Anti-collision vehicle alarm device and alarm method

Abstract

This application discloses an alarm device and alarm method for a collision avoidance vehicle. The alarm device includes a collision avoidance vehicle body, a collision avoidance buffer device, a first-level warning device, a second-level warning device, and a third-level warning device. The first-level warning device includes a radar mechanism and an audible warning mechanism. The second-level warning device includes a warning support frame, a pressure sensor, a flashing warning mechanism, and a vibration warning mechanism. The third-level warning device includes an impact sensor and a buffer folding support mechanism. In the alarm method, the radar mechanism is used to trigger the audible warning mechanism to provide an audible alert. The pressure sensor is used to trigger the flashing warning mechanism to emit a strong flashing light warning, and simultaneously triggers the vibration warning mechanism to emit a mechanical vibration alert. The impact sensor is used to trigger the buffer folding support mechanism to unfold to enhance the structural strength of the collision avoidance buffer device, forming a three-level active protection system. This achieves a dynamic response of "long-distance warning - contact warning - collision buffer," improving the timeliness and stability of the warning.

Description

Technical Field

[0001] This application relates to the technical field of collision avoidance alarm devices, and in particular to a collision avoidance alarm device and alarm method. Background Technology

[0002] As an important traffic safety facility widely used in road construction, accident handling, and other scenarios, crash avoidance vehicles effectively ensure traffic safety by providing collision buffers for workers and vehicles. In recent years, with the acceleration of urbanization and the surge in traffic flow, the functional and safety requirements of crash avoidance vehicles have significantly increased. However, in existing technologies, the warning systems of crash avoidance vehicles mostly adopt a single warning mode, relying solely on onboard radar, cameras, and other equipment to monitor the environment and send warnings to the driver when potential hazards are identified. This independently operating warning mechanism has obvious limitations when dealing with complex traffic environments: it not only lacks multi-dimensional perception coordination, making it difficult to capture rapidly changing road risks in a timely manner, but also, in special working conditions such as collisions on inclined road surfaces, the monitoring blind spots of a single sensor can easily lead to warning delays, resulting in a decrease in the overall protective performance of the crash avoidance vehicle and making it difficult to meet safety protection requirements. Summary of the Invention

[0003] To address the shortcomings of existing collision avoidance vehicle warning systems, which often employ a single warning mode and lack multi-dimensional perception and coordination, making it difficult to meet safety protection requirements, this application provides an alarm device and alarm method for collision avoidance vehicles.

[0004] The alarm device and alarm method for a collision avoidance vehicle provided in this application adopt the following technical solution:

[0005] An alarm device for a crash avoidance vehicle includes a crash avoidance vehicle body, a crash avoidance buffer device connected to the rear end of the crash avoidance vehicle body, a first-level warning device, a second-level warning device, and a third-level warning device connected to the crash avoidance buffer device.

[0006] The primary warning device includes a radar mechanism connected to the rear end of the anti-collision buffer device, and an audible warning mechanism connected to the front end of the anti-collision buffer device.

[0007] The secondary warning device includes a warning support frame connected to the tail end of the anti-collision buffer device and extending in a direction away from the anti-collision buffer device, a pressure sensor connected to the warning support frame, a flashing warning mechanism connected to the warning support frame and electrically connected to the pressure sensor, and a vibration warning mechanism connected to the warning support frame and electrically connected to the pressure sensor.

[0008] The three-level early warning device includes an impact sensor connected to the tail end of the anti-collision buffer device, and a buffer folding support mechanism inserted into the anti-collision buffer device and electrically connected to the impact sensor.

[0009] By adopting the above technical solution, when the radar mechanism detects a vehicle approaching from behind, it triggers the sound warning mechanism to provide an audible alert, thus achieving a first-level warning. If the vehicle continues to approach and touches the warning support frame, the pressure sensor triggers the flashing warning mechanism to emit a strong flashing light warning, and simultaneously triggers the vibration warning mechanism to emit a mechanical vibration reminder, thus achieving a second-level warning. When the collision impact force reaches a preset threshold, the impact sensor triggers the buffer folding support mechanism to unfold to enhance the structural strength of the anti-collision buffer device, forming a third-level active protection.

[0010] This application achieves a dynamic response of "long-distance early warning - contact warning - collision buffering", improving the timeliness and stability of early warning; the extended design of the early warning support frame expands the detection range of the pressure sensor, and combined with the tactile feedback of the vibration early warning mechanism, it effectively covers collision scenarios on inclined road surfaces; the buffer folding support mechanism unfolds quickly after the impact sensor is triggered, forming an energy-absorbing structure and reducing the deformation risk of the crash vehicle body; this application improves the active safety and impact resistance of the crash vehicle in complex traffic environments through a multi-modal protection mechanism of sound, light, vibration and mechanical buffering.

[0011] Preferably, the warning support frame includes a first extended support frame located on one side of the anti-collision buffer device, a second extended support frame located on the other side of the anti-collision buffer device and arranged parallel to the first extended support frame, and a vibration support frame arranged in an array between the first extended support frame and the second extended support frame and arranged in a direction away from the anti-collision buffer device, and the vibration warning mechanism is disposed on the vibration support frame.

[0012] By adopting the above technical solution, the warning support frame forms a symmetrical support structure by having the first and second extended support frames distributed parallel to each other on both sides of the anti-collision buffer device. When a vehicle approaches, the extended layout expands the collision contact monitoring range. When a vehicle behind presses on the vibration support frame, the pressure sensor is triggered to generate an electrical signal, which synchronously drives the vibration warning mechanism to generate high-frequency mechanical vibration along the vibration support frame, forming a tactile alarm. This allows the mechanical vibration signal to be directly transmitted to the vehicle, enhancing the warning penetration. At the same time, the arrayed vibration support frame disperses impact energy through multiple nodes, reducing local stress concentration.

[0013] This application expands the collision contact monitoring area through the coordinated layout of the first and second extended support frames on both sides and the array-type vibration support frame. At the same time, it uses a multi-level support structure to achieve pressure dispersion and accurate sensing. Combined with the distributed arrangement of the vibration warning mechanism on the vibration support frame, it enhances the intensity of tactile warning, especially for collision scenarios on inclined roads, ensuring the reliability and sensitivity of the secondary warning system under complex impacts.

[0014] Preferably, the vibration support frame includes a support frame body, a warning detection slope provided on the support frame body, and a warning vibration plane provided on the support frame body and located on one side of the warning detection slope; the pressure sensor is connected to the warning detection slope, the vibration warning mechanism is provided on the warning vibration plane and electrically connected to the pressure sensor, the warning vibration plane is provided with a vibration fixing hole provided along the length direction of the support frame body, and the vibration warning mechanism is inserted into the vibration fixing hole.

[0015] By adopting the above technical solution, when a vehicle comes into contact with the warning detection slope, the pressure sensor detects the pressure signal in real time and triggers the vibration warning mechanism to start. The vibration warning mechanism generates high-frequency mechanical vibration through the vibration fixing holes on the warning vibration plane and transmits tactile warning to the car's cabin through the car tires. The slope design of the warning detection slope in this application is used to guide the collision force to be dispersed along the slope direction, reducing the local stress concentration of the support frame body. The vibration warning mechanism is embedded in the warning vibration plane through the vibration fixing holes to ensure that the vibration energy is uniformly transmitted along the length of the support frame body, preventing the vibration warning mechanism from falling off or shifting. The physical isolation design of the warning detection slope (pressure sensing) and the warning vibration slope (tactile feedback) realizes the coordinated operation of collision detection and warning response, shortening the signal transmission delay. The array arrangement of the vibration fixing holes optimizes the vibration wave transmission path, expanding the tactile warning coverage area to the full length of the support frame body, improving the warning recognition rate in car collision scenarios.

[0016] Preferably, both the first extension support frame and the second extension support frame include an extension support body and an inclined guide slope provided at the end of the extension support body.

[0017] The extension bracket body is provided with flashing fixing slots arranged in an array along the length direction of the extension bracket body, and the extension bracket body is also provided with a flashing warning slope located in the flashing fixing slots; the flashing warning mechanism is located on the flashing warning slope and is electrically connected to the pressure sensor.

[0018] By adopting the above technical solution, when a car comes into contact with the warning detection slope, the pressure sensor triggers the flashing warning mechanism to project a strong light warning at an angle facing the car's cab onto the flashing warning slope; the inclined guide slope converts the collision impact force into a component force along the axial direction of the extension bracket body through its inclined structure, reducing the risk of damage to the extension bracket body from the impact; the array of flashing fixing slots allows the flashing warning mechanism to be evenly arranged along the length of the extension bracket body, and in conjunction with the inclined reflective surface design of the flashing warning slope, it achieves light signal coverage of the car's cab, improving the effect of the flashing warning.

[0019] Preferably, the anti-collision buffer device includes an anti-collision bag housing connected to the rear end of the anti-collision vehicle body, and an anti-collision buffer bag inserted into the anti-collision bag housing;

[0020] The impact sensor is connected to the anti-collision pack housing and is located between the secondary warning device and the anti-collision buffer pack; the buffer folding support mechanism is inserted into the anti-collision pack housing and is located between the anti-collision vehicle body and the anti-collision buffer pack.

[0021] By adopting the above technical solution, when a car collides with the crash barrier housing, the impact sensor detects the deformation pressure of the crash barrier housing in real time and triggers the buffer folding support mechanism to unfold towards the crash barrier body for multi-stage energy absorption. The impact sensor is located between the secondary warning device and the crash barrier buffer, which can accurately distinguish between the contact pressure in the warning stage and the impact load in the collision stage, avoiding false triggering of the buffer folding support mechanism. After the impact sensor is triggered, the buffer folding support mechanism unfolds in a direction away from the crash barrier body, dynamically reinforcing the buffer support force. The coordinated deformation of the folding support mechanism and the crash barrier buffer forms a gradient energy absorption path, so that the collision energy is dissipated step by step through the deformation of the crash barrier housing, the unfolding resistance of the folding mechanism, and the plastic deformation of the crash barrier buffer, maximizing the extension of the collision deceleration time.

[0022] Preferably, the buffer folding support mechanism includes buffer support seats connected to the two side walls of the anti-collision bag housing, a hinged buffer frame connected to the anti-collision bag housing and located between the two buffer support seats, and a buffer drive assembly connected to the buffer support seats and used to drive the hinged buffer frame to unfold or fold; the buffer drive assembly and the impact sensor are electrically connected.

[0023] By adopting the above technical solution, when the impact sensor detects the collision impact force, it triggers the buffer drive component. The buffer drive component drives the hinged buffer frame to unfold from the folded state away from the buffer support seats on both sides, forming a support structure. The buffer support seats are symmetrically distributed on both sides of the anti-collision bag shell. Through the rigid connection with the anti-collision bag shell, the overall torsional stiffness of the buffer drive component after unfolding is improved. The hinged buffer frame forms a gradient energy absorption buffer by acting in the opposite direction to the collision impact force through multi-segment dynamic unfolding resistance, which improves the early warning linkage and buffering effect.

[0024] Preferably, the hinged buffer frame includes a hinged support rod fixedly connected to the upper and lower side walls of the anti-collision bag housing, a first hinge rod sleeved on the outer side wall of the hinged support rod and rotatably connected to the hinged support rod, and a second hinge rod sleeved on the outer side wall of the hinged support rod and rotatably connected to the hinged support rod; the first hinge rod and the second hinge rod are arranged crosswise and stacked sequentially along the length direction of the hinged support rod.

[0025] By adopting the above technical solution, when the buffer drive component is activated, the first hinge rod and the second hinge rod rotate and unfold synchronously around the hinge support rod; the hinge support rod is symmetrically fixed to the upper and lower side walls of the anti-collision pack shell, ensuring that the first hinge rod and the second hinge rod are subjected to uniform force when unfolded, avoiding structural instability caused by unilateral deflection; the cross-stacked first hinge rod and the second hinge rod form an "X"-shaped multi-directional support node after unfolding, which improves the bending strength of the structure through the mutual constraint between the rods; in the folded state, the first hinge rod and the second hinge rod are close to the hinge support rod, saving internal space of the anti-collision pack shell; after unfolding, the multi-node bracket and the anti-collision buffer pack together form a composite energy absorption path, improving the buffer performance.

[0026] Preferably, both the first hinge rod and the second hinge rod include a hinge rod body, a fixed connecting plate disposed near one end of the crash barrier body and connected to the plurality of hinge rod bodies, and a buffer support baffle disposed at the other end of the crash barrier body and fixedly connected to the plurality of hinge rod bodies.

[0027] By adopting the above technical solution, when the articulated rod body rotates and unfolds around the articulated support rod, the fixed connecting plate locks multiple articulated rod bodies into a unified synchronous movement. The buffer support baffle abuts against the surface of the impacting vehicle as it unfolds, forming distributed support. The fixed connecting plate enhances the overall rigidity of the articulated rod group through a multi-rod parallel structure, preventing stress concentration caused by asynchronous unfolding of individual articulated rod bodies. The large-area planar design of the buffer support baffle forms surface contact with the impacting vehicle after unfolding, dispersing the impact load through friction and support reaction force, reducing the risk of bending deformation of the articulated rod body. The articulated rod body, constrained at both ends by the fixed connecting plate and the buffer support baffle, forms a two-way compression-resistant support structure after unfolding, improving bending strength. In the folded state, the buffer support baffle is close to the fixed connecting plate, compressing the storage space and ensuring the miniaturization and rapid response characteristics of the anti-collision buffer device.

[0028] Preferably, the buffer drive assembly includes a drive component body connected to the buffer support base, and a guide push-pull rod connected to the output end of the drive component body and movably inserted into the hinge rod body; the two hinge rod bodies near the drive component body are respectively provided with push-pull sliding grooves, the push-pull sliding grooves are arranged along the length direction of the hinge rod body, and the two ends of the guide push-pull rod are respectively movably inserted into the two push-pull sliding grooves.

[0029] By adopting the above technical solution, when the impact sensor triggers the start of the drive component body, the guide push-pull rod slides linearly along the push-pull sliding groove within the hinge rod body, pushing the hinge rods on both sides to simultaneously unfold to the locked position of the support. The linear guide design of the push-pull sliding groove restricts the movement trajectory of the guide push-pull rod, ensuring that the unfolding angle of multiple hinge rod bodies is consistent, and avoiding structural jamming due to differences in deflection angles. The guide push-pull rod is embedded at both ends in the push-pull sliding groove to form a double-sided force transmission path, so that the output thrust of the drive component body is evenly distributed to the hinge rod bodies on both sides, improving the unfolding speed and force transmission efficiency. The rigid connection structure between the drive component body and the buffer support seat disperses the driving reaction force to the anti-collision housing through the support seat, reducing the risk of wear caused by the vibration of the buffer drive component itself.

[0030] Preferably, a method for issuing a collision avoidance warning device includes the following steps:

[0031] S1: When the vehicle reaches the preset distance detected by the radar mechanism, the radar mechanism triggers the sound warning mechanism to issue a sound alarm for a first-level warning;

[0032] S2: When the vehicle continues to move closer to the crash barrier body, the pressure sensor is pressed down, triggering the flashing warning mechanism to emit a high-frequency flash in front of the vehicle. The pressure sensor simultaneously triggers the vibration warning mechanism to emit a high-frequency vibration for a secondary warning.

[0033] S3: When a vehicle collides with the impact sensor on the anti-collision buffer device, the impact sensor triggers the buffer folding support mechanism to unfold in a direction away from the anti-collision vehicle body to provide a three-level warning.

[0034] By adopting the above technical solution, the radar mechanism detects vehicles behind at a preset distance and triggers the sound warning mechanism to emit high-frequency sound wave warnings. When the vehicle continues to approach and contact the warning support frame, the pressure sensor is pressed and triggers the flash warning mechanism to project high-frequency strong light, simultaneously activating the vibration warning mechanism to generate mechanical vibration, forming a multi-modal warning of sound, light, and touch. When the vehicle hits the anti-collision buffer device, the impact sensor detects the impact force preset threshold in real time and drives the buffer folding support mechanism to unfold and form a rigid support frame, simultaneously compressing the anti-collision buffer bag to absorb energy. This application constructs a three-level response logic of "remote warning - contact warning - active buffering". Through the signal triggering of the radar mechanism, pressure sensor, and impact sensor, the warning response time is shortened. The pressure sensor outputs dual signals synchronously with the vibration warning mechanism and the flash warning mechanism, solving the risk of warning failure in rainy or foggy environments or when the driver is distracted. The design of the buffer folding support mechanism unfolding away from the vehicle body offsets the collision kinetic energy through the unfolding reaction force, and the remaining energy is dissipated step by step by the plastic deformation of the anti-collision buffer bag. The dynamic coordination of multi-level warning signals and mechanical buffering actions improves the protective effectiveness.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. A collision avoidance vehicle alarm device, wherein when the radar mechanism detects a vehicle approaching from behind, it triggers an audible warning mechanism to provide an audible alert, thereby achieving a first-level warning; if the vehicle continues to approach and contacts the warning support frame, a pressure sensor triggers a flashing warning mechanism to emit a bright flashing warning, and simultaneously triggers a vibration warning mechanism to emit a mechanical vibration alert, thereby achieving a second-level warning; when the collision impact force reaches a preset threshold, an impact sensor triggers a buffer folding support mechanism to unfold to enhance the structural strength of the collision avoidance buffer device, forming a third-level active protection;

[0037] This application achieves a dynamic response of "long-distance early warning - contact warning - collision buffering", improving the timeliness and stability of early warning; the extended design of the early warning support frame expands the detection range of the pressure sensor, and combined with the tactile feedback of the vibration early warning mechanism, it effectively covers collision scenarios on inclined road surfaces; the buffer folding support mechanism quickly unfolds after the impact sensor is triggered, forming an energy-absorbing structure and reducing the deformation risk of the crash vehicle body; this application improves the active safety and impact resistance of the crash vehicle in complex traffic environments through a multi-modal protection mechanism of sound, light, vibration and mechanical buffering.

[0038] 2. An alarm device for a crash-proof vehicle, wherein when a vehicle collides with the shell of a crash-proof bag, an impact sensor detects the deformation pressure of the shell in real time and triggers a buffer folding support mechanism to unfold towards the crash-proof vehicle body for multi-stage energy absorption; the impact sensor is located between the secondary warning device and the crash-proof buffer bag, and can accurately distinguish between the contact pressure in the warning stage and the impact load in the collision stage, avoiding false triggering of the buffer folding support mechanism; after being triggered by the impact sensor, the buffer folding support mechanism unfolds in a direction away from the crash-proof vehicle body, dynamically reinforcing the buffer support force; the coordinated deformation of the folding support mechanism and the crash-proof buffer bag forms a gradient energy absorption path, so that the collision energy is dissipated step by step through the deformation of the crash-proof bag shell, the unfolding resistance of the folding mechanism, and the plastic deformation of the crash-proof buffer bag, maximizing the extension of the collision deceleration time;

[0039] 3. A method for alarming a collision avoidance vehicle, wherein a radar mechanism detects a vehicle behind at a preset distance and triggers an audible warning mechanism to emit a high-frequency sound wave warning; when the vehicle continues to approach and contact the warning support frame, a pressure sensor is pressed to trigger a flashing warning mechanism to project a high-frequency strong light and simultaneously activate a vibration warning mechanism to generate mechanical vibration, forming a multi-modal warning of sound, light, and touch; when the vehicle collides with the collision avoidance buffer device, an impact sensor detects a preset threshold of impact force in real time and drives the buffer folding support mechanism to unfold and form a rigid support frame, simultaneously compressing the collision avoidance buffer bag to absorb energy; this application constructs a three-level response logic of "remote warning - contact warning - active buffering", which shortens the warning response time through signal triggering by the radar mechanism, pressure sensor, and impact sensor; the pressure sensor outputs dual signals synchronously with the vibration warning mechanism and the flashing warning mechanism, solving the risk of warning failure in rainy or foggy environments or when the driver is distracted; the design of the buffer folding support mechanism unfolding in a direction away from the vehicle body offsets the collision kinetic energy through unfolding reaction force, and the remaining energy is dissipated step by step by the plastic deformation of the collision avoidance buffer bag; the dynamic coordination of multi-level warning signals and mechanical buffering actions improves the protective effectiveness. Attached Figure Description

[0040] Figure 1 This is an exploded structural diagram of an embodiment of an alarm device for a collision avoidance vehicle according to this application.

[0041] Figure 2 This is a three-dimensional structural schematic diagram of a two-level warning device and a three-level warning device of an alarm device for a collision avoidance vehicle according to the present application.

[0042] Figure 3 This is a three-dimensional structural schematic diagram of a warning support frame according to an embodiment of an alarm device for a collision avoidance vehicle.

[0043] Figure 4 This is a top view schematic diagram of the buffer folding support mechanism of an embodiment of an alarm device for a collision avoidance vehicle according to this application.

[0044] Figure 5 This is a cross-sectional view of the buffer folding support mechanism of an embodiment of an alarm device for a collision avoidance vehicle according to this application. Figure 1 .

[0045] Figure 6 This is a cross-sectional view of the buffer folding support mechanism of an embodiment of an alarm device for a collision avoidance vehicle according to this application. Figure 2 .

[0046] Figure 7 This is a flowchart illustrating the steps of an embodiment of an alarm method for a collision avoidance vehicle according to this application.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Crash protection vehicle body; 2. Crash protection buffer device; 21. Crash protection bag shell; 22. Crash protection buffer bag; 3. First-level warning device; 31. Radar mechanism; 32. Sound warning mechanism;

[0049] 4. Secondary early warning device; 41. Early warning support frame; 42. Pressure sensor; 43. Flashing early warning mechanism; 44. Vibration early warning mechanism; 411. First extension support frame; 412. Second extension support frame; 413. Vibration support frame; 4111. Extension support body; 4112. Inclined guide slope; 4113. Flashing fixing groove; 4114. Flashing early warning slope; 4131. Support frame body; 4132. Early warning detection slope; 4133. Early warning vibration plane; 4134. Vibration fixing hole;

[0050] 5. Three-level early warning device; 51. Impact sensor; 52. Buffer folding support mechanism; 521. Buffer support seat; 522. Hinge buffer frame; 523. Buffer drive assembly; 524. Elastic buffer component; 5221. Hinge support rod; 5222. First hinge rod; 5223. Second hinge rod; 5224. Hinge rod body; 5225. Fixed connecting plate; 5226. Buffer support baffle; 5231. Drive component body; 5232. Guide push-pull rod; 5233. Push-pull sliding groove. Detailed Implementation

[0051] The following is combined with Figures 1 to 7 This application is described in further detail.

[0052] This application discloses an alarm device and alarm method for a collision avoidance vehicle. (Refer to...) Figure 1 An alarm device for a crash avoidance vehicle includes a crash avoidance vehicle body 1, a crash avoidance buffer device 2 connected to the rear end of the crash avoidance vehicle body 1, a first-level warning device 3 connected to the crash avoidance buffer device 2, a second-level warning device 4, and a third-level warning device 5.

[0053] The first-level early warning device 3 includes a radar mechanism 31 connected to the tail end of the anti-collision buffer device 2, and an audible early warning mechanism 32 connected to the head end of the anti-collision buffer device 2.

[0054] The secondary warning device 4 includes a warning support frame 41 connected to the tail end of the anti-collision buffer device 2 and extending in a direction away from the anti-collision buffer device 2, a pressure sensor 42 connected to the warning support frame 41, a flashing warning mechanism 43 connected to the warning support frame 41 and electrically connected to the pressure sensor 42, and a vibration warning mechanism 44 connected to the warning support frame 41 and electrically connected to the pressure sensor 42.

[0055] The Level 3 warning device 5 includes an impact sensor 51 connected to the tail end of the anti-collision buffer device 2, and a buffer folding support mechanism 52 inserted into the anti-collision buffer device 2 and electrically connected to the impact sensor 51.

[0056] When the radar mechanism 31 detects a vehicle approaching from behind, it triggers the sound warning mechanism 32 to provide an audible alert, thus achieving a first-level warning. If the vehicle continues to approach and touches the warning support frame 41, the pressure sensor 42 triggers the flashing warning mechanism 43 to emit a strong flashing warning, and simultaneously triggers the vibration warning mechanism 44 to emit a mechanical vibration reminder, thus achieving a second-level warning. When the collision impact force reaches a preset threshold, the impact sensor 51 triggers the buffer folding support mechanism 52 to unfold, thereby enhancing the structural strength of the anti-collision buffer device 2 and forming a third-level active protection.

[0057] This application achieves a dynamic response of "long-range early warning - contact warning - collision buffer" through the three-level coordination of radar mechanism 31, pressure sensor 42 and impact sensor 51, improving the timeliness and stability of early warning; the extended design of the early warning support frame 41 expands the detection range of pressure sensor 42, and combined with the tactile feedback of vibration early warning mechanism 44, effectively covers collision scenarios on inclined road surfaces; the buffer folding support mechanism 52 quickly unfolds after being triggered by impact sensor 51, forming an energy-absorbing structure and reducing the deformation risk of the anti-collision vehicle body 1; this application improves the active safety and impact resistance of the anti-collision vehicle in complex traffic environments through a multi-modal protection mechanism of sound, light, vibration and mechanical buffer.

[0058] The sound warning mechanism 32 of this application is preferably a loudspeaker or horn, and the radar mechanism 31 is preferably a millimeter-wave radar.

[0059] Furthermore, such as Figure 2As shown, the warning support frame 41 includes a first extension support frame 411 located on one side of the anti-collision buffer device 2, a second extension support frame 412 located on the other side of the anti-collision buffer device 2 and arranged parallel to the first extension support frame 411, and a vibration support frame 413 arranged in an array between the first extension support frame 411 and the second extension support frame 412 and arranged in an array away from the anti-collision buffer device 2. The vibration warning mechanism 44 is provided on the vibration support frame 413.

[0060] The warning support frame 41 of this application forms a symmetrical support structure by having the first extended support frame 411 and the second extended support frame 412 distributed in parallel on both sides of the anti-collision buffer device 2. When a vehicle approaches, the extended layout expands the collision contact monitoring range. When a vehicle behind presses on the vibration support frame 413, the pressure sensor 42 is triggered to generate an electrical signal, which synchronously drives the vibration warning mechanism 44 to generate high-frequency mechanical vibration along the vibration support frame 413, forming a tactile sensing alarm. This allows the mechanical vibration signal to be directly transmitted to the vehicle, enhancing the warning penetration. At the same time, the arrayed vibration support frame 413 disperses the impact energy through multiple nodes, reducing local stress concentration.

[0061] This application, through the coordinated layout of the double-sided first extended support frame 411 and second extended support frame 412 with the array-type vibration support frame 413, expands the collision contact monitoring area while utilizing a multi-level support structure to achieve pressure dispersion and accurate sensing. Combined with the distributed arrangement of the vibration warning mechanism 44 on the vibration support frame 413, it enhances the tactile warning intensity, especially for collision scenarios on inclined roads, ensuring the reliability and sensitivity of the secondary warning system under complex impacts.

[0062] Both the first extension support frame 411 and the second extension support frame 412 are preferably made of flexible plastic to facilitate rolling or folding for storage; the distance between the first extension support frame 411 and the second extension support frame 412 is equal to the lane width, and the vibration warning mechanism 44 is preferably a vibrator.

[0063] Furthermore, such as Figure 2 As shown, the vibration support frame 413 includes a support frame body 4131, a warning detection slope 4132 disposed on the support frame body 4131, and a warning vibration plane 4133 disposed on the support frame body 4131 and located on one side of the warning detection slope 4132; the pressure sensor 42 is connected to the warning detection slope 4132, the vibration warning mechanism 44 is disposed on the warning vibration plane 4133 and electrically connected to the pressure sensor 42, the warning vibration plane 4133 is provided with a vibration fixing hole 4134 disposed along the length direction of the support frame body 4131, and the vibration warning mechanism 44 is inserted into the vibration fixing hole 4134.

[0064] When a vehicle comes into contact with the warning detection slope 4132, the pressure sensor 42 detects the pressure signal in real time and triggers the vibration warning mechanism 44 to start. The vibration warning mechanism 44 generates high-frequency mechanical vibration through the vibration fixing hole 4134 on the warning vibration plane 4133 and transmits tactile warning to the car's cab through the car tires. The inclined design of the warning detection slope 4132 is used to guide the collision force to be dispersed along the slope direction, reducing the local stress concentration of the support frame body 4131. The vibration warning mechanism 44 is embedded in the pre-warning detection slope 4132 through the vibration fixing hole 4134. The vibration plane 4133 ensures that vibration energy is uniformly transmitted along the length of the support frame body 4131, preventing the vibration warning mechanism 44 from falling off or shifting. The physical isolation design between the warning detection slope 4132 (pressure sensing) and the warning vibration plane 4133 (tactile feedback) enables the collaborative operation of collision detection and warning response, shortening the signal transmission delay. The array arrangement of the vibration fixing holes 4134 optimizes the vibration wave transmission path, expanding the tactile warning coverage area to the entire length of the support frame body 4131, improving the warning recognition rate in car collision scenarios.

[0065] The two ends of the support frame body 4131 are respectively connected to the first extended support frame 411 and the second extended support frame 412.

[0066] Specifically, such as Figure 3 As shown, both the first extension support frame 411 and the second extension support frame 412 include an extension support body 4111 and an inclined guide slope 4112 provided at the end of the extension support body 4111.

[0067] The extension bracket body 4111 is provided with flashing fixing slots 4113 arranged in an array along the length direction of the extension bracket body 4111, and the extension bracket body 4111 is also provided with a flashing warning slope 4114 located in the flashing fixing slots 4113; the flashing warning mechanism 43 is provided on the flashing warning slope 4114 and is electrically connected to the pressure sensor 42.

[0068] When a vehicle comes into contact with the warning detection ramp 4132, the pressure sensor 42 triggers the flashing warning mechanism 43 to project a strong light warning onto the flashing warning ramp 4114 at an angle facing the vehicle's cab. The inclined guide ramp 4112 converts the impact force into a component force along the axial direction of the extension bracket body 4111 through its inclined structure, reducing the risk of damage to the extension bracket body 4111 from the impact. The array of flashing fixing slots 4113 allows the flashing warning mechanism 43 to be evenly arranged along the length of the extension bracket body 4111. Combined with the inclined reflective surface design of the flashing warning ramp 4114, it achieves light signal coverage of the vehicle's cab, improving the effect of the flashing warning.

[0069] The flash warning mechanism 43 is preferably an LED flash lamp; the end of the extension bracket body 4111 is connected to the crash barrier body 1, and the inclined guide slope 4112 is provided on the extension bracket body 4111 at the other end relative to the crash barrier body 1.

[0070] More specifically, if Figure 2 As shown, the anti-collision buffer device 2 includes an anti-collision bag housing 21 connected to the rear end of the anti-collision vehicle body 1, and an anti-collision buffer bag 22 inserted into the anti-collision bag housing 21;

[0071] Impact sensor 51 is connected to the anti-collision bag housing 21 and located between the secondary warning device 4 and the anti-collision buffer bag 22; buffer folding support mechanism 52 is inserted into the anti-collision bag housing 21 and located between the anti-collision vehicle body 1 and the anti-collision buffer bag 22.

[0072] When a vehicle collides with the anti-collision housing 21, the impact sensor 51 detects the deformation pressure of the anti-collision housing 21 in real time and triggers the buffer folding support mechanism 52 to unfold towards the anti-collision vehicle body 1 for multi-stage energy absorption. The impact sensor 51 is located between the secondary warning device 4 and the anti-collision buffer 22, which can accurately distinguish the contact pressure in the warning stage and the impact load in the collision stage, avoiding false triggering of the buffer folding support mechanism 52. After being triggered by the impact sensor 51, the buffer folding support mechanism 52 unfolds in a direction away from the anti-collision vehicle body 1, dynamically reinforcing the buffer support force. The coordinated deformation of the buffer folding support mechanism 52 and the anti-collision buffer 22 forms a gradient energy absorption path, so that the collision energy is dissipated step by step through the deformation of the anti-collision housing 21, the unfolding resistance of the folding mechanism, and the plastic deformation of the anti-collision buffer 22, maximizing the extension of the collision deceleration time.

[0073] The anti-collision buffer pack 22 of this application is preferably an inflatable airbag structure. The nested structure of the anti-collision pack shell 21 and the anti-collision buffer pack 22 forms a composite energy absorption system of "rigid shell-flexible buffer layer". The anti-collision pack shell 21 disperses the initial impact force and the anti-collision buffer pack 22 absorbs the residual energy, thereby improving the overall impact resistance efficiency.

[0074] In addition, such as Figure 2 and Figure 4 As shown, the buffer folding support mechanism 52 includes buffer support seats 521 connected to the two side walls of the anti-collision bag housing 21, a hinged buffer frame 522 connected to the anti-collision bag housing 21 and located between the two buffer support seats 521, and a buffer drive assembly 523 connected to the buffer support seats 521 and used to drive the hinged buffer frame 522 to unfold or fold; the buffer drive assembly 523 is electrically connected to the impact sensor 51.

[0075] When the impact sensor 51 detects a collision impact force, the buffer drive assembly 523 is triggered. The buffer drive assembly 523 drives the hinged buffer frame 522 to unfold from the folded state away from the buffer support seats 521 on both sides, forming a support structure. The buffer support seats 521 are symmetrically distributed on both sides of the anti-collision housing 21. Through the rigid connection with the anti-collision housing 21, the overall torsional stiffness of the buffer drive assembly 523 after unfolding is improved. The hinged buffer frame 522 forms a gradient energy absorption buffer by acting in the opposite direction to the collision impact force through multi-segment dynamic unfolding resistance, which improves the early warning linkage and buffering effect.

[0076] The buffer drive assembly 523 is preferably an electric push rod or a hydraulic cylinder to enable the articulated buffer frame 522 to deploy quickly, ensuring the timeliness of the three-level early warning protection response.

[0077] And, as Figure 4 As shown, the articulated buffer frame 522 includes an articulated support rod 5221 fixedly connected to the upper and lower side walls of the anti-collision housing 21, a first articulated rod 5222 sleeved on the outer side wall of the articulated support rod 5221 and rotatably connected to the articulated support rod 5221, and a second articulated rod 5223 sleeved on the outer side wall of the articulated support rod 5221 and rotatably connected to the articulated support rod 5221; the first articulated rod 5222 and the second articulated rod 5223 are arranged crosswise and stacked sequentially along the length direction of the articulated support rod 5221.

[0078] When the buffer drive assembly 523 is activated, the first hinge rod 5222 and the second hinge rod 5223 rotate and unfold synchronously around the hinge support rod 5221. The hinge support rod 5221 is symmetrically fixed to the upper and lower side walls of the anti-collision bag shell 21 to ensure that the first hinge rod 5222 and the second hinge rod 5223 are subjected to uniform force when unfolded, avoiding structural instability caused by unilateral deflection. The cross-stacked first hinge rod 5222 and the second hinge rod 5223 form an "X"-shaped multi-directional support node after unfolding, which improves the bending strength of the structure through the mutual constraint between the rods. In the folded state, the first hinge rod 5222 and the second hinge rod 5223 are close to the hinge support rod 5221, saving the internal space of the anti-collision bag shell 21. After unfolding, the multi-node bracket and the anti-collision buffer bag 22 together form a composite energy absorption path, which improves the buffer performance.

[0079] Furthermore, such as Figure 5 As shown, the first hinge rod 5222 and the second hinge rod 5223 both include a hinge rod body 5224, a fixed connecting plate 5225 located near one end of the crash barrier body 1 and connected to the multiple hinge rod bodies 5224, and a buffer support baffle 5226 located at the other end of the crash barrier body 1 and fixedly connected to the multiple hinge rod bodies 5224.

[0080] When the articulated rod body 5224 rotates and unfolds around the articulated support rod 5221, the fixed connecting plate 5225 locks the multiple articulated rod bodies 5224 into a unified synchronous movement. The buffer support baffle 5226 abuts against the surface of the impacting vehicle to form distributed support as it unfolds. The fixed connecting plate 5225 enhances the overall rigidity of the articulated rod group through a multi-rod parallel structure, preventing stress concentration caused by asynchronous unfolding of individual articulated rod bodies 5224. The large-area planar design of the buffer support baffle 5226 forms a surface contact with the impacting vehicle after unfolding, dispersing the impact load through friction and support reaction force, reducing the risk of bending of the articulated rod body 5224. The articulated rod body 5224 forms a bidirectional compression-resistant support structure after unfolding through the double-end constraint of the fixed connecting plate 5225 and the buffer support baffle 5226, improving bending strength. In the folded state, the buffer support baffle 5226 is close to the fixed connecting plate 5225, compressing the storage space and ensuring the miniaturization and rapid response characteristics of the anti-collision buffer device 2.

[0081] The hinge rod body 5224 is sleeved on the outer wall of the hinge support rod 5221 and is rotatably connected to the hinge support rod 5221.

[0082] Furthermore, such as Figure 5 and Figure 6 As shown, the buffer drive assembly 523 includes a drive component body 5231 connected to the buffer support 521, and a guide push-pull rod 5232 connected to the output end of the drive component body 5231 and movably inserted into the hinge rod body 5224; the two hinge rod bodies 5224 near the drive component body 5231 are respectively provided with push-pull sliding grooves 5233, the push-pull sliding grooves 5233 are arranged along the length direction of the hinge rod body 5224, and the two ends of the guide push-pull rod 5232 are respectively movably inserted into the two push-pull sliding grooves 5233.

[0083] When the impact sensor 51 triggers the start of the drive component body 5231, the guide push-pull rod 5232 slides linearly along the push-pull sliding groove 5233 within the hinge rod body 5224, pushing the hinge rods on both sides to simultaneously unfold to the locked position of the support. The linear guide design of the push-pull sliding groove 5233 restricts the movement trajectory of the guide push-pull rod 5232, ensuring that the unfolding angle of multiple hinge rod bodies 5224 is consistent, avoiding structural jamming due to differences in deflection angle. The guide push-pull rod 5232 is embedded at both ends into the push-pull sliding groove 5233 to form a double-sided force transmission path, so that the output thrust of the drive component body 5231 is evenly distributed to the hinge rod bodies 5224 on both sides, improving the unfolding speed and force transmission efficiency. The rigid connection structure between the drive component body 5231 and the buffer support seat 521 disperses the driving reaction force to the anti-collision housing 21 through the buffer support seat 521, reducing the risk of wear caused by the vibration of the buffer drive component 523 itself.

[0084] Specifically, such as Figure 4 and Figure 6 As shown, the buffer folding support mechanism 52 also includes an elastic buffer component 524 disposed between the buffer support baffle 5226 and the buffer support seat 521.

[0085] When the buffer folding support mechanism 52 is deployed, the impact force is transmitted to the elastic buffer component 524 through the buffer support baffle 5226. The elastic buffer component 524 absorbs residual kinetic energy through compression deformation and reduces the impact of rigid contact between the buffer support baffle 5226 and the buffer support seat 521. At the moment of impact, the elastic buffer component 524 absorbs the peak impact energy through compression deformation, reducing the risk of stress concentration in the hinge rod body 5224. The damping characteristics of the elastic buffer component 524 prolong the impact energy release time, making the buffer folding support mechanism more efficient. The deployment resistance and impact force of the structure 52 form a dynamic balance, preventing overload fracture at the connection between the buffer support seat 521 and the anti-collision bag shell 21; the elastic buffer component 524 presses against the buffer support baffle 5226 and the buffer support seat 521 in the non-collision state, so that the buffer support baffle 5226 and the buffer support seat 521 maintain a tendency to move away from each other; the coordinated deformation of the elastic buffer component 524 and the anti-collision buffer bag 22 forms a two-stage energy absorption mechanism of "elastic pre-compression-plastic energy dissipation", which reduces the peak collision acceleration and improves the buffering efficiency;

[0086] The elastic buffer component 524 is preferably a metal spring structure or a high-resilience rubber.

[0087] More specifically, if Figure 7 As shown, a method for issuing a collision avoidance warning device includes the following steps:

[0088] S1: When the vehicle reaches the preset distance detected by the radar mechanism 31, the radar mechanism 31 triggers the sound warning mechanism 32 to issue a sound alarm for a first-level warning;

[0089] S2: When the vehicle continues to move closer to the crash barrier body 1, the pressure sensor 42 is pressed down, triggering the flashing warning mechanism 43 to emit a high-frequency flashing light towards the vehicle. The pressure sensor 42 simultaneously triggers the vibration warning mechanism 44 to emit a high-frequency vibration for a secondary warning.

[0090] S3: When the vehicle hits the impact sensor 51 on the anti-collision buffer device 2, the impact sensor 51 triggers the buffer folding support mechanism 52 to unfold in a direction away from the anti-collision vehicle body 1 to provide a three-level warning.

[0091] In S1 of this application, the radar mechanism 31 detects a vehicle behind at a preset distance and triggers the sound warning mechanism 32 to emit a high-frequency sound wave warning; in S2, when the vehicle continues to approach and contacts the warning support frame 41, the pressure sensor 42 is pressed and triggers the flash warning mechanism 43 to project a high-frequency strong light, simultaneously activating the vibration warning mechanism 44 to generate mechanical vibration, forming a multimodal warning of sound, light, and touch; in S3, when the vehicle collides with the anti-collision buffer device 2, the impact sensor 51 detects the impact force preset threshold in real time and drives the buffer folding support mechanism 52 to unfold and form a rigid support frame, simultaneously compressing the anti-collision buffer bag 22 to absorb energy; this application constructs a "remote warning-contact warning- The "active buffer" three-level response logic shortens the warning response time by triggering signals from radar mechanism 31, pressure sensor 42, and impact sensor 51. In S2, the pressure sensor 42 outputs dual signals synchronously with vibration warning mechanism 44 and flashing warning mechanism 43, solving the risk of warning failure in rainy / foggy environments or when the driver is distracted. In S3, the design of the buffer folding support mechanism 52 unfolding in a direction away from the crash vehicle body 1 offsets the collision kinetic energy through unfolding reaction force, and dissipates the remaining energy step by step by combining the plastic deformation of the crash buffer bag 22. The dynamic coordination of multi-level warning signals and mechanical buffer actions improves the protective effectiveness.

[0092] The implementation principle of the alarm device and alarm method for a collision avoidance vehicle according to the embodiments of this application is as follows:

[0093] A collision avoidance vehicle alarm device, when the radar mechanism 31 detects a vehicle approaching from behind, triggers the sound warning mechanism 32 to provide an audible alert, thus achieving a first-level warning; if the vehicle continues to approach and contacts the warning support frame 41, the pressure sensor 42 triggers the flashing warning mechanism 43 to emit a strong flashing warning, and simultaneously triggers the vibration warning mechanism 44 to emit a mechanical vibration reminder, thus achieving a second-level warning; when the collision impact force reaches a preset threshold, the impact sensor 51 triggers the buffer folding support mechanism 52 to unfold to enhance the structural strength of the collision avoidance buffer device 2, forming a third-level active protection;

[0094] This application achieves a dynamic response of "long-range early warning - contact warning - collision buffer" through the three-level coordination of radar mechanism 31, pressure sensor 42 and impact sensor 51, improving the timeliness and stability of early warning; the extended design of the early warning support frame 41 expands the detection range of pressure sensor 42, and combined with the tactile feedback of vibration early warning mechanism 44, effectively covers collision scenarios on inclined road surfaces; the buffer folding support mechanism 52 quickly unfolds after being triggered by impact sensor 51, forming an energy-absorbing structure and reducing the deformation risk of the anti-collision vehicle body 1; this application improves the active safety and impact resistance of the anti-collision vehicle in complex traffic environments through a multi-modal protection mechanism of sound, light, vibration and mechanical buffer.

[0095] When a car collides with the crash barrier housing 21, the impact sensor 51 detects the deformation pressure of the crash barrier housing 21 in real time and triggers the buffer folding support mechanism 52 to unfold towards the crash barrier body 1 for multi-stage energy absorption. The impact sensor 51 is located between the secondary warning device 4 and the crash barrier buffer 22, which can accurately distinguish the contact pressure in the warning stage from the impact load in the collision stage, and avoid false triggering of the buffer folding support mechanism 52. After the impact sensor 51 is triggered, the buffer folding support mechanism 52 unfolds in a direction away from the crash barrier body 1, dynamically reinforcing the buffer support force. The coordinated deformation of the buffer folding support mechanism 52 and the crash barrier buffer 22 forms a gradient energy absorption path, so that the collision energy is dissipated step by step through the deformation of the crash barrier housing 21, the unfolding resistance of the folding mechanism, and the plastic deformation of the crash barrier buffer 22, maximizing the extension of the collision deceleration time.

[0096] A collision avoidance alarm method includes the following steps: In step S1, a radar mechanism 31 detects a vehicle behind at a preset distance and triggers an audible warning mechanism 32 to emit a high-frequency sound wave warning; In step S2, when a vehicle continuously approaches and contacts the warning support frame 41, a pressure sensor 42 is pressed, triggering a flashing warning mechanism 43 to project a high-frequency strong light and simultaneously activating a vibration warning mechanism 44 to generate mechanical vibration, forming a multimodal warning system of sound, light, and touch; In step S3, when the vehicle collides with the collision avoidance buffer device 2, an impact sensor 51 detects the impact force at a preset threshold in real time and drives the buffer folding support mechanism 52 to unfold and form a rigid support frame, simultaneously compressing the collision avoidance buffer bag 22 to absorb energy. This application constructs a "remote warning-connection" system. The "touch warning - active buffer" three-level response logic shortens the warning response time by triggering signals from radar mechanism 31, pressure sensor 42, and impact sensor 51. In S2, the pressure sensor 42 outputs dual signals synchronously with vibration warning mechanism 44 and flashing warning mechanism 43, solving the risk of warning failure in rainy / foggy environments or when the driver is distracted. In S3, the design of the buffer folding support mechanism 52 unfolding in a direction away from the crash vehicle body 1 offsets the collision kinetic energy through unfolding reaction force, and the remaining energy is dissipated step by step by the plastic deformation of the crash buffer bag 22. The dynamic coordination of multi-level warning signals and mechanical buffer actions improves the protective effectiveness.

[0097] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An alarm device for a collision avoidance vehicle, characterized in that, It includes a crash protection vehicle body (1), a crash protection buffer device (2) connected to the rear end of the crash protection vehicle body (1), a first-level warning device (3), a second-level warning device (4), and a third-level warning device (5) connected to the crash protection buffer device (2); The first-level early warning device (3) includes a radar mechanism (31) connected to the tail end of the anti-collision buffer device (2) and a sound warning mechanism (32) connected to the head end of the anti-collision buffer device (2); The secondary warning device (4) includes a warning support frame (41) connected to the tail end of the anti-collision buffer device (2) and extending in a direction away from the anti-collision buffer device (2), a pressure sensor (42) connected to the warning support frame (41), a flash warning mechanism (43) connected to the warning support frame (41) and electrically connected to the pressure sensor (42), and a vibration warning mechanism (44) connected to the warning support frame (41) and electrically connected to the pressure sensor (42); The three-level early warning device (5) includes an impact sensor (51) connected to the tail end of the anti-collision buffer device (2), and a buffer folding support mechanism (52) inserted into the anti-collision buffer device (2) and electrically connected to the impact sensor (51); The warning support frame (41) includes a first extension support frame (411) located on one side of the anti-collision buffer device (2), a second extension support frame (412) located on the other side of the anti-collision buffer device (2) and arranged parallel to the first extension support frame (411), and a vibration support frame (413) arranged in an array between the first extension support frame (411) and the second extension support frame (412) and arranged in a direction away from the anti-collision buffer device (2). The vibration warning mechanism (44) is provided on the vibration support frame (413). The anti-collision buffer device (2) includes an anti-collision bag housing (21) connected to the rear end of the anti-collision vehicle body (1), and an anti-collision buffer bag (22) inserted into the anti-collision bag housing (21); The impact sensor (51) is connected to the anti-collision bag housing (21) and located between the secondary warning device (4) and the anti-collision buffer bag (22); the buffer folding support mechanism (52) is inserted into the anti-collision bag housing (21) and located between the anti-collision vehicle body (1) and the anti-collision buffer bag (22); The buffer folding support mechanism (52) includes buffer support seats (521) connected to the two side walls of the anti-collision bag housing (21), a hinged buffer frame (522) connected to the anti-collision bag housing (21) and located between the two buffer support seats (521), and a buffer drive assembly (523) connected to the buffer support seats (521) and used to drive the hinged buffer frame (522) to unfold or fold; the buffer drive assembly (523) and the impact sensor (51) are electrically connected.

2. The alarm device for a collision avoidance vehicle according to claim 1, characterized in that, The vibration support frame (413) includes a support frame body (4131), a warning detection slope (4132) provided on the support frame body (4131), and a warning vibration plane (4133) provided on the support frame body (4131) and located on one side of the warning detection slope (4132); the pressure sensor (42) is connected to the warning detection slope (4132), the vibration warning mechanism (44) is provided on the warning vibration plane (4133) and electrically connected to the pressure sensor (42), the warning vibration plane (4133) is provided with a vibration fixing hole (4134) provided along the length direction of the support frame body (4131), and the vibration warning mechanism (44) is inserted into the vibration fixing hole (4134).

3. The alarm device for a collision avoidance vehicle according to claim 1, characterized in that, Both the first extension support frame (411) and the second extension support frame (412) include an extension support body (4111) and an inclined guide slope (4112) provided at the end of the extension support body (4111). The extension bracket body (4111) is provided with flashing fixing slots (4113) arranged in an array along the length direction of the extension bracket body (4111), and the extension bracket body (4111) is also provided with a flashing warning slope (4114) located in the flashing fixing slots (4113); the flashing warning mechanism (43) is provided on the flashing warning slope (4114) and is electrically connected to the pressure sensor (42).

4. The alarm device for a collision avoidance vehicle according to claim 1, characterized in that, The hinged buffer frame (522) includes a hinged support rod (5221) fixedly connected to the upper and lower side walls of the anti-collision housing (21), a first hinge rod (5222) sleeved on the outer side wall of the hinged support rod (5221) and rotatably connected to the hinged support rod (5221), and a second hinge rod (5223) sleeved on the outer side wall of the hinged support rod (5221) and rotatably connected to the hinged support rod (5221); the first hinge rod (5222) and the second hinge rod (5223) are arranged crosswise and stacked sequentially along the length direction of the hinged support rod (5221).

5. The alarm device for a collision avoidance vehicle according to claim 4, characterized in that, Both the first hinge rod (5222) and the second hinge rod (5223) include a hinge rod body (5224), a fixed connecting plate (5225) located near one end of the crash barrier body (1) and connected to the plurality of hinge rod bodies (5224), and a buffer support baffle (5226) located at the other end of the crash barrier body (1) and fixedly connected to the plurality of hinge rod bodies (5224).

6. The alarm device for a collision avoidance vehicle according to claim 5, characterized in that, The buffer drive assembly (523) includes a drive component body (5231) connected to the buffer support (521), and a guide push-pull rod (5232) connected to the output end of the drive component body (5231) and movably inserted into the hinge rod body (5224); the two hinge rod bodies (5224) near the drive component body (5231) are respectively provided with push-pull sliding grooves (5233), the push-pull sliding grooves (5233) are arranged along the length direction of the hinge rod body (5224), and the two ends of the guide push-pull rod (5232) are respectively movably inserted into the two push-pull sliding grooves (5233).

7. A method for issuing an alarm for a collision avoidance vehicle, characterized in that, The alarm device for a collision avoidance vehicle as described in any one of claims 1 to 6 further includes the following steps: S1: When the vehicle reaches the preset distance detected by the radar mechanism (31), the radar mechanism (31) triggers the sound warning mechanism (32) to issue a sound alarm for a first-level warning; S2: When the vehicle continues to move closer to the anti-collision vehicle body (1), the pressure sensor (42) is pressed down, triggering the flash warning mechanism (43) to emit a high-frequency flash in front of the vehicle. The pressure sensor (42) simultaneously triggers the vibration warning mechanism (44) to emit a high-frequency vibration for secondary warning. S3: When the vehicle hits the impact sensor (51) on the anti-collision buffer device (2), the impact sensor (51) triggers the buffer folding support mechanism (52) to unfold in a direction away from the anti-collision vehicle body (1) to provide a three-level warning.

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