Novel road pier protection device

Abstract

The novel road pier protection device is mainly composed of a pier anti-collision module and a collision vehicle monitoring module jointly, rotating rings are symmetrically and rotationally installed at the top and the bottom of an anti-collision structure, and adjusting devices are arranged on the outer rings of the rotating rings; a bridge pier anti-collision module is formed by adopting a composite anti-collision structure design of foamed aluminum, an anti-blocking block, a guardrail plate and an air bag and is mounted on the surface of a bridge pier; meanwhile, a core controller based on an AI board card Jeston Nano calculation unit detects a vehicle track and predicts a vehicle motivation, the obtained information is combined, before an accident occurs, an air bag automatically catapults to protect the vehicle and a bridge pier, a buzzer is combined with an OLED display screen to warn a rear vehicle that the accident occurs in front, the system intelligence is improved, and the system safety is improved. And meanwhile, vehicle impact force damage is reduced through cooperation with an adjusting device, and safety is further improved.

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] At present, with the further acceleration of urbanization, the traffic burden is becoming increasingly heavy, and bridge construction is developing rapidly. In this context, accidents involving vehicles hitting bridge piers are frequent, resulting in casualties, falling beams or partial damage to bridge span structures, which are serious hazards. The problem of vehicle-bridge collision has become a major problem that has gradually emerged in the rapid development of three-dimensional transportation. After statistical analysis, it is concluded that vehicle collision is one of the important reasons for bridge collapse during the operation stage, and bridge damage accidents related to vehicle and ship factors during the operation period have accounted for more than 50% of the total accidents. Vehicle and ship factors have become the culprit of bridge damage and even collapse. Vehicle-bridge collision is a frequent event, which will cause serious consequences such as bridge damage, casualties and traffic congestion, and pose a potential danger to the safety of bridges in service.

[0003] At present, the anti-collision devices for bridge piers on the market have several deficiencies: the protection measures are single, and the existing anti-collision devices for bridge piers mostly use guardrails and foam aluminum for protection, which cannot effectively reduce the degree of damage to passengers, vehicles and bridge piers; the degree of informatization is low, and traditional guardrails and anti-collision devices cannot timely warn the vehicles behind and provide information on the road conditions ahead; a complete system has not been formed, and the existing devices lack the warning function after the accident and the information feedback with the traffic control, medical and other departments;

[0004] At the same time, the existing bridge pier anti-collision device is mainly for the protection of bridge piers. Compared with the car and the driver, it cannot greatly improve its safety protection performance, resulting in a direct reaction to the car body after the collision, which has a greater impact on the driver and passengers, and can easily cause life-threatening. Summary of the invention

[0005] The present application proposes a novel 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 scheme: a new type of road pier protection device, including an anti-collision structure and a pier body, the anti-collision structure includes a foam aluminum layer, the foam aluminum layer is installed on the outer ring of the pier body, the outer ring of the foam aluminum layer is evenly provided with anti-obstruction blocks in a ring shape, the outer side of the anti-obstruction blocks is provided with an arc-shaped steel plate connected by bolts, the outer ring of the foam aluminum layer is located between adjacent anti-obstruction blocks and an airbag placement bin is provided, the middle outer ring of the arc-shaped steel plate is provided with a safety airbag, and the inside of the safety airbag is connected to the inside of the airbag placement bin, the inside of the airbag placement bin is provided with an ultrasonic sensor, and the top and bottom of the foam aluminum layer and the arc-shaped steel plate are symmetrically rotatably installed with swivels, and the outer ring of the swivel is provided with an adjustment device.

[0007] Preferably, the size of the airbag is selected according to the outer diameter of the specific pier body, and the airbag can be arranged in a circle or only 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 adjusting device comprises a T-shaped adjusting block movably sleeved on the outer ring of the swivel, two of the T-shaped adjusting blocks form a group, and are located exactly on both sides of an airbag placement bin, a first rotating wheel is rotatably sleeved on the outer rings at the upper and lower ends of the T-shaped adjusting block, a cylinder is fixedly installed inside the swivel at a position directly above the airbag placement bin, adjusting grooves are symmetrically provided on both sides of the cylinder on the outer ring of the swivel, an air guide hole is provided between the port of the cylinder and the adjusting groove, and a second rotating wheel is evenly arranged in a ring shape on the inner ring of the swivel.

[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 impact detection system. After the impact 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 a set threshold, the ejection airbag and the device structure are used to protect the vehicle and the bridge piers together. At the same time, the buzzer and OLED screen alarm are activated, and the position is uploaded to the cloud in time to display dynamic position information.

[0014] Through the setting of the above-mentioned road pier intelligent protection system, urban traffic safety can be effectively guaranteed, pier traffic can be monitored in real time, collision risks can be predicted, casualties and damages can be reduced, and rapid response can be achieved 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] Innovative features of the present invention:

[0016] Safety and reliability: The composite anti-collision structure is composed of foam aluminum, barrier blocks, guardrails and airbags. Finite element analysis has confirmed that it can 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", and the buzzer reminds you 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 the traffic management department, and quickly alarms when an accident occurs to ensure timely control, rescue and maintenance.

[0019] Beneficial effects:

[0020] The application provides a novel road pier protection device, which collects vehicle information through a road test camera and uploads 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 the collision detection system receives the signal from the vehicle trajectory recognition system, it combines the monitoring data of the ultrasonic sensor and the pressure sensor to make a judgment. When the data exceeds the set threshold, the ejection airbag and the device structure are used to protect the vehicle and the pier. At the same time, the buzzer and OLED screen alarm are activated, and the position is uploaded to the cloud in time, and the dynamic position information is displayed for timely management, rescue and maintenance, which greatly improves the safety and systematization of road pier collision prevention.

[0021] A swivel is provided at the top and bottom of the anti-collision structure, and a T-shaped adjustment block is provided on the outside of the swivel and connected with a limit rope. Compared with the prior art, the limit rope connected between the upper and lower T-shaped adjustment blocks can play a limiting effect on the outside of the airbag, so that the airbag can expand differently on both sides when the vehicle collides, thereby playing a role in redirecting the vehicle and reducing the impact of the vertical impact force. In addition, a first rotating wheel is provided on the outer ring of the T-shaped adjustment block, and a second rotating wheel is also provided on the inner ring of the swivel, which can further cooperate with the expansion of the airbag to redirect the car, reduce the impact of the collision, and improve 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 constitute a part of the specification, illustrate the embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0024] The present disclosure may 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 It 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 limit 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 intelligent anti-collision for road viaduct piers;

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

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

[0035] Fig.11 This is a schematic diagram of the anti-collision system.

[0036] Among them: 1. Foam aluminum layer; 2. Arc 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. Limit sliding column; 9. First rotating wheel; 10. Second rotating wheel; 11. Cylinder; 12. Limit 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 the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work 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 provided with an arc-shaped steel plate 2 through bolt connection. The outer ring of the foam aluminum layer 1 is located between adjacent anti-blocking blocks 3 and is provided with an airbag placement bin 4. 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 airbag placement bin 4. Internally, an ultrasonic sensor 6 is arranged inside the airbag placement bin 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, and an adjustment device is arranged 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 bin 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 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 is 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, and the explosive loading is 63.642 g to 138.56 g. After that, the finite element analysis by Ansys shows that after adding the airbag, the maximum deformation displacement of the bridge pier when impacted by a vehicle is reduced by about 65%, and the stress is significantly reduced. Therefore, the above-mentioned design can effectively protect the bridge pier.

[0041] See also Figure 1-Figure 7 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 the two sides of an airbag placement chamber 4. The upper and lower ends of the T-shaped adjusting block 8 are rotatably sleeved with a first rotating wheel 9 at the outer ring. The inside of the rotating ring 7 is located just above the airbag placement chamber 4 and a cylinder 11 is fixedly installed. The outer ring of the rotating ring 7 is symmetrically provided with adjusting 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 adjusting groove 701. The inner ring of the rotating ring 7 is annular. The second rotating wheels 10 are evenly arranged. The second rotating wheels 10 and the first rotating wheels 9 cooperate to 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 to the side, thereby playing a buffering effect and avoiding the strong recoil force after a direct collision from causing life-threatening danger to the vehicle and the driver, etc., 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 the expansion of the airbag 5 can be effectively limited by the limiting rope 12.

[0042] The air pressure changes on both sides are controlled by the cylinder 11, so that 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 of the subsequent safety airbag 5 after inflation.

[0043] Among them, a limit slide post 801 is set on one side of the T-shaped adjustment block 8, and the limit slide post 801 is limited and slidably sleeved in the adjustment groove 701, and a limit rope 12 is connected between the two upper and lower symmetrical T-shaped adjustment blocks 8. The T-shaped adjustment block 8 is T-shaped as a whole, and the limit slide post 801 sleeved in the adjustment groove 701 can slide in a limited manner, so as 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 outside of 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 will hit When reaching the bridge pier, a single or multiple airbags 5 close to the direction of 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 adjusting groove 701 is adjusted by the cylinder 11, so that the T-shaped adjusting blocks 8 at the outside of the two adjusting grooves 701 extend to different lengths. In this way, when the airbag 5 expands, it will not expand completely evenly, so that a bulge in one direction is formed on the 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, and nozzles 14 are evenly arranged on the outer circle of the fire extinguishing device 13. The fire extinguishing device 13 is made based on the principle of a fire extinguisher. When it is detected that a vehicle hits the bridge pier, not only will the bridge 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 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 impact detection system. After the impact 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 are activated, and the location is uploaded to the cloud in time to display dynamic location information.

[0046] Vehicle Identification System:

[0047] A separate vehicle collision detection algorithm model is 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 judged that there is a tendency to hit the pier, and combined with other sensor data to decide whether to pop out the airbag.

[0048] Anti-collision system:

[0049] This system integrates collision detection and ultrasonic ranging modules, and works in conjunction with dual controllers. Once a four-wheeled vehicle is identified, the control center sends instructions to the STM32 module and simultaneously obtains ultrasonic ranging data and vehicle speed information. The pressure sensor is responsible for monitoring collision events and their intensity. When the ultrasonic ranging is less than 20cm or the pressure exceeds the preset threshold of 2.5Mpa, the system triggers the airbag ejection mechanism and quickly inflates the airbag to adjust the vehicle's driving path and achieve safety protection, including:

[0050] Ultrasonic ranging module: Use the ultrasonic propagation speed to measure the time interval to achieve accurate ranging.

[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: Identify vehicle types and send signals to the STM32 module to activate airbags for collision avoidance only for four-wheel vehicles.

[0053] The anti-collision structure can be composed of multiple independent units, which are combined when installed on the bridge piers. The device is installed on sections where bridge piers are frequently hit, as well as key sections. By analyzing more than 30 types of vehicles, the center point of the device installation position is determined to be 510mm from the ground based on factors such as the market share of vehicle models, the height of the anti-collision beam, and the damage caused by the vehicle hitting the bridge pier.

[0054] When the pressure sensor detects an impact, the resistance wire generates a temperature of over 300°C, triggering the explosion of the explosives, and the airbag expands within 30 milliseconds. The airbag is made of UHMWPE composite material, which has high toughness, impact strength and sealing, and can effectively buffer and prevent collisions. According to Ansys finite element analysis, after adding the airbag, the maximum deformation displacement of the bridge pier when hit by a vehicle is reduced by about 65%, and the force is significantly reduced, effectively protecting the bridge pier, vehicles and drivers, and reducing losses.

[0055] Early warning system:

[0056] The high-contrast, thin, wide-angle, and fast-response OLED screen displays warning information, effectively alerting vehicles behind. Combined with the system's integrated 4G wireless transmission and Internet of Things technology, the collision information is fed back to the cloud platform in real time, achieving 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 supply. When there is sufficient sunlight, the solar panels generate electricity and charge the batteries; when there is insufficient light, the batteries supply power, ensuring energy saving and stability.

[0059] As urban traffic becomes increasingly busy and road safety continues to receive more attention, the device can effectively ensure urban traffic safety, monitor bridge pier traffic in real time, predict collision risks, reduce casualties and damages, and respond quickly after an accident to achieve rapid rescue and diversion, significantly improving the level of urban traffic safety and providing safer and smarter 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 comprising a foam aluminum layer (1), the foam aluminum layer (1) being mounted on the outer ring of the pier body (15), the outer ring of the foam aluminum layer (1) being evenly provided with anti-blocking blocks (3) in a ring shape, the outer side of the anti-blocking blocks (3) being provided with an arc-shaped steel plate (2) connected by bolts, the outer ring of the foam aluminum layer (1) being provided with an airbag placement bin (4) at a position between adjacent anti-blocking blocks (3), the middle outer ring of the arc-shaped steel plate (2) being provided with a safety airbag (5), and the interior of the safety airbag (5) being connected to the interior of the airbag placement bin (4), the interior of the airbag placement bin (4) being provided with an ultrasonic sensor (6), the top and bottom of the foam aluminum layer (1) and the arc-shaped steel plate (2) being symmetrically rotatably provided with a swivel (7), and the outer ring of the swivel (7) being provided with an adjustment device.

2. A novel road pier protection device according to claim 1, characterized in that: The size of the safety airbag (5) is selected according to the outer diameter of the specific bridge pier body (15), and the safety airbag (5) can be arranged in a circle or only arranged facing the road direction. The safety airbag (5) is inflated and ejected by chemical explosives (sodium azide and guanidine nitrate).

3. A novel road pier protection device according to claim 2, characterized in that: The adjustment device comprises a T-shaped adjustment block (8) movably sleeved on the outer ring of a rotating ring (7), two of the T-shaped adjustment blocks (8) form a group and are located exactly on the two 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 adjustment block (8), a cylinder (11) is fixedly installed inside the rotating ring (7) at a position directly above the airbag placement chamber (4), the outer ring of the rotating ring (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), and a second rotating wheel (10) is evenly arranged in an annular shape on the inner ring of the rotating ring (7).

4. A new type of road pier protection device according to claim 3, characterized in that: A limit sliding column (801) is provided on one side of the T-shaped adjustment block (8), and the limit sliding column (801) is limitedly slidably sleeved inside the adjustment groove (701), and a limit rope (12) is connected between the two T-shaped adjustment blocks (8) that are symmetrical in upper and lower directions.

5. A novel road pier protection device according to claim 1, characterized in that: A fire extinguishing device (13) is fixedly installed on the top of the rotating ring (7) located at the top, and nozzles (14) are evenly arranged on the outer ring of the fire extinguishing device (13).

6. A novel road pier protection device according to claim 3, 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 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 a signal from the vehicle trajectory recognition system, it combines the ultrasonic and pressure sensor monitoring data for 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 together. At the same time, the buzzer and OLED screen alarm are activated, and the position is uploaded to the cloud in time to display dynamic position information.

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