A collision alarm device for bridge height restriction guardrails

Abstract

This patent discloses a collision alarm device for a bridge height restriction guardrail, including a height restriction crossbar and two uprights. The two uprights are located on the left and right sides of the height restriction crossbar. A connecting rod is fixedly installed at the top of the upright, and a fixing plate is fixedly installed at the top of the connecting rod. A buzzer and a power supply are fixedly installed at the bottom of the fixing plate. The top of the fixing plate has a sliding hole, and a sliding rod is slidably installed on the inner side wall of the sliding hole. The bottom end of the sliding rod is fixedly installed on the top of the side wall of the height restriction crossbar. This patent replaces the traditional buzzer switch with a fixed metal plate and a movable metal plate. Both are relatively large. When a vehicle hits the height restriction crossbar, it will drive the movable metal plate to move upward and contact the fixed metal plate, triggering the buzzer alarm. If the vehicle drives the height restriction crossbar to continue to move upward, the movable metal plate slides relative to the fixed metal plate, increasing the continuous closing range of the traditional switch and avoiding damage.

Description

Technical Field

[0001] This patent relates to the field of alarm device technology, specifically a collision alarm device for bridge height restriction guardrails. Background Technology

[0002] Height restriction barriers are installed in the underpasses of bridges to prevent excessively tall vehicles from colliding with the bridge deck. Traditional height restriction barriers consist of horizontal and vertical bars. To prevent direct impacts, the horizontal bars are designed to cushion the impact, increasing their lifespan. The upward movement of the horizontal bar triggers a buzzer switch, activating an alarm. However, if the bar continues to move upward, it may exceed the switch's closing range, damaging it. Therefore, we propose a collision alarm device for bridge height restriction barriers. Utility Model Content

[0003] The purpose of this patent is to provide a collision alarm device for bridge height restriction guardrails to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this patent provides the following technical solution: a collision alarm device for a bridge height restriction guardrail, comprising a height restriction crossbar and two vertical poles, the two vertical poles being located on the left and right sides of the height restriction crossbar; A connecting rod is fixedly installed at the top of the upright, a fixing plate is fixedly installed at the top of the connecting rod, a buzzer and a power supply are fixedly installed at the bottom of the fixing plate, a sliding hole is provided at the top of the fixing plate, a sliding rod is slidably installed on the inner side wall of the sliding hole, the bottom end of the sliding rod is fixedly installed on the top side wall of the height limiting crossbar, a spring is sleeved on the side wall of the sliding rod, the top end of the spring is fixedly installed on the bottom of the fixing plate, and the bottom end of the spring is fixedly installed on the top side wall of the height limiting crossbar. The inner side wall of the upright is provided with an installation groove, a horizontal column is fixedly installed on the inner side wall of the installation groove, an upright plate is fixedly installed at the end of the horizontal column, a fixed metal plate is fixedly installed at the upper inner side of the upright plate, a sliding groove is provided at the lower inner side of the upright plate, a slider is slidably installed in the sliding groove, a movable metal plate is fixedly installed at the end of the slider, a connecting block is fixedly installed at the bottom inner side of the movable metal plate, and the inner end of the connecting block is fixed to the end of the height limiting horizontal bar. The fixed metal plate, buzzer, power supply, and movable metal plate are connected in series via wires.

[0005] Preferably, the top wall of the mounting groove is provided with a through hole, which is located on the upper side of the movable metal sheet.

[0006] Preferably, a laser rangefinder is fixedly installed on the bottom of the fixing plate.

[0007] Preferably, the laser rangefinder and the connecting rod are diagonally distributed.

[0008] Preferably, a letter sticker is fixedly installed on the front end of the side wall of the upright.

[0009] Preferably, the letter sticker is a fluorescent sticker.

[0010] Compared with the prior art, the beneficial effects of this patent are as follows: This patent transforms the traditional buzzer switch into a fixed metal plate and a movable metal plate, both of which are relatively high. When the vehicle hits the height limit bar, it will drive the movable metal plate to move upward and make it contact the fixed metal plate, triggering the buzzer alarm. If the vehicle drives the height limit bar to continue to move upward, the movable metal plate and the fixed metal plate will slide relative to each other, increasing the continuous closing range of the traditional switch and avoiding damage. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall patent.

[0012] Figure 2 This is a partial structural diagram of this patent.

[0013] Figure 3 This is a perspective view of the fixing plate of this patent.

[0014] In the diagram: 1. Height-limiting crossbar, 2. Upright pole, 3. Connecting rod, 4. Fixing plate, 5. Buzzer, 6. Power supply, 7. Sliding rod, 8. Spring, 9. Mounting slot, 10. Horizontal column, 11. Upright plate, 12. Fixing metal plate, 13. Sliding groove, 14. Sliding block, 15. Moving metal plate, 16. Connecting block, 17. Through hole, 18. Laser rangefinder, 19. Letter sticker. Detailed Implementation

[0015] The technical solutions of this patent embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this patent, and not all of them. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0016] Please see Figure 1 , Figure 2 , Figure 3 This patent provides a technical solution: a collision alarm device for a bridge height restriction guardrail, including a height restriction horizontal bar 1 and two vertical bars 2, which are located on the left and right sides of the height restriction horizontal bar 1. A connecting rod 3 is fixedly installed at the top of the upright pole 2. A fixing plate 4 is fixedly installed at the top of the connecting rod 3. A buzzer 5 and a power supply 6 are fixedly installed at the bottom of the fixing plate 4. A sliding hole is provided at the top of the fixing plate 4. A sliding rod 7 is slidably installed on the inner side wall of the sliding hole. The bottom end of the sliding rod 7 is fixedly installed on the top side wall of the height limiting crossbar 1. A spring 8 is sleeved on the side wall of the sliding rod 7. The top end of the spring 8 is fixedly installed on the bottom of the fixing plate 4. The bottom end of the spring 8 is fixedly installed on the top side wall of the height limiting crossbar 1. The inner side of the side wall of the upright pole 2 is provided with an installation groove 9. A horizontal column 10 is fixedly installed on the inner side wall of the installation groove 9. An upright plate 11 is fixedly installed at the end of the horizontal column 10. A fixed metal plate 12 is fixedly installed at the upper inner side of the upright plate 11. A sliding groove 13 is provided at the lower inner side of the upright plate 11. A slider 14 is slidably installed in the sliding groove 13. A movable metal plate 15 is fixedly installed at the end of the slider 14. A connecting block 16 is fixedly installed at the bottom inner side of the movable metal plate 15. The inner end of the connecting block 16 is fixed to the end of the height limiting horizontal bar 1. The fixed metal plate 12, the buzzer 5, the power supply 6, and the movable metal plate 15 are connected in series by wires.

[0017] Limit guardrails are installed in the underpasses of the bridge to prevent excessively tall vehicles from hitting the bottom of the bridge. Traditional height restriction bars consist of horizontal bars and vertical bars. To prevent vehicles from directly hitting the horizontal bars, the bars can be cushioned upwards when a vehicle hits them, thus increasing the service life of the height restriction bars. When the horizontal bars move upwards, they will trigger the closing of the buzzer switch, thereby triggering an alarm. However, if the horizontal bars continue to move upwards, they will exceed the closing range of the switch, thus causing damage to the switch.

[0018] This solution replaces the traditional buzzer switch with a fixed metal plate and a movable metal plate, both of which are relatively tall. When a vehicle hits the height limit bar, it will cause the movable metal plate to move upward and contact the fixed metal plate, triggering the buzzer alarm. If the vehicle continues to move the height limit bar upward, the movable metal plate will slide relative to the fixed metal plate, increasing the continuous closing range of the traditional switch and preventing damage.

[0019] Height restriction crossbar 1: Made of high-strength steel (such as Q345), with the length customized according to the width of the bridge opening, a diameter of approximately 100-150mm, and a wall thickness of 10-15mm.

[0020] Pole 2: Made of high-strength steel (such as Q345), with height customized according to height restrictions (such as 4m, 4.5m, etc.), diameter of approximately 150-200mm, and wall thickness of 12-18mm; the letter sticker 19 on the front of the side wall is a fluorescent sticker, made of fluorescent material with adhesive backing, and its size is customized according to the side wall of pole 2. The fluorescence visibility distance in dark environments is ≥50m.

[0021] Link 3: Made of steel (e.g., Q235), approximately 200-300mm in length, with a rectangular cross-section (e.g., 80mm×50mm).

[0022] Fixed plate 4: Made of stainless steel (such as 304), with dimensions of approximately 500mm×300mm×20mm; the bottom is fixedly mounted with a laser rangefinder 18, made of engineering plastic with optical components, measuring range of 0.1-50m, accuracy of ±1mm, working voltage of DC5-12V, and diagonally distributed with the connecting rod 3.

[0023] Buzzer 5: Made of engineering plastic with metal components, operating voltage DC12V / 24V, sound pressure level ≥100dB, frequency 2 - 4kHz.

[0024] Power supply 6: Lithium battery or lead-acid battery, output voltage DC12V / 24V, capacity to be selected according to battery life requirements (e.g. 12V 10Ah).

[0025] Slide 7: Made of stainless steel (e.g., 304), with a diameter of approximately 30-50mm, and a length customized according to the spring travel (e.g., 200-300mm).

[0026] Spring 8: Made of spring steel (such as 65Mn), with a wire diameter of about 8-12mm, an outer diameter of about 80-120mm, a free length of about 200-300mm, and a compression of ≥100mm.

[0027] Vertical plate 11: It is an insulating board (such as epoxy resin board), with a thickness of about 20-30mm, a height of about 300-500mm, and a width that matches the mounting groove.

[0028] Fixed metal plate 12 and movable metal plate 15: made of copper alloy (such as brass), with a thickness of about 2-5mm and an area of ​​about 50mm×50mm-100mm×100mm. The contact ends are silver-plated to enhance conductivity.

[0029] Specifically, the top wall of the mounting groove 9 is provided with a through hole 17, which is located on the upper side of the movable metal plate 15.

[0030] By setting the through hole 17 on the upper side of the movable metal sheet 15, the upward movement stroke of the movable metal sheet 15 can be increased.

[0031] Specifically, a laser rangefinder 18 is fixedly installed on the bottom of the mounting plate 4.

[0032] Specifically, the laser rangefinder 18 and the connecting rod 3 are diagonally distributed.

[0033] like Figure 3 As shown, the laser rangefinder 18 is diagonally distributed with the connecting rod 3, so that the laser rangefinder 18 is located above the front side of the height restriction bar 1. The height of the vehicle can be detected by the laser rangefinder 18 before the vehicle touches the height restriction bar 1, so as to provide early warning.

[0034] The laser rangefinder 18 can use the SC-GP-TF4G wireless industrial laser rangefinder sensor. This model is based on TOF technology, with a measurement range of 0.1-50m and an accuracy of ±1mm. It supports 4G communication and is suitable for long-distance data transmission in industrial scenarios. It can also meet the requirements for accurate detection of vehicle height in bridge height restriction scenarios.

[0035] External electronic components of the laser rangefinder 18: Power module: Provides 12V DC or 220V AC power to ensure the power supply of the laser rangefinder, such as a power adapter with reverse connection protection and surge and lightning protection.

[0036] Wireless transmission module: such as a 4G module (in conjunction with the built-in SC-GP-TF4G module), to enable long-distance wireless transmission of data; if local storage is required, an external data storage module (such as a 24c02 storage chip) can be connected to cache measurement data.

[0037] Control and display module: It can be connected to an external microcontroller (such as STM32 series) as the main control unit to process the ranging data and control the data transmission logic; it can also be connected to an external LCD display to display the vehicle height measurement value locally in real time.

[0038] The laser rangefinder, through its built-in 4G wireless transmission module (such as the 4G module of the SC-GP-TF4G), encapsulates the measured vehicle height data according to communication protocols such as MQTT and TCP, and then sends it to the mobile network base station. The base station forwards the data to the Internet, and the traffic management center's server receives the data through the public network. After data parsing, the traffic management center's management system displays the vehicle height information in real time, thereby enabling early warning and overload monitoring. The entire process leverages the wide coverage and high stability of the 4G network to ensure the real-time and reliable transmission of data.

[0039] Specifically, a letter sticker 19 is fixedly installed on the front end of the side wall of the upright 2.

[0040] Specifically, sticker 19 is a fluorescent sticker.

[0041] Working principle: This solution replaces the traditional buzzer switch with a fixed metal plate and a movable metal plate, both of which are relatively high. When a vehicle hits the height limit bar, it will cause the movable metal plate to move upward and contact the fixed metal plate, triggering the buzzer alarm. If the vehicle continues to move the height limit bar upward, the movable metal plate will slide relative to the fixed metal plate, increasing the continuous closing range of the traditional switch and preventing damage.

[0042] It should be noted that the device structure and accompanying drawings of this patent mainly describe the principle of this patent. In terms of the technical aspects of this design principle, the setting of the device's power mechanism, power supply system and control system is not fully described. However, those skilled in the art who understand the principle of the above patent can clearly understand the specifics of its power mechanism, power supply system and control system.

[0043] In the description of this patent, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0044] Although embodiments of this patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this patent, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A collision alarm device for bridge height-limiting guardrails, characterized in that: It includes a height-limiting horizontal bar (1) and a vertical bar (2), wherein there are two vertical bars (2), which are located on the left and right sides of the height-limiting horizontal bar (1); A connecting rod (3) is fixedly installed at the top of the upright (2), a fixing plate (4) is fixedly installed at the top of the connecting rod (3), a buzzer (5) and a power supply (6) are fixedly installed at the bottom of the fixing plate (4), a sliding hole is provided at the top of the fixing plate (4), a sliding rod (7) is slidably installed on the inner side wall of the sliding hole, the bottom end of the sliding rod (7) is fixedly installed on the top side wall of the height limiting crossbar (1), a spring (8) is sleeved on the side wall of the sliding rod (7), the top end of the spring (8) is fixedly installed on the bottom of the fixing plate (4), and the bottom end of the spring (8) is fixedly installed on the top side wall of the height limiting crossbar (1); The inner side of the side wall of the upright (2) is provided with an installation groove (9), and a horizontal column (10) is fixedly installed on the inner side wall of the installation groove (9). An upright plate (11) is fixedly installed at the end of the horizontal column (10). A fixed metal plate (12) is fixedly installed at the upper inner side of the upright plate (11). A sliding groove (13) is provided at the lower inner side of the upright plate (11). A slider (14) is slidably installed in the sliding groove (13). A movable metal plate (15) is fixedly installed at the end of the slider (14). A connecting block (16) is fixedly installed at the bottom inner side of the movable metal plate (15). The inner end of the connecting block (16) is fixed to the end of the height-limiting horizontal bar (1). The fixed metal plate (12), buzzer (5), power supply (6) and movable metal plate (15) are connected in series by wires.

2. The bridge height restriction guardrail collision alarm device according to claim 1, characterized in that: The top wall of the mounting groove (9) is provided with a through hole (17), which is located on the upper side of the movable metal sheet (15).

3. The bridge height restriction guardrail collision alarm device according to claim 1, characterized in that: A laser rangefinder (18) is fixedly installed on the bottom of the fixed plate (4).

4. The bridge height restriction guardrail collision alarm device according to claim 3, characterized in that: The laser rangefinder (18) and the connecting rod (3) are diagonally distributed.

5. A bridge height restriction guardrail collision alarm device according to claim 1, characterized in that: A letter sticker (19) is fixedly installed on the front end of the side wall of the upright (2).

6. A bridge height restriction guard collision alarm device according to claim 5, characterized in that: The letter sticker (19) is a fluorescent sticker.

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