Audio-visual warning device for road surface defects and dangerous areas for road and bridge construction
By using a column-mounted audio-visual warning device, combined with AI recognition and photovoltaic self-powered power supply, the problem of traditional warning devices being unable to provide continuous warnings in complex environments has been solved. This enables all-weather active warnings and safe dispersal, improving the safety of road and bridge construction sites.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NORTHEAST FORESTRY UNIV
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional road and bridge construction warning devices cannot provide continuous 24-hour warnings in complex environments, which can easily lead to safety accidents. Furthermore, they have limited functionality and cannot actively disperse crowds.
The device is a pillar-mounted audio-visual warning system that incorporates AI recognition technology and is powered by photovoltaics. It provides audio-visual warnings through LED screens and speakers, and uses cameras for monitoring, achieving comprehensive proactive warnings.
It provides proactive warnings around the clock in complex environments, occupies a small area, has a wide monitoring range, can effectively drive away crowds, and improves the safety of construction sites.
Smart Images

Figure CN224148579U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road and bridge construction, and more specifically to an audiovisual warning device for road surface defects and dangerous areas used in road and bridge construction. Background Technology
[0002] With the rapid development of modern industry, it has also been widely applied in the field of road and bridge construction. For road defects or dangerous construction areas, traditional security measures involve installing reflective guardrails to provide warnings. However, for environments with large construction areas and complex terrain, traditional warnings cannot provide 24-hour reminders, which can easily lead to safety accidents.
[0003] For example, CN222715841U discloses a construction warning sign for civil engineering projects. This utility model discloses a construction warning sign for civil engineering projects, comprising: a support column; a support mechanism, the bottom of which is fixedly connected to the top of the support column; the support mechanism includes a support rod, a support sleeve, a U-shaped support plate, and a construction warning sign body; the support sleeve is movably fitted onto the top of the support rod; the U-shaped support plate is fixedly connected to the top of the support sleeve; and the construction warning sign body is fixedly connected to the top of the U-shaped support plate. This utility model utilizes a nut, screw, front plate, insert rod, first fixing plate, limit rod, support sleeve, U-shaped support plate, and construction warning sign body in conjunction. By removing the screw by pulling the nut backward, the front plate is pulled, causing the insert rod to move forward away from the first fixing plate. Then, by moving the support sleeve upward through the limit rod, the U-shaped support plate and construction warning sign body move accordingly for disassembly, improving the practicality of the construction warning sign. The structure of this device is common in the field, and many similar devices are available on the market, with relatively simple warning functions.
[0004] For example, CN222730406U describes a remote warning device for construction sites. This utility model provides a remote warning device for construction sites, relating to the field of track construction warning technology. It includes: a support pole; a warning light installed on the top of the support pole; a light-shielding cover connected to the top of the support pole, which is fitted over the warning light; a convex lens installed in a circumferential shape around the outside of the light-shielding cover; a drive motor fixedly installed near the top of the support pole, connected to the light-shielding cover; a folding rod connected to the middle of the support pole; and bolts connected to the outside of the support pole. The red light generated by the warning light is emitted outward through a light-transmitting hole. The convex lens focuses the red light, allowing it to illuminate a farther location. The drive motor drives the light-shielding cover to rotate at a constant speed, changing the orientation of the light-transmitting hole, achieving 360-degree circumferential illumination. Simultaneously, the red light flashes, maintaining its visibility at a distance and improving the long-distance warning effect, thus ensuring the safety of urban track construction. The warning device described in this utility model has a relatively simple function. In special environments, it needs to be combined with audiovisual technology to drive away crowds. Therefore, the device needs to be improved and expanded by combining modern technology to adapt to more operating environments. Summary of the Invention
[0005] The purpose of this invention is to provide an audio-visual warning device for road surface defects and dangerous areas in road and bridge construction. It is installed on the ground in a column-type manner, has a small footprint, a wide monitoring range, and is equipped with photovoltaic self-powered function. Combined with existing AI recognition technology, it provides audio-visual warnings and drives away organisms that appear in dangerous areas. Compared with traditional static warning signs, this device is more proactive.
[0006] The objective of this utility model is achieved through the following technical solution:
[0007] An audiovisual warning device for road surface defects and dangerous areas used in road and bridge construction is characterized by comprising a column mechanism and a warning mechanism, wherein the column mechanism and the warning mechanism are connected.
[0008] As a further optimization of this technical solution, this utility model provides an audiovisual warning device for road surface defects and dangerous areas in road and bridge construction. The column mechanism includes a pole, a motor, and a coupling, wherein the pole is fixedly connected to the motor, and the output shaft of the motor is fixedly connected to the coupling.
[0009] As a further optimization of this technical solution, this utility model provides an audiovisual warning device for road surface defects and dangerous areas in road and bridge construction. The warning mechanism includes a bearing A, an outer cover plate, a bearing B, a shaft A, a ratchet A, a bevel gear A, a torsion spring A, a pawl A, a ratchet B, a bevel gear B, a torsion spring B, a pawl B, a bevel gear C, a shaft B, a flange, an LED screen, a top bracket, a speaker A, a speaker B, a camera A, a camera B, a wing bolt A, a wing bolt B, a bracket A, and a photovoltaic panel. The bearing A is fixedly connected to the outer cover plate, the outer cover plate is fixedly connected to the bearing B, the bearing B is fixedly connected to the shaft A, and the ratchet A, bevel gear A, ratchet B, bevel gear B, and top bracket are all fixedly connected to the shaft A. Connect the following: Shaft A is rotatably connected to Shaft Seat A; Ratchet A is fixedly connected to Bevel Gear A; Ratchet A is meshed with Pad A; Torsion Spring A is rotatably connected to Pad A; Bevel Gear A is fixedly connected to Torsion Spring A; Ratchet B is fixedly connected to Bevel Gear B; Torsion Spring B is rotatably connected to Pad B; Bevel Gear B is fixedly connected to Torsion Spring B; Pad B is meshed with Ratchet B; Bevel Gear C is meshed with Bevel Gear A and Bevel Gear B; Shaft B is fixedly connected to Bevel Gear C and Flange; Flange is fixedly connected to LED Screen; Top Bracket is fixedly connected to Speaker A, Speaker B, Camera A, and Camera B; Top Bracket is fixedly connected to Bracket A via Wing Bolt A and Wing Bolt B; Bracket A is fixedly connected to Photovoltaic Panel.
[0010] This utility model discloses an audio-visual warning device for road surface defects and dangerous areas used in road and bridge construction. Its beneficial effects are: 1. It is installed on the ground in a column-type manner, occupying a small area, with a wide monitoring range, and has a photovoltaic self-powered function; 2. It combines existing AI recognition technology to provide audio-visual warnings and drive away organisms appearing in dangerous areas. Compared with traditional static warning signs, this device is more proactive. Attached Figure Description
[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;
[0013] Figure 2 This is a schematic diagram of the column mechanism of this utility model. Figure 1 ;
[0014] Figure 3 This is a schematic diagram of the warning mechanism structure of this utility model. Figure 1 ;
[0015] Figure 4 This is a schematic diagram of the warning mechanism structure of this utility model. Figure 2 ;
[0016] Figure 5 This is a schematic diagram of the warning mechanism structure of this utility model. Figure 3 ;
[0017] Figure 6 This is a schematic diagram of the warning mechanism structure of this utility model. Figure 4 ;
[0018] In the diagram: Column mechanism 1; Upright 101; Motor 102; Coupling 103; Warning mechanism 2; Shaft seat A201; Outer cover plate 202; Shaft seat B203; Shaft A204; Ratchet A205; Bevel gear A206; Torsion spring A207; Pawl A208; Ratchet B209; Bevel gear B210; Torsion spring B211; Pawl B212; Bevel gear C213; Shaft B214; Flange 215; LED screen 216; Top bracket 217; Speaker A218; Speaker B219; Camera A220; Camera B221; Wing bolt A222; Wing bolt B223; Bracket A224; Photovoltaic panel 225. Specific Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings.
[0020] The fixed connection mentioned in this device refers to fixing by means of welding, thread fixing, etc. Different fixing methods are used according to different usage environments. The rotating connection refers to fixing the bearing on the shaft by mounting the bearing on the shaft or shaft hole, and setting the spring retaining ring groove on the shaft or shaft hole. The bearing is axially fixed by locking the elastic retaining ring in the retaining ring groove, so as to realize rotation, or meshing rotation between gears. Specific Implementation Example 1:
[0022] The following is combined Figure 1-6 This embodiment describes an audiovisual warning device for road surface defects and dangerous areas used in road and bridge construction, comprising a column mechanism 1 and a warning mechanism 2, wherein the column mechanism 1 and the warning mechanism 2 are connected. Specific Implementation Example 2:
[0024] The following is combined Figure 1-6 This embodiment further describes Example 1. The column mechanism 1 includes a column 101, a motor 102, and a coupling 103. The column 101 is fixedly connected to the motor 102, and the output shaft of the motor 102 is fixedly connected to the coupling 103. Specific Implementation Example 3:
[0026] The following is combined Figure 1-6This embodiment further describes Example 1. The warning mechanism 2 includes a shaft seat A201, an outer cover plate 202, a shaft seat B203, a shaft A204, a ratchet A205, a bevel gear A206, a torsion spring A207, a pawl A208, a ratchet B209, a bevel gear B210, a torsion spring B211, a pawl B212, a bevel gear C213, a shaft B214, a flange 215, an LED screen 216, a top bracket 217, and a speaker A218. The components include a speaker (B219), a camera (A220), a camera (B221), a wing bolt (A222), a wing bolt (B223), a bracket (A224), and a photovoltaic panel (225). A saddle A201 is fixedly connected to an outer cover plate (202), the outer cover plate (202) is fixedly connected to a saddle B203, and the saddle B203 is fixedly connected to a shaft (A204). A ratchet (A205), a bevel gear (A206), a ratchet (B209), a bevel gear (B210), and a top bracket (217) are all fixedly connected to a shaft (A204). The shaft (A204) is also fixedly connected to the saddle. A201 is rotatably connected; ratchet A205 is fixedly connected to bevel gear A206; ratchet A205 is engaged with pawl A208; torsion spring A207 is rotatably connected to pawl A208; bevel gear A206 is fixedly connected to torsion spring A207; ratchet B209 is fixedly connected to bevel gear B210; torsion spring B211 is rotatably connected to pawl B212; bevel gear B210 is fixedly connected to torsion spring B211; pawl B212 is engaged with ratchet B209; bevel gear... Wheel C213 meshes with bevel gears A206 and B210. Shaft B214 is fixedly connected to bevel gear C213 and flange 215. Flange 215 is fixedly connected to LED screen 216. Top bracket 217 is fixedly connected to speakers A218 and B219, camera A220 and camera B221. Top bracket 217 is fixedly connected to bracket A224 via wing bolts A222 and B223. Bracket A224 is fixedly connected to photovoltaic panel 225.
[0027] This utility model discloses an audiovisual warning device for road surface defects and dangerous areas in road and bridge construction. Its advantages are as follows: the device is installed on the ground using a column-type structure. The column mechanism 1 is fixed to the ground by drilling and expansion bolts, positioning the warning mechanism 2 in mid-air. This results in a small footprint and a wide monitoring range. The photovoltaic panel 225 in the warning mechanism 2 collects light energy and converts it into electricity. When the device starts working, the motor 102 is started, and its output shaft rotates, driving the warning mechanism 2 through the coupling 103. When the warning mechanism 2 rotates, it rotates along the upright 101 via the shaft seat B203. This rotation of the warning mechanism 2 drives the LED screen 216 to rotate, displaying slogans or warning patterns to alert people at a distance. When the shaft A204 rotates, it drives the ratchet A205, bevel gear A206, ratchet B209, and bevel gear B210 to rotate simultaneously. When ratchet A205 rotates, it drives the torsion spring A207 to rotate via the pawl A208. When ratchet B209 rotates, it drives the torsion spring B212 via the pawl B212. When B211 rotates, pawls A208 and B212 restrict shaft A204 to rotate only in one direction. This is to prevent external environmental factors in windy weather from causing the warning mechanism 2 to reverse, twisting the motor output shaft, and causing malfunction of its mechanism. When bevel gears A206 and B210 rotate, they simultaneously drive bevel gear C213 to rotate. Bevel gear C213 drives flange 215 to rotate via shaft B214. Flange 215 then drives LED screen 216 to rotate. When LED screen 216 rotates, it displays a glaring warning light. The colored or warning signs rotate continuously to attract the attention of people around the danger zone. At the same time, axis A204 also drives the top bracket 217 to rotate. The top bracket 217 synchronously drives cameras A220 and B221 to rotate as well. When cameras A220 and B221 rotate, they perform a 360-degree panoramic detection of the area around the danger zone. If someone is detected about to enter the danger zone, speakers A218 and B219 will be turned on simultaneously to emit sound, which, together with the LED screen 216, informs and drives away the crowd of danger.
[0028] Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples mentioned above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model are also within the protection scope of this utility model.
Claims
1. A visual and auditory warning device for road surface defects and hazardous areas used in road and bridge construction, characterized in that: It includes a column mechanism (1) and a warning mechanism (2), and the column mechanism (1) and the warning mechanism (2) are connected; The column mechanism (1) includes a column (101), a motor (102), and a coupling (103), wherein the column (101) is fixedly connected to the motor (102), and the output shaft of the motor (102) is fixedly connected to the coupling (103); The warning mechanism (2) includes a bearing A (201), an outer cover plate (202), a bearing B (203), a shaft A (204), a ratchet A (205), a bevel gear A (206), a torsion spring A (207), a pawl A (208), a ratchet B (209), a bevel gear B (210), a torsion spring B (211), a pawl B (212), a bevel gear C (213), a shaft B (214), a flange (215), an LED screen (216), a top bracket (217), a speaker A (218), a speaker B (219), and a camera A (220). Camera B (221), wing bolt A (222), wing bolt B (223), bracket A (224), photovoltaic panel (225), wherein, bearing A (201) is fixedly connected to outer cover plate (202), outer cover plate (202) is fixedly connected to bearing B (203), bearing B (203) is fixedly connected to shaft A (204), ratchet A (205), bevel gear A (206), ratchet B (209), bevel gear B (210), and top bracket (217) are all fixedly connected to shaft A (204), and shaft A (204) is rotatably connected to bearing A (201). Connecting ratchet A (205) and bevel gear A (206), ratchet A (205) and pawl A (208) are engaged, torsion spring A (207) and pawl A (208) are rotatably connected, bevel gear A (206) and torsion spring A (207) are fixedly connected, ratchet B (209) and bevel gear B (210) are fixedly connected, torsion spring B (211) and pawl B (212) are rotatably connected, bevel gear B (210) and torsion spring B (211) are fixedly connected, pawl B (212) and ratchet B (209) are engaged, and bevel gear C (213) is engaged. It meshes with bevel gear A (206) and bevel gear B (210), shaft B (214) is fixedly connected to bevel gear C (213) and flange (215), flange (215) is fixedly connected to LED screen (216), top bracket (217) is fixedly connected to speaker A (218), speaker B (219), camera A (220) and camera B (221), top bracket (217) is fixedly connected to bracket A (224) through wing bolt A (222) and wing bolt B (223), bracket A (224) is fixedly connected to photovoltaic panel (225).
Citation Information
Patent Citations
Civil engineering construction warning sign
CN222715841U
A remote warning device for construction sites
CN222730406U