A fast-response guardrail, system, and method suitable for low-grade highways in mountainous areas

Abstract

The present invention discloses a fast-response guardrail, system, and method suitable for low-grade roads in mountainous areas. An instantaneous ejector is provided at the bottom of a snap-on component. The instantaneous ejector can eject the guardrail plate more quickly, thereby increasing the opening speed of the flexible protective net and intercepting vehicles more quickly to prevent them from running off the road or overturning, thereby ensuring vehicle safety to the greatest extent possible.

Description

Technical Field

[0001] The present invention relates to the field of road safety technology, and in particular to a fast-response guardrail, system and method suitable for low-grade roads in mountainous areas. Background Art

[0002] In recent years, low-grade roads in mountainous areas, especially long downhill sections, have experienced frequent traffic accidents due to their low road grade, poor horizontal and vertical indicators, and serious road damage. In minor cases, the car is damaged, causing traffic jams; in serious cases, the car overturns, runs off the road and rolls down the slope, causing major casualties. This situation is common on mountain roads.

[0003] The main reasons for this situation are: 1) Mountain roads are restricted by terrain conditions, with poor horizontal and vertical indicators and low design speeds, and passing vehicles often exceed the design speeds; 2) The roads are narrow and visibility is limited, making it impossible to judge road conditions in advance, especially on bends where it is very easy to run off the road; 3) Mountain roads are generally long and winding downhill, and large trucks have great inertia. When encountering rainy or snowy weather, the braking effect is poor and they are forced to run off the road; 4) The road surface width of low-grade roads is insufficient.

[0004] In order to solve the above situation, guardrails are generally installed on one side of the mountain road.

[0005] Current guardrails typically consist of upright posts and guardrail panels above them, constructed from steel plates. These panels, being rigid materials, are also rigidly connected. If a car loses control and collides with the guardrail, the guardrail can prevent the car from running off the road. However, experience has shown that these guardrail panels offer no cushioning effect. Under the powerful impact of a high-speed, out-of-control car, they often break, causing the car to veer off the roadway, resulting in fatalities. Cracked guardrails can cause more serious injuries and fail to effectively prevent the car from running off the road. Furthermore, guardrails made from steel plates can become porous, losing their resistance to pressure and impact, resulting in a short service life.

[0006] In addition, the existing guardrails are set at a high height and are evenly distributed along one side of the mountain road. When the road surface is relatively narrow, it is easy to cause a greater sense of oppression to the driver, thereby affecting the driver's driving safety. Summary of the Invention

[0007] The purpose of the present invention is to provide a fast-response guardrail, system and method suitable for low-grade roads in mountainous areas. It aims to solve the technical problems in the prior art that the guardrail panels have no buffering function, which will aggravate the occurrence of accidents and losses under the strong impact of moving vehicles, and to improve the ejection speed of the fast-response guardrail.

[0008] The present invention is achieved through the following technical solutions:

[0009] A quick-response guardrail suitable for low-grade roads in mountainous areas, comprising connecting posts, guardrail panels, snap-fit ​​components, and a flexible protective net;

[0010] The connecting column is buried at the side of the road where a guardrail is required, and a slide rail is provided on the surface of the connecting column;

[0011] The guardrail plate is located between the adjacent connecting columns, and both ends of the guardrail plate are respectively connected to the surface of the connecting columns.

[0012] The slide rail connection on the

[0013] The guardrail plate is divided into an upper guardrail plate, a middle guardrail plate and a lower guardrail plate, the width of the upper guardrail plate and the lower guardrail plate are equal, and the width of the middle guardrail plate is greater than the width of the upper guardrail plate or the lower guardrail plate;

[0014] The snap component is arranged at the bottom of the upper guardrail plate, and an instantaneous ejector is also provided at the bottom of the snap component. The instantaneous ejector and the flexible protective net are both arranged between the snap component and the lower guardrail plate. When the quick-response guardrail is not activated, the snap component is in a locked state, and the instantaneous ejector and the flexible protective net are both in a telescoping state.

[0015] Furthermore, a slider is provided on the upper guardrail plate, and the slider is mounted on the slide rail, and is used for the upper guardrail plate to slide along the slide rail direction;

[0016] The connecting column and the upper guardrail plate are also provided with mutually cooperating limiting components.

[0017] Furthermore, the limiting member is provided with a card point at the upper end of the connecting column, and convex points are provided on the left and right ends of the upper guardrail plate respectively;

[0018] The limiting component is used to fix the position of the upper guardrail plate after the quick response guardrail is activated.

[0019] Furthermore, the instantaneous ejector adopts a spring. When the quick-response guardrail is not activated, the snap component locks the spring, so that the spring is in a compressed state.

[0020] Furthermore, the ejection speed of the instantaneous ejector is 0.1S.

[0021] Furthermore, the height of the connecting column is 5m, and the connecting column is a box-shaped section with internal ribs.

[0022] Furthermore, the middle guardrail plate is a corrugated steel plate, and the middle guardrail plate is 0.5m wider than the upper guardrail plate or the lower guardrail plate.

[0023] Furthermore, the quick-response guardrail further comprises a control device, an infrared projector and an intelligent alarm device, wherein the control device, the infrared projector and the intelligent alarm device are installed between the upper guardrail plate and the lower guardrail plate;

[0024] The control device, the infrared projector and the intelligent alarm device are electrically connected.

[0025] The present invention also provides a fast-response guardrail system suitable for low-grade roads in mountainous areas, comprising a fast-response guardrail and a server;

[0026] The infrared projector is used to project infrared rays onto the middle guardrail plate;

[0027] The server comprises:

[0028] The data processing module is used to preset and store the contact range value between the moving vehicle and the protruding middle guardrail plate;

[0029] The judgment module is used to judge whether the contact area between the moving vehicle and the protruding middle guardrail plate exceeds the preset value in the data processing module. If the contact area between the moving vehicle and the protruding middle guardrail plate exceeds the preset value in the data processing module, the judgment module sends a control unlocking instruction to the control device and the intelligent alarm device;

[0030] After receiving the unlocking control instruction, the control device controls the locking member to unlock, and the instantaneous ejector performs an ejection movement on the upper guardrail plate, causing the upper guardrail plate to slide along the direction of the slide rail and open the flexible protective net;

[0031] The intelligent alarm device is used to send alarm information to relevant units and issue an alarm to remind passing vehicles.

[0032] Furthermore, the judgment module includes:

[0033] The first judgment module is used to judge whether the moving vehicle contacts the protruding middle guardrail plate, and if the moving vehicle contacts the protruding middle guardrail plate, the second judgment step is performed;

[0034] The second judgment module is used to judge whether the deformation of the middle guardrail panel exceeds 0.5m or whether the moving vehicle directly damages the surface of the upper guardrail panel and the lower guardrail panel or the moving vehicle touches the infrared ray projected by the infrared projector. If the deformation of the middle guardrail panel exceeds 0.5m or the moving vehicle directly damages the surface of the upper guardrail panel and the lower guardrail panel or the moving vehicle touches the infrared ray projected by the infrared projector, the second judgment module will send a control unlocking command to the control device and the intelligent alarm device.

[0035] The present invention also provides a quick-response guardrail method applicable to low-grade roads in mountainous areas, comprising the following steps:

[0036] S1: A quick-response guardrail is installed on the outside of the mountain road. When the quick-response guardrail is not activated, the instantaneous ejector and the flexible protective net are in a telescoping state;

[0037] S2: Using an infrared projector to project the infrared ray onto the middle guardrail plate;

[0038] S3: Presetting a contact range value between the moving vehicle and the protruding middle guardrail in the data processing module;

[0039] S4: using the judgment module to judge whether the contact area between the moving vehicle and the protruding middle guardrail plate exceeds the preset value in the data processing module; if the contact area between the moving vehicle and the protruding middle guardrail plate exceeds the preset value in the data processing module, sending a control unlocking instruction to the control device and the intelligent alarm device;

[0040] S5: After receiving the unlocking control instruction, the control device controls the locking member to unlock, and the instantaneous ejector performs an ejection movement on the upper guardrail plate, causing the upper guardrail plate to slide along the direction of the slide rail, thereby opening the flexible protective net;

[0041] S6: After receiving the control instruction sent by the judgment module, the intelligent alarm device sends alarm information to relevant units and sounds an alarm to remind passing vehicles.

[0042] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0043] The present invention provides a quick-response guardrail, system and method suitable for low-grade roads in mountainous areas. When a moving vehicle hits a protruding middle guardrail plate, the quick-response guardrail is activated, the snap component at the bottom of the upper guardrail plate is unlocked, and the instantaneous ejector opens to instantly move the upper guardrail plate upward, ejecting the upper guardrail plate, and the upper guardrail plate slides along the direction of the slide rail on the surface of the connecting column. The flexible protective net is opened, and the flexible protective net has good buffering force, rebound force, plasticity and impact resistance, which can effectively prevent and reduce the risk of running off the road, overturning or other safety accidents caused by strong impact on the moving vehicle; at the same time, the present invention adopts a liftable upper guardrail plate, which can effectively avoid the excessive height of the guardrail plate causing increased driving pressure on the already narrow mountain roads, thereby affecting driving safety; and the present invention provides an instantaneous ejector at the bottom of the snap component, which can eject the upper guardrail plate faster, thereby increasing the opening speed of the flexible protective net, and can intercept the vehicle more quickly to avoid running off the road or overturning, thereby ensuring vehicle safety to the greatest extent.

[0044] The present invention is a fast response guardrail, system and method suitable for low-grade roads in mountainous areas, which adopts a liftable upper guardrail plate. When the fast response guardrail is not activated, the instantaneous ejector and the flexible protective net are in a telescoping state.

[0045] To increase the service life of the quick response guardrail and reduce the use cost of the quick response guardrail. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0047] Figure 1 It is a side view of the present invention.

[0048] Figure 2 It is a schematic diagram of the structure of the present invention when it is not started.

[0049] Figure 3 It is a structural schematic diagram of the present invention when it is started.

[0050] Reference numerals and corresponding component names:

[0051] 1-Connecting column; 11-Slide rail; 21-Upper guardrail; 22-Middle guardrail; 23-Lower guardrail; 3-Flexible protective net; 4-Infrared projector; 5-Intelligent alarm device; 6-Snap component; 7-Instantaneous ejector. DETAILED DESCRIPTION

[0052] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0053] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that these specific details are not necessarily required to practice the present invention. In other instances, well-known structures, circuits, materials, or methods are not described in detail to avoid obscuring the present invention.

[0054] Throughout this specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present invention. Therefore, appearances of the phrases "one embodiment," "an embodiment," "an example," or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combinations and / or subcombinations. Furthermore, it will be understood by those of ordinary skill in the art that the figures provided herein are for illustrative purposes only and are not necessarily drawn to scale. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0055] [Example]

[0056] like Figure 1 As shown, a fast-response guardrail suitable for low-grade roads in mountainous areas includes a connecting column 1, a guardrail plate, a snap-fit ​​component 6, and a flexible protective net 3;

[0057] The connecting column 1 is buried at the side of the road where the guardrail is needed, and a slide rail 11 is provided on the surface of the connecting column 1;

[0058] The guardrail plate is located between adjacent connecting columns 1, and both ends of the guardrail plate are respectively connected to the slide rails 11 on the surface of the connecting columns;

[0059] The guardrail is divided into an upper guardrail 21, a middle guardrail 22 and a lower guardrail 23. The widths of the upper guardrail 21 and the lower guardrail 23 are equal, and the width of the middle guardrail 22 is greater than the width of the upper guardrail 21 or the lower guardrail 23.

[0060] The snap-fit ​​member 6 is arranged at the bottom of the upper guardrail plate 21, and an instantaneous ejector 7 is also provided at the bottom of the snap-fit ​​member 6. The instantaneous ejector 7 and the flexible protective net 3 are both arranged between the snap-fit ​​member 6 and the lower guardrail plate 23. When the quick-response guardrail is not activated, the snap-fit ​​member 6 is in a locked state, and the instantaneous ejector 7 and the flexible protective net 3 are both in a telescoping state.

[0061] Furthermore, the instantaneous ejector 7 uses a spring. When the quick-response guardrail is not activated, the snap member 6 locks the spring, putting the spring in a compressed state.

[0062] Furthermore, the ejection speed of the instantaneous ejector 7 is 0.1S.

[0063] like Figure 1 、 Figure 2As shown, a snap component 6 is provided at the bottom of the upper guardrail plate 21, and an instantaneous ejector 7 is provided below the snap component 6. When the quick-response guardrail is not activated, the instantaneous ejector 7 is in a compressed state; when the quick-response guardrail is activated, the snap component 6 at the bottom of the upper guardrail plate 21 is unlocked, and the instantaneous ejector 7 opens and instantly moves the upper guardrail plate 21 upward, ejecting the upper guardrail plate 21. The upper guardrail plate 21 slides along the direction of the slide rail on the surface of the connecting column, and the flexible protective net 3 between the upper and lower guardrail plates is opened. By arranging the instantaneous ejector 7 and the snap component 6, the moving speed of the upper guardrail plate 21 can be increased, and the vehicle can be intercepted more quickly to avoid running off the road or overturning, thereby ensuring vehicle safety to the greatest extent.

[0064] Among them, the connecting columns are set on the outside of the highway, and one is set every 10 meters; the length of the middle guardrail plate 22 is equal to the distance between adjacent connecting columns 1; when the quick-response guardrail is not activated, the guardrail plate of the entire quick-response guardrail is only 1~1.5m high, which will not affect the road driving on mountain roads, and there is no driving pressure caused by the use of high guardrails, thereby improving driving safety.

[0065] Furthermore, a slider is provided on the upper guardrail plate 21 , which is installed on the slide rail 11 and is used for the upper guardrail plate 21 to slide along the slide rail 11 ; and mutually cooperating limiting components are also provided on the connecting column 1 and the upper guardrail plate 21 .

[0066] Furthermore, the limiting component is to set a card point at the upper end of the connecting column 1, and set a protrusion on the left and right ends of the upper guardrail plate 21; the limiting component is used to fix the position of the upper guardrail plate 21 after the quick response guardrail is activated.

[0067] like Figure 2 、 Figure 3 As shown, the quick-response guardrail adopts a liftable upper guardrail plate 21. Since the instantaneous ejector 7 and the flexible protective net 3 are in a telescoping state when the quick-response guardrail is not activated, the service life of the quick-response guardrail can be increased and the use cost of the quick-response guardrail can be reduced. At the same time, mutually cooperating limiting components are set on the connecting column 1 and the upper guardrail plate 21, and a snap component 6 is also set at the bottom of the upper guardrail plate 21, which can effectively control the upper guardrail plate 21 to quickly slide out of the connecting column 1 when sliding, thereby affecting the working efficiency of the quick-response guardrail.

[0068] The limiting member in this solution can also be fixed in a snap-fit ​​manner or other manners.

[0069] In this solution, the locking spring of the clip component and the control method of the control device are all existing technologies. The invention of this solution is that the clip component, spring and flexible protective net are set on the two columns. When the quick-response guardrail is started, the clip component 6 at the bottom of the upper guardrail plate 21 is unlocked, and the instantaneous ejector 7 opens and instantly moves the upper guardrail plate 21 upward, ejecting the upper guardrail plate 21. The upper guardrail plate 21 slides along the direction of the slide rail on the surface of the connecting column 1, and the flexible protective net 3 is opened. The flexible protective net 3 has good buffering force, rebound force, plasticity and impact resistance, and can effectively prevent and reduce the impact of the moving vehicle under strong

[0070] Under the impact of the vehicle, it may cause the vehicle to run off the road, roll over or other safety accidents; at the same time, the present invention adopts a liftable upper guardrail board 21, which can effectively avoid the excessive height of the guardrail board on the narrow mountain road surface aggravating the driving pressure, thereby affecting driving safety; and the present invention provides an instantaneous ejector 7 at the bottom of the buckle component 6, which can eject the upper guardrail board 21 faster, thereby increasing the opening speed of the flexible protective net 3, and can intercept the vehicle more quickly to avoid running off the road or rolling over, thereby ensuring vehicle safety to the greatest extent.

[0071] Furthermore, the height of the connecting column 1 is 5m, and the connecting column 1 is a box-shaped section with internal ribs.

[0072] Furthermore, the middle guardrail plate 22 is a corrugated steel plate, and the middle guardrail plate 22 is 0.5 m wider than the upper guardrail plate 21 or the lower guardrail plate 23 .

[0073] Furthermore, the quick-response guardrail also includes a control device, an infrared projector 4 and an intelligent alarm device 5, which are installed between the upper guardrail plate 21 and the lower guardrail plate 23; the control device, the infrared projector 4 and the intelligent alarm device 5 are electrically connected.

[0074] Furthermore, it includes a quick-response guardrail and a server; an infrared projector 4 is used to project infrared rays onto the middle guardrail plate 22; the server includes: a data processing module for presetting and storing the contact range value between the traveling vehicle and the protruding middle guardrail plate; a judgment module is used to judge whether the contact area between the traveling vehicle and the protruding middle guardrail plate 22 exceeds the preset value in the data processing module. If the contact area between the traveling vehicle and the protruding middle guardrail plate 22 exceeds the preset value in the data processing module, the judgment module sends a control instruction to the control device and the intelligent alarm device 5; after the control device receives the unlocking control instruction, it controls the snap component 6 to unlock, and the instantaneous ejector 7 performs a catapult movement on the upper guardrail plate 21, so that the upper guardrail plate 21 slides along the direction of the slide rail and opens the flexible protective net 3; the intelligent alarm device 5 is used to send alarm information to relevant units and issue an alarm to remind passing vehicles.

[0075] Furthermore, the judgment module includes: a first judgment module for judging whether the moving vehicle is in contact with the protruding middle guardrail plate 22, and if the moving vehicle is in contact with the protruding middle guardrail plate 22, a second judgment is performed; a second judgment module is used to judge whether the deformation of the middle guardrail plate 22 exceeds 0.5m or whether the moving vehicle directly damages the surface of the upper guardrail plate 21 and the lower guardrail plate 23 or the moving vehicle touches the infrared ray projected by the infrared projector 4. If the deformation of the middle guardrail plate 22 exceeds 0.5m or the moving vehicle directly damages the surface of the upper guardrail plate 21 and the lower guardrail plate 23 or the moving vehicle touches the infrared ray projected by the infrared projector 4, the second judgment module will send a control instruction to the control device and the intelligent alarm device 5.

[0076] The working principle of the present invention comprises the following steps:

[0077] S1: A quick-response guardrail is installed on the outside of a mountain road. When the quick-response guardrail is not activated, the instantaneous ejector 7 and the flexible protective net 3 are in a telescoping state;

[0078] S2: Use the infrared projector 4 to project infrared rays onto the middle guardrail plate 22;

[0079] S3: Presetting the contact range value between the moving vehicle and the protruding middle guardrail plate 22 in the data processing module;

[0080] S4: Using the judgment module to judge whether the contact area between the moving vehicle and the protruding middle guardrail plate 22 exceeds the preset value in the data processing module, if the contact area between the moving vehicle and the protruding middle guardrail plate 22 exceeds the preset value in the data processing module, a control instruction is sent to the control device and the intelligent alarm device 5;

[0081] S5: After receiving the unlocking control command, the control device controls the latch member 6 to unlock, and the instantaneous ejector 7 ejects the upper guardrail plate 21, causing the upper guardrail plate 21 to slide along the direction of the slide rail, thereby opening the flexible protective net 3;

[0082] S6: After receiving the control instruction sent by the judgment module, the intelligent alarm device 5 sends alarm information to relevant units and sounds an alarm to remind passing vehicles.

[0083] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-response guardrail suitable for low-grade roads in mountainous areas, characterized by: It comprises a connecting column (1), a guardrail plate, a snap-fit ​​component (6) and a flexible protective net (3); The connecting column (1) is buried at a location where a guardrail is required on the side of a road, and a slide rail (11) is provided on the surface of the connecting column (1); the guardrail plate is located between adjacent connecting columns (1), and both ends of the guardrail plate are respectively connected to the slide rails (11) on the surface of the connecting column; The guardrail plate is divided into an upper guardrail plate (21), a middle guardrail plate (22) and a lower guardrail plate (23); the widths of the upper guardrail plate (21) and the lower guardrail plate (23) are equal, and the width of the middle guardrail plate (22) is greater than the width of the upper guardrail plate (21) or the lower guardrail plate (23); The snap-fitting member (6) is arranged at the bottom of the upper guardrail plate (21), and an instantaneous ejector (7) is also arranged at the bottom of the snap-fitting member (6), and the instantaneous ejector (7) and the flexible protective net (3) are both arranged between the snap-fitting member (6) and the lower guardrail plate (23); When the quick-response guardrail is not activated, the snap-fit ​​component (6) is in a locked state, and the instantaneous ejector (7) and the flexible protective net (3) are both in a telescoping state; When the contact area between the moving vehicle and the protruding middle guardrail plate (22) exceeds a preset value, the buckle member (6) at the bottom of the upper guardrail plate (21) is unlocked, and the instantaneous ejector (7) is opened to instantly move the upper guardrail plate (21) upward, ejecting the upper guardrail plate (21), and the upper guardrail plate (21) slides along the direction of the slide rail on the surface of the connecting column (1), thereby opening the flexible protective net (3); The quick-response guardrail further comprises a control device, an infrared projector (4), and an intelligent alarm device (5), wherein the control device, the infrared projector (4), and the intelligent alarm device (5) are installed between the upper guardrail plate (21) and the lower guardrail plate (23); The control device, the infrared projector (4), and the intelligent alarm device (5) are electrically connected. The infrared projector (4) is used to project infrared rays onto the middle guardrail plate (22). When a moving vehicle touches the infrared rays projected by the infrared projector (4), a control unlocking instruction is sent to the control device and the intelligent alarm device (5).

2. The fast-response guardrail suitable for low-grade roads in mountainous areas according to claim 1 is characterized in that: The upper guardrail plate (21) is further provided with a slider, which is mounted on the slide rail (11) and is used for the upper guardrail plate (21) to slide along the slide rail (11); The connecting column (1) and the upper guardrail plate (21) are also provided with mutually cooperating limiting components.

3. The fast-response guardrail suitable for low-grade roads in mountainous areas according to claim 2 is characterized in that: The limiting member is provided with a card point at the upper end of the connecting column (1), and convex points are respectively provided on the left and right ends of the upper guardrail plate (21); The limiting member is used to fix the position of the upper guardrail plate (21) after the quick response guardrail is activated.

4. The fast-response guardrail suitable for low-grade roads in mountainous areas according to claim 1 is characterized in that: The instantaneous ejector (7) uses a spring, and when the quick-response guardrail is not activated, the snap-fit ​​component (6) locks the spring, placing the spring in a compressed state.

5. The fast-response guardrail suitable for low-grade roads in mountainous areas according to claim 1 is characterized in that: The ejection speed of the instantaneous ejector (7) is 0.1S.

6. The fast-response guardrail suitable for low-grade roads in mountainous areas according to claim 1 is characterized in that: The middle guardrail plate (22) is a corrugated steel plate, and the middle guardrail plate (22) is 0.5m wider than the upper guardrail plate (21) or the lower guardrail plate (23).

7. A fast-response guardrail system suitable for low-grade roads in mountainous areas, characterized by: comprising a fast-response guardrail and a server as described in any one of claims 1 to 6; The server comprises: The data processing module is used to preset and store the contact range value between the moving vehicle and the protruding middle guardrail plate; The judgment module is used to judge whether the contact area between the running vehicle and the protruding middle guardrail plate (22) exceeds the preset value in the data processing module. If the contact area between the running vehicle and the protruding middle guardrail plate (22) exceeds the preset value in the data processing module, the judgment module sends a control unlocking instruction to the control device and the intelligent alarm device (5); After receiving the control unlocking instruction, the control device controls the locking member (6) to unlock, and the instantaneous ejector (7) ejects the upper guardrail plate (21), causing the upper guardrail plate (21) to slide along the direction of the slide rail, thereby opening the flexible protective net (3); The intelligent alarm device (5) is used to send alarm information to relevant units and issue an alarm to remind passing vehicles.

8. The fast-response guardrail system for low-grade roads in mountainous areas according to claim 7 is characterized in that: The judgment module includes: The first judgment module is used to judge whether the traveling vehicle contacts the protruding middle guardrail plate (22); if the traveling vehicle contacts the protruding middle guardrail plate (22), the second judgment step is performed; The second judgment module is used to judge whether the moving vehicle touches the infrared light projected by the infrared projector (4); when the moving vehicle touches the infrared light projected by the infrared projector (4), the second judgment module sends a control unlocking instruction to the control device and the intelligent alarm device (5).

9. A fast-response guardrail method suitable for low-grade roads in mountainous areas, characterized in that: The following steps are involved: S1: Installing a quick-response guardrail as claimed in any one of claims 1 to 6 on the outside of a mountain road, wherein when the quick-response guardrail is not activated, the instantaneous ejector (7) and the flexible protective net (3) are in a telescoping state; S2: using an infrared projector (4) to project the infrared rays onto the middle guardrail plate (22); S3: Presetting a contact range value between the moving vehicle and the protruding middle guardrail plate (22) in a data processing module; S4: using a judgment module to judge whether the contact area between the traveling vehicle and the protruding middle guardrail plate (22) exceeds a preset value in the data processing module; if the contact area between the traveling vehicle and the protruding middle guardrail plate (22) exceeds the preset value in the data processing module, sending a control unlocking instruction to the control device and the intelligent alarm device (5); S5: After receiving the control unlocking instruction, the control device controls the locking member (6) to unlock, and the instantaneous ejector (7) ejects the upper guardrail plate (21), causing the upper guardrail plate (21) to slide along the direction of the slide rail, thereby opening the flexible protective net (3); S6: After receiving the unlocking control command sent by the judgment module, the intelligent alarm device (5) sends an alarm message to the relevant units and issues an alarm to remind passing vehicles.

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