Steel structure bridge crash barrier

Abstract

The utility model relates to a kind of steel structure bridge crash barrier, involve bridge engineering technical field, and it includes concrete The top of concrete is fixedly connected with two fixed columns, the outer wall of two The dismounting mechanism is installed in the fixed column, the front end of two The buffer mechanism is installed in the dismounting mechanism;The dismounting mechanism includes sealing box, the inner wall of sealing box is detachably connected in The outer wall of fixed column, the inner wall of sealing box is fixedly connected with pneumatic cylinder, the drive end of pneumatic cylinder is fixedly connected with sliding block one, the inner wall of sliding block one is rotatably connected with two connecting rods one.The utility model in, by pneumatic cylinder drive sliding block one moves, drives two connecting rods one rotation, so that fixed block brings clamp along the guide rod of guide assembly and compresses spring one, realizes clamp opening and closing, without to whole structure disassembly, greatly shorten maintenance time, reduce the influence to bridge traffic.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to a steel structure bridge anti-collision guardrail. Background Technology

[0002] Steel bridge crash barriers are safety protection facilities on both sides or in the central divider of bridges. They are primarily made of high-strength steel such as Q235B and Q345B, and consist of columns, beams, buffer components, and connectors. The columns act as the main support, transferring loads, while the beams are the main load-bearing components; some designs include multiple layers of beams. Buffer components, such as elastic rubber blocks, mitigate the impact of collisions. Connectors ensure structural stability through bolts, welding, and other methods. They prevent vehicles from going off the bridge, reducing accident injuries and losses. They are characterized by their light weight, high strength, strong impact resistance, ease of maintenance, and aesthetic appeal, and are widely used in highway and railway bridges.

[0003] A search revealed Chinese Patent Publication No. CN202420651359.4, which discloses a steel structure bridge railing, relating to the technical field of bridge railings. The railing comprises two bases and three horizontal rails. Fixed posts are fixedly installed on the top surfaces of the two bases, and mounting components are provided on one side surface of each of the two fixed posts. Buffer components are provided on the surfaces of the three horizontal rails. Two extension plates are fixedly installed on the surfaces of the two fixed posts, and rotating plates are rotatably connected to both sides of the two extension plates. This utility model belongs to the technical field of construction railings, specifically a modular structure steel structure construction railing that is easy to install, highly replaceable, and allows for easy adjustment of the railing's shape and height to meet different needs. It is also modular and portable for transport.

[0004] The aforementioned patent mentions the following beneficial effects: "By controlling the first and second clamps to disassemble the crossbar, when the steel structure bridge railing is partially damaged, it can be quickly disassembled and replaced, reducing maintenance costs and improving work efficiency. When the crash barrier is hit by a vehicle, it can use the first and second springs to alleviate the impact force of the vehicle, effectively preventing damage to the steel structure bridge railing, protecting the safety of the people inside the vehicle, and improving the practicality of the device." However, the splicing of multiple components increases the structural complexity. After long-term exposure to vehicle vibration and wind and rain erosion, bolts are prone to loosening and sliders may become stuck, affecting the stability of the connection and requiring frequent maintenance. Gaps and moving joints at the splicing points will become weak points for corrosion, and water vapor and salt can easily penetrate, causing the steel to rust faster. In humid or coastal environments, this will shorten the service life of the railing. Therefore, a steel structure bridge crash barrier is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a steel structure bridge crash barrier, which aims to improve the problem that when a part is damaged by impact, corrosion or other factors, the entire structure or a large section of the structure needs to be disassembled, which is not only cumbersome and time-consuming, but also seriously affects the traffic flow on the bridge.

[0006] The patch inductor magnetic cover structure provided in this application adopts the following technical solution: A steel structure bridge crash barrier includes concrete, with two fixed posts fixedly connected to the top of each concrete section. A disassembly mechanism is installed on the outer wall of each of the two fixed posts, and a buffer mechanism is installed at the front end of each of the two disassembly mechanisms. The disassembly mechanism includes a sealing box, the inner wall of which is detachably connected to the outer wall of the fixed column. A cylinder is fixedly connected to the inner wall of the sealing box, and a sliding block is fixedly connected to the driving end of the cylinder. Two connecting rods are rotatably connected to the inner wall of each sliding block, and a fixed block is rotatably connected to the other end of each connecting rod. A clamp is fixedly connected to the bottom end of each fixed block, and a guide assembly is fixedly connected to the inner wall of the sealing box. The above technical solution involves a disassembly mechanism installed on the outer walls of the two fixed columns at the top of the concrete. The inner wall of the sealed box of this mechanism is detachably connected to the outer wall of the fixed column. A cylinder inside the box drives a sliding block to move, which in turn drives two connecting rods that are rotatably connected to its inner wall. This causes the fixed block and bottom clamp, which are rotatably connected at the other end, to move. A guide assembly inside the box provides auxiliary guidance.

[0007] Preferably, the guide assembly includes a guide rod, the left and right ends of which are fixedly connected to the inside of the sealed box, and a plurality of springs are sleeved on the outer wall of the guide rod; Through the above technical solution: the guide rod of the guide assembly is fixed at both ends inside the sealed box, which plays a supporting and guiding role, ensuring that the relevant components slide along a fixed trajectory. Multiple springs sleeved on its outer wall can deform when the components move, providing elastic buffer and helping the components to reset, ensuring the smooth operation of the mechanism.

[0008] Preferably, the buffer mechanism includes a hollow cuboid, the rear end of which is fixedly connected to the front end of the sealed box. Two sliding blocks are slidably connected to the inner wall of the hollow cuboid, and two limiting rods are fixedly connected to the inner wall of the hollow cuboid. Connecting rods are rotatably connected to the inner walls of the two sliding blocks. Springs are sleeved on the outer walls of the two limiting rods. Multiple support rods are fixedly connected to the front end of the hollow cuboid, and springs are sleeved on the outer walls of the multiple support rods. A fixing plate is fixedly connected to the front end of the multiple support rods. Through the above technical solution: the rear end of the hollow cuboid of the buffer mechanism is connected to the front end of the sealed box, and the two sliding blocks inside slide along the fixed limiting rod. The connecting rod connected to its inner wall can be driven. The outer spring of the limiting rod and the outer spring of the front support rod can buffer. When the fixed plate at the front end of the support rod is subjected to force, the buffer protection is achieved through the cooperation of these components.

[0009] Preferably, a steel pipe is fixedly connected to the inner wall of the fixing plate, a honeycomb tube is fixedly connected to the inner wall of the steel pipe, annular plates are fixedly connected to both ends of the honeycomb tube, a plurality of tapered guide pins are slidably connected to the inner walls of the two annular plates, and a bidirectional compression spring is fixedly connected to the outer wall of the plurality of tapered guide pins. The above technical solution involves a honeycomb tube inside a steel pipe fixed to the inner wall of the fixed plate. The honeycomb tube is connected to annular plates at both ends to form a multi-layer buffer structure. Multiple tapered guide pins that slide on the inner wall of the annular plates have bidirectional compression springs on their outer walls that can deform under force. These springs, in conjunction with the honeycomb tubes, further disperse and buffer the impact force, enhancing the protective effect.

[0010] Preferably, the inner wall of the clamp is slidably connected to the outer wall of the guide rod, and the bottom end of the clamp is slidably connected to the inner wall of the sealing box; Through the above technical solution: the inner wall of the clamp slides along the outer wall of the guide rod, the guide rod provides it with a stable sliding trajectory, and the bottom end of the clamp slides with the inner wall of the sealed box, further limiting its range of motion. The two work together to ensure that the clamp accurately completes the opening and closing action and ensures the stable operation of the disassembly mechanism.

[0011] Preferably, one end of the spring is fixedly connected to the inner wall of the sealing box, and the other end of the spring is fixedly connected to the outer wall of the clamp. Through the above technical solution: the two ends of the spring are respectively connected to the inner wall of the sealing box and the outer wall of the clamp. When the clamp slides, the spring will stretch and deform accordingly. The elastic force generated can assist the clamp in resetting and at the same time buffer the impact force when the clamp moves, ensuring the smooth operation of the disassembly mechanism.

[0012] Preferably, the left and right sides of the second spring are fixedly connected to the adjacent side of the two second sliding blocks, and the inner wall of the second sliding block is slidably connected to the outer wall of the limiting rod; Through the above technical solution: the two sides of the spring are connected to the adjacent sides of the two sliding blocks. The inner wall of the sliding block slides along the outer wall of the limiting rod. The limiting rod provides guidance for the sliding block. The spring extends and retracts when the sliding block moves, and buffers and assists in its reset through elasticity, ensuring the stable operation of the buffer mechanism.

[0013] Preferably, one end of the spring three is fixedly connected to the front end of the hollow cuboid, the other end of the spring three is fixedly connected to the rear end of the fixed plate, and the outer wall of the support rod is slidably connected to the inner wall of the hollow cuboid. Through the above technical solution: The three springs are connected at both ends to the front end of the hollow cuboid and the rear end of the fixed plate, respectively. The outer wall of the support rod slides along the inner wall of the hollow cuboid. When the fixed plate is subjected to force, the support rod drives it to slide, and the three springs extend and deform accordingly. The spring force buffers the impact force, while the support rod ensures that the fixed plate moves in a fixed direction, thus enhancing the stability of the buffer mechanism.

[0014] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, the sliding block is moved by the cylinder, which drives the two connecting rods to rotate. This causes the fixed block to slide along the guide rod of the guide assembly and compress the spring, thereby opening and closing the clamp and completing the disassembly or fixing of the sealing box and the fixed column. When there is partial damage, there is no need to disassemble the overall structure. The damaged parts can be quickly replaced by special components, which greatly shortens the maintenance time and reduces the impact on bridge traffic. It can replace individual damaged parts in a targeted manner, avoiding the material waste caused by large-scale replacement and reducing maintenance costs.

[0015] 2. In this utility model, when the steel pipe is impacted, the fixed plate pushes the support rod to compress the spring three. At the same time, the connecting rod two drives the sliding block two to slide along the limiting rod and compress the spring two. The spring two and the spring three work together to buffer the impact force. When a vehicle collides, the buffer mechanism can effectively absorb and disperse the impact force through its own deformation or energy absorption, reduce the impact force on the vehicle, reduce the risk of injury or death to the driver and passengers, and at the same time reduce the direct impact of the vehicle on the guardrail, reduce the degree of damage to the guardrail itself, reduce the deformation or breakage of the guardrail caused by the impact, and extend its service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a steel structure bridge crash barrier proposed in this utility model; Figure 2 This is a schematic diagram of the steel pipe structure of a steel structure bridge crash barrier proposed in this utility model; Figure 3 This is a structural schematic diagram of a sealed box for a steel bridge crash barrier proposed in this utility model. Figure 4 This is a schematic diagram of the hollow cuboid structure of a steel bridge crash barrier proposed in this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Concrete; 2. Fixed column; 3. Dismantling mechanism; 31. Sealing box; 32. Cylinder; 33. Sliding block one; 34. Connecting rod one; 35. Fixed block; 36. Clamp; 37. Guide assembly; 371. Guide rod; 372. Spring one; 4. Buffer mechanism; 41. Hollow cuboid; 42. Sliding block two; 43. Limiting rod; 44. Connecting rod two; 45. Spring two; 46. Support rod; 47. Spring three; 48. Fixed plate; 5. Steel pipe; 6. Honeycomb tube; 7. Annular plate; 8. Conical guide pin; 9. Bidirectional compression spring. Detailed Implementation

[0018] The following combination Figures 1-4 This application will be described in further detail below.

[0019] Example: A steel structure bridge crash barrier, referenced Figures 1 to 3 The system includes: concrete 1, which provides a stable foundation for the fixed posts 2 and bears the weight of the fixed posts 2 and the structure above them with its own strength. Two fixed posts 2 are fixedly connected to the top of each concrete 1. The fixed posts 2 stand vertically on the top of the concrete 1 and serve as the supporting skeleton of the guardrail, enhancing the stability and impact resistance of the overall structure. The outer walls of the two fixed posts 2 are equipped with disassembly mechanisms 3, which provide installation points for the disassembly mechanisms 3 to ensure their precise positioning. The disassembly mechanisms 3 are detachably connected to the fixed posts 2, facilitating future maintenance and replacement and improving the ease of maintenance of the guardrail. The front ends of the two disassembly mechanisms 3 are equipped with buffer mechanisms 4, which provide the installation base for the buffer mechanisms 4 and fix them stably at the front end. The two work together to form a protective system. Specifically, the steel structure bridge crash barrier, through the cooperation of concrete 1, fixed column 2, dismantling mechanism 3 and buffer mechanism 4, achieves multiple protections for the bridge, effectively disperses and buffers the impact force generated by vehicle collisions, prevents the barrier from being severely deformed or damaged due to impact, and ensures the safety of the bridge structure and the safety of passing vehicles and personnel.

[0020] The disassembly mechanism 3 includes a sealed box 31, which serves as the outer shell of the disassembly mechanism 3, providing a protective space for the internal components and ensuring that the disassembly operation is completed in a stable environment. The inner wall of the sealed box 31 is detachably connected to the outer wall of the fixed column 2. The fixed column 2 provides vertical support for the sealed box 31, ensuring that the sealed box 31 remains stable and does not shift when subjected to external forces. A cylinder 32 is fixedly connected to the inner wall of the sealed box 31, providing installation space and protection for the cylinder 32 and preventing external environmental corrosion of the cylinder 32. A sliding block 33 is fixedly connected to the drive end of the cylinder 32. The cylinder 32 converts pneumatic energy into mechanical energy to drive its movement. The sliding block 33 receives the driving force of the cylinder 32 and acts as an intermediate carrier to transmit power and trigger the action of subsequent components. Specifically, the disassembly mechanism 3, through the cooperation of components such as the sealing box 31, cylinder 32, and sliding block 33, realizes the convenient disassembly and stable connection of the fixed column 2, can accurately transmit power to complete the opening and closing action of the clamp 36, prevent the guardrail components from falling off due to loose connection, and at the same time avoid the external environment from corroding the internal components, ensuring the stability and reliability of the disassembly process.

[0021] The inner wall of the sliding block 33 is rotatably connected to two connecting rods 34. The movement of the sliding block 33 drives the connecting rods to rotate, realizing the change of force direction. The other end of the two connecting rods 34 is rotatably connected to a fixed block 35. The other end of the connecting rod 34 is connected to the fixed block 35, transmitting the force generated by the rotation to the fixed block 35. The bottom end of the two fixed blocks 35 is fixedly connected to a clamp 36. The bottom end of the fixed block 35 is connected to the clamp 36, driving the clamp 36 to complete the opening and closing action. The clamp 36 clamps or releases the component through the force transmitted by the fixed block 35. The inner wall of the sealing box 31 is fixedly connected to a guide assembly 37. The guide assembly 37 is fixed to the inner wall of the sealing box 31 to provide a stable installation base. The guide assembly 37 plays a guiding role in the sealing box 31, ensuring that the relevant components move along the predetermined trajectory and improving the accuracy of the mechanism's action. Specifically, the cooperation of sliding block 33, connecting rod 34, fixing block 35, clamp 36 and guide assembly 37 realizes the conversion and precise transmission of force, allowing clamp 36 to stably complete the opening and closing action, ensuring the efficient operation of disassembly mechanism 3, preventing the movement of parts from deviating or uneven force from causing action failure or damage, and ensuring the precise and reliable clamping and releasing of fixing column 2.

[0022] Reference Figures 1 to 3 The guide assembly 37 includes a guide rod 371. As a key part of the guide assembly 37, the guide rod 371 provides a stable sliding track for other components, ensuring precise and controllable movements. The left and right ends of the guide rod 371 are fixedly connected to the inside of the sealing box 31. The guide rod 371 is fixed inside the sealing box 31 and obtains firm support with the help of the sealing box 31 to ensure its own position stability. Multiple springs 372 are sleeved on the outer wall of the guide rod 371. The outer wall of the guide rod 371 provides installation space and deformation guidance for the springs 372 to prevent the springs from deviating. Specifically, in the guide assembly 37, the guide rod 371 provides a stable sliding track and is firmly fixed by the sealing box 31. The spring 372 on its outer wall does not deviate during installation and deformation, realizing precise guidance and action buffering of related components, preventing the components from deviating from the trajectory or the mechanism from jamming or unstable action due to spring failure.

[0023] Reference Figures 2 to 4The buffer mechanism 4 includes a hollow cuboid 41. The hollow cuboid 41 serves as the main frame, and all buffer components rely on it for installation and coordinated operation. The rear end of the hollow cuboid 41 is fixedly connected to the front end of the sealing box 31. The sealing box 31 provides a support point for the hollow cuboid 41, enabling the buffer mechanism 4 to precisely align with the guardrail body and ensure effective force transmission. Two sliding blocks 42 are slidably connected to the inner wall of the hollow cuboid 41. The inner wall of the hollow cuboid 41 provides a sliding track for the sliding blocks 42, limiting their range of motion. Two... Each limiting rod 43 is rigidly supported by a hollow cuboid 41 to ensure stable position. The limiting rod 43 provides precise guidance for the sliding block 42 to prevent it from deviating during sliding and to ensure orderly buffering action. The inner walls of the two sliding blocks 42 are rotatably connected to connecting rods 44. By sliding, the connecting rods are rotated to realize the conversion of force direction. The connecting rods 44 convert the linear motion of the sliding blocks into the transmission of multi-angle forces, enhancing the force-bearing flexibility of the buffer mechanism 4. The outer walls of the two limiting rods 43 are fitted with springs 45. The limiting rods 43 provide deformation guidance for the springs to prevent them from twisting and failing. Specifically, in the buffer mechanism 4, the hollow cuboid 41 serves as the main frame supporting the various components. The sliding block 42, the limiting rod 43, the connecting rod 44, and the spring 45 work together to effectively buffer the impact force and flexibly transmit the force, preventing the buffering effect from decreasing due to force offset or component failure, and avoiding damage to the main body of the guardrail from impact.

[0024] Multiple support rods 46 are fixedly connected to the front end of the hollow cuboid 41. The hollow cuboid 41 provides vertical support to ensure structural stability. The support rods 46 extend forward and connect to the fixed plate 48, which is the direct carrier for transmitting the front impact force and maintaining the overall shape of the buffer mechanism 4. Springs 47 are sleeved on the outer wall of the multiple support rods 46. The support rods 46 provide the springs with installation reference and deformation space. The springs 47 are compressed when the support rods 46 are subjected to force, and buffer the external impact through elastic force. The front end of the multiple support rods 46 is fixedly connected to the fixed plate 48. The support rods 46 concentrate the dispersed support force to the fixed plate 48 and evenly distribute the external impact force to each support rod 46 to avoid damage caused by excessive local force. Specifically, the support rod 46 supported by the hollow cuboid 41, the spring 47 on its outer wall, and the fixing plate 48 at the front end work together to effectively receive, disperse, and buffer the impact force at the front end, preventing damage to components due to excessive local stress and ensuring the overall protective performance of the buffer mechanism 4 is stable.

[0025] Reference Figures 2 to 4A steel pipe 5 is fixedly connected to the inner wall of the fixing plate 48. The fixing plate 48 provides a stable installation platform for the steel pipe 5 and bears the impact force on the steel pipe 5 through its own rigid structure. A honeycomb tube 6 is fixedly connected to the inner wall of the steel pipe 5. The inner wall of the steel pipe 5 provides a wrapping protection for the honeycomb tube 6 and limits its deformation range. The honeycomb tube 6 uses a honeycomb porous structure to further decompose the impact force inside the steel pipe 5 and transform the concentrated stress into dispersed pressure. The two form a multi-layer buffer basic structure. Annular plates 7 are fixedly connected to both ends of the honeycomb tube 6. The two ends of the honeycomb tube 6 are sealed and fixed through the annular plates 7. The annular plates 7 provide end support for the honeycomb tube 6. Multiple tapered guide pins 8 are slidably connected to the inner walls of the two annular plates 7. The inner walls of the annular plates 7 provide sliding channels for the tapered guide pins 8 and guide them to move axially. Bi-directional compression springs 9 are fixedly connected to the outer walls of the multiple tapered guide pins 8. The bi-directional compression springs 9 on the outer walls of the tapered guide pins 8 expand and contract as they slide, and buffer the impact of the pin movement through elasticity. Specifically, the fixed plate 48, steel pipe 5, honeycomb tube 6, ring plate 7, tapered guide pin 8 and bidirectional compression spring 9 work together to achieve multi-level dispersion and buffering of impact force. By decomposing and concentrating stress layer by layer, it prevents deformation or damage to the front end of the guardrail due to instantaneous strong impact, thus enhancing the reliability of anti-collision protection.

[0026] The inner wall of clamp 36 is slidably connected to the outer wall of guide rod 371. The inner wall of clamp 36 slides along the outer wall of guide rod 371, which provides a precise linear motion trajectory. The bottom end of clamp 36 is slidably connected to the inner wall of sealing box 31, which provides bottom support and lateral limit. One end of spring 372 is fixedly connected to the inner wall of sealing box 31, which provides a stable force support point. The other end of spring 372 is fixedly connected to the outer wall of clamp 36. The elastic force of spring 372 provides reset power for clamp 36 and buffers the impact force when clamp 36 moves, ensuring uniform clamping force and improving the reliability of disassembly mechanism 3. Specifically, the clamp 36 slides along the guide rod 371 and the inner wall of the sealing box 31. With the help of the spring force of the spring 372, the clamp 36 can be opened and closed precisely and reset stably, ensuring that the clamping action is smooth and reliable, preventing clamping failure or component damage due to movement deviation or uneven force, and improving the operation accuracy and safety of the disassembly mechanism 3.

[0027] The left and right sides of spring 45 are fixedly connected to the adjacent side of two sliding blocks 42. The left and right sides of spring 45 are connected to two sliding blocks 42. Spring 45 expands and contracts with the relative movement of the sliding blocks. The inner wall of sliding block 42 is slidably connected to the outer wall of limiting rod 43. The inner wall of sliding block 42 slides along the outer wall of limiting rod 43. Limiting rod 43 provides rigid guidance. One end of spring 47 is fixedly connected to the front end of hollow cuboid 41. One end of spring 47 is fixed to the front end of hollow cuboid 41. Hollow cuboid 41 provides a fixed base. The other end of spring 47 is fixedly connected to the rear end of fixed plate 48. The other end of spring 47 is connected to the rear end of fixed plate 48. Spring 47 is compressed as fixed plate 48 is pushed back. The outer wall of support rod 46 is slidably connected to the inner wall of hollow cuboid 41. The outer wall of support rod 46 slides along the inner wall of hollow cuboid 41. Hollow cuboid 41 provides axial guidance. Specifically, spring 45, sliding block 42, limiting rod 43, spring 47, hollow cuboid 41, fixing plate 48 and support rod 46 work together to achieve effective absorption and transmission of impact force by the buffer mechanism 4, prevent component movement deviation or overload, and avoid buffer failure leading to damage to the guardrail.

[0028] The implementation principle of this application embodiment is as follows: When the disassembly mechanism 3 is working, the cylinder 32 inside the sealing box 31 is activated. The drive end of the cylinder 32 extends and retracts, causing the sliding block 33 to move. The sliding block 33 then drives the two connecting rods 34 on the inner wall to rotate. The connecting rods 34, through the fixed block 35 rotatably connected to the other end, push the clamp 36 fixed at the bottom end to complete the opening and closing action. At the same time, in the guide assembly 37 inside the sealing box 31, the guide rod 371 provides a precise sliding trajectory for the clamp 36 and restricts its direction of movement. The spring 372 sleeved on its outer wall extends and retracts with the sliding of the clamp 36, which not only buffers the impact force of the action, but also assists the clamp 36 to return to its original position when the cylinder is reset, thereby realizing stable clamping or convenient disassembly of the fixed column 2.

[0029] When the front end is subjected to an impact force, the inner wall of the steel pipe 5 provides a wrapping protection for the honeycomb tube 6, limiting its deformation range. The honeycomb tube 6 utilizes a honeycomb porous structure to further decompose the impact force inside the steel pipe 5, transforming concentrated stress into dispersed pressure. The two form a multi-layer buffer basic structure. The fixing plate 48 on the outer wall of the steel pipe 5 is pushed by the force to push the front-end fixed support rod 46 to slide along the inner wall of the hollow cuboid 41. The spring 47 on the outer wall of the support rod 46 is compressed accordingly, and the impact force is initially buffered through elastic deformation. At the same time, the impact force is transmitted to the sliding block 42 through the connecting rod 44, causing it to slide along the limiting rod 43 on the inner wall of the hollow cuboid 41. The spring 45 on the outer wall of the limiting rod 43 is compressed due to the proximity of the two sliding blocks 42, further absorbing the impact energy. The limiting rod 43 ensures the stability of the movement trajectory of the sliding block 42. Through the multi-level buffer structure, the impact force is gradually dissipated, effectively absorbing and dispersing the impact force, reducing the impact force on the vehicle, and reducing the risk of injury or death to the driver and passengers.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel structure bridge crash barrier, comprising concrete (1), characterized in that: The top of each concrete (1) is fixedly connected to two fixed columns (2), and the outer walls of the two fixed columns (2) are equipped with dismantling mechanisms (3), and the front ends of the two dismantling mechanisms (3) are equipped with buffer mechanisms (4). The disassembly mechanism (3) includes a sealing box (31), the inner wall of which is detachably connected to the outer wall of the fixed column (2), a cylinder (32) is fixedly connected to the inner wall of the sealing box (31), a sliding block (33) is fixedly connected to the driving end of the cylinder (32), two connecting rods (34) are rotatably connected to the inner wall of the sliding block (33), a fixed block (35) is rotatably connected to the other end of the two connecting rods (34), a clamp (36) is fixedly connected to the bottom end of the two fixed blocks (35), and a guide assembly (37) is fixedly connected to the inner wall of the sealing box (31).

2. The steel structure bridge crash barrier according to claim 1, characterized in that: The guide assembly (37) includes a guide rod (371), the left and right ends of which are fixedly connected to the inside of the sealed box (31), and a plurality of springs (372) are sleeved on the outer wall of the guide rod (371).

3. The steel structure bridge crash barrier according to claim 1, characterized in that: The buffer mechanism (4) includes a hollow cuboid (41). The rear end of the hollow cuboid (41) is fixedly connected to the front end of the sealed box (31). Two sliding blocks (42) are slidably connected to the inner wall of the hollow cuboid (41). Two limiting rods (43) are fixedly connected to the inner wall of the hollow cuboid (41). Connecting rods (44) are rotatably connected to the inner walls of the two sliding blocks (42). Springs (45) are sleeved on the outer walls of the two limiting rods (43). Multiple support rods (46) are fixedly connected to the front end of the hollow cuboid (41). Springs (47) are sleeved on the outer walls of the multiple support rods (46). A fixing plate (48) is fixedly connected to the front end of the multiple support rods (46).

4. A steel structure bridge crash barrier according to claim 3, characterized in that: A steel pipe (5) is fixedly connected to the inner wall of the fixed plate (48), a honeycomb tube (6) is fixedly connected to the inner wall of the steel pipe (5), and an annular plate (7) is fixedly connected to both ends of the honeycomb tube (6). Multiple tapered guide pins (8) are slidably connected to the inner walls of the two annular plates (7), and bidirectional compression springs (9) are fixedly connected to the outer walls of the multiple tapered guide pins (8).

5. A steel structure bridge crash barrier according to claim 2, characterized in that: The inner wall of the clamp (36) is slidably connected to the outer wall of the guide rod (371), and the bottom end of the clamp (36) is slidably connected to the inner wall of the sealing box (31).

6. A steel structure bridge crash barrier according to claim 2, characterized in that: One end of the spring (372) is fixedly connected to the inner wall of the sealing box (31), and the other end of the spring (372) is fixedly connected to the outer wall of the clamp (36).

7. A steel structure bridge crash barrier according to claim 3, characterized in that: The left and right sides of the second spring (45) are fixedly connected to the adjacent side of the two second sliding blocks (42), and the inner wall of the second sliding block (42) is slidably connected to the outer wall of the limiting rod (43).

8. A steel structure bridge crash barrier according to claim 3, characterized in that: One end of the spring three (47) is fixedly connected to the front end of the hollow cuboid (41), and the other end of the spring three (47) is fixedly connected to the rear end of the fixed plate (48). The outer wall of the support rod (46) is slidably connected to the inner wall of the hollow cuboid (41).

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