Millimeter wave radar protective shell structure for bridge deformation monitoring

Abstract

The utility model provides a millimeter wave radar protective shell structure for bridge deformation monitoring, which relates to the technical field of bridge radar protection and comprises protective plates, the protective plates are PC plates, are arranged right in front of a radar body at intervals, are wavy in the transverse direction and comprise arch-shaped parts and upwarp parts in the longitudinal direction, and the upwarp parts are arranged in the front of the radar body at intervals. The arch-shaped part is arranged in front of the radar body and located at the oblique upper position of the radar body, the top of the arch-shaped part extends to the position over the radar body, the tilting part and the arch-shaped part are arranged in a smooth connection mode, and the tilting part is located at the oblique lower position of the radar body; the energy absorption connecting frame is arranged between the protection plate and the radar body and comprises a plurality of connecting plates, one ends of the connecting plates are obliquely supported to the protection plate, and the other ends of the connecting plates are fixedly installed on the radar body. On the premise that radar signal transmitting and receiving performance is not affected, external flying stone impact can be effectively resisted, the viability of equipment under the complex terrain condition is improved, and the service life of the equipment under the complex terrain condition is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge radar protection, and more specifically, to a millimeter-wave radar protection shell structure for bridge deformation monitoring. Background Art

[0002] In the construction of mountain highway or railway bridges, bridges are often built along mountains due to rough terrain and winding lines. Since the bridge structure is often near the mountain slope, it is extremely vulnerable to deformation under the long-term influence of factors such as geological activities, slope settlement, and foundation deformation, threatening the safety of the bridge structure. Therefore, monitoring devices such as millimeter-wave radars are usually installed at key parts of the bridge structure in engineering to achieve long-term dynamic monitoring of bridge deformation. Millimeter-wave radars have the advantages of high detection accuracy, strong penetration, and good environmental adaptability, and are widely used in bridge health monitoring.

[0003] However, in mountainous environments, geological disasters such as frequent falling rocks and flying stones are extremely likely to damage or destroy the exposed millimeter-wave radar equipment, resulting in monitoring interruption and equipment damage, which not only affects the safe operation of the bridge, but also causes significant economic losses due to the high cost of radar equipment and the inconvenience of maintenance and replacement. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a millimeter-wave radar protection shell structure for bridge deformation monitoring, which can effectively resist the impact of external flying stones without affecting the radar signal transmission and reception performance, and improve the survival ability and service life of the equipment under complex terrain conditions.

[0005] The utility model is realized through the following technical solutions:

[0006] A millimeter-wave radar protection shell structure for bridge deformation monitoring includes:

[0007] A protection plate, which is a PC board. The protection plate is spaced in front of the radar body, and the protection plate is arranged in a wavy shape in the transverse direction. The protection plate includes an arched part and a tilted-up part in the longitudinal direction. The arched part is arranged in front of the radar body and is located obliquely above it. The top of the arched part extends directly above the radar body. The tilted-up part is smoothly connected to the arched part and is located obliquely below the radar body.

[0008] An energy-absorbing connecting frame is arranged between the protection plate and the radar body. The energy-absorbing connecting frame includes multiple connecting plates. One end of the connecting plate is braced obliquely against the protection plate, and the other end is fixedly installed on the radar body.

[0009] Further, the width of the protection plate in the transverse direction gradually narrows downward in the longitudinal direction.

[0010] Further, the wave crests in the wavy middle region of the protection plate in the lateral direction are arranged towards the front of the radar body, and the height of the wave crests at this position is greater than that of the wave crests at other positions in the lateral direction.

[0011] Further, a flanging is provided at the top of the arched portion.

[0012] Further, an elastic plate is installed between the arched portion and the radar body. The elastic plate includes a pair of support portions and a connecting portion. The pair of support portions are spaced apart and connected to the radar body, and the connecting portion is in fitting connection with the arched portion.

[0013] Further, plug-in portions are provided at one ends of the pair of support portions close to the radar body. A clamping plate is provided on the radar body, and a plug-in groove is formed in the clamping plate. The plug-in portions are used for plugging into the plug-in grooves.

[0014] Further, an arched energy absorption portion is provided on the connecting plate.

[0015] Further, the connecting plate is fixedly installed on the side wall of the radar body by bolts.

[0016] Further, a reflective layer for reflecting radar waves is coated on the inner surface of the upturned portion.

[0017] The technical solution of the present utility model has at least the following advantages and beneficial effects:

[0018] 1. By arranging a wavy protection plate made of PC material in front of the radar body and combining the arched portion and the upturned portion in the longitudinal direction, the present utility model can effectively resist the impact of falling stones and flying stones from the obliquely upper or obliquely lower directions without blocking or interfering with the normal transmission and reception of radar waves. The wavy structure of the protection plate not only improves the overall strength and impact resistance in the physical structure, but also the arc surfaces formed between the undulating wave crests have good radar wave permeability and impact guiding functions, which is beneficial to dispersing or deflecting the impact force and reducing the direct action of the frontal impact force on the radar body.

[0019] Among them, the arched portion is located obliquely above the radar body, and its top extends to directly above, which can effectively protect against objects rolling from a high place or the top of a slope. The upturned portion extends obliquely below the radar body, which can block the invasion of splashes or rebounding objects on the lower inclined plane. The smooth transition design between the arched portion and the upturned portion further reduces the impact concentration, is conducive to the diffusion and rebound of the impact force, and at the same time maximally avoids the reflection and interference of radar waves, ensuring the stability and accuracy of the monitoring signal.

[0020] In addition, the protection board is connected to the radar body through an energy-absorbing connecting frame, which is composed of multiple diagonal bracing connecting plates. It can generate certain deformation to absorb energy when subjected to external force impact, further buffering the transmission of the impact force to the radar body and enhancing the survival ability and service life of the radar equipment in the complex mountainous bridge environment. The overall structure combines the functions of protection, wave penetration, and energy absorption, providing a reliable and economical physical protection means for the high-cost millimeter-wave radar. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of a millimeter-wave radar protection shell structure for bridge deformation monitoring provided by the present utility model;

[0022] Figure 2 It is a schematic diagram showing the structure of the energy-absorbing connecting frame and the protection board of the present utility model;

[0023] Figure 3 It is a schematic diagram showing the installation structure of the elastic plate of the present utility model;

[0024] Figure 4 It is a schematic diagram showing the structure of the radar body and the protection board installed on the bridge of the present utility model;

[0025] Reference numerals: 1 - protection board, 10 - wave crest, 11 - arched part, 111 - flanging, 12 - upturned part, 121 - reflective layer, 2 - energy-absorbing connecting frame, 21 - connecting plate, 211 - arched energy-absorbing part, 3 - elastic plate, 31 - supporting part, 311 - inserting part, 32 - connecting part, 4 - bolt, 5 - radar body, 51 - clamping plate, 511 - inserting groove, 6 - bridge, 7 - mountain body. Detailed Description of the Embodiment

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0028] Embodiment

[0029] The following refers toFigures 1-4 As shown in the figure, and further explained in conjunction with a specific embodiment, this embodiment provides a millimeter-wave radar protective shell structure for bridge deformation monitoring. The structure primarily comprises a protective plate 1, which is a PC board. Specifically, the PC board is made of polycarbonate, which offers excellent wave transparency, impact resistance, and weather resistance. It can maintain long-term stability in complex mountainous environments, such as high and low temperatures and humidity, and is not susceptible to aging or cracking. This material also possesses strong plasticity, making it easy to process and shape into specific protective profiles based on actual protection requirements.

[0030] Protective panels 1 are installed at intervals directly in front of the radar body 5, forming a frontal protective barrier independent of the radar's main structure. The radar body 5 is typically mounted on the side of a bridge 6 using expansion bolts, generally facing the mountain 7. The protective panels 1 are arranged in a wavy pattern along the transverse direction, forming a structure with alternating peaks 10 and troughs. This structure not only enhances the rigidity of the panel, but also effectively disperses the impact force in multiple directions, reducing localized stress concentration. The gaps between the peaks 10 also facilitate the penetration and propagation of radar waves, without affecting signal detection performance.

[0031] The protective plate 1 comprises two longitudinal sections: an arched portion 11 and a raised portion 12. The arched portion 11 is positioned in front of and diagonally above the radar body 5. The top of the arched portion 11 extends directly above the radar body 5, effectively preventing rocks, gravel, and other debris from falling from above from striking the radar body 5. The raised portion 12 seamlessly transitions with the arched portion 11, creating a natural structural transition and avoiding stress concentration caused by sudden changes. The raised portion 12, located diagonally below the radar body 5, blocks objects that splash or rebound from downhill, while also providing a certain degree of rebound deflection, reducing the risk of impact to the protective plate 1 as a whole.

[0032] Reference Figure 1 and Figure 2 As shown, the energy-absorbing connecting frame 2 is installed between the protective plate 1 and the radar body 5, connecting and supporting them. The energy-absorbing connecting frame 2 comprises multiple connecting plates 21, one end of which is braced diagonally to the protective plate 1 and the other end is fixedly mounted to the radar body 5, forming a stable connecting support structure. To ensure a high-strength connection, impact resistance, and no interference with radar wave propagation, the connecting plates 21 are preferably made of high-strength non-metallic composite materials, such as glass fiber reinforced nylon (PA+GF) or carbon fiber reinforced polymer. These materials have excellent mechanical properties, including high tensile strength and good fatigue resistance, while lacking the high reflectivity of metal, effectively preventing interference with millimeter-wave radar signals. Furthermore, this material is easy to process and form, facilitating mechanical connection or bonding with the protective plate 1 (PC board), and exhibits good compatibility.

[0033] In this embodiment, the energy-absorbing connecting frame 2 preferably adopts four connecting plates 21, which are distributed outwardly and divergently on the back of the protection plate 1, and the overall structure forms an umbrella-frame-like support structure. This multi-point extended layout helps to evenly share the external impact load borne by the protection plate 1, avoid structural deformation or failure caused by concentrated stress, and achieve more efficient impact mitigation and energy absorption capabilities through a dispersed support path, further ensuring the working stability and physical safety of the millimeter-wave radar.

[0034] As an alternative embodiment, the width of the protection plate 1 in the transverse direction gradually narrows downward longitudinally. This structural design not only reduces the material consumption and weight of the overall structure, saves costs, but also reduces the occlusion of the radar wave propagation path, which helps the beam to radiate freely in the front area. At the same time, the overall contour of the protection plate 1 is in an irregular curved surface shape, which is conducive to the bouncing and deflection of impact objects such as falling stones, reduces the frontal impact force, and effectively avoids structural failure caused by the concentration of impact points.

[0035] As another alternative embodiment, the protection plate 1 is provided with a wave crest 10 facing the front of the radar body 5 in the wavy middle area in the transverse direction, and the height of this wave crest 10 is higher than that of the wave crests 10 in other positions in the transverse direction. The setting of this structure enables the area directly in front of the radar to have stronger local impact resistance, and at the same time forms an obvious wave trough gap area, which is more conducive to the directional penetration and propagation of radar waves, improving the wave transparency of the overall structure and the clarity of radar imaging.

[0036] Among them, the top of the arched part 11 is provided with a flanging 111 structure that turns outwards. The flanging 111 extends along the outside of the outer edge of the protection plate 1, which can play a certain role in blocking and guiding water flow in rainy, snowy or muddy weather. At the same time, it also has secondary buffering and structural anti-tearing capabilities during the impact of flying stones, enhancing the overall strength and durability of the arched part 11.

[0037] Refer to Figure 2 and Figure 3 As shown, a pair of elastic plates 3 are symmetrically installed between the arched part 11 and the radar body 5 for further buffering connection stress and enhancing protection flexibility. The elastic plate 3 includes a pair of support parts 31 and a connecting part 32. The pair of support parts 31 and the connecting part 32 form an "n"-shaped structure as a whole. Among them, the two support parts 31 are arranged at intervals and fixedly connected to both sides of the radar body 5, and the connecting part 32 is fixedly connected to the inner side of the arched part 11 in a fitting manner, increasing the connection contact surface. In order to simplify the installation process, a plug-in part 311 is provided at one end of each of the pair of support parts 31 close to the radar body 5. The radar body 5 is correspondingly provided with a clamping plate 51, and a plug-in slot 511 is opened on the clamping plate 51. The plug-in part 311 is quickly positioned and installed by inserting into the plug-in slot 511, improving the overall assembly efficiency and disassembly convenience.

[0038] In order to further enhance the energy-absorbing connection performance, an arched energy-absorbing portion 211 is integrally provided on the connecting plate 21. The energy-absorbing portion has an arc-shaped arch structure. When an external impact acts on the protective plate 1, the energy-absorbing portion absorbs part of the energy through deformation, thereby reducing the stress peak transmitted to the radar body 5 and improving the radar's anti-damage ability in harsh environments.

[0039] The connecting plate 21 is fixed to the side wall of the radar body 5 by bolts 4. This installation method ensures structural stability and does not block or interfere with the transmission of radar wave signals. The installation location avoids the radar antenna area to avoid structural shielding. Of course, in actual application, the bolts 4 can also be replaced with rivets, quick-lock structures, or other mechanical fasteners as needed to meet the requirements of assembly and disassembly and security in different scenarios.

[0040] As another optional embodiment, the inner surface of the raised portion 12 is coated with a reflective layer 121 for reflecting radar waves. The reflective layer 121 can be composed of a metal coating or a microstructured reflective material, and has good directional reflection capability. It can reflect radar waves in a directionally directed manner to the target piers, supports or other monitoring locations, thereby improving the utilization rate of radar waves and the signal echo intensity, thereby improving the accuracy and stability of the overall bridge 6 deformation monitoring system.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A millimeter-wave radar protective shell structure for bridge deformation monitoring, characterized in that, include: A protective plate (1), wherein the protective plate (1) is a PC plate, and the protective plate (1) is arranged at intervals in front of the radar body (5), and the protective plate (1) is arranged in a wavy shape in the transverse direction. The protective plate (1) includes an arched portion (11) and a raised portion (12) in the longitudinal direction, and the arched portion (11) is arranged in front of the radar body (5) and is located obliquely above the radar body (5). The top of the arched portion (11) extends to the top of the radar body (5), and the raised portion (12) is smoothly connected with the arched portion (11). The raised portion (12) is located obliquely below the radar body (5); An energy absorbing connecting frame (2) is arranged between the protection plate (1) and the radar body (5), and the energy absorbing connecting frame (2) includes a plurality of connecting plates (21), one end of the connecting plate (21) is obliquely supported on the protection plate (1), and the other end is fixedly mounted on the radar body (5).

2. The millimeter-wave radar protective housing structure for bridge deformation monitoring according to claim 1, characterized in that The width of the protection plate (1) in the transverse direction gradually narrows downward in the longitudinal direction.

3. The millimeter-wave radar protective shell structure for bridge deformation monitoring according to claim 2, characterized in that, The crest (10) of the wavy middle region of the protection plate (1) in the transverse direction is arranged toward the front of the radar body (5), and the height of the crest (10) at this position is greater than the height of the crest (10) at other positions in the transverse direction.

4. The millimeter-wave radar protective housing structure for bridge deformation monitoring according to claim 1, characterized in that, The top of the arched portion (11) is provided with a flange (111).

5. The millimeter-wave radar protective shell structure for bridge deformation monitoring according to claim 1, characterized in that, An elastic plate (3) is installed between the arch portion (11) and the radar body (5), and the elastic plate (3) includes a pair of supporting portions (31) and a connecting portion (32). The pair of supporting portions (31) are spaced apart and connected to the radar body (5), and the connecting portion (32) is closely connected to the arch portion (11).

6. The millimeter-wave radar protective housing structure for bridge deformation monitoring according to claim 5, characterized in that, A pair of the support portions (31) are each provided with a plug-in portion (311) at one end close to the radar body (5); a clamping plate (51) is provided on the radar body (5); a plug-in slot (511) is provided on the clamping plate (51); and the plug-in portion (311) is used for plugging into the plug-in slot (511).

7. The millimeter-wave radar protective housing structure for bridge deformation monitoring according to claim 1, characterized in that, An arched energy absorbing portion (211) is provided on the connecting plate (21).

8. The millimeter-wave radar protective shell structure for bridge deformation monitoring according to claim 1, characterized in that, The connecting plate (21) is fixedly mounted on the side wall of the radar body (5) via bolts (4).

9. The millimeter-wave radar protective shell structure for bridge deformation monitoring according to claim 1, characterized in that, The inner surface of the raised portion (12) is coated with a reflection layer (121) for reflecting radar waves.

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