mechanical noise reduction device for the municipal road bridge comprises a bridge base plane, a telescopic device and a noise reduction mechanism, the arc angle is designed to be smooth, so that vehicle tires can stably pass through, additional abrasion to the tires is avoided, and the noise reduction effect is good. The first connecting plate is connected with the buffer plate and other parts of the noise reduction mechanism, and it is ensured that the whole device has enough stability during noise reduction. According to the mechanical noise reduction device for the municipal road bridge, through the combined action of the buffer plate, the hydraulic device and the spring, when a vehicle passes, the buffer plate is compressed, the hydraulic device and the spring jointly absorb the impact force of the vehicle to the device, and noise generated by contact between tires and a bridge expansion joint is effectively reduced; meanwhile, due to the arc angle design of the buffer plates, the tires are in smooth transition during contact, impact during high-speed driving is reduced, and noise pollution caused by expansion joints is greatly reduced through the overall structure.

Description

Technical Field

[0001] This utility model relates to the field of bridge noise reduction technology, specifically a mechanical noise reduction device for municipal road bridges. Background Technology

[0002] In municipal road bridges, expansion joints are an important component of the bridge structure. They are mainly used to cope with the expansion and contraction of the bridge caused by factors such as temperature changes and load fluctuations. Bridges will experience slight displacement when the seasons change or when vehicles pass frequently. Expansion joints can absorb these displacements and prevent the bridge deck from cracking, the bridge structure from deforming, or stress concentration. Therefore, expansion joints have become an indispensable component in bridge structures.

[0003] In traditional expansion joint designs, the expansion device is usually higher than the bridge surface, forming a protrusion. When a vehicle drives over it, the tire will directly contact the expansion joint device, which not only easily causes impact and wear on the tire, resulting in tread damage, but also generates a lot of impact noise. The noise is more obvious when heavy vehicles pass by, becoming one of the main sources of bridge noise. This noise not only affects driving comfort, but also causes noise pollution to the surrounding environment. Utility Model Content

[0004] The purpose of this utility model is to provide a mechanical noise reduction device for municipal roads and bridges, so as to solve the problem of large noise generated by traditional telescopic devices in the above-mentioned background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical noise reduction device for municipal roads and bridges, comprising a bridge base, a telescopic device, and a noise reduction mechanism. The telescopic device is installed inside the bridge base, and a noise reduction mechanism is installed at the upper end of the telescopic device. The noise reduction mechanism includes a buffer plate, with a buffer plate at the upper end of the telescopic device. Fixing blocks are installed at both ends of the buffer plate, and an arc angle is provided at the front end of the buffer plate. A first connecting plate is installed at the lower end of the buffer plate. The bridge base provides the foundation support for the entire device, ensuring that the device can withstand the bridge load and the impact force when vehicles pass over it. The expansion joint allows the bridge to expand and contract freely with temperature changes or load variations, effectively relieving structural stress and preventing cracks and deformation. The noise reduction mechanism absorbs the impact noise from passing vehicles, reducing noise generated when tires contact the expansion joint. The buffer plate is compressed when a vehicle passes, reducing impact force through elastic deformation and effectively reducing noise propagation. The fixing block stabilizes the structure of the buffer plate, preventing displacement under repeated vehicle pressure. The rounded corners, through a smooth angle design, allow vehicle tires to pass smoothly, avoiding additional tire wear. The first connecting plate connects the buffer plate and other parts of the noise reduction mechanism, ensuring sufficient stability of the entire device during noise reduction.

[0006] Preferably, a noise reduction box is provided at the lower end of the first connecting plate. The noise reduction box has a movable groove inside. The noise reduction box provides protection and support for the hydraulic device and spring, preventing external debris from entering and affecting its operation. The movable groove provides space for the compression and rebound of the hydraulic device, so that the device can operate smoothly.

[0007] Preferably, a second connecting plate is provided on the lower side of the first connecting plate, and a hydraulic device is provided at the lower end of the second connecting plate. The second connecting plate securely connects the noise reduction mechanism and the telescopic device, improving the overall stability. The hydraulic device is compressed and provides a buffering effect when the vehicle passes by, reducing vibration and noise caused by tire contact.

[0008] Preferably, the outer ring of the hydraulic device is provided with a spring, and the bottom end of the hydraulic device is provided with a limit end. The spring provides a rebound force after the hydraulic device is compressed, so that the buffer plate quickly returns to its original position. The limit end restricts the movement range of the hydraulic device and the spring, preventing excessive compression or rebound from causing structural damage.

[0009] Preferably, the second connecting plate has a mounting hole at the corner. The second connecting plate and the telescopic device are connected by fastening bolts. The mounting hole provides a convenient fixing method, enabling the device to be quickly installed and disassembled. The fastening bolts firmly connect the second connecting plate to the telescopic device, ensuring that the structure will not loosen during use.

[0010] Preferably, positioning pins are provided at the four corners of the lower end of the buffer plate. The positioning pins provide position fixation when the buffer plate rebounds, preventing the buffer plate from shifting.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The mechanical noise reduction device for municipal roads and bridges uses the combined action of a buffer plate, hydraulic device and spring. When a vehicle passes over it, the buffer plate is compressed, and the hydraulic device and spring absorb the impact force of the vehicle on the device, effectively reducing the noise generated by the contact between the tire and the bridge expansion joint. At the same time, the arc design of the buffer plate makes the tire transition smoothly when in contact, reducing the impact when driving at high speed. The overall structure greatly reduces the noise pollution caused by the expansion joint.

[0013] 2. The mechanical noise reduction device for municipal roads and bridges uses a fixing block to firmly fix the buffer plate above the telescopic device, ensuring that the buffer plate will not shift when vehicles repeatedly run over it. The limiting end prevents the hydraulic device and spring from exceeding their range of motion due to frequent compression, protecting the device from excessive movement and further extending the service life of the overall device. The positioning pin is used to fix the position of the buffer plate, ensuring that it accurately resets when it rebounds, avoiding displacement and wear.

[0014] 3. The mechanical noise reduction device for municipal roads and bridges has a compact overall structure and is easy to maintain. The buffer plate, the first connecting plate and the second connecting plate are tightly connected to the expansion device by fastening bolts to form a stable overall structure. The mounting holes provide a convenient way to fix the entire structure. The noise reduction box and the movable groove provide sufficient space for the hydraulic device to ensure that it moves smoothly during compression and rebound, is not easily obstructed, and is convenient for later inspection and maintenance. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the mechanical noise reduction device for roads and bridges according to this utility model;

[0016] Figure 2 This is a schematic diagram of the bottom structure of the noise reduction mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the shock absorption device of this utility model;

[0018] Figure 4 This utility model Figure 1 A magnified view of A in the middle.

[0019] In the diagram: 1. Bridge base; 2. Expansion joint; 3. Noise reduction mechanism; 301. Buffer plate; 302. Fixing block; 303. Arc angle; 304. First connecting plate; 305. Noise reduction box; 306. Movable groove; 307. Second connecting plate; 308. Hydraulic device; 309. Spring; 310. Limiting end; 311. Mounting hole; 312. Fastening bolt; 313. Positioning pin. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4This utility model provides a technical solution: a mechanical noise reduction device for municipal road bridges. The device includes a bridge base 1, a telescopic device 2, and a noise reduction mechanism 3. The telescopic device 2 is installed inside the bridge base 1, and the noise reduction mechanism 3 is installed at the upper end of the telescopic device 2. The noise reduction mechanism 3 includes a buffer plate 301. The buffer plate 301 is installed at the upper end of the telescopic device 2, and fixing blocks 302 are installed at both ends of the buffer plate 301. An arc angle 303 is provided at the front end of the buffer plate 301, and a first connecting plate 304 is provided at the lower end of the buffer plate 301. The bridge base 1 serves as the basic structure of the entire device, bearing the load of the bridge and vehicles through sturdy materials and support, ensuring the stability of the device during use. The telescopic device 2 allows the bridge... The system expands and contracts under temperature and load changes, absorbing the stress of the bridge structure through its elastic deformation to prevent cracks and deformation. The noise reduction mechanism 3 absorbs the impact noise when vehicles pass by. Through its internal buffer design, it significantly reduces the noise generated when the tires come into contact with the expansion device. The buffer plate 301 is made of elastic material. When a vehicle passes by, it is compressed and releases the impact force, converting noise and vibration into elastic deformation and gradually dissipating it. The fixing block 302 stabilizes the buffer plate with a sturdy material to prevent displacement when the vehicle repeatedly runs over it. The arc angle 303 adopts a smooth design, allowing the tires to transition smoothly at high speeds and effectively avoiding tire wear. The first connecting plate 304 connects the buffer plate and other parts of the noise reduction mechanism, and realizes the gradual transmission of buffer force through structural support.

[0022] A noise reduction box 305 is provided at the lower end of the first connecting plate 304. The noise reduction box 305 has an internal movable groove 306. A second connecting plate 307 is provided on the lower side of the first connecting plate 304. A hydraulic device 308 is provided at the lower end of the second connecting plate 307. The noise reduction box 305 provides protection for the hydraulic device and spring, preventing external debris from entering and interfering with their normal operation. The movable groove 306 provides space for the hydraulic device to compress and rebound, ensuring smooth operation. The second connecting plate 307 combines the noise reduction mechanism with the telescopic device, absorbing and transmitting vibrations to the bridge foundation through a stable structure. The hydraulic device 308 is compressed when impacted by a vehicle, absorbing the impact force through the damping effect of hydraulic oil or gas and gradually releasing it, reducing noise propagation.

[0023] A spring 309 is provided on the outer ring of the hydraulic device 308. A limit end 310 is provided at the bottom of the hydraulic device 308. A mounting hole 311 is provided at the corner of the second connecting plate 307. The second connecting plate 307 and the telescopic device 2 are connected by fastening bolts 312. A positioning pin 313 is provided at the four corners of the lower end of the buffer plate 301. The spring 309 provides elastic force after the hydraulic device is compressed, so that the buffer plate returns to its initial state. The limit end 310 sets the limit for the movement range of the hydraulic device and the spring, preventing damage to the internal structure caused by excessive compression or rebound. The mounting hole 311 allows the device to be quickly fixed through convenient design, improving the efficiency of installation and disassembly. The fastening bolt 312 firmly connects the second connecting plate and the telescopic device, maintaining the structural integrity under vibration and impact conditions. The positioning pin 313 provides position control when the buffer plate rebounds, preventing the buffer plate from shifting through precise positioning.

[0024] Working Principle: The core structure of this device consists of the bridge base surface 1, the expansion joint 2, and the noise reduction mechanism 3. The expansion joint 2 is installed inside the bridge base surface 1, and the noise reduction mechanism 3 is installed at the upper end of the expansion joint 2. The noise reduction mechanism 3 contacts the vehicle through a buffer plate 301. The buffer plate 301 is compressed when the vehicle passes over it. Through the linkage of the hydraulic device 308 and the spring 309, the buffer and noise reduction function is achieved. Fixed blocks 302 are provided at both ends of the buffer plate 301 to stabilize it. The front end of the buffer plate 301 is designed with an arc angle 303 to ensure a smooth transition for the vehicle tires and reduce tire wear during high-speed driving. The lower end of the buffer plate 301 is connected to a first connecting plate 304. The noise reduction box 305 at the lower end of the first connecting plate 304 has a movable groove 3 inside. 06. To provide movement space for the hydraulic device 308, the lower side of the first connecting plate 304 is connected to the second connecting plate 307. The hydraulic device 308 is installed at the lower end of the second connecting plate 307. A spring 309 is installed on the outer ring of the hydraulic device 308 to reduce noise through compression and rebound. A limit end 310 is provided at the bottom of the hydraulic device 308 to prevent the hydraulic device 308 and the spring 309 from moving excessively and to ensure that the buffer plate 301 does not fall out of place. Positioning pins 313 are provided at the four corners of the buffer plate 301 to ensure that the buffer plate 301 does not deviate from the track when rebounding. The mounting hole 311 is located at the corner of the second connecting plate 307 to fix the structure. The second connecting plate 307 is connected to the telescopic device 2 by fastening bolts 312 to provide structural stability.

[0025] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A municipal road and bridge mechanical noise reduction device, comprising a bridge base surface (1), an expansion device (2) and a noise reduction mechanism (3), characterized in that: The inside of the bridge base (1) is provided with a telescopic device (2), the upper end of the telescopic device (2) is provided with a noise reduction mechanism (3), the noise reduction mechanism (3) comprises a buffer plate (301), the upper end of the telescopic device (2) is provided with a buffer plate (301), the left and right ends of the buffer plate (301) are provided with fixed blocks (302), the front end of the buffer plate (301) is provided with an arc corner (303), and the lower end of the buffer plate (301) is provided with a first connecting plate (304).

2. The mechanical noise reduction device for municipal roads and bridges according to claim 1, characterized in that: The lower end of the first connecting plate (304) is provided with a noise reduction box (305), and the inside of the noise reduction box (305) is provided with a movable groove (306).

3. The mechanical noise reduction device for municipal roads and bridges according to claim 2, characterized in that: The lower side of the first connecting plate (304) is provided with a second connecting plate (307), and the lower end of the second connecting plate (307) is provided with a hydraulic device (308).

4. The mechanical noise reduction device for municipal roads and bridges according to claim 3, characterized in that: The outer ring of the hydraulic device (308) is provided with a spring (309), and the bottom end of the hydraulic device (308) is provided with a limiting end (310).

5. The mechanical noise reduction device for municipal roads and bridges according to claim 3, characterized in that: The upper corner of the second connecting plate (307) is provided with a mounting hole (311), and the second connecting plate (307) and the telescopic device (2) are connected through a fastening bolt (312).

6. The mechanical noise reduction device for municipal roads and bridges according to claim 1, characterized in that: The lower end of the buffer plate (301) is provided with a positioning pin (313) at four corners.

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