Protective barrier for road bridge and tunnel engineering

Abstract

The utility model discloses a protective barrier for road bridge and tunnel engineering, which relates to the technical field of protective barriers and comprises a vertical column, a second upper column is arranged on one side of the vertical column, a second lower column is arranged at the bottom end of one side of the vertical column, and a first upper column is arranged at one end of the second upper column. A first lower column is arranged at one end of the second lower column, and a plurality of mounting cylinders are arranged at the bottom of the second upper column and the bottom of the first upper column respectively. According to the protective barrier for the road, bridge and tunnel engineering, when one side of the mounting cylinder is impacted by an automobile, the impact rod impacts solid sodium azide in the protective cylinder, the solid sodium azide is subjected to decomposition reaction when being impacted violently, so that the solid sodium azide is quickly decomposed to generate a large amount of nitrogen, and the nitrogen is fully absorbed by the impact rod. The nitrogen is inflated into the air bag through the base, so that the air bag continues to expand outwards, the expanded air bag can buffer impact of the automobile and can protect pedestrians on the other side from being hurt, and the effect of protecting the pedestrians and the automobile is achieved.

Description

Technical Field

[0001] This utility model relates to the field of guardrail technology, and in particular to a guardrail for road, bridge and tunnel engineering. Background Technology

[0002] Sodium azide is an inorganic compound mainly composed of sodium and azide ions. It is a white crystalline solid commonly used in explosives and gas generators. When subjected to impact, heat, or other stimuli, sodium azide can rapidly decompose, releasing a large amount of nitrogen gas. This reaction is due to the instability of azide ions. During the decomposition process, sodium azide rapidly transforms into nitrogen gas and other substances. The generated nitrogen gas has a large volume and high pressure, and can release a large amount of energy in a short time. It is widely used in fields such as automotive airbags to provide rapid protection.

[0003] When a car goes out of control and hits a guardrail, it may not only damage the guardrail but also cause serious injury to nearby pedestrians. Guardrails are designed to protect the safety of pedestrians and vehicles. However, once hit, the guardrails may deform or break and lose their original protective function. Out-of-control vehicles or falling guardrails may directly crash onto the sidewalk, endangering the lives of pedestrians. Damaged guardrails can also cause traffic chaos, increase the risk of accidents, and affect overall traffic safety. Therefore, ordinary guardrails cannot meet the actual needs. Utility Model Content

[0004] This utility model discloses a protective railing for road, bridge and tunnel engineering, aiming to solve the technical problems that railings may deform or break and lose their original protective function, out-of-control vehicles or falling railings may directly rush onto the sidewalk, endangering the lives of pedestrians, and damaged protective railings may also cause traffic chaos, increase the risk of accidents and affect overall traffic safety.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A guardrail for road, bridge, and tunnel engineering includes a post, a second upper post on one side of the post, a second lower post at the bottom of one side of the post, a first upper post at one end of the second upper post, and a first lower post at one end of the second lower post. Multiple mounting cylinders are respectively provided at the bottom of the second and first upper posts. A mounting cover is provided on the upper surface of the second upper post. A base is inserted into the top of each mounting cylinder. An airbag is fixedly connected to the bottom of the base. A protective cylinder is fixedly connected to the top of the base. Mounting frames are respectively provided on the inner walls of the first and second upper posts near the sides of the protective cylinders. A mounting rod is slidably connected to the top of each mounting frame. A baffle is fixedly connected to one end of each mounting rod, and a buffer spring is sleeved on one end of each mounting rod. A fixing frame is fixedly connected to the top of the inner walls of the first and second upper posts. An impact rod is slidably connected to the bottom of the fixing frame, and an impact spring is sleeved on one end of the impact rod.

[0007] The mounting cylinder is provided with protective plates on both sides, and a locking block is provided on one edge of each protective plate. A locking strip is provided on the other edge of each protective plate. A locking shaft is provided in the middle of one side of the airbag. The top and bottom of the locking shaft are provided with locking grooves.

[0008] One end of the clip is inserted into the slot, and the protective plate and the mounting cylinder are inserted into both sides of the mounting cylinder to seal the internal space of the mounting cylinder. The clips are respectively inserted into one side of the mounting cylinder. The inside of the protective cylinder is filled with solid sodium azide, and a metal tin layer is provided on the top of the protective cylinder. The metal tin layer is thin and easily broken.

[0009] In a preferred embodiment, two connecting cylinders are respectively provided at the other ends of the second upper column and the second lower column, and a connecting bolt is provided on one side of the connecting cylinder. Two connecting pins are respectively provided at one end of the first upper column and the first lower column, and a mounting hole is provided on one side of the connecting pin. A connecting shaft is respectively provided at the connection between the first upper column and the second upper column and at the connection between the first lower column and the second lower column.

[0010] The connecting pin is inserted into the inside of the connecting cylinder. Through multiple uprights, a first lower post, a first upper post, a second upper post, and a second lower post connected end to end, the connecting pins of adjacent sections are inserted into the inside of adjacent connecting cylinders, forming a long protective railing.

[0011] In a preferred embodiment, a top shell is fixedly connected to the top of the column, a fixed plate is fixedly connected to the bottom of the column, and multiple rollers are rotatably connected to the bottom of the fixed plate, with multiple friction rings respectively provided on the outer surface of the rollers.

[0012] The rotation axis of the roller is in the same direction as the second lower column and the second upper column, and the function of the friction ring is to increase the friction.

[0013] As can be seen from the above, the protective railing for road, bridge and tunnel engineering provided by this utility model has the following technical effects.

[0014] Firstly, when the mounting cylinder is impacted by a car, the baffle, due to inertia, causes the mounting rod and mounting bracket to slide relative to each other, causing the bottom end of the impact rod to separate from the upper surface of the baffle. The impact spring then causes the impact rod to impact downwards, and the bottom end of the impact rod slides down through the gap in the baffle, impacting the tin layer at the top of the protective cylinder. The tin layer breaks, causing the impact rod to strike the solid sodium azide inside the protective cylinder. The solid sodium azide decomposes rapidly under severe impact, generating a large amount of nitrogen gas. The nitrogen gas fills the airbag through the base, causing the airbag to inflate. The retaining pin on one side of the airbag moves the retaining strip outwards, causing the two protective plates on both sides of the mounting cylinder to separate from the sides of the mounting cylinder, allowing the airbag to continue to inflate outwards. The inflated airbag not only cushions the impact of the car but also protects pedestrians on the other side from injury, thus protecting both pedestrians and cars.

[0015] Secondly, by inserting connecting pins into the interior of the connecting cylinders, the connecting pins of the front and rear adjacent cylinders are respectively inserted into the interior of the front and rear adjacent connecting cylinders. Since they are respectively connected by connecting shafts, after the first lower column, the first upper column, the second upper column, the first lower column, and the second lower column are impacted, the first upper column, the second upper column, the first lower column, and the second lower column will rotate respectively, absorbing the kinetic energy of the car, reducing the degree of deformation of the guardrail, and playing a role in protecting the guardrail. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of a protective railing for road, bridge and tunnel engineering proposed in this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of a protective railing for road, bridge and tunnel engineering proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of a protective railing for road, bridge and tunnel engineering proposed in this utility model.

[0019] Figure 4 This is a partial structural schematic diagram of a protective railing for road, bridge and tunnel engineering proposed in this utility model.

[0020] In the attached diagram: 1. Column; 2. Fixing plate; 3. First lower column; 4. Mounting cylinder; 5. Protective plate; 6. First upper column; 7. Second upper column; 8. Mounting cover; 9. Top shell; 10. Second lower column; 11. Connecting shaft; 12. Connecting cylinder; 13. Connecting bolt; 14. Friction ring; 15. Roller; 16. Airbag; 17. Connecting pin; 18. Impact spring; 19. Impact rod; 20. Buffer spring; 21. Mounting rod; 22. Baffle; 23. Locking block; 24. Base; 25. Protective cylinder; 26. Locking shaft; 27. Locking strip. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] The protective railing disclosed in this utility model for road, bridge and tunnel engineering is mainly used in scenarios where the railing is deformed or broken and loses its original protective function. Out-of-control vehicles or falling railings may directly rush onto the sidewalk, endangering the lives of pedestrians. Damaged protective railings can also cause traffic chaos, increase the risk of accidents, and affect overall traffic safety.

[0024] Reference Figure 1 — Figure 4A guardrail for road, bridge, and tunnel engineering includes a post 1, a second upper post 7 on one side of the post 1, a second lower post 10 at the bottom of one side of the post 1, a first upper post 6 at one end of the second upper post 7, and a first lower post 3 at one end of the second lower post 10. Multiple mounting cylinders 4 are respectively provided at the bottom of the second upper post 7 and the first upper post 6. An mounting cover 8 is provided on the upper surface of the second upper post 7. A base 24 is inserted into the top of the mounting cylinder 4, and an airbag 16 is fixedly connected to the bottom of the base 24. A protective cylinder 25 is fixedly connected to the top of the seat 24. Mounting brackets are respectively provided on both sides of the bottom of the inner wall of the first upper column 6 and the second upper column 7 near the protective cylinder 25. A mounting rod 21 is slidably connected to the top of the mounting bracket. A baffle 22 is fixedly connected to one end of the mounting rod 21. A buffer spring 20 is sleeved on one end of the mounting rod 21. A fixing bracket is fixedly connected to the top of the inner wall of the first upper column 6 and the second upper column 7. An impact rod 19 is slidably connected to the bottom of the fixing bracket. An impact spring 18 is sleeved on one end of the impact rod 19.

[0025] Protective plates 5 are provided on both sides of the mounting cylinder 4. A locking block 23 is provided on one edge of the protective plate 5 and a locking strip 27 is provided on the other edge of the protective plate 5. A locking shaft 26 is provided in the middle of one side of the airbag 16. The top and bottom of the locking shaft 26 are respectively provided with locking grooves.

[0026] One end of the clip 27 is inserted into the slot, and the protective plate 5 and the mounting cylinder 4 are inserted into both sides of the mounting cylinder 4 to seal the internal space of the mounting cylinder 4. The clips 23 are inserted into one side of the mounting cylinder 4 respectively. The inside of the protective cylinder 25 is filled with solid sodium azide, and a metal tin layer is set on the top of the protective cylinder 25. The metal tin layer is thin and easily broken.

[0027] In this embodiment, multiple columns 1, a first lower column 3, a first upper column 6, a second upper column 7, and a second lower column 10 are connected end to end to form a long protective railing. When one side of the mounting cylinder 4 is hit by a car, the baffle 22 will cause the mounting rod 21 to slide relative to the mounting frame due to inertia, causing the bottom end of the impact rod 19 to separate from the upper surface of the baffle 22. The impact spring 18 will then cause the impact rod 19 to impact downwards. The bottom end of the impact rod 19 will slide downwards through the gap in the baffle 22 and impact the tin layer at the top of the protective cylinder 25. The tin layer will break, causing the impact rod to... When the solid sodium azide inside the protective cylinder 25 is impacted by the impact, the solid sodium azide undergoes a decomposition reaction, rapidly generating a large amount of nitrogen gas. The nitrogen gas is then injected into the airbag 16 through the base 24, causing the airbag 16 to inflate. The retaining pin 26 on one side of the airbag 16 drives the retaining strip 27 to move outward, causing the two protective plates 5 on both sides of the mounting cylinder 4 to separate from the sides of the mounting cylinder 4, allowing the airbag 16 to continue to inflate outward. The inflated airbag 16 can not only buffer the impact of the car, but also protect pedestrians on the other side from injury, thus achieving the effect of protecting both pedestrians and cars.

[0028] Reference Figure 1 , Figure 2 In a preferred embodiment, two connecting cylinders 12 are respectively provided at the other end of the second upper column 7 and the second lower column 10. A connecting bolt 13 is provided on one side of the connecting cylinder 12. Two connecting pins 17 are respectively provided at one end of the first upper column 6 and the first lower column 3. A mounting hole is provided on one side of the connecting pin 17. A connecting shaft 11 is respectively provided at the connection between the first upper column 6 and the second upper column 7 and at the connection between the first lower column 3 and the second lower column 10.

[0029] The connecting pin 17 is inserted into the inside of the connecting cylinder 12. Through multiple uprights 1, first lower post 3, first upper post 6, second upper post 7 and second lower post 10 connected end to end, the connecting pins 17 of the front and rear adjacent ones are respectively inserted into the front and rear adjacent connecting cylinders 12 to form a long guardrail.

[0030] In this embodiment, the connecting pin 17 is inserted into the inside of the connecting cylinder 12, so that the connecting pins 17 of the front and rear adjacent ones are respectively inserted into the front and rear adjacent connecting cylinders 12. Since they are rotatably connected by the connecting shaft 11, after the first lower column 3, the first upper column 6, the second upper column 7, and the second lower column 10 are impacted, the first upper column 6, the second upper column 7, the first lower column 3, and the second lower column 10 rotate respectively, absorbing the kinetic energy of the car, reducing the degree of deformation of the guardrail, and playing the role of protecting the guardrail.

[0031] Reference Figure 1 , Figure 2 In a preferred embodiment, a top shell 9 is fixedly connected to the top of the column 1, and a fixed plate 2 is fixedly connected to the bottom of the column 1. Multiple rollers 15 are rotatably connected to the bottom of the fixed plate 2, and multiple friction rings 14 are respectively provided on the outer surface of the rollers 15.

[0032] The rotation axis of roller 15 is aligned with the direction of the second lower column 10 and the second upper column 7. The function of friction ring 14 is to increase friction.

[0033] In this embodiment, when the roller 15 contacts the ground through multiple friction rings 14, the impact of the car causes the column 1 and the fixed plate 2 to slide. Due to the design of the rotation direction of the roller 15, the column 1 slides to one side, preventing the first lower column 3, the first upper column 6, the second upper column 7 and the second lower column 10 from deforming due to the impact of the car, and preventing the fragments generated by the deformation from injuring pedestrians, thus reducing the generation of fragments.

[0034] Working principle: In use, multiple uprights 1, first lower post 3, first upper post 6, second upper post 7, and second lower post 10 are connected end to end to form a long guardrail. Connecting pins 17 are inserted into the inside of connecting cylinders 12, so that adjacent connecting pins 17 are respectively inserted into the inside of adjacent connecting cylinders 12. When one side of the mounting cylinder 4 is hit by a car, the baffle 22 will cause the mounting rod 21 to slide relative to the mounting frame due to inertia, causing the bottom end of the impact rod 19 to separate from the upper surface of the baffle 22, and the impact ball... Spring 18 drives impact rod 19 downwards. The bottom end of impact rod 19 slides down through the gap in baffle 22, impacting the tin layer at the top of protective cylinder 25. The tin layer breaks, causing impact rod 19 to strike the solid sodium azide inside protective cylinder 25. The solid sodium azide decomposes rapidly upon impact, generating a large amount of nitrogen gas. The nitrogen gas fills the airbag 16 through base 24, causing airbag 16 to inflate. The retaining pin 26 on one side of airbag 16 drives retaining bar 27. The outward movement causes the two protective plates 5 on both sides of the mounting cylinder 4 to separate from the sides of the mounting cylinder 4, allowing the airbag 16 to continue to expand outward. The expanded airbag 16 can not only buffer the impact of the car, but also protect pedestrians on the other side from injury, thus protecting both pedestrians and cars. Since they are rotatably connected by connecting shafts 11, after the first lower column 3, the first upper column 6, the second upper column 7, and the second lower column 10 are impacted, the first upper column 6, the second upper column 7, the first lower column 3, and the second lower column 10 rotate respectively, absorbing the kinetic energy of the car and reducing the degree of deformation of the guardrail, thus protecting the guardrail. When the roller 15 contacts the ground through multiple friction rings 14, the impact of the car causes the column 1 and the fixed plate 2 to slide. Due to the design of the rotation direction of the roller 15, the column 1 slides to one side, preventing the first lower column 3, the first upper column 6, the second upper column 7, and the second lower column 10 from deforming due to the impact of the car, preventing the fragments generated by deformation from injuring pedestrians, thus reducing the generation of fragments.

[0035] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A protective railing for road, bridge and tunnel engineering, comprising posts (1), characterized in that, A second upper column (7) is provided on one side of the column (1), and a second lower column (10) is provided at the bottom of one side of the column (1). A first upper column (6) is provided at one end of the second upper column (7), and a first lower column (3) is provided at one end of the second lower column (10). Multiple mounting cylinders (4) are provided at the bottom of the second upper column (7) and the first upper column (6). A mounting cover (8) is provided on the upper surface of the second upper column (7). A base (24) is inserted into the top of the mounting cylinder (4). An airbag (16) is fixedly connected to the bottom of the base (24). The top of the base (24) is... A protective cylinder (25) is fixedly connected. Mounting brackets are respectively provided on both sides of the bottom of the inner wall of the first upper column (6) and the second upper column (7) near the protective cylinder (25). Mounting rod (21) is slidably connected to the top of the mounting bracket. A baffle (22) is fixedly connected to one end of the mounting rod (21). A buffer spring (20) is sleeved on one end of the mounting rod (21). A fixing bracket is fixedly connected to the top of the inner wall of the first upper column (6) and the second upper column (7). An impact rod (19) is slidably connected to the bottom of the fixing bracket. An impact spring (18) is sleeved on one end of the impact rod (19).

2. A protective railing for road, bridge, and tunnel engineering according to claim 1, characterized in that, The mounting cylinder (4) is provided with protective plates (5) on both sides. One edge of the protective plate (5) is provided with a locking block (23), and the other edge of the protective plate (5) is provided with a locking strip (27). A locking shaft (26) is provided in the middle of one side of the airbag (16). The top and bottom of the locking shaft (26) are provided with locking grooves.

3. A protective railing for road, bridge, and tunnel engineering according to claim 2, characterized in that, One end of the clip (27) is inserted into the slot. The protective plate (5) and the mounting cylinder (4) are inserted into both sides of the mounting cylinder (4) to seal the internal space of the mounting cylinder (4). The clips (23) are inserted into one side of the mounting cylinder (4). The interior of the protective cylinder (25) is filled with solid sodium azide. A metal tin layer is provided on the top of the protective cylinder (25). The metal tin layer is thin and easily broken.

4. A protective railing for road, bridge, and tunnel engineering according to claim 3, characterized in that, Two connecting cylinders (12) are respectively provided at the other end of the second upper column (7) and the second lower column (10). A connecting bolt (13) is provided on one side of the connecting cylinder (12). Two connecting pins (17) are respectively provided at one end of the first upper column (6) and the first lower column (3). A mounting hole is provided on one side of the connecting pin (17). A connecting shaft (11) is respectively provided at the connection between the first upper column (6) and the second upper column (7) and the connection between the first lower column (3) and the second lower column (10).

5. A protective railing for road, bridge, and tunnel engineering according to claim 4, characterized in that, The connecting pin (17) is inserted into the inside of the connecting cylinder (12). Through multiple uprights (1), the first lower post (3), the first upper post (6), the second upper post (7), and the second lower post (10), the connecting pins (17) of the front and rear are connected end to end, so that the connecting pins (17) of the front and rear are respectively inserted into the front and rear adjacent connecting cylinders (12) to form a long protective railing.

6. A protective railing for road, bridge, and tunnel engineering according to claim 5, characterized in that, The top of the column (1) is fixedly connected to a top shell (9), and the bottom of the column (1) is fixedly connected to a fixed plate (2). The bottom of the fixed plate (2) is rotatably connected to multiple rollers (15), and the outer surface of the rollers (15) is respectively provided with multiple friction rings (14).

7. A protective railing for road, bridge, and tunnel engineering according to claim 6, characterized in that, The rotation axis of the roller (15) is in the same direction as the second lower column (10) and the second upper column (7), and the function of the friction ring (14) is to increase the friction force.

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