Automobile emergency escape scheme and device

Abstract

The application discloses an automobile emergency danger avoiding scheme and device and belongs to the technical field of automobile safety danger avoiding. In order to solve the technical blank of the fact that the existing vehicle braking system cannot cope with extreme danger such as brake failure and out-of-control on long downhill and lacks mechanical emergency bottom braking, the device comprises a vehicle body, a controller and a danger avoiding harrow assembly at the tail of a chassis. When danger occurs, the cab is triggered to be unlocked by one key, the harrow frame falls to the ground, the irreversible locking is realized by cooperating with the one-way self-locking structure, the tail of the vehicle is lifted by the electric lifter, the harrow teeth are made to bite the road surface to generate dragging friction force by relying on the self-weight of the whole vehicle, and the vehicle is forced to be stably decelerated and stopped. The application is independent of the original vehicle braking system, the braking is reliable, the self-locking is strong, the storage does not affect the original vehicle performance, the operation is convenient, the application is suitable for a wide range of vehicle models, and the bottom capacity of the driving safety under extreme working conditions of the vehicle can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of automotive safety and hazard avoidance technology, specifically to an automotive emergency hazard avoidance scheme and device. Background Technology

[0002] Road transport is a core mode of transportation in my country's transportation system, with freight and passenger vehicles widely used in various road conditions. When vehicles travel on mountain roads, icy or snowy roads, slippery muddy roads, or gravel roads, they are highly susceptible to extreme and dangerous situations such as brake system failure, brake performance degradation, skidding, loss of control at high speeds, and sudden rear-end collisions. According to industry statistics, freight vehicles are involved in approximately 47,000 traffic accidents annually in my country, making them the vehicle type with the highest fatality rate in road traffic. The property damage caused by freight vehicles accounts for about one-third of all motor vehicle accident losses, highlighting a significant threat to road safety.

[0003] Currently, existing vehicle safety protection systems mainly consist of conventional active and passive protection structures such as ABS anti-lock braking system, ESC electronic stability control system, active braking system, and airbags. These structures can only cope with minor and routine accidents in daily driving, and their protective limitations are extremely large. When a vehicle encounters extreme situations such as complete brake failure, continuous acceleration on a long downhill slope, or high-speed skidding and loss of control, current technology lacks reliable and powerful emergency mechanical braking means to quickly tow the vehicle to achieve forced deceleration and avoid danger, which can easily lead to accidents with serious casualties and property damage.

[0004] At present, the industry lacks mature, reliable, and mass-producible emergency braking devices for vehicles under extreme conditions, resulting in a significant gap in automotive safety technology. The market urgently needs an ultimate emergency braking device that can be adapted to various freight and passenger vehicles, achieve one-button emergency braking, self-locking stability, and reusability. Summary of the Invention

[0005] The purpose of this invention is to address the deficiencies and shortcomings of existing technologies by providing an emergency avoidance solution and device for automobiles, solving the problems that existing vehicle braking systems cannot cope with extreme loss of control situations and lack mechanical emergency braking capabilities, filling a technological gap in the industry, and significantly improving the driving safety of vehicles under extreme conditions.

[0006] To achieve the above objectives, the present invention employs the following technical means:

[0007] An emergency avoidance device for automobiles includes a vehicle body, a controller, and an avoidance rake assembly; the controller is installed in the driver's cab of the vehicle body; the avoidance rake assembly is installed on the underside of the vehicle chassis at the rear of the vehicle body;

[0008] The hazard-avoiding rake assembly includes a rake frame, a lifting device slide, a one-way sliding catch, an electric lifting device, an electric lock, a locking structure, and rake teeth. The front end of the rake frame is hinged to the vehicle chassis, and the upper end of the lifting device slide is hinged to the vehicle chassis. The electric lifting device is slidably inserted into the inside of the lifting device slide, and a slot is provided on the side wall of the electric lifting device. The one-way sliding catch is located on the inner wall of the lifting device slide and engages with the slot in a one-way locking fit. The rake frame is equipped with an electric lifting device, a locking structure, and rake teeth. The vehicle chassis is equipped with an electric lock that matches the locking structure.

[0009] The controller is electrically connected to the electric lift and the electric lock and is connected to the vehicle's power supply.

[0010] Preferably, the vehicle body is a non-load-bearing automobile body.

[0011] Preferably, the front end of the rake frame is tilted upwards, forming a 135° angled force-bearing structure with the rear end of the rake frame.

[0012] Preferably, 4-8 high-strength wear-resistant alloy steel rake teeth are detachably and evenly arranged on the lower side of the rake frame, and the ends of the rake teeth are hardened.

[0013] Preferably, the rake teeth have an axe-shaped structure, and an elliptical hole is provided through the front of the rake teeth.

[0014] Preferably, two electric lifters are installed side by side on the upper rear end of the rake frame; the upper end of the electric lifter is a fixed square iron section, and a right-angled triangular groove is opened on the side wall of the square iron section. One right-angled side of the groove extends along the axial direction of the square iron section, and the other right-angled side is located on the upper part of the square iron section, forming an inverted triangle arrangement.

[0015] Preferably, the inner wall of the lifting device slide cylinder is evenly arranged with 2-4 automatic spring-loaded locking tongue-shaped one-way sliding clips. The one-way sliding clips match and engage with the right-angled triangular slots, allowing the electric lifting device to slide downwards in one direction only. During the downward movement, the device locks itself in place step by step and cannot retract, forming a one-way irreversible self-locking structure.

[0016] Preferably, the hazard avoidance rake assembly is independent of the vehicle's original ABS, ESC, and active braking systems, serving as the ultimate emergency braking backup structure under extreme vehicle conditions.

[0017] A vehicle emergency avoidance solution, applied to the aforementioned vehicle emergency avoidance device, includes the following operational steps:

[0018] S1, Standby Storage State: When the electric lock is powered on, the locking mechanism tightens the entire obstacle avoidance rake assembly upwards, so that the obstacle avoidance rake assembly is tightly stored under the chassis of the vehicle. The device is in standby state and does not affect the vehicle's passability, wind resistance, or normal driving energy consumption.

[0019] S2. Emergency Trigger Braking: When the vehicle experiences brake failure, loss of control on a long downhill slope, skidding, or a sudden rear-end collision, a single button on the cab controller will trigger the electric lock to instantly unlock the latch structure. The rear end of the rake frame will rapidly descend under its own weight until the rake teeth contact the ground. Simultaneously, the electric lift will rapidly slide down the lift cylinder, and the one-way sliding plate will automatically engage with the right-angled triangular slot, completing a rigid one-way irreversible lock. Then, the electric lift will start the lifting operation, gradually raising the rear of the vehicle and transferring the vehicle's weight from the wheels to the emergency rake assembly. Relying on the vehicle's own weight, the rake teeth will bite into the road surface, generating a high-intensity reverse drag friction force, forcing the out-of-control vehicle to decelerate smoothly until it comes to a complete stop.

[0020] S3. Hazard Resolution and Reset: After the hazard is resolved, control the electric lift to retract and reset, manually release the locking limit of the one-way sliding block, raise the rear end of the rake frame, and re-lock the locking structure into the electric lock to complete the locking. The hazard avoidance rake assembly is reset and fits against the chassis for storage, restoring the standby driving state. It can be reused repeatedly.

[0021] The present invention has the following beneficial effects:

[0022] 1. Filling a technological gap in the industry: This invention sets up a mechanical emergency avoidance structure that is independent of the original vehicle's conventional braking systems such as ABS, ESC, and active braking. It provides a second layer of ultimate safety protection for extreme loss of vehicle control, breaking through the limitation of existing vehicle safety systems that can only deal with minor dangers, and significantly improving the upper limit of vehicle driving safety.

[0023] 2. Extremely strong braking performance: This device relies on the vehicle's own weight to apply pressure, and through the high-strength hardened rake teeth biting into the ground, it forms a mechanical drag braking force. The braking force is far greater than that of the vehicle's conventional braking system. It can work stably on various complex and extreme road surfaces such as wet and slippery, ice and snow, steep slopes, and gravel, completely solving the problem of braking failure under extreme working conditions.

[0024] 3. Extremely high self-locking reliability: The lifting device slide cylinder is combined with a triangular groove to form a one-way self-locking structure, which forms an irreversible hard lock. The greater the force, the stronger the lock. There is no rebound, loosening, or failure throughout the braking process. The structure has extremely high stability and safety under extreme working conditions.

[0025] 4. Does not affect the original vehicle performance: The device is normally completely stored under the car chassis without modifying the original main structure of the vehicle. It does not affect the normal passability of the vehicle, does not increase wind resistance or energy consumption, and is suitable for the normal daily use of the vehicle.

[0026] 5. Convenient and efficient operation: It adopts a one-button electronic control trigger mode in the cab, which has a fast response speed and can instantly activate the hazard avoidance program in critical moments without complicated operation, making it suitable for drivers to quickly handle dangerous situations in emergency situations.

[0027] 6. Durable structure and wide adaptability: The device is mainly based on mechanical structure and supplemented by electrical control structure. It has a low failure rate, long service life, and simple and convenient maintenance. It can be widely adapted to the retrofitting and modification of various non-load-bearing motor vehicles such as trucks and buses, and has strong mass production practicality. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0030] Figure 3 This is a schematic diagram of the structure of the avoidance rake assembly of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the lifting device slide and the electric lifting device of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the rake teeth of the present invention;

[0033] Figure label:

[0034] Vehicle body 1, controller 2, obstacle avoidance rake assembly 3, rake frame 301, lifting device slide 302, one-way sliding block 303, slot 304, electric lifting device 305, electric control lock 306, locking structure 307, rake teeth 308. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figure 1-5 As shown, the present invention provides an emergency avoidance device for automobiles, including a vehicle body 1, a controller 2, and an avoidance rake assembly 3; the vehicle body 1 is a non-load-bearing vehicle body; the controller 2 is installed in the driver's cab of the vehicle body 1 for easy one-button operation by the driver; the avoidance rake assembly 3 is installed under the chassis at the rear of the vehicle body 1 and does not occupy the external space of the vehicle body.

[0037] The obstacle avoidance rake assembly 3 includes a rake frame 301, a lifting device slide 302, a one-way sliding block 303, an electric lifting device 305, an electric lock 306, a locking structure 307, and rake teeth 308. The front end of the rake frame 301 is hinged to the chassis of the vehicle body 1 via a movable shaft. The front end of the rake frame 301 is tilted upwards, forming a 135° angled force-bearing structure with the rear end of the rake frame 301. This structure can maximize the dispersion and bearing of road drag resistance, improving structural stability. 4-8 high-strength wear-resistant alloy steel rake teeth 308 are evenly arranged on the lower side of the rake frame 301 via detachable movable pins. The ends of the rake teeth 308 are hardened, allowing them to stably cut into various complex road surfaces and ensuring anti-skid braking effect.

[0038] Two electric lifters 305 are installed side-by-side on the upper rear side of the rake frame 301. The upper end of each electric lifter 305 is a fixed square iron section. The side wall of the square iron section has a deep right-angled triangular groove 304. One right-angled side of the groove 304 extends axially along the iron section, while the other right-angled side is located at the top of the iron section, forming an inverted triangle arrangement. The upper end of the electric lifter 305 is slidably inserted into the hollow lifter slide cylinder 302. Two to four self-returning, tongue-shaped one-way sliding latches 303 are evenly arranged on the inner wall of the lifter slide cylinder 302. The one-way sliding latches 303 precisely match the right-angled triangular grooves 304, allowing the electric lifter 305 to slide downwards in only one direction. During the downward movement, it automatically locks itself in place step by step, and once locked, it cannot retract, forming a one-way irreversible self-locking structure. The greater the force, the more secure the lock. The upper end of the lifter slide cylinder 302 is hinged and fixed to the chassis of the vehicle body 1 via a movable shaft.

[0039] A locking structure 307 is fixedly installed on the upper rear end of the rake frame 301, and an electric lock 306 corresponding to the locking structure 307 is fixedly installed on the chassis of the vehicle body 1. The controller 2 is connected to the electric lift 305 and the electric lock 306 respectively through the power line, and the electric lift 305, the electric lock 306 and the controller 2 are all connected to the vehicle power supply to form a complete electric control circuit, realizing one-button electric control triggering in the cab.

[0040] The rake tooth 308 has an axe-shaped structure with an elliptical hole through its front. This structural design can significantly improve the engagement between the rake tooth 308 and the road surface, effectively preventing sideslip and deviation during braking and ensuring braking stability.

[0041] Working principle

[0042] This invention relates to an emergency vehicle avoidance solution and device. The entire device relies on the core logic of electronic unlocking, gravity-driven descent, one-way mechanical self-locking, vehicle weight-based friction braking, and manual reset and storage. The entire process is divided into three stages: standby storage state, emergency-triggered braking state, and emergency-reset storage state. All structural designations are consistent with the original patent. The specific working principle is as follows:

[0043] I. Backup Storage Standby Principle

[0044] During normal vehicle operation, the electronic lock 306 at the lower end of the chassis 1 is continuously energized to lock the latch structure 307, causing the entire rake assembly 3 to be pulled upwards and tightened. At this time, the rake frame 301 is suspended and stored against the bottom of the chassis 1, the electric lifter 305 is in the retracted high position, and the one-way sliding plate 303 and the slot 304 are in a separated and ready-to-use state.

[0045] The entire set of obstacle avoidance components 3 is completely hidden under the chassis, without changing the original vehicle's passability, wind resistance, and driving energy consumption. It has no exposed structure, does not affect the normal driving of the vehicle, and is in a standby state with power on and ready to be triggered at any time.

[0046] II. Triggering and Braking Principles in Extreme Emergency Situations

[0047] When the vehicle experiences extreme loss of control such as complete brake failure, continuous acceleration on a long downhill slope, high-speed skidding and tail-swing, or impending rear-end collision, the driver can trigger an emergency avoidance command with one button on the controller 2 in the cab.

[0048] The controller 2 instantly controls the electric lock 306 to de-energize and unlock, the locking structure 307 quickly disengages, the rear end of the rake frame 301 loses its locking constraint, and quickly flips and falls downwards under its own gravity; because the front end of the rake frame 301 is hinged to the chassis of the vehicle body 1 through the movable shaft, a fixed-point flipping structure is formed, ensuring that the falling posture is stable and does not deviate, and finally the rake teeth 308 at the bottom of the rake frame 301 smoothly fits the road surface.

[0049] As the rake frame 301 descends, the two electric lifting devices 305 descend synchronously with it. The square iron section at the upper end of each electric lifting device 305 slides rapidly downwards along the inner wall of the lifting device slide cylinder 302. The automatic rebound one-way sliding catch 303 arranged on the inner wall of the lifting device slide cylinder 302 then engages with the right-angled triangular catch groove 304 on the side wall of the electric lifting device 305, forming a one-way irreversible mechanical self-locking structure. This structure only allows downward movement and prohibits retraction; the greater the force, the tighter the engagement, completely eliminating the problems of rebound, loosening, and failure during braking.

[0050] After self-locking is completed, the electric lift 305 starts the lifting operation, gradually raising the rear of the vehicle body 1, transferring most of the vehicle's weight from the wheels to the obstacle avoidance rake assembly 3. Relying on the pressure of the vehicle's own weight, the high-strength hardened rake teeth 308 gradually bite and penetrate into the road surface, forming a huge positive pressure and sliding friction on various road surfaces, generating a reverse drag braking force far exceeding that of the original vehicle braking system.

[0051] Meanwhile, the 135° oblique force structure formed by the rake frame 301 can stably disperse road resistance, avoid structural deformation and lateral deviation, continuously restrain the inertial impact force of the vehicle, force out-of-control vehicles to decelerate smoothly and slowly until the whole vehicle comes to a complete stop, and fundamentally prevent major accidents such as vehicle loss of control, rear-end collisions, and rollovers.

[0052] III. Principles of Emergency Clearance and Repositioning / Storage

[0053] After the vehicle has come to a complete stop and the danger has been completely eliminated, the electric lifter 305 is retracted and reset via the cab controller 2 to eliminate the stress on the top support. The locking limit of the one-way sliding block 303 is manually released, causing the one-way sliding block 303 to disengage from the slot 304 and releasing the irreversible self-locking constraint.

[0054] The rear end of the rake frame 301 is manually lifted upwards, and the locking structure 307 on the rake frame 301 is realigned and engaged with the electric lock 306 on the chassis of the vehicle body 1. The electric lock 306 is energized and locked in place, ensuring that the entire set of obstacle avoidance rake assembly 3 is once again tightly fitted to the chassis for storage. After resetting, the one-way sliding latch 303 automatically springs back to its original position, restoring the one-way self-locking function. The device returns to its initial standby state and can be reused repeatedly.

[0055] IV. Summary of Core Work Advantages

[0056] 1. Independent backup braking: The entire device is completely independent of the original vehicle's ABS, ESC, active braking and other braking systems. It does not rely on the original vehicle's brake oil circuit, electrical circuit and air circuit. It can still work normally when the original vehicle's brakes completely fail, achieving ultimate safety backup.

[0057] 2. Gravity + self-weight dual braking: The rake drops quickly by gravity, and the braking relies on the vehicle's own weight to press against the road surface, resulting in stable and strong braking force that is not affected by extreme road conditions such as wet, slippery, icy, snowy, steep slopes, and gravel.

[0058] 3. High reliability of mechanical self-locking: It adopts an inverted triangular slot + spring slide one-way self-locking structure, which is purely mechanically locked by force. The electronic control is only responsible for triggering and resetting. The failure rate is extremely low and the stability is extremely strong under extreme working conditions.

[0059] 4. No damage to original vehicle performance: Under normal conditions, it is fully retracted and not exposed. Before triggering or after resetting, it does not affect the vehicle's normal driving, passability, or energy consumption. It is suitable for retrofitting and modifying various freight and passenger vehicles.

[0060] This invention provides a vehicle emergency avoidance solution, comprising three main workflows: backup storage, emergency-triggered braking, and emergency reset. The specific steps are as follows:

[0061] S1, Standby Storage State: When the vehicle is in normal driving, the electronic lock 306 is energized and locks the latch structure 307, which tightens the entire obstacle avoidance rake assembly 3 upwards, so that the obstacle avoidance rake assembly 3 is tightly attached to the lower part of the chassis of the vehicle body 1 and completely stored and hidden. This does not change the original vehicle structure, does not affect the vehicle's passability, and does not increase driving wind resistance and energy consumption. The device is in standby mode.

[0062] S2. Emergency Trigger Braking: When the vehicle experiences extreme emergency situations such as complete brake failure, continuous acceleration on a long downhill slope, high-speed skidding and tail-swing, or impending rear-end collision, the driver can trigger the emergency avoidance program with one button on the controller 2 in the cab. The electric lock 306 is instantly energized and unlocked, and the latch structure 307 is disengaged. The rear end of the rake frame 301 falls rapidly under its own weight until the rake teeth 308 fully touch the ground. At the same time, the square iron section at the top of the electric lift 305 slides rapidly down the lift slide cylinder 302. After sliding into place, the one-way sliding clip 303 on the inner wall of the lift slide cylinder 302 automatically rebounds and engages with the right-angled triangular slot 304, completing a rigid one-way lock without any rebound or loosening throughout the process. Immediately, the two electric lifting devices 305 simultaneously started the lifting operation, gradually raising the rear of the vehicle, so that the weight of the entire vehicle was gradually transferred from the wheels to the hazard-avoiding rake assembly 3; as the load-bearing pressure increased, the high-strength rake teeth 308 gradually entered the road surface, forming a huge positive pressure and sliding friction with the road surface, generating a super strong reverse drag resistance, stabilizing and dragging the entire vehicle chassis, quickly offsetting the vehicle's driving inertia, forcing the out-of-control vehicle to decelerate smoothly and quickly until it came to a complete stop, preventing the danger from escalating.

[0063] S3. Hazard Resolution and Reset: After the hazard has been completely resolved and the vehicle has come to a stable stop, the electric lifter 305 is retracted and reset via controller 2. The locking limit of the one-way sliding block 303 is manually released, and the rear end of the rake frame 301 is raised. The locking structure 307 on the rake frame 301 is then re-engaged into the chassis electric lock 306 to complete the locking and fixing. After reset, the self-locking limit function of the one-way sliding block 303 is automatically restored, and the hazard avoidance rake assembly 3 is re-attached to the chassis and stored, restoring the vehicle to normal driving status. The device can be used repeatedly and is easy to maintain.

[0064] Example 1: Emergency Escape Implementation for Complete Brake Failure on a Long Downhill Slope in Mountainous Area

[0065] This embodiment is applicable to extreme conditions where heavy freight vehicles are driving on long downhill sections in mountainous areas, and the original vehicle's braking system experiences heat fade, complete brake failure, and the vehicle continues to accelerate out of control.

[0066] When the vehicle is in normal driving condition, the obstacle avoidance rake assembly 3 at the rear of the chassis of the vehicle body 1 is in a retracted standby state, the electric lock 306 is energized to lock the locking buckle structure 307, the rake frame 301 is tightly stored against the chassis, the electric lifter 305 is in a high-position retracted state, and the one-way sliding card 303 is separated from the card slot 304 and ready to go, without affecting the normal passage of the vehicle downhill.

[0067] When the vehicle travels on a continuous 5km downhill section, frequent braking causes the original brake pads to overheat and fail, resulting in complete brake failure. Under the influence of gravity, the vehicle continues to accelerate and cannot reduce its speed. The conventional vehicle stability system and active braking system completely fail. At this point, the driver immediately operates controller 2 inside the cab, outputting a hazard avoidance trigger signal with a single button press.

[0068] The controller 2 instantly controls the electric lock 306 to de-energize and unlock, the locking structure 307 quickly disengages and releases, the rear end of the rake frame 301 loses its locking constraint, and it quickly flips and falls downwards by its own gravity. The front end of the rake frame 301 is hinged to the chassis of the vehicle body 1 through the movable shaft to ensure that the falling posture is stable and without deviation, until the high-strength rake teeth 308 at the bottom of the rake frame 301 are completely in contact with the asphalt road surface.

[0069] During the descent of the rake frame 301, the two electric lifters 305 slide down synchronously along the lifter slide cylinder 302. The automatic rebound one-way sliding clip 303 on the inner wall of the lifter slide cylinder 302 automatically engages with the right-angled triangular slot 304 on the side wall of the electric lifter 305, forming a one-way irreversible mechanical self-locking structure. There is no rebound or loosening throughout the process, and the greater the force, the more secure the lock becomes.

[0070] After self-locking is completed, the electric lift 305 simultaneously starts the lifting operation, slowly raising the rear of the vehicle body 1 and transferring more than 60% of the vehicle's weight to the avoidance rake assembly 3. Under the pressure of the vehicle's own weight, the end-hardened rake teeth 308 stably penetrate the asphalt pavement surface, and combined with the 301 rake frame's 35° angled force-bearing structure, generate a huge reverse drag friction force, continuously counteracting the vehicle's downhill inertial acceleration force. The vehicle smoothly decelerates from an out-of-control high-speed state without rollover or fishtailing, and finally comes to a constant speed and slow stop, completely avoiding a major accident caused by loss of control on a long downhill slope.

[0071] After the vehicle comes to a complete stop, the control controller 2 causes the electric lifter 305 to retract and release the force, manually releases the one-way sliding latch 303 from the locking limit, raises the rear end of the rake frame 301, and re-engages the locking structure 307 into the electric lock 306 to lock and fix it. The device is then reset and stored, and can be reused.

[0072] Example 2: Emergency Avoidance Implementation for High-Speed ​​Sideslip and Tail-Swept Aspects on Wet and Slippery Roads (Rain, Snow, etc.)

[0073] This embodiment is applicable to extreme conditions where passenger vehicles are traveling at high speed on wet asphalt roads in rainy or snowy weather, and the vehicle suddenly skids, fishtails, or loses control, and conventional anti-skid and stabilization systems are unable to correct the attitude.

[0074] When the vehicle is in normal driving mode, the obstacle avoidance component 3 is completely stored under the chassis of the vehicle body 1, and is installed in a hidden manner. This does not increase wind resistance or affect the stability of the vehicle at high speeds. The electronic lock 306 is tightly engaged with the locking structure 307, and the device is in standby mode.

[0075] In rainy or snowy weather, roads become slippery. If a vehicle suddenly experiences tire slippage and significant body skidding while traveling at high speed, the ESC (Electronic Stability Control) system may fail to intervene, leading to loss of vehicle control and potentially causing lane obstruction, collisions, or rollovers. The driver can immediately trigger the emergency avoidance function with a single button press on controller 2.

[0076] The electronic lock 306 unlocks instantly, the rake frame 301 quickly sinks to the bottom due to gravity, the rake teeth 308 adhere to the slippery road surface, and the electric lift 305 slides down to complete the hard self-locking of the one-way sliding plate 303 and the slot 304. Subsequently, the electric lift 305 slightly raises the rear of the vehicle, using the weight of the entire vehicle to press the rake teeth 308 firmly against the road surface. In this embodiment, the rake teeth 308 adopt an axe-shaped structure design, which can form extremely strong grip on the slippery road surface and prevent the rake body from slipping.

[0077] By utilizing the centering drag resistance of the hazard avoidance rake assembly 3, the vehicle's loss of control posture is quickly corrected, suppressing tail-swing and sideslip deviation. It smoothly dissipates the vehicle's lateral and longitudinal inertia, allowing the out-of-control vehicle to quickly return to normal, its speed to decrease steadily, and ultimately to a smooth, low-speed stop. Compared to the lock-up and slippage problems that are prone to occur with conventional braking, this device relies on mechanical engagement braking, significantly improving braking stability on slippery surfaces and completely resolving the danger of high-speed loss of control on slippery roads.

[0078] Example 3: Emergency Evacuation Implementation for Rear-End Collision on Gravel and Muddy Roads

[0079] This embodiment applies to emergency situations where freight vehicles are traveling on gravel, mud, or unpaved roads, and there are sudden obstacles or slow-moving vehicles ahead, resulting in a significant increase in the original vehicle's braking distance and an imminent rear-end collision.

[0080] Unpaved roads have loose surfaces and extremely low friction, resulting in a significant reduction in the braking efficiency of conventional vehicles. Emergency braking can easily lead to wheel slippage and brake failure, failing to effectively shorten the braking distance and posing a high risk of rear-end collisions. When the vehicle is in normal driving condition, the obstacle avoidance rake assembly 3 is properly stored and does not affect the vehicle's ability to pass through complex road surfaces.

[0081] When a sudden danger occurs ahead and it is anticipated that conventional braking will not be able to stop the vehicle in time, the driver can trigger controller 2 with one button in advance. The electric lock 306 will quickly unlock and lower the rake, the rake frame 301 will quickly land, and the electric lift 305 will quickly slide down and lock itself, instantly completing the preparation for hazard avoidance.

[0082] The electric lifter 305 raises the rear of the vehicle, and the rake teeth 308, under the weight of the vehicle, cut directly into the gravel and muddy road surface, overcoming the low friction limitations of the loose surface layer and forming stable, high mechanical drag resistance, forcing the vehicle to decelerate rapidly. This device does not rely on tire-road friction; it brakes directly through the hard engagement of the rake teeth 308 with the ground, significantly shortening emergency braking distance on unpaved roads and effectively avoiding rear-end collisions.

[0083] After the emergency is resolved and the vehicle comes to a complete stop, the device can be quickly and manually reset and stored without structural damage or the need to replace parts. It can be repeatedly adapted to various complex road conditions for emergency use, and the device is extremely durable and environmentally adaptable.

[0084] General technical effects of the three sets of embodiments

[0085] The three sets of implementation examples respectively cover three high-frequency extreme dangers: brake failure on long downhill slopes, wet and slippery high-speed sideslip, and emergency avoidance on unpaved roads. All of them can achieve the following: 1. Completely independent of the original vehicle braking system, it can still work normally even if all the original vehicle braking structures fail, forming the ultimate safety net; 2. High reliability of mechanical one-way self-locking, no failure or rebound under extreme conditions; 3. Braking effect is not limited by road conditions, and it is suitable for emergency avoidance in all scenarios; 4. The device can be recycled and reused, and its installation does not affect the normal driving performance of the vehicle.

[0086] The examples provided in this invention are not intended to limit the implementation. Those skilled in the art will recognize that various variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations, and any obvious variations or modifications derived therefrom are still within the scope of this invention.

Claims

1. A vehicle emergency avoidance device, characterized in that, It includes a vehicle body (1), a controller (2), and a hazard avoidance rake assembly (3); the controller (2) is installed in the driver's cab of the vehicle body (1); the hazard avoidance rake assembly (3) is installed on the lower part of the vehicle chassis at the rear of the vehicle body (1); The hazard-avoiding rake assembly (3) includes a rake frame (301), a lifting device slide (302), a one-way sliding block (303), an electric lifting device (305), an electric lock (306), a locking structure (307), and rake teeth (308); the front end of the rake frame (301) is hinged to the chassis of the vehicle body (1), the upper end of the lifting device slide (302) is hinged to the chassis of the vehicle body (1), and the electric lifting device (305) is slidably inserted into the lifting device slide. Inside the cylinder (302), the side wall of the electric lifter (305) is provided with a slot (304), and the one-way sliding clip (303) is provided on the inner wall of the lifter cylinder (302) and is locked in one direction with the slot (304); the rake frame (301) is respectively equipped with an electric lifter (305), a locking structure (307) and rake teeth (308); the chassis of the vehicle body (1) is provided with an electric control lock (306) that matches the locking structure (307); The controller (2) is electrically connected to the electric lift (305) and the electric lock (306) and connected to the vehicle power supply.

2. The vehicle emergency avoidance device according to claim 1, characterized in that, The vehicle body (1) is a non-load-bearing vehicle body.

3. The vehicle emergency avoidance device according to claim 1, characterized in that, The front end of the rake frame (301) is tilted upwards, forming a 135° angled force-bearing structure with the rear end of the rake frame (301).

4. The vehicle emergency avoidance device according to claim 1, characterized in that, The rake frame (301) has 4-8 high-strength wear-resistant alloy steel rake teeth (308) that can be detachably and evenly arranged on the lower side. The ends of the rake teeth (308) are hardened.

5. The vehicle emergency avoidance device according to claim 4, characterized in that, The rake teeth (308) have an axe-shaped structure, and an elliptical hole is provided through the front of the rake teeth (308).

6. The vehicle emergency avoidance device according to claim 1, characterized in that, Two electric lifters (305) are installed side by side on the upper rear end of the rake frame (301); the upper end of the electric lifter (305) is a fixed square iron section, and a right-angled triangular slot (304) is opened on the side wall of the square iron section. One right-angled side of the slot (304) extends along the axial direction of the square iron section, and the other right-angled side is located on the upper part of the square iron section, forming an inverted triangle arrangement.

7. The vehicle emergency avoidance device according to claim 1, characterized in that, The inner wall of the lifting device slide (302) is evenly arranged with 2-4 automatic spring-loaded locking tongue-shaped one-way sliding clips (303). The one-way sliding clips (303) are matched and engaged with the right-angled triangular slots (304), allowing the electric lifting device (305) to slide downward in one direction only. During the downward movement, the device is locked in place step by step and cannot be retracted, forming a one-way irreversible self-locking structure.

8. The vehicle emergency avoidance device according to claim 1, characterized in that, The hazard avoidance rake assembly (3) is independent of the vehicle's original ABS, ESC, and active braking system, serving as the ultimate emergency braking backup structure under extreme vehicle conditions.

9. A vehicle emergency avoidance scheme, applied to the vehicle emergency avoidance device according to any one of claims 1-8, characterized in that, The work includes the following steps: S1, standby storage state: The electric lock (306) is powered on and locks the latch structure (307), tightening the entire hazard avoidance rake assembly (3) upwards, so that the hazard avoidance rake assembly (3) is tightly stored in the lower part of the chassis of the vehicle body (1), and the device is in standby state, which does not affect the vehicle's passability, wind resistance and normal driving energy consumption. S2, Emergency Trigger Braking: When the vehicle experiences brake failure, loss of control on a long downhill slope, body skidding and tail swing, or sudden rear-end collision, the driver can trigger the electric lock (306) with one button via the cab controller (2). The electric lock (306) is instantly energized to unlock the latch structure (307). The rear end of the rake frame (301) falls rapidly under its own weight until the rake teeth (308) contact the ground. At the same time, the electric lift (305) slides rapidly down the lift cylinder (302), and the one-way sliding plate (303) automatically engages in the right-angled triangular slot (304), completing a hard one-way irreversible lock. Then, the electric lift (305) starts the lifting operation, gradually raising the rear of the vehicle and transferring the weight of the entire vehicle from the wheels to the emergency rake assembly (3). Relying on the weight of the entire vehicle, the rake teeth (308) bite into the road surface, generating a high-intensity reverse drag friction force, forcing the out-of-control vehicle to decelerate smoothly until it comes to a complete stop. S3, Emergency Resettlement: After the emergency is resolved, control the electric lift (305) to retract and reset, manually release the locking limit of the one-way sliding block (303), raise the rear end of the rake frame (301) upward, and re-lock the locking structure (307) into the electric lock (306) to complete the locking. The emergency rake assembly (3) is reset and fits against the chassis for storage, restoring the standby driving state, and can be reused repeatedly.

Images