A type of road and bridge safety crash barrier

Abstract

This utility model discloses a road and bridge safety crash barrier, belonging to the field of road and bridge safety protection technology. It aims to solve the problems of traditional guardrails, such as non-adjustable height, insufficient buffering and impact resistance, poor stability, and inconvenient installation and maintenance. It includes multiple guardrail posts, guardrails, elastic bars, adjusting components, connecting components, and a retractable support component. Each guardrail post consists of a mounting base plate and a support post. The connecting component allows for quick installation of the guardrail. The adjusting component allows for adjustment of the collar height by moving the bracket, adapting to different installation requirements of the guardrail. The elastic bar has an elastic part and an arc-shaped buckle, fixed to the mounting rod of the guardrail through a locking hole; the elastic part deforms to absorb energy during a vehicle collision. The retractable support component includes a telescopic rod and a spring II. Mounting plate I connects to the collar, and mounting plate II can be fixed to the ground for reinforcement or connected to the collar for storage. This guardrail can adapt to various protection needs, improve protective adaptability and stability, and simplify the installation and maintenance process.

Description

Technical Field

[0001] This utility model belongs to the field of road and bridge safety protection technology, and relates to a road and bridge safety anti-collision guardrail. Background Technology

[0002] In road and bridge traffic systems, safety crash barriers are crucial facilities for ensuring driving safety and preventing vehicles from running off the road or bridge. Traditional road and bridge crash barriers have a relatively simple structure, typically consisting of guardrail posts and crossbars of fixed height, and the installation height of the guardrails is not adjustable.

[0003] In practical application scenarios, the protection requirements of different road sections and bridges vary. For example, some road sections may require flexible adjustment of the protection height of guardrails due to terrain undulations or special traffic conditions, but traditional guardrails cannot meet this requirement.

[0004] Traditional guardrails have limited cushioning performance. When a vehicle collides with a guardrail, it mainly relies on the guardrail's rigid structure to withstand the impact force, lacking an effective elastic cushioning mechanism. This may result in the vehicle experiencing a large reaction force, increasing the severity of the accident, and may also cause significant damage to the guardrail itself, increasing maintenance costs and frequency.

[0005] The stability of traditional guardrails is also challenged when faced with strong impacts. When subjected to external impacts from major traffic accidents or extreme weather conditions, guardrails may tilt or collapse due to the lack of additional support structures, failing to effectively play a protective role and posing a serious threat to road traffic safety. At the same time, in some installation areas, the surrounding space is limited, and sometimes additional structures can easily obstruct or hinder the passage of people in the surrounding area.

[0006] Traditional guardrails also have some inconveniences in terms of installation and maintenance; some guardrail structures are fixed, the installation process is relatively complicated, and when repairs or replacements of parts are needed, a lot of time and manpower are often required, which affects the normal passage of roads and traffic efficiency. Utility Model Content

[0007] In view of this, in order to solve the above problems, this utility model provides a road and bridge safety crash barrier.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A road and bridge safety crash barrier includes:

[0010] Multiple guardrail posts are installed on both sides of the road and bridge, with multiple guardrail posts on the same side being evenly and continuously installed; each guardrail post consists of a mounting base plate and a support post, with the mounting base plate fixedly installed on the ground and the support post fixedly installed on top of the mounting base plate.

[0011] It also includes multiple guardrails, which are installed between two adjacent guardrail posts. Each guardrail consists of a connecting steel frame and two mounting rods. The two mounting rods are fixedly connected to the top and bottom of the adjacent connecting steel frame, respectively. The multiple guardrails are used to provide barrier protection for both sides of the road and bridge.

[0012] It also includes multiple elastic bars, which are all installed on the side of the adjacent guardrails near the center of the road. The multiple elastic bars can provide elastic buffer for one side of the multiple guardrails.

[0013] It also includes an adjustment component, which includes multiple collars that are slidably sleeved on the outer wall of the support column. Each collar has a connecting column fixedly installed on both sides. The adjustment component is used to enable the installation of multiple guard rods at different height positions.

[0014] It also includes a connecting component, which includes mounting slots at both ends of the connecting steel frame, which cooperate with adjacent connecting columns to complete the installation combination of multiple guard bars;

[0015] It also includes a retractable support assembly, which includes a telescopic bar located on the side of the guardrail post away from the center of the road, for providing additional reinforcement support to the guardrail post when needed.

[0016] As a further improvement to the above technical solution:

[0017] The adjustment assembly also includes a limiting groove opened on the side of the support column near the center of the road. One end of the limiting groove passes through the top of the support column. Multiple fixing blocks are fixedly installed on the inner wall of one side of the limiting groove. The multiple fixing blocks are evenly distributed and a groove is formed between two adjacent fixing blocks. The length of the multiple fixing blocks is equal to half the inner width of the limiting groove, and the multiple fixing blocks are all located inside the limiting groove near one side.

[0018] The adjustment assembly also includes an adjustment hole on one side of the collar, through which a toggle bracket is installed. The toggle bracket is slidably connected to the inner wall of the adjustment hole. A locking block is fixedly installed at one end of the toggle bracket. The locking block is located in the limiting slide groove and slides in cooperation with the inner wall of the limiting slide groove. The locking block cooperates with the locking groove to lock the collar on the outer wall of the support column. A spring I is fixedly installed on one side of the toggle bracket via a spring seat. The other end of the spring I is fixedly installed on the inner wall of one side of the adjustment hole via a spring seat. The spring I is located on the side of the limiting slide groove where no multiple fixing blocks are installed. It is used to push the toggle bracket and drive the locking block to continuously engage in the corresponding locking groove.

[0019] The connecting assembly also includes positioning protrusions fixedly installed on both sides of multiple connecting columns. Positioning grooves are provided on both sides of adjacent mounting grooves. The two positioning protrusions slide in cooperation with the inner walls of the two positioning grooves to complete the positioning and installation of the connecting steel frame. An opening is provided at the bottom of the mounting groove to facilitate the quick combination of the connecting steel frame with the two adjacent connecting columns from above. Two positioning holes II are provided on both sides of the mounting groove. Two positioning holes I are provided through the inside of the connecting column. The two positioning holes I cooperate with the corresponding multiple positioning holes II, which are used to complete the installation and locking of the connecting steel frame by bolts.

[0020] The retractable support assembly also includes two rotating blocks. The telescopic rod is composed of inner and outer rods that are slidably connected to each other. One side of one rotating block is fixedly connected to one end of the outer rod of the telescopic rod, and one side of the other rotating block is fixedly connected to one end of the inner rod of the telescopic rod. One rotating block is hinged to a mounting plate I via a bracket, and the other rotating block is hinged to a mounting plate II via a bracket. A spring II is fitted on the outer wall of the telescopic rod. One end of the spring II is fixedly connected to one side of one rotating block via a spring seat, and the other end of the spring II is fixedly connected to one side of the other rotating block via a spring seat. Mounting holes II are provided on one side of mounting plate I and mounting plate II near the four corners. Four mounting holes I are provided on the side of the multiple collars away from the center of the road. Mounting plate I is fixedly connected to the corresponding collars by the cooperation of mounting holes II and mounting holes I. Mounting plate II can be fixed to the ground by external screws to achieve additional support and reinforcement of the guardrail post by the telescopic rod.

[0021] Mounting plate II is fixedly connected to one side of the corresponding collar by fitting mounting hole II with mounting hole I, so as to store and place the retractable support component and reduce the space it occupies.

[0022] The elastic rod consists of two connecting parts and one elastic part. The two ends of the elastic part are fixedly connected to the two connecting parts respectively. One end of each of the two connecting parts is fixedly installed with an arc-shaped buckle. The arc-shaped buckle engages with the outer wall of the corresponding mounting rod to complete the installation of multiple elastic rods. The outer wall of each of the multiple mounting rods is provided with multiple locking holes I, and the outer wall of each of the multiple arc-shaped buckles is provided with locking holes II. The multiple locking holes II correspond to the corresponding locking holes I and are locked by fixing screws.

[0023] Multiple flexible bars can be installed at different heights on one side of multiple guardrails. The multiple flexible bars can be bent according to the distance between two corresponding guardrails to form an arc-shaped protrusion towards the center of the road.

[0024] Elastic protruding posts are fixedly installed at the four corners of the outer wall of multiple collars to improve the buffer protection performance of the guardrail posts.

[0025] The beneficial effects of this utility model are as follows:

[0026] 1. The road and bridge safety crash barrier disclosed in this utility model, through the design of the adjustable component, allows operators to flexibly adjust the installation height of the guardrail according to actual protection needs; simply move the lever horizontally to move the locking block out of the current slot, move the collar up and down to the required height, and then release the lever. The restoring force of the spring will push the locking block into the corresponding height slot, achieving precise positioning of the collar; this height-adjustable feature allows the barrier to adapt to the diverse protection needs of different road sections and bridges, improving the barrier's versatility and practicality.

[0027] 2. The road and bridge safety crash barrier disclosed in this utility model has an elastic rod that is fastened to the mounting rod of the guardrail by an arc-shaped buckle, and can be installed at different heights as needed. When subjected to lateral impact, the elastic part of the elastic rod deforms, effectively absorbing the collision energy and reducing the impact force on the overall barrier. This elastic buffering mechanism can reduce the reaction force on the vehicle during a collision, reduce the severity of the accident, and also help protect the barrier itself, reducing damage and maintenance costs.

[0028] 3. The road and bridge safety crash barrier disclosed in this utility model features a retractable support component design that provides additional reinforcement for the barrier. When enhanced overall stability is required, the mounting plate is bolted to the ground and the collar, and the telescopic rod remains extended under the action of the spring, forming an oblique support that effectively disperses impact force and reinforces the barrier. When no additional support is needed or the installation space is limited, the mounting plate can be connected to the lower collar, allowing the telescopic rod to be retracted against the barrier post, reducing space occupation. This retractable design not only meets the usage needs of different scenarios but also improves the flexibility and adaptability of the barrier.

[0029] 4. The road and bridge safety crash barrier disclosed in this utility model comprises multiple guardrails that are fitted onto connecting posts from top to bottom through mounting grooves at both ends. Initial positioning is achieved through the cooperation of positioning protrusions and positioning grooves, followed by fastening with bolts passing through positioning holes to form a continuous protective surface. This installation method is simple to operate, greatly shortens installation time, and improves installation efficiency. Simultaneously, it allows for convenient and quick operation when maintenance or replacement of parts is needed, reducing the impact on normal road traffic and lowering maintenance costs.

[0030] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0032] Figure 1 This is a three-dimensional structural schematic diagram of a road and bridge safety crash barrier according to the present invention;

[0033] Figure 2 This is a schematic diagram showing the disassembled structure of a road and bridge safety crash barrier according to the present invention;

[0034] Figure 3 This is a schematic diagram of the guardrail column structure of a road and bridge safety crash barrier according to the present invention;

[0035] Figure 4 This is a schematic diagram of the limiting groove structure of a road and bridge safety crash barrier according to the present invention;

[0036] Figure 5 This is a schematic diagram of the collar structure of a road and bridge safety crash barrier according to the present invention;

[0037] Figure 6 This is a schematic diagram of the retractable support component structure of a road and bridge safety crash barrier according to the present invention.

[0038] Figure 7 This is a schematic diagram of the elastic rod installation structure of a road and bridge safety crash barrier according to the present invention;

[0039] Figure 8 This is a schematic diagram of the end structure of the protective pole of a road and bridge safety crash barrier according to the present invention;

[0040] Figure 9 This is a schematic diagram of the installation structure of the elastic bar of a road and bridge safety crash barrier according to this utility model.

[0041] Reference numerals: 1. Guardrail post; 2. Guardrail bar; 3. Elastic bar; 4. Mounting base plate; 5. Support post; 6. Collar; 7. Connecting post; 8. Limiting groove; 9. Fixing block; 10. Slot; 11. Elastic protrusion; 12. Positioning protrusion; 13. Positioning hole I; 14. Adjustment hole; 15. Actuating bracket; 16. Locking block; 17. Spring I; 18. Mounting hole I; 19. Mounting plate I; 20. Rotating block; 21. Telescopic bar; 22. Spring II; 23. Mounting plate II; 24. Mounting hole II; 25. Connecting steel frame; 26. Mounting bar; 27. Mounting groove; 28. Positioning groove; 29. ​​Positioning hole II; 30. Locking hole I; 31. Elastic part; 32. Connecting part; 33. Arc-shaped buckle; 34. Locking hole II. Detailed Implementation

[0042] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] like Figures 1-9 The road and bridge safety crash barrier shown includes: a guardrail post 1, a guardrail 2, an elastic rod 3, an adjustment component, a connecting component, and a retractable support component.

[0044] In this embodiment, guardrail posts 1 are installed on both sides of the road and bridge, with multiple guardrail posts 1 on the same side arranged evenly and continuously. Each guardrail post 1 consists of a mounting base plate 4 and a support post 5. The mounting base plate 4 is fixed to the ground by bolts, and the support post 5 is vertically fixed to the top of the mounting base plate 4.

[0045] In this embodiment, the guardrail 2 is installed between two adjacent guardrail posts 1 and consists of a connecting steel frame 25 and two mounting rods 26. The two mounting rods 26 are respectively welded to the top and bottom of the adjacent connecting steel frame 25. Multiple guardrails 2 can jointly provide barrier protection for both sides of the road bridge.

[0046] In this embodiment, the adjustment assembly is used to install the guardrail 2 at different height positions. The adjustment assembly includes multiple collars 6 that are slidably sleeved on the outer wall of the support column 5, and connecting columns 7 are fixedly installed on both sides of the collars 6. A limiting groove 8 is opened on the side of the support column 5 near the center of the road, and one end of the limiting groove 8 passes through the top of the support column 5. Multiple fixing blocks 9 are fixedly installed on the inner wall of one side of the limiting groove 8. The multiple fixing blocks 9 are evenly distributed, and a groove 10 is formed between two adjacent fixing blocks 9. The length of the fixing blocks 9 is equal to half the inner width of the limiting groove 8, and they are all located inside the limiting groove 8 near one side.

[0047] In this embodiment, an adjustment hole 14 is provided on one side of the collar 6, and a toggle bracket 15 is disposed through the adjustment hole 14. The toggle bracket 15 is slidably connected to the inner wall of the adjustment hole 14. A locking block 16 is fixedly installed at one end of the toggle bracket 15. The locking block 16 is located in the limiting slide groove 8 and slides in cooperation with the inner wall of the limiting slide groove 8. The locking block 16 cooperates with the locking groove 10 to lock the collar 6 on the outer wall of the support column 5. A spring I 17 is fixedly installed on one side of the toggle bracket 15 through a spring seat. The other end of the spring I 17 is fixedly installed on the inner wall of one side of the adjustment hole 14 through a spring seat. The spring I 17 is located on the side of the limiting slide groove 8 where no multiple fixing blocks 9 are installed. It is used to push the toggle bracket 15 and drive the locking block 16 to continuously engage in the corresponding locking groove 10. When the height of the collar 6 needs to be adjusted, the lever bracket 15 is moved to one side to disengage the locking block 16 from the slot 10. At this time, the collar 6 can be slid up and down. When the collar 6 moves to the appropriate height, the lever bracket 15 is released. The spring I 17 pushes the lever bracket 15 to make the locking block 16 engage with the corresponding slot 10, thus locking the collar 6.

[0048] In this embodiment, the connecting assembly is used to complete the installation and combination of multiple guard rods 2. The connecting assembly includes mounting grooves 27 at both ends of the connecting steel frame 25, which cooperate with adjacent connecting posts 7. Positioning protrusions 12 are fixedly installed on both sides of the connecting posts 7, and positioning grooves 28 are provided on both sides of the adjacent mounting grooves 27. The two positioning protrusions 12 slide with the inner walls of the two positioning grooves 28 to complete the positioning and installation of the connecting steel frame 25. An opening is provided at the bottom of the mounting groove 27 to facilitate the quick combination of the connecting steel frame 25 with the two adjacent connecting posts 7 from above. Two positioning holes II 29 are provided on both sides of the mounting groove 27, and two positioning holes I 13 are provided through the inside of the connecting post 7. The two positioning holes I 13 cooperate with the corresponding multiple positioning holes II 29. By passing bolts through the positioning holes I 13 and positioning holes II 29 and tightening them, the installation and locking of the connecting steel frame 25 is completed.

[0049] In this embodiment, the retractable support assembly is used to provide additional reinforcement support for the guardrail post 1 when needed. The retractable support assembly includes a telescopic rod 21 disposed on the side of the guardrail post 1 away from the center of the road. The telescopic rod 21 is composed of inner and outer rods that are slidably connected to each other. Two rotating blocks 20 are fixedly connected to both ends of the telescopic rod 21. One side of one rotating block 20 is fixedly connected to one end of the outer rod of the telescopic rod 21, and one side of the other rotating block 20 is fixedly connected to one end of the inner rod of the telescopic rod 21. One rotating block 20 is hinged to a mounting plate I 19 via a bracket, and the other rotating block 20 is hinged to a mounting plate II 23 via a bracket. A spring II 22 is sleeved on the outer wall of the telescopic rod 21. One end of the spring II 22 is fixedly connected to one side of one rotating block 20 via a spring seat, and the other end of the spring II 22 is fixedly connected to one side of the other rotating block 20 via a spring seat. Mounting holes II24 are provided on one side of mounting plate I19 and mounting plate II23 near the four corners, and four mounting holes I18 are provided on the side of the multiple collars 6 away from the center of the road.

[0050] In normal use, mounting plate I19 is fixedly connected to the corresponding collar 6 via mounting holes II24 and I18 using fixing screws. Mounting plate II23 is fixed to the ground with external screws, providing additional support and reinforcement for the guardrail post 1 via the telescopic pole 21. In another usage scenario, when additional support is not required, mounting plate II23 is fixedly connected to one side of the corresponding collar 6 via mounting holes II24 and I18 using bolts, allowing for the storage of the retractable support component and reducing its space occupation.

[0051] In this embodiment, the elastic rod 3 is installed on the side of the adjacent guardrails 2 closest to the center of the road, providing elastic cushioning for the guardrails 2. The elastic rod 3 consists of two connecting parts 32 and one elastic part 31, with both ends of the elastic part 31 fixedly connected to the two connecting parts 32 respectively. An arc-shaped buckle 33 is fixedly installed at one end of each of the two connecting parts 32, and the arc-shaped buckle 33 engages with the outer wall of the corresponding mounting rod 26 to realize the installation of the elastic rod 3.

[0052] In this embodiment, the outer wall of the mounting rod 26 is provided with multiple locking holes I 30, and the outer wall of the arc-shaped buckle 33 is provided with locking holes II 34. The locking holes II 34 correspond to the corresponding locking holes I 30. The locking of the elastic rod 3 is completed by passing the fixing screw through the locking holes I 30 and the locking holes II 34 and tightening it.

[0053] In this embodiment, multiple elastic rods 3 can be installed at different heights on one side of the guardrail 2, and they can be bent according to the distance between two corresponding guardrails 2 to form an arc-shaped protrusion towards the center of the road.

[0054] In this embodiment, elastic protruding posts 11 are fixedly installed at the four corners of the outer wall of the multiple collars 6 to improve the buffer protection performance of the guardrail posts 1.

[0055] The operation of this device is as follows: During actual use, the operator can adjust the installation height of the guardrail 2 according to the actual protection requirements. By horizontally moving the lever bracket 15 to one side, the locking block 16 can be moved out of the current slot 10, at which point the spring I 17 is compressed. After moving the collar 6 up and down to the required height, the lever bracket 15 is released, and the restoring force of the spring I 17 can push the locking block 16 into the corresponding height slot 10, thus positioning the collar 6. Next, multiple guardrails 2 are fitted onto the connecting column 7 from top to bottom through the mounting slots 27 at both ends. Initial positioning is achieved by the cooperation of the positioning protrusion 12 and the positioning slot 28. Subsequently, bolts are passed through the positioning holes I 13 and II 29 to complete the fastening, forming a continuous protective surface.

[0056] The elastic rod 3 is engaged with the mounting rod 26 of the guardrail 2 via an arc-shaped buckle 33. Operators can install it at different heights as needed, and then lock it by passing a fixing screw through the locking hole I 30 and the locking hole II 34. When subjected to a lateral impact, the elastic part 31 of the elastic rod 3 deforms, which can effectively absorb the impact energy and reduce the impact force on the overall guardrail.

[0057] When enhanced overall stability of the guardrail is required, the retractable support assembly can be deployed. Mounting plate II 23 is bolted to the ground, and mounting plate I 19 is fixed to mounting hole I 18 of collar 6. The telescopic rod 21 remains extended under the action of spring II 22, forming an oblique support that effectively disperses impact force and reinforces the guardrail. When no additional support is needed or installation space is limited, mounting plate II 23 can be connected to mounting hole I 18 on one side of the lower collar 6, allowing the telescopic rod 21 to be retracted against the guardrail post 1, thus reducing space occupation.

[0058] This guardrail combines height-adjustable guardrails 2 with multi-position adjustable elastic bars 3 to adapt to different protection needs. The retractable support components further enhance impact resistance and stability. The overall structure is flexible to install and easy to maintain, making it suitable for safety protection in various working conditions on roads and bridges.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A road and bridge safety crash barrier, characterized in that, include: Multiple guardrail posts (1) are provided on both sides of the road and bridge. The multiple guardrail posts (1) on the same side are evenly and continuously provided. The multiple guardrail posts (1) are composed of a mounting base plate (4) and a support column (5). The mounting base plate (4) is fixedly installed on the ground, and the support column (5) is fixedly installed on the top of the mounting base plate (4). It also includes multiple guardrails (2), which are set between two adjacent guardrail posts (1). Each guardrail (2) consists of a connecting steel frame (25) and two mounting rods (26). The two mounting rods (26) are fixedly connected to the top and bottom of the adjacent connecting steel frame (25) respectively. The multiple guardrails (2) are used to provide barrier protection for both sides of the road and bridge. It also includes multiple elastic bars (3), each of which is disposed on the side of the adjacent multiple guard bars (2) near the center of the road, and the multiple elastic bars (3) can provide elastic buffer for one side of the multiple guard bars (2); It also includes an adjustment component, which includes multiple collars (6) that are slidably sleeved on the outer wall of the support column (5), and connecting columns (7) are fixedly installed on both sides of the multiple collars (6). The adjustment component is used to realize the installation of multiple guard rods (2) at different height positions. It also includes a connecting component, which includes mounting slots (27) opened at both ends of the connecting steel frame (25), which cooperate with the adjacent connecting column (7) to complete the installation combination of multiple guard rods (2); It also includes a retractable support assembly, which includes a telescopic rod (21) disposed on the side of the guardrail post (1) away from the center of the road, for providing additional reinforcement support to the guardrail post (1) when needed.

2. The road and bridge safety crash barrier according to claim 1, characterized in that, The adjustment assembly also includes a limiting groove (8) opened on the side of the support column (5) near the center of the road. One end of the limiting groove (8) passes through the top of the support column (5). Multiple fixing blocks (9) are fixedly installed on the inner wall of one side of the limiting groove (8). The multiple fixing blocks (9) are evenly distributed, and a slot (10) is formed between two adjacent fixing blocks (9). The length of the multiple fixing blocks (9) is equal to half the internal width of the limiting groove (8), and the multiple fixing blocks (9) are all located inside the limiting groove (8) near one side.

3. A road and bridge safety crash barrier according to claim 2, characterized in that, The adjustment assembly also includes an adjustment hole (14) on one side of the collar (6). A toggle bracket (15) is provided through the interior of the adjustment hole (14). The toggle bracket (15) is slidably connected to the inner wall of the adjustment hole (14). A locking block (16) is fixedly installed at one end of the toggle bracket (15). The locking block (16) is located in the limiting slide groove (8) and slides in cooperation with the inner wall of the limiting slide groove (8). The locking block (16) cooperates with the locking groove (10). Used to lock the collar (6) on the outer wall of the support column (5); one side of the actuating bracket (15) is fixedly installed with a spring I (17) by a spring seat, and the other end of the spring I (17) is fixedly installed on the inner wall of the adjusting hole (14) by a spring seat. The spring I (17) is located on the side of the limiting slide groove (8) where no multiple fixing blocks (9) are installed. It is used to push the actuating bracket (15) and drive the locking block (16) to continuously lock into the corresponding locking groove (10).

4. A road and bridge safety crash barrier according to claim 1, characterized in that, The connecting assembly also includes positioning protrusions (12) fixedly installed on both sides of multiple connecting columns (7). Positioning grooves (28) are provided on both sides of the adjacent mounting grooves (27). The two positioning protrusions (12) slide in cooperation with the inner walls of the two positioning grooves (28) to complete the positioning and installation of the connecting steel frame (25). An opening is provided at the bottom of the mounting groove (27) to facilitate the quick combination of the connecting steel frame (25) with the two adjacent connecting columns (7) from above. Two positioning holes II (29) are provided on both sides of the mounting groove (27). Two positioning holes I (13) are provided through the inside of the connecting column (7). The two positioning holes I (13) cooperate with the corresponding multiple positioning holes II (29).

5. A road and bridge safety crash barrier according to claim 1, characterized in that, The retractable support assembly also includes two rotating blocks (20). The telescopic rod (21) is composed of inner and outer rods that are slidably connected to each other. One side of one of the rotating blocks (20) is fixedly connected to one end of the outer rod of the telescopic rod (21), and one side of the other rotating block (20) is fixedly connected to one end of the inner rod of the telescopic rod (21). One of the rotating blocks (20) is hinged to a mounting plate I (19) via a bracket, and the other rotating block (20) is hinged to a mounting plate II (23) via a bracket. A spring II (22) is sleeved on the outer wall of the telescopic rod (21). One end of the spring II (22) is connected to one of the rotating blocks (20) via a spring seat. One side of the spring II (22) is fixedly connected, and the other end of the spring II (22) is fixedly connected to one side of another rotating block (20) through the spring seat; the mounting plate I (19) and the mounting plate II (23) are provided with mounting holes II (24) near the four corners on one side, and four mounting holes I (18) are provided on the side of the multiple collars (6) away from the center of the road. The mounting plate I (19) is fixedly connected to the corresponding collar (6) through the cooperation of mounting holes II (24) and mounting holes I (18). The mounting plate II (23) can be fixed to the ground by external screws to realize the additional support and reinforcement of the guardrail post (1) by the telescopic rod (21).

6. A road and bridge safety crash barrier according to claim 5, characterized in that, In another usage scenario, the mounting plate II (23) is fixedly connected to one side of the corresponding collar (6) by the cooperation of mounting hole II (24) and mounting hole I (18).

7. A road and bridge safety crash barrier according to claim 1, characterized in that, The elastic rod (3) consists of two connecting parts (32) and one elastic part (31). The two ends of the elastic part (31) are fixedly connected to the two connecting parts (32) respectively. One end of each of the two connecting parts (32) is fixedly installed with an arc-shaped buckle (33). The arc-shaped buckle (33) engages with the outer wall of the corresponding mounting rod (26) to complete the installation of multiple elastic rods (3). The outer walls of the multiple mounting rods (26) are provided with multiple locking holes I (30), and the outer walls of the multiple arc-shaped buckles (33) are provided with locking holes II (34). The multiple locking holes II (34) correspond to the corresponding locking holes I (30) and are locked by fixing screws.

8. A road and bridge safety crash barrier according to claim 7, characterized in that, Multiple elastic rods (3) are installed at different height positions on one side of multiple guardrails (2), and the multiple elastic rods (3) are bent according to the distance between two corresponding guardrails (2) to form an arc-shaped protrusion towards the center of the road.

9. A road and bridge safety crash barrier according to claim 1, characterized in that, Elastic protrusions (11) are fixedly installed at the four corners of the outer wall of the multiple collars (6).

Images