A new type of road pier protection device

Abstract

The present application discloses a novel road pier protection device, which is mainly composed of a pier anti-collision module and a collision vehicle monitoring module. The top and bottom of the anti-collision structure are symmetrically mounted with swivels, and the outer ring of the swivel is provided with an adjustment device. The pier anti-collision module is formed by adopting a composite anti-collision structure design of foam aluminum, anti-blocking blocks, guardrails, and airbags, and is installed on the surface of the pier. At the same time, the core controller of the AI ​​board Jeston Nano computing unit detects the vehicle trajectory and predicts the vehicle's motivation. Combined with the information obtained, the airbag will automatically eject to protect the vehicle and the pier before the accident occurs, and a buzzer alarm combined with an OLED display screen will be used to warn the rear vehicle of an accident in front, thereby improving the intelligence of the system. At the same time, the adjustment device is used to reduce the damage caused by the vehicle's impact, thereby further improving safety.

Description

Technical Field

[0001] The present application relates to the technical field of bridge pier anti-collision, and in particular to a novel road bridge pier protection device. Background Art

[0002] Currently, with the further acceleration of urbanization, the traffic burden is becoming increasingly heavy, and bridge construction is developing rapidly. Against this backdrop, vehicle collisions with bridge piers are becoming increasingly frequent, resulting in casualties, collapsed beams, or partial damage to bridge span structures, posing serious risks. Vehicle-bridge pier collisions have become a major issue that has become increasingly prominent during the rapid development of multi-dimensional transportation. Statistical analysis has shown that vehicle collisions are a major cause of bridge collapse during operation, and bridge damage accidents related to vehicle and vessel factors during operation account for over 50% of all accidents. Vehicle and vessel factors have become the primary culprit for bridge damage and even collapse. Vehicle-bridge collisions are a frequent occurrence, causing serious consequences such as bridge damage, casualties, and traffic congestion, and pose a potential threat to the safety of existing bridges.

[0003] Currently, the bridge pier anti-collision devices on the market have several shortcomings: The protection measures are limited. Existing bridge pier anti-collision devices mostly use guardrails and foam aluminum for protection, which cannot effectively reduce the damage to passengers, vehicles and bridge piers. The level of informationization is low. Traditional guardrails and anti-collision devices cannot promptly warn oncoming vehicles or provide information about road conditions ahead. The system has not formed a complete system. The existing devices lack post-accident warning functions and information feedback to traffic control, medical and other departments.

[0004] At the same time, the existing bridge pier anti-collision device is mainly used to protect the bridge pier. Compared with the car and the driver, it cannot greatly improve its safety protection performance. As a result, after the collision, all the reactions are directly reflected on the car body, which has a greater impact on the driver and passengers, and can easily cause life-threatening danger. Summary of the Invention

[0005] This application proposes a new type of road pier protection device, which has the advantages of good anti-collision safety effect and high degree of intelligent digitization, and is used to solve the problems raised by the background technology.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: a new type of road pier protection device, comprising an anti-collision structure and a pier body, the anti-collision structure comprising a foam aluminum layer, the foam aluminum layer being installed on the outer ring of the pier body, the outer ring of the foam aluminum layer being evenly provided with anti-obstruction blocks in a ring shape, the outer side of the anti-obstruction blocks being provided with an arc-shaped steel plate connected by bolts, the outer ring of the foam aluminum layer being provided with an airbag placement bin at a position between adjacent anti-obstruction blocks, the middle outer ring of the arc-shaped steel plate being provided with an airbag, and the inside of the airbag being connected to the inside of the airbag placement bin, the inside of the airbag placement bin being provided with an ultrasonic sensor, the top and bottom of the foam aluminum layer and the arc-shaped steel plate being symmetrically rotatably provided with a swivel, and the outer ring of the swivel being provided with an adjustment device.

[0007] Preferably, the size of the airbag is selected according to the outer diameter of the specific bridge pier body, and the airbag can be arranged in a circle or only arranged facing the road direction. The airbag is inflated and ejected using chemical explosives (sodium azide and guanidine nitrate).

[0008] The composite honeycomb structure formed by the above structure can effectively improve the anti-collision effect and significantly reduce the deformation of the bridge pier to about 65% of the original.

[0009] Preferably, the adjustment device includes a T-shaped adjustment block movably sleeved on the outer ring of the swivel, two of the T-shaped adjustment blocks form a group, and are located exactly on both sides of an airbag placement bin. The upper and lower ends of the T-shaped adjustment block are rotatably sleeved on the outer rings, and a cylinder is fixedly installed on the inside of the swivel directly above the airbag placement bin. Adjustment grooves are symmetrically provided on the outer ring of the swivel on both sides of the cylinder, and an air guide hole is provided between the port of the cylinder and the adjustment groove. The inner ring of the swivel is evenly and annularly provided with a second wheel.

[0010] Preferably, a limit sliding column is provided on one side of the T-shaped adjustment block, and the limit sliding column is limitedly slidably sleeved inside the adjustment groove, and a limit rope is connected between the two T-shaped adjustment blocks that are symmetrical in upper and lower directions.

[0011] Through the above arrangement, the expansion of the airbag is limited by the limit rope, which can improve the vertical impact force damage during vehicle collision, and the vehicle redirection can further improve the safety protection for the driver.

[0012] Preferably, a fire extinguishing device is fixedly installed on the top of the rotating ring located above, and nozzles are evenly arranged on the outer ring of the fire extinguishing device.

[0013] Preferably, the anti-collision structure also includes an intelligent protection system for road and bridge piers based on visual perception, which mainly includes a Jeston Nano controller, an STM32 controller, ultrasonic waves, pressure sensors, etc. Specifically, vehicle information is collected through a road test camera and uploaded to a vehicle trajectory warning system. When a vehicle is detected, the vehicle trajectory recognition system transmits the information to the collision detection system. After the collision detection system receives the signal from the vehicle trajectory recognition system, it combines the ultrasonic and pressure sensor monitoring data for judgment. When the data exceeds the set threshold, the ejection airbag and the device structure are used to protect the vehicle and the bridge pier together, and the buzzer and OLED screen alarm are activated at the same time, and the location is uploaded to the cloud in time to display dynamic location information.

[0014] Through the installation of the above-mentioned road and bridge pier intelligent protection system, urban traffic safety can be effectively guaranteed, bridge pier traffic can be monitored in real time, collision risks can be predicted, casualties and damage can be reduced, and a rapid response can be made after an accident to achieve rapid rescue and diversion, significantly improving the level of urban traffic safety and providing safer and more intelligent protection solutions.

[0015] The innovative features of the present invention are:

[0016] Safety and reliability: The composite anti-collision structure composed of foam aluminum, anti-blocking blocks, guardrails and airbags has been confirmed by finite element analysis to significantly reduce the deformation of bridge piers to about 65% of the original value.

[0017] High degree of information visualization: The OLED screen displays a flashing warning of "accident ahead", which is combined with a buzzer reminder to enhance driving safety.

[0018] Real-time rescue: The system integrates 4G wireless transmission and Internet of Things technology to provide real-time feedback of bridge pier information to traffic management departments and quickly issue an alarm when an accident occurs, ensuring timely control, rescue and maintenance.

[0019] Beneficial effects:

[0020] This application provides a novel road and bridge pier protection device that uses a road test camera to collect vehicle information and upload it to a vehicle trajectory warning system. When a vehicle is detected, the vehicle trajectory recognition system transmits the information to the collision detection system. After receiving the signal from the vehicle trajectory recognition system, the collision detection system combines the monitoring data of the ultrasonic sensor and the pressure sensor to make a judgment. When the data exceeds a set threshold, the ejection airbag and the device structure are used to protect the vehicle and the bridge pier. At the same time, a buzzer and OLED screen alarm are activated, and the location is promptly uploaded to the cloud, displaying dynamic location information for timely management, rescue, and maintenance. This greatly improves the safety and systematization of road and bridge pier collision prevention.

[0021] The top and bottom of the anti-collision structure are provided with swivels, and T-shaped adjustment blocks are provided on the outside of the swivels and connected to limit ropes. Compared with the existing technology, the limit ropes connected between the upper and lower T-shaped adjustment blocks can play a limiting role on the outside of the airbag, so that the airbag can expand differently on both sides when the vehicle collides, thereby redirecting the vehicle and reducing the impact of the vertical impact force. In addition, the outer ring of the T-shaped adjustment block is provided with a first rotating wheel, and the inner ring of the swivel is also provided with a second rotating wheel. The vehicle can be redirected according to the expansion of the airbag, reducing the impact of the collision and improving the protection safety of the bridge pier and the driver.

[0022] At the same time, the fire extinguishing device installed on the swivel, combined with sensor perception, can further avoid fires caused by vehicle collisions and improve the protection effect for drivers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments disclosed herein and, together with the description, serve to explain the principles disclosed herein.

[0024] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a front view of the overall structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall installation of the structure of the present invention;

[0028] Figure 4 It is a partial structural cross-sectional view of the present invention;

[0029] Figure 5 for Figure 2 Middle AA section;

[0030] Figure 6 This is a schematic diagram of the structure of the adjustment block and the limiting rope of the present invention;

[0031] Figure 7 for Figure 4 Enlarged view of point B in the middle;

[0032] Figure 8 This is the overall framework diagram of the intelligent anti-collision system for elevated road piers;

[0033] Figure 9 This is the layout diagram of the intelligent anti-collision protection system for the road viaduct piers;

[0034] Figure 10 This is the structure diagram of PP-YOLOE;

[0035] Figure 11 Schematic diagram of the anti-collision system.

[0036] Among them: 1. Foam aluminum layer; 2. Arc-shaped steel plate; 3. Anti-obstruction block; 4. Airbag placement compartment; 5. Safety airbag; 6. Ultrasonic sensor; 7. Swivel; 701. Adjustment groove; 702. Air guide hole; 8. T-shaped adjustment block; 801. Limiting slide column; 9. First rotor; 10. Second rotor; 11. Cylinder; 12. Limiting rope; 13. Fire extinguishing device; 14. Nozzle; 15. Pier body. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] See also Figure 1-Figure 5 A novel road bridge pier protection device includes an anti-collision structure and a bridge pier body 15. The anti-collision structure includes a foam aluminum layer 1, which is installed on the outer ring of the bridge pier body 15. The outer ring of the foam aluminum layer 1 is evenly provided with anti-blocking blocks 3 in a ring shape. The outer side of the anti-blocking blocks 3 is connected with an arc-shaped steel plate 2 by bolts. The outer ring of the foam aluminum layer 1 is provided with an airbag placement chamber 4 between adjacent anti-blocking blocks 3. The middle outer ring of the arc-shaped steel plate 2 is provided with a safety airbag 5, and the airbag 5 is internally connected to the airbag placement chamber 4. Internally, an ultrasonic sensor 6 is provided inside the airbag placement chamber 4, and a swivel 7 is symmetrically installed on the top and bottom of the foam aluminum layer 1 and the curved steel plate 2. An adjustment device is provided at the outer ring of the swivel 7. A composite anti-collision structure is formed by the foam aluminum layer 1, the curved steel plate 2, the anti-blocking block 3, the airbag placement chamber 4 and the airbag 5. This composite structure refers to the honeycomb structure, the innermost layer is foam aluminum, the interlayer adopts a honeycomb structure, and the outermost layer adopts a steel plate, forming a new type of anti-collision structure, which can effectively improve the anti-collision effect.

[0039] The size of the airbag 5 is selected according to the outer diameter of the specific pier body 15, and the airbag 5 can be arranged in a circle or only facing the road direction. The airbag 5 is inflated and ejected using chemical explosives (sodium azide and guanidine nitrate).

[0040] In the present invention, a simulation test was conducted on a bridge pier with a diameter of 1260 mm, a length of 1485 mm, and a height of 510 mm using an airbag 5 with explosive loading ranging from 63.642 g to 138.56 g. Ansys finite element analysis showed that the addition of the airbag reduced the maximum deformation displacement of the bridge pier caused by a vehicle impact by approximately 65%, significantly alleviating the stress. Therefore, the above-mentioned design can effectively protect the bridge pier.

[0041] See also Figure 1-Figure 7 The adjustment device includes a T-shaped adjustment block 8 movably sleeved on the outer ring of the swivel 7. Two T-shaped adjustment blocks 8 form a group and are located exactly on both sides of an airbag placement chamber 4. The upper and lower outer rings of the T-shaped adjustment block 8 are rotatably sleeved with a first runner 9. The interior of the swivel 7 is located just above the airbag placement chamber 4 and is fixed with a cylinder 11. The outer ring of the swivel 7 is symmetrically provided with adjustment grooves 701 on both sides of the cylinder 11. An air guide hole 702 is provided between the port of the cylinder 11 and the adjustment groove 701. The inner ring of the swivel 7 is annular. The second rotating wheels 10 are evenly arranged. The cooperation between the second rotating wheels 10 and the first rotating wheels 9 can enable the swivel 7 to rotate after the vehicle collides with the anti-collision structure, which is used to play a steering role, thereby guiding the vehicle that hits the airbag 5 laterally, thereby playing a buffering effect, avoiding the strong recoil force after a direct collision from causing life-threatening danger to the vehicle and the driver, and the T-shaped adjustment blocks 8 are symmetrically arranged in the upper and lower positions and are located on both sides of the airbag 5, and can effectively limit the expansion of the airbag 5 through the limiting rope 12.

[0042] The air pressure changes on both sides are controlled by the cylinder 11, and the air pressure inside the adjustment groove 701 is controlled by the conductivity of the air guide hole 702, thereby realizing the sliding adjustment of the limit slide 801 inside the adjustment groove 701, and the two cylinders 11 located at the corresponding upper and lower positions are synchronously controlled and adjusted, which can ensure that the limit rope 12 remains in a vertical state, which is more conducive to the upper and lower uniformity after the subsequent expansion of the airbag 5.

[0043] Among them, a limit slide 801 is set on one side of the T-shaped adjustment block 8, and the limit slide 801 is limited and slidably sleeved in the adjustment groove 701, and a limit rope 12 is connected between the two symmetrical T-shaped adjustment blocks 8. The T-shaped adjustment block 8 is T-shaped as a whole, and the limit slide 801 sleeved in the adjustment groove 701 can slide in a limited manner, which is used to adjust the position of the T-shaped adjustment block 8 as a whole on the outside of the swivel 7, thereby moving the limit rope 12 to the position outside the airbag 5. At the same time, the limit ropes 12 set up up and down are just located on both sides of the airbag 5, and the limit ropes 12 have a certain toughness, so that when the ultrasonic sensor 6 detects that the car is about to collide, When reaching the bridge pier, a single or multiple airbags 5 close to the car will be inflated. However, since it is detected that the car does not necessarily hit the bridge pier vertically, the approximate direction of the car can be determined by the detection of the sensor. At this time, the air pressure inside the adjustment groove 701 is adjusted by the cylinder 11, so that the T-shaped adjustment blocks 8 outside the two adjustment grooves 701 extend to different lengths. In this way, when the airbag 5 expands, it does not expand completely evenly, so that a bulge in one direction is formed on its outside. At this time, when the car hits it, it can be redirected to one side, thereby avoiding the intensity of the car impact and playing a role of buffering protection.

[0044] See also Figure 1-Figure 3 A fire extinguishing device 13 is fixedly installed on the top of the rotating ring 7 above. Nozzles 14 are evenly arranged on the outer ring of the fire extinguishing device 13. The fire extinguishing device 13 is made based on the principle of a fire extinguisher. When a vehicle is detected hitting the bridge pier, not only will the pier body 15 expand, but the fire extinguishing device 13 at the top of the corresponding position will also control the nozzle 14 to spray dry powder outward to avoid fire caused by car collision, thereby further improving safety.

[0045] See also Figure 1-10 The anti-collision structure also includes an intelligent protection system for road and bridge piers based on visual perception, which mainly includes a Jeston Nano controller, an STM32 controller, ultrasonic and pressure sensors, etc. Specifically, vehicle information is collected through road test cameras and uploaded to the vehicle trajectory warning system. When a vehicle is detected, the vehicle trajectory recognition system transmits the information to the collision detection system. After the collision detection system receives the signal from the vehicle trajectory recognition system, it combines the ultrasonic and pressure sensor monitoring data for judgment. When the data exceeds the set threshold, the ejection airbag and the device structure will jointly protect the vehicle and the bridge pier. At the same time, the buzzer and OLED screen alarm will be activated, and the location will be uploaded to the cloud in time to display dynamic location information.

[0046] Vehicle Identification System:

[0047] A separate vehicle collision detection algorithm model was trained using Baidu PaddlePaddle's PP-YOLOE algorithm and ch_PP-OCRv3 algorithm set. It is mainly composed of the vehicle detection / tracking model PP-YOLOE-L, the license plate detection model ch_PP-OCRv3_det, and the license plate recognition model ch_PP-OCRv3_rec. The collision detection module uses the camera to define the warning area, track, detect and identify the license plate. When the vehicle enters the area, it is determined to have a tendency to hit the pier, and combined with other sensor data to decide whether to deploy the airbag.

[0048] Anti-collision system:

[0049] This system integrates collision detection and ultrasonic ranging modules, operating in conjunction with dual controllers. Once a four-wheeled vehicle is identified, the control center sends a command to the STM32 module and simultaneously obtains ultrasonic ranging data and vehicle speed information. A pressure sensor monitors the impact event and its intensity. When the ultrasonic ranging value falls below 20cm or the pressure exceeds a preset threshold of 2.5MPa, the system triggers the airbag ejection mechanism, rapidly inflating the airbag to adjust the vehicle's travel path and achieve safety protection.

[0050] Ultrasonic ranging module: uses the propagation speed of ultrasonic waves to measure time intervals and achieve accurate distance measurement.

[0051] Strain gauge: triggers the airbag to eject when the impact force reaches a threshold, and works together with foam aluminum and other structures to prevent collisions.

[0052] Jeston Nano control center: Identifies vehicle types and sends signals to the STM32 module to activate airbag collision avoidance only for four-wheeled vehicles.

[0053] The anti-collision structure can be composed of multiple independent units, which are combined when installed on bridge piers. The device is installed in sections of road where bridge pier collision accidents are frequent, as well as in key sections. By analyzing over 30 types of vehicles and taking into account factors such as market share, anti-collision beam height, and damage caused by vehicle collisions with bridge piers, the center point of the device's installation location was determined to be 510 mm above the ground.

[0054] When the pressure sensor detects an impact, the resistance wire generates a temperature exceeding 300°C, triggering the explosive to explode, and the airbag inflates within 30 milliseconds. Made from UHMWPE composite material, the airbag offers high toughness, impact strength, and sealing properties, effectively cushioning and protecting against collisions. Ansys finite element analysis shows that the addition of the airbag reduces the maximum deformation of the bridge piers impacted by vehicles by approximately 65%, significantly alleviating stress and effectively protecting the piers, vehicles, and drivers, minimizing damage.

[0055] Early warning system:

[0056] The high-contrast, thin, wide-angle, and fast-response OLED screen displays warning information, effectively alerting vehicles behind. The system integrates 4G wireless transmission and IoT technology to provide real-time feedback of collision information to the cloud platform, enabling rapid processing and precise guidance.

[0057] Power supply system:

[0058] The system combines municipal power supply with energy-saving and environmentally friendly solar energy and battery power. When the sun is bright, the solar panels generate electricity and charge the batteries; when the sun is low, the batteries provide power, ensuring energy conservation and stability.

[0059] As urban traffic becomes increasingly busy and road safety continues to receive increasing attention, this device can effectively ensure urban traffic safety, monitor bridge pier traffic in real time, predict collision risks, reduce casualties and damage, and respond quickly after an accident to achieve rapid rescue and diversion, significantly improving the level of urban traffic safety and providing safer and more intelligent protection solutions.

Claims

1. A new type of road pier protection device, characterized in that: include: An anti-collision structure and a pier body (15), the anti-collision structure includes a foam aluminum layer (1), the foam aluminum layer (1) is installed on the outer ring of the pier body (15), the outer ring of the foam aluminum layer (1) is evenly provided with anti-blocking blocks (3) in a ring shape, the outer side of the anti-blocking blocks (3) is provided with an arc-shaped steel plate (2) connected by bolts, the outer ring of the foam aluminum layer (1) is provided with an airbag placement chamber (4) at a position between adjacent anti-blocking blocks (3), the middle outer ring of the arc-shaped steel plate (2) is provided with a safety airbag (5), and the inside of the safety airbag (5) is connected to the inside of the airbag placement chamber (4), the inside of the airbag placement chamber (4) is provided with an ultrasonic sensor (6), the top and bottom of the foam aluminum layer (1) and the arc-shaped steel plate (2) are symmetrically rotatably provided with a rotating ring (7), and the outer ring of the rotating ring (7) is provided with an adjustment device; The size of the airbag (5) is selected according to the outer diameter of the specific bridge pier body (15), and the airbag (5) is arranged in a circle or only arranged facing the road direction. The airbag (5) is inflated and ejected by chemical explosives. The adjusting device comprises a T-shaped adjusting block (8) movably sleeved on the outer ring of the rotating ring (7), two T-shaped adjusting blocks (8) form a group and are located exactly on both sides of an airbag placement chamber (4), a first rotating wheel (9) is rotatably sleeved on the outer rings of the upper and lower ends of the T-shaped adjusting block (8), a cylinder (11) is fixedly installed in the interior of the rotating ring (7) at a position just above the airbag placement chamber (4), an adjusting groove (701) is symmetrically opened on the outer ring of the rotating ring (7) at both sides of the cylinder (11), an air guide hole (702) is opened between the port of the cylinder (11) and the adjusting groove (701), and a second rotating wheel (10) is evenly arranged in an annular shape on the inner ring of the rotating ring (7); A limiting sliding post (801) is provided on one side of the T-shaped adjustment block (8), and the limiting sliding post (801) is slidingly sleeved inside the adjustment groove (701), and a limiting rope (12) is connected between the two upper and lower symmetrical T-shaped adjustment blocks (8); A fire extinguishing device (13) is fixedly installed on the top of the rotating ring (7) located above, and nozzles (14) are evenly arranged on the outer ring of the fire extinguishing device (13).

2. A novel road pier protection device according to claim 1, characterized in that: The anti-collision structure also includes an intelligent protection system for road and bridge piers based on visual perception, which mainly includes a Jeston Nano controller, an STM32 controller, ultrasonic waves, pressure sensors, etc. Specifically, vehicle information is collected through a road test camera and uploaded to the vehicle trajectory warning system. When a vehicle is detected, the vehicle trajectory recognition system transmits the information to the collision detection system. After the collision detection system receives the signal from the vehicle trajectory recognition system, it combines the ultrasonic and pressure sensor monitoring data for judgment. When the data exceeds the set threshold, the ejection airbag and the device structure are used to protect the vehicle and bridge piers together. At the same time, the buzzer and OLED screen alarm are activated, and the location is uploaded to the cloud in time to display dynamic location information.

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