Shielding plate device for railway box girder

Abstract

The utility model provides a shutter device for railway box girder, including shutter body, buffer subassembly and support subassembly, buffer subassembly includes deflector and elastic piece, deflector is rotatingly connected to the outside of shutter body, the elastic piece is connected to the inside wall of deflector, the outside wall of deflector is provided with diversion trench, and the elastic piece is connected to the inside wall of deflector. The elastic piece is used for elastically pushing the shielding plate body to buffer airflow impact, and the supporting assembly is used for being supported between the shielding plate body and the box girder. According to the curtain board device for the railway box girder, the flow guide plates with the flow guide grooves are arranged on the outer side wall of the curtain board body, airflow can be guided to flow horizontally, formation of turbulent flow and vortex can be reduced, and when the flow guide plates swing horizontally due to impact of the airflow, the flow guide plates swing horizontally. The elastic piece is used for elastically pushing the outer side wall of the shielding plate body, then impact of vortex airflow on the shielding plate body is buffered, meanwhile, the supporting assembly is combined to effectively support the shielding plate body, and the stability of the shielding plate body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway box girder construction, and particularly relates to a shielding device for railway box girders. Background Art

[0002] Railway box girders are hollow-section beam structures widely used in long-span bridge construction due to their high flexural stiffness and load-bearing capacity. During construction, additional bridge deck ancillary works, such as protective walls, vertical walls, and shields, are constructed on the railway box girders. These support the construction of sidewalk decks, which are then supported by these walls. Shields, typically made of reinforced concrete, are installed on both sides of the box girder, acting as protective outer barriers.

[0003] In the existing technology, the design of most railway box girder shields mainly focuses on the ability to bear static loads, and does not fully consider the impact of strong external wind and airflow, resulting in poor wind resistance of the shields, which in turn affects the stability of the shields and even the box girder structure. Utility Model Content

[0004] The embodiment of the utility model provides a shielding plate device for railway box girders, which can buffer the impact of vortex airflow on the shielding plate body through the arrangement of the guide plate, and at the same time improve the stability of the shielding plate body in combination with the support assembly.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a shield device for a railway box girder, which is used to be connected to the outer edge of the box girder, including a shield body, a buffer assembly and a support assembly. The buffer assembly includes a guide plate and an elastic member. The guide plate is rotatably connected to the outer side of the shield body. The elastic member is connected to the inner side wall of the guide plate. The outer side wall of the guide plate is provided with an arc-shaped concave and horizontally extending guide groove. The guide groove is used to guide the airflow to flow horizontally. The elastic member is used to elastically push on the shield body to buffer the impact of the airflow. The support assembly is used to support between the shield body and the box girder.

[0006] As another embodiment of the present invention, the shielding plate body includes a lower plate body connected to the outer side of the box beam and an upper plate body connected above the lower plate body. The upper plate body is arranged to protrude from the lower plate body on the side close to the box beam. The bottom of the upper plate body is connected to a positioning column extending downward and plugged into the box beam. The buffer assembly is connected to the outer side of the lower plate body, and the support assembly is connected between the inner side wall of the upper plate body and the top wall of the box beam.

[0007] As another embodiment of the present invention, the buffer assembly includes two guide rods respectively connected to the outer side walls of the lower plate body and two groups of swing arms rotatably connected to the outer periphery of the guide rods. The guide rods extend in the up and down directions. Each group of swing arms includes two swing arms respectively arranged near the two ends of the guide rods, and the outer ends of the swing arms are hinged to the inner side wall of the guide plate.

[0008] As another embodiment of the present invention, both ends of the guide rod are respectively connected to the outer wall of the lower plate body through mounting blocks, and the outer periphery of the guide rod is provided with a first spring located between the swing arm and the mounting block. The first spring is used to elastically push the swing arm to buffer the impact of the airflow on the guide plate in the up and down directions.

[0009] As another embodiment of the present invention, the elastic member includes an inner support rod connected to the guide plate, an outer sleeve slidably connected to the outer periphery of the inner support rod, and a second spring sleeved on the outer periphery of the inner support rod and the outer sleeve. The outer end of the second spring is connected to the guide plate, and the inner end of the second spring is connected to the outer sleeve. The outer sleeve can swing horizontally with the guide plate and press against the baffle body. The second spring is used to elastically push the outer sleeve to keep the outer sleeve away from the guide plate.

[0010] As another embodiment of the present invention, the support assembly includes a support panel connected to the inner wall of the upper plate body, a support bottom plate connected to the top wall of the box beam, and a retractable support rod hinged between the support panel and the support bottom plate.

[0011] As another embodiment of the present invention, the support rod includes an upper support rod hinged to the inner side of the support panel, a lower support rod hinged above the support base plate, and an outer sleeve threadedly sleeved on the outer periphery of the upper and lower support rods.

[0012] As another embodiment of the present invention, a sound insulation board is connected to the upper portion of the shielding board body, and the inner side wall of the sound insulation board is coated with sound insulation paint.

[0013] As another embodiment of the present invention, the upper portion of the sound insulation board is bent inward, and the bending angle is ≤45°.

[0014] As another embodiment of the present invention, the upper part of the shielding plate body is also connected to a support plate located outside the sound insulation board. The support plate and the sound insulation board are connected by a number of spaced-apart connecting short columns, and the main axis of the connecting short columns is arranged perpendicular to the board surface of the support plate.

[0015] The beneficial effect of the shield device for railway box girders provided by the utility model is that: compared with the existing technology, the shield device for railway box girders provided by the utility model can guide the airflow to flow horizontally along the guide groove by arranging a guide plate with a guide groove on the outer side wall of the shielding plate body, which helps to reduce the formation of turbulence and eddy currents. When the guide plate is impacted by the airflow and swings horizontally, the elastic part on the inner side of the guide plate is elastically pushed against the outer side wall of the shielding plate body, thereby buffering the impact of the vortex airflow on the shielding plate body. At the same time, combined with the support component on the inner side of the shielding plate body, it effectively supports the shielding plate body, improves the stability of the shielding plate body, and thus ensures the stability of the railway box girder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of the installation state of a shield device for a railway box girder provided in an embodiment of the present utility model;

[0018] Figure 2 A schematic structural diagram of another angle of the installation state of the shield device for railway box beams provided by an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a partial cross-sectional structure of a shield device for a railway box girder provided in an embodiment of the utility model.

[0020] Among them, the reference numerals in the figures are:

[0021] 1. Shielding plate body; 11. Upper plate body; 12. Lower plate body; 121. Mounting block; 13. Positioning column; 2. Buffer assembly; 21. Guide plate; 22. Elastic member; 221. Inner support rod; 222. Outer sleeve; 223. Second spring; 23. Guide rod; 24. Swing arm; 25. First spring; 3. Support assembly; 31. Support panel; 32. Support base plate; 33. Support rod; 331. Upper support rod; 332. Lower support rod; 333. Outer sleeve; 4. Sound insulation board; 5. Support plate; 6. Connecting short column; 10. Box beam. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0024] Please also refer to Figures 1 to 3 The present invention now provides a shielding device for a railway box girder. The shielding device for a railway box girder is used to connect to the outer edge of the box girder 10 and includes a shielding plate body 1, a buffer assembly 2, and a support assembly 3. The buffer assembly 2 includes a guide plate 21 and an elastic member 22. The guide plate 21 is rotatably connected to the outer side of the shielding plate body 1. The elastic member 22 is connected to the inner side wall of the guide plate 21. The outer side wall of the guide plate 21 is provided with an arc-shaped, concave, and horizontally extending guide groove for guiding airflow to flow horizontally. The elastic member 22 is used to elastically push against the shielding plate body 1 to buffer the impact of airflow. The support assembly 3 is used to support between the shielding plate body 1 and the box girder 10.

[0025] The present embodiment provides a shield device for a railway box girder. Compared with the prior art, a guide plate 21 with a guide groove is provided on the outer wall of the shield plate body 1, which can guide the airflow to flow horizontally along the guide groove, thereby helping to reduce the formation of turbulence and eddies. When the guide plate 21 is impacted by the airflow and swings horizontally, the elastic member 22 on the inner side of the guide plate 21 is elastically pushed against the outer wall of the shield plate body 1, thereby buffering the impact of the vortex airflow on the shield plate body 1. At the same time, the support assembly 3 on the inner side of the shield plate body 1 effectively supports the shield plate body 1, thereby improving the stability of the shield plate body 1 and ensuring the stability of the railway box girder 10.

[0026] As a specific embodiment of the shield device for railway box beam provided by the utility model, see Figure 1The shielding plate body 1 includes a lower plate body 12 connected to the outside of the box beam 10 and an upper plate body 11 connected above the lower plate body 12. The upper plate body 11 is protruding from the lower plate body 12 on the side close to the box beam 10. The bottom of the upper plate body 11 is connected to a positioning column 13 extending downward and plugging with the box beam 10. The buffer assembly 2 is connected to the outside of the lower plate body 12, and the support assembly 3 is connected between the inner wall of the upper plate body 11 and the top wall of the box beam 10.

[0027] In this embodiment, the upper plate 11, lower plate 12, and positioning posts 13 are integrally cast concrete components. Multiple positioning posts 13 are provided along the upper plate 11. When installing the shielding panel 1, the positioning posts 13 are inserted into corresponding mounting holes on the box girder 10 to provide positioning. After installation, the shielding panel 1 has the upper plate 11 positioned above the outer edge of the box girder 10, while the lower plate 12 is positioned outside the outer edge of the box girder 10, enhancing the overall aesthetics of the box girder 10.

[0028] It's important to note that there's a certain gap between the lower plate 12 and the outer edge of the box girder 10. The vortex airflow impacting the lower plate 12 could easily cause it to wobble and collide with the box girder 10. Therefore, the buffer assembly 2 is positioned outside the lower plate 12 to mitigate the impact of the airflow. Simultaneously, the support assembly 3 is supported between the upper plate 11 and the box girder 10, forming a stable triangular support structure. The combination of the buffer assembly 2 and support assembly 3 effectively improves the stability of the shielding panel 1.

[0029] As a specific embodiment of the shield device for railway box beam provided by the utility model, see Figure 1 The buffer assembly 2 includes two guide rods 23 respectively connected to the outer wall of the lower plate body 12 and two groups of swing arms 24 rotatably connected to the outer periphery of the guide rods 23. The guide rods 23 extend in the up and down directions. Each group of swing arms 24 includes two swing arms 24 respectively arranged near the two ends of the guide rods 23. The outer ends of the swing arms 24 are hinged to the inner wall of the guide plate 21.

[0030] In this embodiment, the two sets of swing arms 24 rotate around their corresponding guide rods 23, enabling translational swinging of the deflector 21. Specifically, the two guide rods 23 and the two sets of swing arms 24 form a parallelogram-like structure with the lower plate 12 and the deflector 21. This allows the deflector 21 to move closer to the lower plate 12 while maintaining a parallel relationship with the sidewalls of the lower plate 12 when impacted by airflow. Simultaneously, the elastic member 22 moves synchronously with the deflector 21 until it abuts the lower plate 12, generating elastic deformation to push the deflector 21 back, thereby buffering the impact of the airflow.

[0031] Furthermore, a bidirectional torsion spring may be provided at the position where the guide rod 23 and the swing arm 24 are rotatably connected, so that the deflector 21 can be buffered when it swings left and right, thereby increasing the buffering effect of the buffer assembly 2 .

[0032] As a specific embodiment of the shield device for railway box beam provided by the utility model, see Figure 1 The two ends of the guide rod 23 are respectively connected to the outer wall of the lower plate body 12 through the mounting block 121. The outer periphery of the guide rod 23 is provided with a first spring 25 located between the swing arm 24 and the mounting block 121. The first spring 25 is used to elastically push the swing arm 24 to buffer the impact of the airflow on the guide plate 21 in the up and down directions.

[0033] In this embodiment, when the guide plate 21 is impacted by the vortex airflow and moves closer to the lower plate body 12, a certain offset will be formed in the vertical direction. The setting of the first spring 25 can buffer the above-mentioned offset, avoid the swing arm 24 from causing a hard collision with the mounting block 121, and improve the overall buffering effect of the buffer assembly 2.

[0034] Specifically, each guide rod 23 is correspondingly provided with two first springs 25, that is, a first spring 25 is provided between the upper swing arm 24 and the upper mounting block 121 and between the lower swing arm 24 and the lower mounting block 121 to provide a buffering effect on the guide plate 21 from the upper and lower directions.

[0035] As a specific embodiment of the shield device for railway box beam provided by the utility model, see Figure 3 The elastic member 22 includes an inner support rod 221 connected to the guide plate 21, an outer sleeve 222 slidably connected to the outer periphery of the inner support rod 221, and a second spring 223 sleeved on the outer periphery of the inner support rod 221 and the outer sleeve 222. The outer end of the second spring 223 is connected to the guide plate 21, and the inner end of the second spring 223 is connected to the outer sleeve 222. The outer sleeve 222 can swing horizontally with the guide plate 21 and press against the baffle body 1. The second spring 223 is used to elastically push the outer sleeve 222 to keep the outer sleeve 222 away from the guide plate 21.

[0036] In this embodiment, at least two sets of elastic members 22 are provided. These members 22 utilize a structure combining a second spring 223 with an inner support rod 221 and an outer sleeve 222, ensuring stable compression of the second spring 223. Specifically, a radially raised pressure plate is provided at the inner end of the outer sleeve 222, to which the inner end of the second spring 223 is fixedly connected. This plate increases the pushing area between the elastic member 22 and the shielding plate 1, contributing to a more stable cushioning process. Furthermore, the sliding connection between the inner support rod 221 and the outer sleeve 222 can be implemented as a gas spring, further enhancing the cushioning effect.

[0037] It should be noted that in the natural reset state (i.e., the guide plate 21 is in a stationary state), a certain distance or gap is maintained between the inner end of the elastic member 22 and the lower plate body 12, so that the elastic member 22 can be smoothly driven to move when the guide plate 21 is impacted and moves horizontally.

[0038] As a specific embodiment of the shield device for railway box beam provided by the utility model, see Figure 2 The support assembly 3 includes a support panel 31 connected to the inner wall of the upper plate body 11, a support base plate 32 connected to the top wall of the box beam 10, and a retractable support rod 33 hinged between the support panel 31 and the support base plate 32.

[0039] In this embodiment, the support panel 31 is mounted against the inner wall of the upper plate 11, and the support base 32 is mounted against the top wall of the box girder 10. Support rods 33 are hingedly positioned between the support panel 31 and the support base 32, forming a triangular support structure. Three support rods 33 are arranged side by side along the length of the shielding panel 1 to ensure effective support for the shielding panel 1. The hinged design of the support rods 33 allows them to be folded for easy transportation and installation.

[0040] When installing the support assembly 3, first connect the support panel 31 to the upper plate body 11, then adjust the length of the support rod 33 according to the actual support height, and then push the support base plate 32 toward the side of the upper plate body 11 until the support rod 33 presses the support panel 31 tightly, and then fix the support base plate 32 on the box beam 10 with bolts and other fasteners.

[0041] As a specific embodiment of the shield device for railway box beam provided by the utility model, see Figure 2 The support rod 33 includes an upper support rod 331 hinged to the inner side of the support panel 31, a lower support rod 332 hinged above the support base 32, and an outer sleeve 333 threadedly sleeved on the outer periphery of the upper support rod 331 and the lower support rod 332.

[0042] In this embodiment, the relative position between the upper support rod 331 and the lower support rod 332 can be adjusted by rotating the outer sleeve 333, thereby adjusting the height of the support rod 33, allowing the support assembly 3 to adapt to different usage environments and requirements. The threaded connection design of the outer sleeve 333 ensures the stability of the support rod 33 during the height adjustment process. At the same time, the self-locking nature of the thread ensures that the position of the upper support rod 331 and the lower support rod 332 remains unchanged during use, thereby ensuring the reliability of the support assembly 3.

[0043] As a specific embodiment of the shield device for railway box beam provided by the utility model, see Figure 1 or Figure 2The upper part of the shielding plate body 1 is connected with a sound insulation board 4, and the inner wall of the sound insulation board 4 is coated with sound insulation paint.

[0044] In this embodiment, the sound barrier 4 is typically composed of multiple layers of composite material, capable of blocking the propagation of sound through the air. By placing the sound barrier 4 atop the shielding body 1 and ensuring that its length matches that of the shielding body 1, the shielding body 1 not only provides protection but also provides sound insulation and noise reduction. Applying a sound-insulating coating to the inner sidewalls of the sound barrier 4 further reduces the amount of transmitted sound wave energy, enhancing the sound insulation effect and minimizing the impact on the surrounding environment.

[0045] As a specific embodiment of the shield device for railway box beam provided by the utility model, see Figure 1 or Figure 2 The upper part of the sound insulation board 4 is bent inward, and the bending angle is ≤45°.

[0046] In this embodiment, a bent portion with an angle of less than or equal to 45° is provided on the upper portion of the sound insulation board 4, which can reflect and refract the sound waves. The reflection will cause part of the sound waves to be bounced back, and the refraction will cause part of the sound waves to change the propagation direction, thereby reducing the propagation distance of the sound waves in the direction away from the noise source and further improving the sound insulation effect.

[0047] As a specific embodiment of the shield device for railway box beam provided by the utility model, see Figure 1 or Figure 2 The upper part of the shielding plate body 1 is also connected to a support plate 5 located on the outside of the sound insulation board 4. The support plate 5 and the sound insulation board 4 are connected by a number of spaced connecting short columns 6. The main axis of the connecting short column 6 is set perpendicular to the board surface of the support plate 5.

[0048] In this embodiment, the support plate 5 has the same orientation and bend angle as the sound insulation board 4, providing a mounting support for the sound insulation board 4 and ensuring its secure installation. The connecting studs 6 not only secure the sound insulation board 4 to the support plate 5 but also create a cavity between the sound insulation board 4 and the support plate 5. This cavity effectively absorbs sound wave energy and reduces sound propagation. Furthermore, the cavity can be filled with sound-absorbing material to further enhance the sound insulation effect. Furthermore, the connecting studs 6 reduce direct contact between the sound insulation board 4 and the support plate 5, thereby reducing the occurrence of resonance. Since resonance can reduce sound insulation effectiveness, the connecting studs 6 effectively prevent this.

[0049] The supporting plate 5, the sound insulation board 4 and the sound insulation coating together constitute a multi-layered sound insulation structure, each layer of which can absorb and block part of the noise, thereby achieving a better sound insulation effect.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shield device for railway box beam, used to be connected to the outer edge of the box beam, characterized in that: It includes a baffle body, a buffer assembly and a support assembly. The buffer assembly includes a guide plate and an elastic member. The guide plate is rotatably connected to the outer side of the baffle body. The elastic member is connected to the inner wall of the guide plate. The outer wall of the guide plate is provided with an arc-shaped concave and horizontally extending guide groove. The guide groove is used to guide the airflow to flow horizontally. The elastic member is used to elastically push on the baffle body to buffer the impact of the airflow. The support assembly is used to support between the baffle body and the box beam.

2. A shielding device for railway box beams according to claim 1, characterized in that: The shielding plate body includes a lower plate body connected to the outer side of the box beam and an upper plate body connected above the lower plate body. The upper plate body is arranged to protrude from the lower plate body toward the side close to the box beam. The bottom of the upper plate body is connected to a positioning column extending downward and plugged into the box beam. The buffer assembly is connected to the outer side of the lower plate body, and the support assembly is connected between the inner side wall of the upper plate body and the top wall of the box beam.

3. A shielding device for railway box beams according to claim 2, characterized in that: The buffer assembly includes two guide rods respectively connected to the outer side walls of the lower plate body and two groups of swing arms rotatably connected to the outer periphery of the guide rods. The guide rods extend in the up and down directions. Each group of the swing arms includes two swing arms respectively arranged near the two ends of the guide rods. The outer ends of the swing arms are hinged to the inner side walls of the guide plate.

4. A shielding device for railway box beams according to claim 3, characterized in that: The two ends of the guide rod are respectively connected to the outer wall of the lower plate body through mounting blocks. The outer periphery of the guide rod is provided with a first spring located between the swing arm and the mounting block. The first spring is used to elastically push the swing arm to buffer the impact of the airflow on the guide plate in the up and down directions.

5. The shield device for railway box beam according to claim 1, characterized in that: The elastic member includes an inner support rod connected to the guide plate, an outer sleeve slidably connected to the outer periphery of the inner support rod, and a second spring sleeved on the outer periphery of the inner support rod and the outer periphery of the outer sleeve. The outer end of the second spring is connected to the guide plate, and the inner end of the second spring is connected to the outer sleeve. The outer sleeve can swing horizontally with the guide plate and press against the baffle body. The second spring is used to elastically push the outer sleeve to keep the outer sleeve away from the guide plate.

6. The shield device for railway box beam according to claim 2, characterized in that: The support assembly includes a support panel connected to the inner side wall of the upper plate body, a support bottom plate connected to the top wall of the box beam, and a retractable support rod hinged between the support panel and the support bottom plate.

7. A shielding device for railway box beams according to claim 6, characterized in that: The support rod comprises an upper support rod hinged to the inner side of the support panel, a lower support rod hinged above the support base plate, and an outer sleeve threadedly sleeved on the outer periphery of the upper support rod and the lower support rod.

8. The shield device for railway box beam according to claim 1, characterized in that: The upper part of the shielding plate body is connected with a sound insulation board, and the inner side wall of the sound insulation board is coated with sound insulation paint.

9. The shield device for railway box beam according to claim 8, characterized in that: The upper portion of the sound insulation board is bent inwardly, and the bending angle is ≤45°.

10. The shield device for railway box beam according to claim 9, characterized in that: The upper part of the shielding plate body is also connected to a support plate located outside the sound insulation board. The support plate and the sound insulation board are connected through a number of spaced-apart connecting short columns, and the main axis of the connecting short column is arranged perpendicular to the board surface of the support plate.

Images