Radar for bridge monitoring

By designing a sliding plate, chute, and motor drive mechanism with a support frame, the problem of complex installation and time-consuming disassembly of traditional bridge monitoring radars is solved. This enables flexible adjustment and convenient storage of the radar body, improving operational efficiency and equipment protection.

CN224066987UActive Publication Date: 2026-03-31ZHEJIANG ZHONGGONG ZHILIAN ELECTRONIC TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Traditional bridge monitoring radar is complex, time-consuming, and easily damaged during installation, dismantling, and storage, and requires a complex support system for support and fixation.

Method used

The system uses a combination of a sliding plate, a sliding track, and a drive mechanism to automatically adjust the radar body's steering, vertical lifting, and overall height via a motor drive. Combined with a support frame and ball bearing structure, it simplifies the installation and storage process, while the outer casing provides protection.

Benefits of technology

It enables flexible installation and quick storage of the radar body, improves operational efficiency and user experience, reduces frictional resistance, and protects the equipment from dust and moisture.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model is suitable for the technical field of engineering radars, and provides a radar for bridge monitoring, which comprises a radar main body for monitoring a bridge, and an outer box for storage is arranged outside the radar main body; the sliding grooves are symmetrically formed in the inner walls of the two sides of the outer box, and sliding plates capable of ascending and descending are arranged in the sliding grooves; the mounting frame is fixed on the sliding plate, a steering shaft is rotationally mounted on the mounting frame, and the bottom end of the steering shaft is fixedly connected with the radar main body and used for adjusting the steering direction of the radar main body; the first motor is arranged in the mounting frame, and an output shaft of the first motor is fixedly connected with the steering shaft through a coupler; and the driving mechanism is used for driving the sliding plate to lift and is arranged in the outer box. According to the bridge monitoring radar provided by the scheme, the problem that an existing bridge monitoring radar is troublesome and time-consuming to assemble, disassemble and store during use is solved.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to engineering radar technical field especially relates to a radar for bridge monitoring. BACKGROUND

[0002] In the current bridge monitoring field, radar technology has become an important tool for bridge structure health monitoring and traffic event detection with its high precision, long-range sensing and all-weather working characteristics. The radar for bridge monitoring adopts advanced radar sensing technology, combines intelligent algorithm and data processing technology, and can realize real-time monitoring of the health state of the bridge structure, quickly capture the slight deformation and vibration of the bridge and the dynamic changes of the surrounding environment, and provide timely and accurate monitoring data for bridge managers.

[0003] However, the traditional bridge monitoring radar often needs a complex support system for support and fixation to ensure that the radar can stably point to the target area for monitoring. This design not only increases the installation difficulty and cost, but also brings many inconveniences when disassembling and storing. The workers need to spend a lot of time and effort to complete the disassembly and storage, which not only prolongs the working period, but also may cause damage to the equipment due to improper operation. UTILITY MODEL CONTENTS

[0004] The utility model provides a radar for bridge monitoring, aims at solving the problem of current bridge monitoring radar assembly disassembly and storage.

[0005] The utility model is realized in this way, a radar for bridge monitoring, include: for monitoring bridge's radar main part, the outer box, the outer box is located in the radar main part outside, for the radar main part storage, the slide groove that symmetrical opens on the two side inner walls of the outer box, the slide groove is provided with the liftable sliding plate in, the mounting frame that is fixed on the sliding plate, the mounting frame is installed with the steering shaft that rotates on, the bottom end of steering shaft is fixed connection with the radar main part, for adjusting its steering, set up in the first motor in the mounting frame, the output shaft of first motor is fixed connection with the steering shaft through the shaft coupling, the drive mechanism that is used for driving the sliding plate lift, the drive mechanism sets up in the outer box, the adjusting mechanism that is used for adjusting the height of the outer box, the adjusting mechanism sets up on the outer box.

[0006] Preferably, the drive mechanism includes: the mounting block that is fixed on the inner wall of the outer box, the first screw rod that rotates and is installed on the mounting block, the first screw rod is screwed through the sliding plate, for adjusting its lift, the second motor that sets up in the outer box is the power source for driving the first screw rod to rotate, the bevel gear that is fixed on the output shaft of the second motor and the first screw rod respectively and meshes with each other, for transmission.

[0007] Preferably, the adjustment mechanism includes: a mounting shell symmetrically fixed to the outer wall of the outer casing, on which a second screw is rotatably mounted; a threaded cylinder disposed on the second screw, on which a connecting plate is fixedly mounted at the bottom end; a base plate fixed on the connecting plate for supporting the ground; and a third motor disposed within the mounting shell, the output shaft of which is fixedly connected to the second screw via a coupling.

[0008] Preferably, support frames are symmetrically fixedly installed on both sides of the mounting frame, and ball bearings are embedded at the top of the support frames, with the ball bearings contacting the bottom of the radar body.

[0009] Preferably, the top of the outer box is provided with a detachable box cover, the two sides of the box cover are fixed with hooks, and the two sides of the outer box are provided with buckles, the buckles engaging with the corresponding hooks.

[0010] Preferably, the top of the box cover is symmetrically provided with assembly blocks.

[0011] Preferably, the assembly block is hinged with a handle for gripping and lifting.

[0012] Preferably, the handle is provided with a rubber sleeve.

[0013] Preferably, the bottom of the outer box is provided with a storage groove, which is adapted to the base plate. Several positioning brackets are symmetrically fixedly installed on the bottom of the base plate. The bottom end of the positioning bracket is conical and used to break the soil.

[0014] Preferably, the outer casing is provided with an inspection port, the inspection port is provided with a removable baffle, the baffle is provided with a bolt, and the bolt is threadedly connected to the outer casing.

[0015] Compared with related technologies, the bridge monitoring radar provided by this utility model has the following advantages:

[0016] Through the cooperation of the sliding plate, slide rail, and drive mechanism, the installation position of the radar body can be flexibly adjusted vertically, facilitating quick and easy storage. The threaded engagement between the first screw and the sliding plate, along with the precise transmission of the second motor and bevel gears, ensures high-precision positioning during lifting, making adjustments more convenient and accurate. By controlling the operation of the first, second, and third motors, the radar body's steering adjustment, vertical lifting, and overall height adjustment are automated. This design avoids the tediousness and inconvenience of traditional manual adjustments, improving work efficiency and user experience. The support frame and its ball bearing structure provide stable support for the radar body and reduce frictional resistance during rotation, making the radar body's rotation smoother and more stable. The outer casing not only provides the necessary storage space for the radar body but also provides excellent protection through its robust structure. When the radar body is not in use, it can be easily stored inside the outer casing to prevent damage from dust, moisture, and other external factors. Attached Figure Description

[0017] Figure 1 A schematic diagram of the main view structure of a bridge monitoring radar provided by this utility model;

[0018] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0019] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0020] Figure 4 This is a schematic diagram of the structure of the base plate, connecting plate and threaded cylinder in this utility model.

[0021] Reference numerals in the attached drawings: 1. Radar body; 2. Outer casing; 3. Slide groove; 4. Slide plate; 5. Mounting frame; 6. Steering shaft; 7. First motor; 8. Mounting block; 9. First screw; 10. Second motor; 11. Bevel gear; 12. Mounting shell; 13. Second screw; 14. Threaded cylinder; 15. Connecting plate; 16. Base plate; 17. Third motor; 18. Support frame; 19. Box cover; 20. Hook; 21. Buckle; 22. Positioning bracket. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] This utility model embodiment provides a radar for bridge monitoring, such as... Figures 1-4 As shown, the bridge monitoring radar includes: a radar body 1 for monitoring bridges, with an outer casing 2 for storage; symmetrically arranged grooves 3 on the inner walls of both sides of the outer casing 2, with a liftable sliding plate 4 installed in the grooves 3; a mounting frame 5 fixed to the sliding plate 4, with a steering shaft 6 rotatably mounted on the mounting frame 5, the bottom end of the steering shaft 6 being fixedly connected to the radar body 1 for adjusting its direction; a first motor 7 installed in the mounting frame 5, the output shaft of the first motor 7 being fixedly connected to the steering shaft 6 via a coupling; a drive mechanism for driving the sliding plate 4 to rise and fall, the drive mechanism being installed in the outer casing 2; and an adjustment mechanism for adjusting the height of the outer casing 2, the adjustment mechanism being installed on the outer casing 2.

[0025] It should be noted that the reason why traditional bridge monitoring radar is complicated and time-consuming to install, dismantle and store is mainly because it uses a relatively bulky support system to ensure the stability and pointing accuracy of the radar. This design significantly increases the overall weight and volume of the equipment, making the transportation, installation and dismantling process complicated. In addition, the cumbersome assembly steps and high-precision installation requirements also place high demands on the skill level of the staff, further aggravating the problems of operation difficulty and time consumption.

[0026] In this embodiment, the bridge monitoring radar mainly consists of a radar body 1 and an outer casing 2. The radar body 1 is the core component of bridge monitoring (the bridge monitoring radar emits high-frequency electromagnetic waves to the bridge structure. When these electromagnetic waves encounter interfaces between different media (such as concrete and steel bars, voids, cracks, etc.), they are reflected. The reflected signals are received and analyzed by the radar system. By analyzing the propagation time, intensity, phase, and other information of the reflected waves, the condition of the bridge's internal structure can be inferred). The outer casing 2 is used to house and protect the radar body 1, while providing the necessary installation and adjustment structure. Slides 3 are symmetrically opened on the inner walls of both sides of the outer casing 2. Liftable sliding plates 4 are installed in these slides 3. The design of the sliding plates 4 allows the installation position of the radar body 1 to be flexibly adjusted in the vertical direction to adapt to monitoring needs at different heights and angles. The mounting frame 5 is fixed on the sliding plates 4, and a steering shaft 6 is rotatably mounted on it. The bottom end of the steering shaft 6 is fixedly connected to the radar body 1, so that when the steering shaft 6 rotates, the direction of the radar body 1 will change accordingly. The first motor 7 is installed inside the mounting frame 5, and its output shaft is fixedly connected to the steering shaft 6 via a coupling. Therefore, by controlling the operation of the first motor 7, the steering of the radar body 1 can be easily adjusted. In order to drive the slide plate 4 to rise and fall in the slide groove 3, a drive mechanism is set in the outer box 2, which can achieve precise positioning of the radar body 1 in the vertical direction and can adjust the radar body 1 outside the outer box 2 for use. The adjustment mechanism can easily adjust the overall height of the outer box 2, thereby adjusting the monitoring height of the radar body 1. By using the cooperation of the slide plate 4, the slide groove 3 and the drive mechanism, this design is more convenient to use than the traditional bulky bracket system, without complicated disassembly and assembly, and storage is also more labor-saving and convenient. The outer box 2 not only provides the necessary storage space for the radar body 1, but also plays a good protective role for it.

[0027] In a further preferred embodiment of this utility model, the driving mechanism includes: a mounting block 8 fixed on the inner wall of the outer casing 2, a first screw 9 rotatably mounted on the mounting block 8, the first screw 9 threaded through the slide plate 4 for adjusting its lifting and lowering; a second motor 10 disposed in the outer casing 2 as a power source for driving the first screw 9 to rotate; and bevel teeth 11 fixed to the output shaft of the second motor 10 and the first screw 9 respectively and meshing with each other for transmission.

[0028] In this embodiment, the mounting block 8 is firmly fixed to the inner wall of the outer casing 2, serving as a support and positioning base; the first screw 9 is rotatably mounted on the mounting block 8, and its threaded portion penetrates the slide plate 4. This design allows the slide plate 4 to move up and down along the thread direction when the first screw 9 rotates. Due to the stability and reliability of threaded transmission, this design ensures the smoothness and accuracy of the slide plate 4 during lifting and lowering; the second motor 10 serves as the power source for driving the rotation of the first screw 9, and is located inside the outer casing 2. By controlling the operation of the second motor 10, the rotation of the first screw 9 can be easily achieved, thereby driving the lifting and lowering of the slide plate 4. The selection and installation position of the second motor 10 have been carefully considered to ensure its efficient and stable operation; the bevel gear 11 is used in this embodiment to transmit the power of the second motor 10 to the first screw 9. Specifically, the bevel gear 11 is fixed to the output shaft of the second motor 10 and the first screw 9 respectively, and the two mesh with each other. This design allows the power of the second motor 10 to be transmitted to the first screw 9 through the meshing of the bevel gear 11, thereby driving its rotation. The bevel gear 11 transmission has advantages such as stable transmission ratio and compact structure, which can effectively improve transmission efficiency and accuracy. By adopting the threaded engagement design between the first screw 9 and the slide plate 4, and the precise transmission between the second motor 10 and the bevel gear 11, the drive mechanism can ensure high-precision positioning of the slide plate 4 during the lifting process. Compared with traditional manual adjustment, the automatic lifting and lowering of the slide plate 4 and the radar body can be achieved by controlling the operation of the second motor 10. This design makes the storage work more labor-saving and convenient.

[0029] In a further preferred embodiment of the present invention, the adjustment mechanism includes: a mounting shell 12 symmetrically fixed on the outer wall of the outer casing 2, a second screw 13 rotatably mounted on the mounting shell 12; a threaded cylinder 14 disposed on the second screw 13, a connecting plate 15 fixedly mounted on the bottom end of the threaded cylinder 14; a base plate 16 fixed on the connecting plate 15 for supporting the ground; and a third motor 17 disposed inside the mounting shell 12, the output shaft of the third motor 17 being fixedly connected to the second screw 13 via a coupling.

[0030] In this embodiment, the mounting shell 12 is symmetrically fixed to the outer wall of the outer casing 2, serving as a support and mounting base; the second screw 13 is rotatably mounted on the mounting shell 12, serving as the core transmission component of the adjustment mechanism. Its design considers transmission stability and accuracy to ensure smooth rotation during adjustment; the threaded cylinder 14 is mounted on the second screw 13 and forms a threaded engagement with it. When the second screw 13 rotates, the threaded cylinder 14 can move up and down along its axial direction, adjusting the height of the outer casing 2 according to monitoring requirements; the connecting plate 15 is fixed... The screw is fixed at the bottom of the threaded cylinder 14, serving as a bridge connecting the threaded cylinder 14 and the base plate 16. The base plate 16 is fixed on the connecting plate 15 to support the entire radar equipment on the ground, ensuring that the radar remains stable and does not shake during monitoring. The third motor 17 serves as the power source for driving the rotation of the second screw 13. The third motor 17 is installed inside the mounting housing 12. By controlling the operation of the third motor 17, the rotation of the second screw 13 can be easily achieved, thereby driving the threaded cylinder 14 and the base plate 16 to rise and fall. This design makes the adjustment process more automated and convenient.

[0031] In a further preferred embodiment of the present invention, support frames 18 are symmetrically fixedly installed on both sides of the mounting frame 5, and ball bearings are embedded at the top of the support frames 18, with the ball bearings contacting the bottom of the radar body 1.

[0032] In this embodiment, to further optimize the support and rotation effect of the radar body 1 on the mounting frame 5, a support frame 18 and its ball bearing structure are specially designed. The support frame 18 is symmetrically fixed on both sides of the mounting frame 5 as an auxiliary support structure for the radar body 1. Its design is robust and stable, capable of withstanding the torque and vibration generated during the rotation of the radar body 1, ensuring the stable operation of the radar body 1. Ball bearings are embedded at the top of the support frame 18. These ball bearings contact the bottom of the radar body 1, forming a rolling support surface. When the radar body 1 rotates via the steering shaft 6, the ball bearings reduce the frictional resistance between themselves and the bottom of the radar body 1, making the rotation smoother and more stable.

[0033] In a further preferred embodiment of the present invention, the top of the outer box 2 is provided with a detachable box cover 19, and hooks 20 are fixed on both sides of the box cover 19. Buckles 21 are provided on both sides of the outer box 2, and the buckles 21 are engaged with the corresponding hooks 20.

[0034] In this embodiment, to enhance the practicality and convenience of the outer casing 2, a detachable cover 19 and corresponding hooks 20 and buckles 21 are specially designed. The top of the outer casing 2 is provided with a detachable cover 19. This design allows users to easily close the cover 19 when the radar equipment is not in use, protecting the internal components of the outer casing 2 from external factors such as dust and moisture. Simultaneously, when the radar equipment needs to be used, the user can quickly remove the cover 19 for convenience. To ensure that the cover 19 is securely fixed to the outer casing 2 when closed, hooks 20 are fixed on both sides of the cover 19, while buckles 21 are correspondingly provided on both sides of the outer casing 2. The hooks 20 and buckles 21 are designed to interlock, preventing the cover 19 from shifting or falling off.

[0035] In a further preferred embodiment of the present invention, the top of the box cover 19 is symmetrically provided with assembly blocks, and the assembly blocks are hinged with handles for gripping and lifting, and the handles are provided with rubber sleeves.

[0036] In this embodiment, the top of the cover 19 is symmetrically provided with assembly blocks, and a handle for gripping and lifting is hinged on the assembly blocks, making it convenient for users to lift this bridge monitoring radar; the rubber sleeve has good elasticity and friction, which can effectively reduce friction and wear between the user's hand and the handle, while increasing the stability and safety when gripping.

[0037] In a further preferred embodiment of the present invention, the bottom of the outer box 2 is provided with a storage groove, which is adapted to the base plate 16. Several positioning brackets 22 are symmetrically fixedly installed on the bottom of the base plate 16. The bottom end of the positioning bracket 22 is conical and used to break the soil.

[0038] In this embodiment, to enhance the stability and adaptability of the outer casing 2 on the ground, especially its performance in complex outdoor terrain, several positioning brackets 22 are symmetrically fixedly installed on the bottom of the base plate 16, which serve as support and stability. The bottom end of the positioning brackets 22 is designed to be conical. This conical design makes it easier for the brackets to break through the soil when inserted into mud or soft ground, thereby increasing the stability and robustness of the device.

[0039] In a further preferred embodiment of the present invention, an inspection port is provided on the outer casing 1, a detachable baffle is provided inside the inspection port, and a bolt is provided on the baffle, the bolt being threadedly connected to the outer casing 1.

[0040] In this embodiment, an inspection port is directly opened on the outer casing 1, providing technicians with a convenient passage for daily inspection, maintenance, or troubleshooting of internal components. The design of the removable baffle ensures the sealing and safety of the equipment during normal operation, while also allowing for disassembly and exposure of the internal space for maintenance. The removability of the baffle greatly enhances the flexibility of maintenance operations. The baffle is connected to the outer casing 1 by bolts, which is both firm and reliable.

[0041] In summary, through the cooperation of the slide plate 4, the slide groove 3, and the drive mechanism, the installation position of the radar body 1 can be flexibly adjusted in the vertical direction, and it is also convenient for quick storage. The threaded engagement between the first screw 9 and the slide plate 4, as well as the precise transmission of the second motor 10 and the bevel gear 11, ensures high-precision positioning during the lifting process, making adjustment more convenient and accurate. By controlling the operation of the first motor 7, the second motor 10, and the third motor 17, the automatic adjustment of the radar body 1's steering, vertical lifting, and overall height is realized. This design avoids the cumbersome and inconvenient nature of traditional manual adjustment, improving work efficiency and user experience. The support frame 18 and its ball bearing structure provide stable support for the radar body 1 and reduce frictional resistance during rotation, making the rotation of the radar body 1 smoother and more stable. The outer casing 2 not only provides the necessary storage space for the radar body 1, but also provides good protection for the radar body through its sturdy structure. When the radar body 1 is not in use, it can be easily stored in the outer casing 2 to prevent damage from external factors such as dust and moisture.

[0042] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0043] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A radar for bridge monitoring, characterized by, The utility model provides a radar body (1) for monitoring bridge, the outer box (2) of radar body (1) is arranged outside, and radar body (1) is stored, the slide groove (3) of symmetry is opened on the inner wall of both sides of outer box (2), and the slide groove (3) is provided with the slide plate (4) of lifting inside, the mounting frame (5) is fixed on the slide plate (4), the steering shaft (6) is rotatably installed on the mounting frame (5), and the bottom end of steering shaft (6) is fixedly connected with radar body (1) for adjusting the steering, the first motor (7) is arranged in the mounting frame (5), and the output shaft of first motor (7) is fixedly connected with steering shaft (6) through the shaft coupling, the drive mechanism for driving the slide plate (4) lifting is arranged in the outer box (2), the adjusting mechanism for adjusting the height of outer box (2) is arranged on the outer box (2). The drive mechanism comprises: The mounting block (8) is fixed on the inner wall of the outer box (2), the first screw rod (9) is rotatably installed on the mounting block (8), the first screw rod (9) is threaded through the slide plate (4), and the first screw rod (9) is used for adjusting the lifting of the slide plate (4), the second motor (10) is arranged in the outer box (2), and the second motor (10) is the power source for driving the first screw rod (9) to rotate, the bevel gear (11) is fixed on the output shaft of the second motor (10) and the first screw rod (9) respectively and is engaged with each other, and the bevel gear (11) is used for transmission. The adjusting mechanism comprises: The mounting shell (12) is symmetrically fixed on the outer wall of the outer box (2), the second screw rod (13) is rotatably installed on the mounting shell (12), the threaded cylinder (14) is arranged on the second screw rod (13), the connecting plate (15) is fixedly installed on the bottom end of the threaded cylinder (14), the base plate (16) is fixed on the connecting plate (15) and is used for supporting on the ground, the third motor (17) is arranged in the mounting shell (12), and the output shaft of the third motor (17) is fixedly connected with the second screw rod (13) through the shaft coupling. The support frame (18) is symmetrically fixed on both sides of the mounting frame (5), the top end of the support frame (18) is embedded with a ball, and the ball is in contact with the bottom of the radar body (1). The top of the outer box (2) is provided with a detachable box cover (19), the two sides of the box cover (19) are fixed with a hook (20), the two sides of the outer box (2) are provided with a buckle (21), and the buckle (21) is buckled with the corresponding hook (20). The top of the box cover (19) is symmetrically provided with an assembly block.

2. The radar for bridge monitoring according to claim 1, wherein A handle for gripping and lifting is hinged to the assembly block. A rubber sleeve is provided on the handle. The bottom of the outer box (2) is provided with a receiving groove, the receiving groove is matched with the base plate (16), the bottom of the base plate (16) is symmetrically fixedly installed with a plurality of positioning supports (22), the bottom end of the positioning support (22) is tapered, and the soil is broken. ​ 3. The radar for bridge monitoring according to claim 1, wherein ​ ​ ​ ​ ​ 4. The radar for bridge monitoring according to claim 1, wherein ​ 5. The radar for bridge monitoring according to claim 1, wherein ​ 6. The radar for bridge monitoring according to claim 5, wherein ​ 7. The radar for bridge monitoring according to claim 6, wherein ​ 8. The radar for bridge monitoring according to claim 7, wherein ​ 9. The radar for bridge monitoring according to claim 3, wherein ​ 10. The radar for bridge monitoring according to claim 1, wherein The outer box (2) is provided with an access hole, and a detachable baffle is arranged in the access hole. The baffle is provided with bolts, and the bolts are threadedly connected with the outer box (2).