A bridge wind-resistant noise-reducing louver barrier

Abstract

The utility model discloses a high level bridge wind resistance noise reduction louver screen relates to high level bridge screen structure field, including steel structure frame, multiple rotatable windproof sound insulation flabellums are equipped with on steel structure frame along the height direction equidistance, two connecting rods are symmetrically equipped on multiple windproof sound insulation flabellums, two connecting rods are all hinged with multiple windproof sound insulation flabellums, and the top of steel structure frame is equipped with wind power drive arrangement, and wind power drive arrangement is connected with the top of two connecting rods all, and can drive connecting rod and move up, and the bottom of connecting rod is equipped with reset device, can utilize the angle regulation of wind power direct drive windproof sound insulation flabellum, realizes the automatic switching of low -speed noise reduction and high -speed wind resistance, and has reliability and environmental adaptability simultaneously, thereby solves the problem that existing fixed type wind screen needs manual regulation blade angle, and the effect of sealing noise reduction is not good, and the problem of response lag.

Description

Technical Field

[0001] This utility model relates to the field of elevated bridge barrier structures, specifically a wind-resistant and noise-reducing louver barrier for elevated bridges. Background Technology

[0002] With the acceleration of urbanization, elevated bridges, as the main arteries of urban traffic, are facing increasingly prominent issues of noise pollution and structural safety under extreme weather conditions. Traditional elevated bridge noise barriers are mostly fixed structures, which can block noise to a certain extent, but require manual intervention and lack wind speed sensing and automatic adjustment mechanisms. They are difficult to quickly switch to wind-resistant mode when strong winds suddenly occur, resulting in a delayed response and potential safety hazards.

[0003] Intelligent adjustable barriers require a power supply system and electronic control equipment, which can lead to problems such as lightning strike damage, circuit failures, and high maintenance costs. Their reliability is also insufficient, especially in remote areas or under extreme weather conditions.

[0004] Therefore, there is an urgent need for an adaptive barrier system that requires no external energy and is driven entirely by wind power, and that achieves closed-loop control of "wind speed sensing - power transmission - angle adjustment" through a purely mechanical structure. Utility Model Content

[0005] The purpose of this invention is to provide a louvered barrier for wind-resistant and noise-reducing elevated bridges. It can directly drive the angle adjustment of the windproof and sound-insulating blades using wind power, achieving automatic switching between low-speed noise reduction and high-speed wind resistance. It also has both reliability and environmental adaptability, thereby solving the problems of existing fixed wind barriers that require manual adjustment of blade angle, poor sealing and noise reduction effect, and slow response.

[0006] The above-mentioned optimized structure of this utility model is achieved through the following technical solution: a wind-resistant and noise-reducing louver barrier for elevated bridges, comprising a steel structure frame, wherein a plurality of rotatable windproof and sound-insulating winglets are provided at equal intervals along the height direction on the steel structure frame, and two connecting rods are symmetrically provided on the plurality of windproof and sound-insulating winglets, the two connecting rods being hinged to the plurality of windproof and sound-insulating winglets, a wind-driven device is provided at the top of the steel structure frame, the wind-driven device being connected to the top of the two connecting rods and being able to drive the connecting rods to move upward, and a reset device is provided at the bottom of the connecting rods.

[0007] In some embodiments, the steel structure frame includes two symmetrical columns, with load-bearing beams at the top of the two columns, and a plurality of rotatable windproof and soundproof winglets spaced equally between the two columns.

[0008] In some embodiments, the wind-driven device includes a windmill rotatably mounted on the top of the load-bearing beam. A rotating gear is connected to the bottom of the windmill and is located inside the load-bearing beam. A reduction gear set is provided inside the load-bearing beam and meshes with the rotating gear. A transmission shaft is transversely provided inside the load-bearing beam. Both ends of the transmission shaft are hinged to the tops of two connecting rods, and a transmission gear is sleeved on the transmission shaft, meshing with the reduction gear set.

[0009] In some embodiments, a limiting device is further included, which is disposed between the drive shaft and the load-bearing beam. The limiting device includes a rotating disk, which is coaxially sleeved on the drive shaft and hinged to the top of the connecting rod. The rotating disk is provided with a limiting groove, and the load-bearing beam is provided with a limiting rod, which passes through the limiting groove.

[0010] In some embodiments, the limiting groove is an arc-shaped groove of 180°.

[0011] In some embodiments, the reset device includes a reset cylinder disposed at the bottom of the column, a reset plate slidably disposed inside the reset cylinder, a reset spring disposed between the reset plate and the bottom wall of the reset cylinder, and a reset rod hinged to the bottom of the connecting rod.

[0012] In some embodiments, a protective device is also included, the protective device including a protective disk, the protective disk being coaxially disposed at the bottom of the windmill, the rotating gear being coaxially disposed outside the protective disk, and the protective disk and the rotating gear being connected by multiple shear pins.

[0013] In summary, this utility model has the following beneficial effects:

[0014] This invention utilizes a wind-driven device to rotate the windproof and sound-insulating blades, thereby adjusting the angle of the blades and enabling adaptive switching between low-wind-speed noise reduction mode and high-wind-speed stable flow mode. It also features operational stability and adaptability to complex working conditions, thus avoiding reliance on the power system, susceptibility to lightning strikes, high maintenance costs, and poor stability in harsh environments. Furthermore, it solves the problems of existing fixed wind barriers, such as the need for manual blade angle adjustment, poor sealing and noise reduction effects, and delayed response. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the wind-powered drive device of this utility model on a load-bearing beam;

[0017] Figure 3This is a schematic diagram of the rotation of the windproof and soundproof winglets of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 This utility model Figure 3 Enlarged view of point B in the middle;

[0020] Figure 6 This is a schematic diagram of the wind-powered drive device of this utility model in a load-bearing beam;

[0021] Figure 7 This utility model Figure 6 Enlarged view of point C in the middle;

[0022] Figure 8 This is a schematic diagram of the connection structure between the rotating disk, rotating gear, and protective device of this utility model.

[0023] In the diagram: 1. Steel frame structure; 11. Column; 12. Load-bearing beam; 2. Windproof and soundproof fins; 3. Connecting rod; 4. Wind-powered drive device; 41. Windmill; 42. Rotating gear; 43. Reduction gear set; 44. Drive shaft; 45. Drive gear; 5. Reset device; 51. Reset cylinder; 52. Reset plate; 53. Reset spring; 54. Reset rod; 6. Limiting device; 61. Rotating disk; 62. Limiting rod; 63. Limiting groove; 7. Protective device; 71. Protective disc; 72. Shear pin; 8. Bridge deck base. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] refer to Figure 1-8A louvered barrier for wind resistance and noise reduction on elevated bridges includes a steel frame 1. Multiple rotatable windproof and sound-insulating fins 2 are evenly spaced along the height of the steel frame 1. Two connecting rods 3 are symmetrically arranged on each of the windproof and sound-insulating fins 2, and both connecting rods 3 are hinged to the multiple windproof and sound-insulating fins 2. A wind-driven device 4 is located at the top of the steel frame 1, connected to the top of both connecting rods 3, and capable of driving the connecting rods 3 upwards. A reset device 5 is located at the bottom of the connecting rods 3. When wind acts on the wind-driven device 4, the connecting rods 3 are driven upwards, causing the multiple windproof and sound-insulating fins 2 to rotate, thereby adjusting the angle of the windproof and sound-insulating fins 2. The rotation range of the windproof and sound-insulating fins 2 varies depending on the wind speed, thus enabling the louvered barrier to adaptively switch between a low-wind-speed noise reduction mode and a high-wind-speed stable flow mode. The rotation angle of the windproof and sound-insulating wing 2 can be used to adjust the contact surface shape and air permeability between the louvered barrier and the crosswind. The windproof and sound-insulating wing 2 can automatically change its rotation angle according to the wind speed. When facing a small crosswind, the wind force is insufficient to drive the wind-driven device 4 to rotate, and the reset device 5 keeps the connecting rod 3 at its lower limit position, so that the windproof and sound-insulating wing 2 is kept in a 0° closed state, forming a continuous sound barrier to absorb vehicle noise. When facing a large crosswind, the windproof and sound-insulating wing 2 rotates to a state that is level with the direction of the wind, and the crosswind passes directly through the gaps between the windproof and sound-insulating wing 2, reducing the wind load force of the large crosswind on the louvered wind barrier, thereby reducing the effect of the louvered wind barrier on the bridge below, ensuring the normal design and operation of the bridge, and reducing the additional costs caused by resisting crosswinds.

[0026] In some embodiments, the steel structure frame 1 includes two symmetrical columns 11 forming a longitudinal support system. The top of the two columns 11 is provided with a load-bearing beam 12, which can be welded and fixed. The bottom end is anchored to the bridge deck base 8 to form a static balance structure. Multiple rotatable windproof and soundproof winglets 2 are provided at equal intervals between the two columns 11. The two ends of the windproof and soundproof winglets 2 can be connected to the columns 11 by rotating shafts, so that the windproof and soundproof winglets 2 can rotate between the two columns 11 along the central axis. The shaft can be connected to the connecting rod 3 by a shaft, thereby realizing the rotational connection between the connecting rod 3 and the windproof and soundproof winglets 2.

[0027] In some embodiments, the wind-driven device 4 includes a windmill 41, which is rotatably mounted on the top of the load-bearing beam 12. A rotating gear 42 is connected to the bottom of the windmill 41. The rotating gear 42 is connected to the windmill 41 via a shaft and rotates with the windmill 41. This is prior art and will not be described in detail here. The rotating gear 42 is located inside the load-bearing beam 12, and a reduction gear set 43 is provided inside the load-bearing beam 12. The reduction gear set 43 meshes with the rotating gear 42, and the reduction gear set 43 can reduce the rotational speed of the rotating gear 42. To meet practical needs, a transmission shaft 44 is provided transversely inside the load-bearing beam 12. The two ends of the transmission shaft 44 are respectively hinged to the top of the two connecting rods 3. By rotating the transmission shaft 44, the connecting rods 3 can be moved upward, thereby realizing the adjustment of the rotation angle of the windproof and soundproof wing 2. A transmission gear 45 is sleeved on the transmission shaft 44. The transmission gear 45 meshes with the reduction gear set 43. The transmission gear 45 and the reduction gear set 43 can be a bevel gear transmission structure. By rotating the transmission gear 45, the rotation of the transmission shaft 44 can be adjusted.

[0028] In some embodiments, a limiting device 6 is also included. The limiting device 6 is disposed between the transmission shaft 44 and the load-bearing beam 12, and can limit the rotation angle range of the windproof and soundproof wing 2 to -90°-90°. The limiting device 6 includes a rotating disk 61, which is coaxially sleeved on the transmission shaft 44 and hinged to the top of the connecting rod 3. The rotating disk 61 is provided with a limiting groove 63, and the load-bearing beam 12 is provided with a limiting rod 62. The limiting rod 62 passes through the limiting groove 63. The limiting groove 63 can be an arc groove of 180°. When the windproof and soundproof wing 2 rotates to 0° under the action of the reset device 5, the limiting rod 62 is located in the middle position of the limiting groove 63, so that the windproof and soundproof wing 2 can rotate to the maximum opening angle in the forward or reverse direction. At this time, the limiting rod 62 limits the limiting groove 63 to form a mechanical locking structure.

[0029] In some embodiments, the reset device 5 includes a reset cylinder 51, which is located at the bottom of the column 11. A reset plate 52 is slidably disposed inside the reset cylinder 51. A reset spring 53 is disposed between the reset plate 52 and the bottom wall of the reset cylinder 51. A reset rod 54 is hinged to the bottom of the reset plate 52 and the connecting rod 3. The reset spring 53 ensures that the connecting rod 3 is always in the lower limit position when there is low wind speed or no wind, so that the windproof and soundproof wing 2 is kept in a 0° closed state, thereby achieving the purpose of noise reduction.

[0030] In some embodiments, a protective device 7 is also included. The protective device 7 includes a protective disk 71, which is coaxially disposed at the bottom of the wind turbine 41 and can be connected by a shaft so that the protective disk 71 rotates with the wind turbine 41. This is prior art and will not be described in detail here. A rotating gear 42 is coaxially disposed on the outer side of the protective disk 71. The protective disk 71 and the rotating gear 42 are connected by multiple shear pins 72. Fixing grooves can be provided on the outer wall of the protective disk 71 and the inner wall of the rotating gear 42. The fixing grooves of the two correspond one-to-one. The two ends of the shear pins 72 are respectively inserted into the fixing grooves of the two. When the protective disk 71 rotates, it drives the shear pins 72 to rotate, thereby driving the rotating gear 42 to rotate. When the instantaneous wind speed experienced by the wind turbine 41 exceeds the design threshold, the shear pins 72 will automatically break, thereby protecting the wind power drive device 4.

[0031] The specific working principle is as follows:

[0032] When facing a small crosswind, the wind force is insufficient to drive the wind-driven device 4 to rotate. The reset device 5 keeps the connecting rod 3 at the lower limit position, so that the windproof and soundproof wing 2 is kept in a 0° closed state, forming a continuous sound barrier to absorb vehicle noise.

[0033] When facing strong crosswinds, the windmill 41 rotates, driving the transmission shaft 44 to rotate via the rotation gear 42 and reduction gear set 43. This causes the connecting rod 3 to move upward, stretching the return spring 53. Consequently, the windproof and soundproof wing 2 rotates to a state aligned with the direction of the wind, allowing the crosswind to pass directly through the gaps between the windproof and soundproof wing 2. This reduces the wind load force of the strong crosswind on the louvered wind barrier, thereby reducing the impact of the louvered wind barrier on the underlying bridge, ensuring the normal design and operation of the bridge, and reducing the additional costs caused by resisting crosswinds. When the wind volume decreases, the return spring 53 resets, causing the connecting rod 3 to move downward, thus causing the windproof and soundproof wing 2 to rotate in the opposite direction.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A louvered barrier for wind resistance and noise reduction on elevated bridges, characterized in that: The system includes a steel frame (1), on which a plurality of rotatable windproof and soundproof winglets (2) are provided at equal intervals along the height direction. Two connecting rods (3) are symmetrically provided on the plurality of windproof and soundproof winglets (2). The two connecting rods (3) are hinged to the plurality of windproof and soundproof winglets (2). A wind-driven device (4) is provided at the top of the steel frame (1). The wind-driven device (4) is connected to the top of the two connecting rods (3) and can drive the connecting rods (3) to move upward. A reset device (5) is provided at the bottom of the connecting rods (3).

2. The louvered barrier for wind-resistant and noise-reducing elevated bridges according to claim 1, characterized in that: The steel structure frame (1) includes two symmetrical columns (11), and a load-bearing beam (12) is provided on the top of the two columns (11). Multiple rotatable windproof and soundproof winglets (2) are provided at equal intervals between the two columns (11).

3. The louvered barrier for wind-resistant and noise-reducing elevated bridges according to claim 2, characterized in that: The wind-driven device (4) includes a windmill (41), which is rotatably mounted on the top of the load-bearing beam (12). A rotating gear (42) is connected to the bottom of the windmill (41). The rotating gear (42) is located inside the load-bearing beam (12). A reduction gear set (43) is provided inside the load-bearing beam (12). The reduction gear set (43) meshes with the rotating gear (42). A transmission shaft (44) is provided laterally inside the load-bearing beam (12). Both ends of the transmission shaft (44) are hinged to the top of the two connecting rods (3). A transmission gear (45) is sleeved on the transmission shaft (44). The transmission gear (45) meshes with the reduction gear set (43).

4. The louvered barrier for wind-resistant and noise-reducing elevated bridges according to claim 3, characterized in that: It also includes a limiting device (6), which is located between the transmission shaft (44) and the load-bearing beam (12). The limiting device (6) includes a rotating disk (61), which is coaxially sleeved on the transmission shaft (44) and hinged to the top of the connecting rod (3). The rotating disk (61) is provided with a limiting groove (63), and the load-bearing beam (12) is provided with a limiting rod (62), which passes through the limiting groove (63).

5. The louvered barrier for wind-resistant and noise-reducing elevated bridges according to claim 4, characterized in that: The limiting groove (63) is an arc-shaped groove of 180°.

6. The louvered barrier for wind-resistant and noise-reducing elevated bridges according to claim 2, characterized in that: The reset device (5) includes a reset cylinder (51), which is located at the bottom of the column (11). A reset plate (52) is slidably provided inside the reset cylinder (51). A reset spring (53) is provided between the reset plate (52) and the bottom wall of the reset cylinder (51). A reset rod (54) is hinged to the bottom of the connecting rod (3).

7. The louvered barrier for wind-resistant and noise-reducing elevated bridges according to claim 3, characterized in that: It also includes a protection device (7), which includes a protection disc (71), the protection disc (71) being coaxially disposed at the bottom of the windmill (41), and the rotating gear (42) being coaxially disposed outside the protection disc (71). The protection disc (71) and the rotating gear (42) are connected by multiple shear pins (72).

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