Protective fence for highway bridge

Abstract

The utility model relates to the field of highway bridge facilities, in particular to a highway bridge protective fence which comprises a supporting column, a plurality of protective fences are installed in the middle of the supporting column, an installation groove is formed in the bottom of the supporting column, a plurality of metal dampers are installed on one side of the inner wall of the installation groove, and a plurality of buffer springs are arranged on the side, away from the metal dampers, of the installation groove. Wherein one side of the metal damper and one side of the buffer spring are both connected with a connecting block, and a buffer block is arranged on one side of the connecting block and protrudes out of the outer wall of the supporting column. According to the utility model, when the supporting column is impacted, the protruding buffer block arranged at the bottom of the supporting column moves towards the interior of the mounting groove, a basic buffer protection function is achieved through the arrangement of the metal damper and the buffer rubber pad, and meanwhile, when the collision force reaches a certain degree, the metal damper is damaged, and the buffer spring is released, so that the supporting column is protected. And the impact force is effectively buffered, the dispersion effect on the impact force is effectively improved, and the overall buffering performance of the guardrail is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway bridge facilities, in particular to a guardrail for highway bridges. Background Art

[0002] Highway bridge projects include the main bridge project and the ancillary engineering facilities in the overall bridge location. There are many ancillary engineering facilities, such as revetments, guide dikes, guardrails, sidewalk railings, etc.

[0003] At present, traditional bridge guardrails can already meet the basic protection and isolation requirements. However, in the actual use process, the buffering performance of some traditional guardrails against the impact force is poor. Their support columns (bases) cannot decompose the impact force, and after being directly hit by a vehicle, it will cause the seat body to split and detach, etc. Therefore, there is an urgent need for a guardrail for highway bridges. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies in the prior art and provide a guardrail for highway bridges.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A guardrail for highway bridges includes support columns. A plurality of guardrails are installed in the middle of the support columns, and an installation groove is opened at the bottom of the support columns. A plurality of metal dampers are installed on one side of the inner wall of the installation groove, and a plurality of buffer springs are provided on the side far from the metal dampers. One side of each of the metal dampers and the buffer springs is connected to a connection block, and a buffer block is provided on one side of the connection block;

[0007] A plurality of installation holes are opened in the middle of the buffer block, and a plurality of support rods are correspondingly installed in the installation holes. A plurality of vertical rods are equidistantly arranged and installed between the support rods, and a rubber airbag is rotatably installed on the outer wall of the vertical rods.

[0008] In addition, the preferred structure is that a plurality of buffer springs are fixedly installed on one side of the inner wall of the installation groove, and a pair of metal dampers are installed on both sides far from the buffer springs.

[0009] In addition, the preferred structure is that one end of the buffer spring is fixedly installed with a mounting plate, one end of the mounting plate is fixedly connected with a buffer rubber pad, and the buffer rubber pad is in extrusion contact with the inner wall of the connection block.

[0010] In addition, the preferred structure is that limiting grooves are opened at the upper and lower parts of the installation groove, and limiting blocks are installed in the limiting grooves in a limited sliding manner. The limiting blocks are installed on one side of the upper and lower ends of the connection block.

[0011] In addition, a preferred structure is that one end of the buffer block protrudes from the outer wall of the support column, and the other end is slidably installed in the installation groove through the limit block.

[0012] In addition, a preferred structure is that in the natural state of the limit block, one side of the limit block is in tight contact with the inner wall of the limit groove.

[0013] In addition, a preferred structure is that in the natural state, the buffer spring is in a compressed state, and the buffer spring is indirectly in contact with the connecting block through the buffer rubber pad.

[0014] The beneficial effects of the present utility model are as follows:

[0015] In the present utility model, when the support column is impacted, the buffer block protruding from the bottom of the support column moves into the installation groove, and the metal damper and the buffer rubber pad are provided to play a basic buffer protection function. At the same time, when the collision force reaches a certain level, the metal damper is damaged and the buffer spring is released, and the impact force is effectively buffered, effectively improving the dispersion effect of the impact force and enhancing the overall buffer performance of the guardrail.

[0016] At the same time, by providing corresponding rubber air bags on the support rods and vertical rods, after a collision occurs, the rubber air bags are forced to rotate, and due to the characteristics of their rubber material, the impact force can be effectively absorbed and the force received can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall connection structure of a guardrail for a highway bridge proposed by the present utility model;

[0018] Figure 2 is a schematic diagram of the support column structure proposed by the present utility model;

[0019] Figure 3 is a schematic diagram of the internal structure of the support column proposed by the present utility model;

[0020] Figure 4 is a cross-sectional view of the internal structure of the support column proposed by the present utility model;

[0021] Figure 5 is a schematic diagram of the connection structure of the buffer block proposed by the present utility model;

[0022] Figure 6 is a schematic diagram of the connection structure of the support rod proposed by the present utility model.

[0023] In the figure: 1 support column, 2 guardrail rod, 3 buffer block, 31 limit block, 32 connecting block, 4 installation groove, 5 metal damper, 6 buffer spring, 61 mounting plate, 7 buffer rubber pad, 8 limit groove, 9 support rod, 91 vertical rod, 10 rubber air bag. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Refer to Figures 1-6 , a guardrail for a highway bridge, including a support column 1. A plurality of guardrails 2 are installed in the middle of the support column 1, and an installation groove 4 is opened at the bottom of the support column 1. A plurality of metal dampers 5 are installed on one side of the inner wall of the installation groove 4, and a plurality of buffer springs 6 are provided on the side away from the metal dampers 5. One side of each of the metal dampers 5 and the buffer springs 6 is connected to a connection block 32, and a buffer block 3 is provided on one side of the connection block 32.

[0026] Further, a plurality of installation holes are opened in the middle of the buffer block 3, and a plurality of support rods 9 are correspondingly installed in the installation holes. A plurality of vertical rods 91 are installed at equal intervals between the support rods 9. A rubber airbag 10 is rotatably installed on the outer wall of the vertical rod 91. A corresponding bearing member is provided in the middle of the rubber airbag 10 to connect the support rod 9. When a collision occurs, the rubber material of the rubber airbag 10 absorbs the impact force and rotates after the collision to reduce the force.

[0027] Further, a plurality of buffer springs 6 are fixedly installed on one side of the inner wall of the installation groove 4, and a pair of metal dampers 5 are installed on both sides away from the buffer springs 6. The metal dampers 5 can effectively absorb and disperse the impact force, ensuring the basic buffering performance of the buffer block 3.

[0028] Further, one end of the buffer spring 6 is fixedly installed with an installation plate 61, and one end of the installation plate 61 is fixedly connected with a buffer rubber pad 7. The buffer rubber pad 7 is in pressing contact with the inner wall of the connection block 32.

[0029] Further, limiting grooves 8 are opened at the upper and lower parts of the installation groove 4, and limiting blocks 31 are installed in the limiting grooves 8 in a limiting sliding manner. The limiting blocks 31 are installed on one side of the upper and lower ends of the connection block 32.

[0030] Further, one end of the buffer block 3 protrudes from the outer wall of the support column 1, and the other end is installed in the installation groove 4 in a limiting sliding manner through the limiting block 31. At the same time, in the natural state, one side of the limiting block 31 is in tight contact with the inner wall of the limiting groove 8.

[0031] In this embodiment, multiple guardrails 2 are arranged between the support columns 1 to achieve the maintenance and protection functions of the foundation. At the same time, during actual use, when directly impacted by a vehicle, the impact point of the vehicle will concentrate on the middle part of the support column 1, that is, the buffer block 3. The buffer block 3 is impacted and slightly moves into the installation groove 4. At the same time, since the buffer block 3 is directly connected to the metal damper 5, the impact force is transmitted to the metal damper 5 through the buffer block 3. The metal damper 5, due to its structural characteristics, can enter the yield state earlier when subjected to an external force, and dissipate the external impact force through cumulative plastic deformation. At the same time, cooperating with the buffer rubber pad 7 can effectively improve the protection and buffering functions against low impact forces.

[0032] Among them, during actual use, when the impact force reaches a certain intensity, the metal damper 5 can no longer disperse the impact force, causing the metal damper 5 to be damaged and deformed. At this time, the pre-compressed buffer spring 6 is released, and the resulting resilience, combined with the buffer rubber pad 7, can effectively buffer the impact force.

[0033] Among them, during actual use, when the strut is impacted, the rubber material of the rubber bladder 10 can effectively absorb the impact force, and the rubber bladder 10 rotates with the moving collision object after being impacted, and effectively diverges the impact force, reducing the direct force on the rod body.

[0034] Among them, a through hole is provided in the middle of the rubber bladder 10 to be sleeved on the vertical rod 91, thereby realizing the rotation effect. This concept is easy to understand intuitively and will not be explained here.

[0035] Among them, it is worth noting that the metal damper 5 includes a pair of special metal materials, specifically mild steel, which has good mechanical properties and damping characteristics. Its material has a low yield strength and good ductility, and can enter the yield state earlier when subjected to an external force, and dissipate the energy generated by the external load through cumulative plastic deformation. The specific buffer principles and structures not detailed above are all well-known common knowledge to those skilled in the art and will not be elaborated here.

[0036] In the present utility model, when the support column 1 is impacted, the protruding buffer block 3 at the bottom of the support column 1 moves into the installation groove, and the buffer protection function of the foundation is achieved through the settings of the metal damper 5 and the buffer rubber pad 7. At the same time, when the collision force reaches a certain level, the metal damper 5 is damaged and the buffer spring 6 is released, and the impact force is effectively buffered, effectively improving the dispersion effect of the impact force and enhancing the overall buffer performance of the guardrail.

[0037] Meanwhile, corresponding rubber air bags 10 are provided on the support rod 9 and the vertical rod 91. After a collision occurs, the rubber air bags 10 are forced to rotate, and due to the characteristics of their rubber material, they can effectively absorb the impact force and reduce the force received.

[0038] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A guardrail for a highway bridge, comprising a support column (1), characterized in that: A plurality of guardrails (2) are installed in the middle of the support column (1), and a mounting groove (4) is provided at the bottom of the support column (1), a plurality of metal dampers (5) are installed on one side of the inner wall of the mounting groove (4), and a plurality of buffer springs (6) are provided on the side away from the metal dampers (5), wherein one side of the metal dampers (5) and the buffer springs (6) are both connected to a connecting block (32), and a buffer block (3) is provided on one side of the connecting block (32); A plurality of mounting holes are provided in the middle of the buffer block (3), a plurality of support rods (9) are correspondingly mounted in the mounting holes, a plurality of vertical rods (91) are equidistantly arranged between the support rods (9), and a rubber bladder (10) is rotatably mounted on the outer wall of the vertical rod (91).

2. A highway bridge guardrail according to claim 1, characterized in that: A plurality of buffer springs (6) are fixedly mounted on one side of the inner wall of the mounting groove (4), and a pair of metal dampers (5) are mounted on two sides away from the buffer springs (6).

3. A highway bridge guardrail according to claim 2, characterized in that: One end of the buffer spring (6) is fixedly mounted with a mounting plate (61), one end of the mounting plate (61) is fixedly connected with a buffer rubber pad (7), and the buffer rubber pad (7) is in compression contact with the inner wall of the connection block (32).

4. A highway bridge guardrail according to claim 1, characterized in that: The upper and lower parts of the installation groove (4) are both provided with limit grooves (8), and the limit blocks (31) are installed in the limit grooves (8) in a limit sliding manner. The limit blocks (31) are installed on one side of the upper and lower ends of the connection blocks (32).

5. A highway bridge guardrail according to claim 1, characterized in that: One end of the buffer block (3) protrudes from the outer wall of the support column (1), and the other end is slidably mounted in the mounting groove (4) via a limiting block (31).

6. A highway bridge guardrail according to claim 5, characterized in that: When the limiting block (31) is in a natural state, one side of the limiting block (31) is in tight contact with the inner wall of the limiting groove (8).

7. A highway bridge guardrail according to claim 1, characterized in that: The buffer spring (6) is in a compressed state in a natural state, and the buffer spring (6) is in indirect contact with the connection block (32) via the buffer rubber pad (7).

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