Multi-stage buffering road guardrail

Abstract

The utility model discloses a multistage buffer road guardrail, which comprises two upright posts and a plurality of breast board components arranged between the two upright posts, the upright posts are fixed on the ground, a cross beam is fixedly connected between the two upright posts, the breast board components are fixed on the cross beam through buffer seats, and the buffer seats are fixed on the cross beam. The breast board assembly comprises a corrugated board and an energy absorption protection board. The breast board assembly further comprises a plurality of sets of buffering parts arranged between the corrugated board and the energy absorption protection board, and each buffering part comprises a buffering block fixed to the corrugated board and a spring fixed to the energy absorption protection board. Every two adjacent breast board assemblies are connected through a hinge seat, and the space between every two adjacent breast board assemblies is further filled with an elastic board. The buffering seat comprises a supporting plate and two buffering plates fixedly connected to one side of the supporting plate, and the buffering plates are provided with bent arc structures and are obliquely arranged. According to the guardrail, impact energy is gradually absorbed and dispersed through the multi-stage buffer structure, and injuries to the vehicle and people in the vehicle are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of traffic facilities, and particularly relates to a multi-stage buffer road guardrail. Background Art

[0002] As an important traffic safety barrier on roads, the guardrail should not only fully absorb the impact energy and effectively reduce the peak acceleration during collision, but also guide the deviated vehicle to prevent it from going out of the road.

[0003] The corrugated guardrail is a combined corrugated plate movable steel guardrail used at the opening of the central isolation belt of a road. The guardrail consists of corrugated steel guardrail plates and two columns fixedly clamped between them. The two columns are fixedly clamped between two corrugated steel guardrail plates. During normal operation of the road, the guardrail can be conveniently inserted into the pre-set insertion holes at the opening by inserting and pulling out the columns, playing a role of isolation and protection. When a vehicle collides with it, due to the good collision resistance and energy absorption of the corrugated steel guardrail plate, it is not easy to be damaged, and at the same time, it can play a good protective role for the vehicle and the driver and passengers.

[0004] However, with the road reconstruction, expansion, and the increase in the proportion of heavy vehicles and freight traffic flow, the buffer capacity of the early-built corrugated guardrails can no longer match the current traffic flow. If all the existing corrugated guardrails are replaced, it is neither economical nor will it affect traffic for a long time. Therefore, it is of great significance to study the improvement of the capacity of existing guardrails. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-stage buffer road guardrail, which can effectively absorb the impact energy during vehicle collision, thereby reducing the injuries of the vehicle and the people in the vehicle.

[0006] The technical solution adopted by the utility model to solve the above problems is: a multi-stage buffer road guardrail, including two columns and a plurality of railing assemblies arranged between the two columns. The columns are fixed to the ground, and a cross beam is fixedly connected between the two columns. The railing assemblies are fixed to the cross beam through buffer seats, and the railing assemblies include corrugated plates and energy-absorbing guard plates.

[0007] Preferably: the railing assembly further includes a plurality of groups of buffer components arranged between the corrugated plate and the energy-absorbing guard plate. The buffer components include buffer blocks fixed to the corrugated plate and springs fixed to the energy-absorbing guard plate. The buffer blocks are adapted to the concave contour of the corrugated plate close to the energy-absorbing guard plate, and one end of the buffer block is fixedly connected to the energy-absorbing guard plate through a spring.

[0008] Preferably: adjacent two railing assemblies are connected through a hinge seat, and an elastic plate is also filled between the two railing assemblies.

[0009] Preferably, the upper and lower edges of the corrugated plate are screwed to the energy-absorbing guard plate, and the buffer member is disposed in a closed cavity formed by the combination of the edges of the elastic plate and the corrugated plate.

[0010] Preferably, the buffer seat includes a support plate and two buffer plates connected and fixed to one side of the support plate. The support plate is threadedly connected to the energy-absorbing guard plate. One end of the buffer plate is welded to the cross beam. The buffer plate is provided with a curved arc structure, and the curved arc structure deforms when impacted.

[0011] Preferably, the buffer plate is obliquely arranged, and the end of the buffer plate connected to the support plate is at a high position.

[0012] Preferably, the column is made of I-beam, and the cross beam is made of angle steel. The width of the side of the angle steel is smaller than the width of the web of the I-beam, and the end of the angle steel is welded or screwed to the I-beam.

[0013] Preferably, the interior of the energy-absorbing guard plate adopts a honeycomb hole structure and is made of fiberglass material.

[0014] Preferably, a blocking block is provided at the connection between the column and the railing assembly.

[0015] Compared with the prior art, the present invention has the following advantages and effects:

[0016] The road guardrail of the present invention adopts a multi-stage buffer design, including multiple components such as corrugated plates, energy-absorbing guard plates, buffer members, cross beams, columns, etc. When a vehicle collides, the impact energy can be gradually absorbed and dispersed through the multi-stage buffer structure, effectively reducing the injuries suffered by the vehicle and the occupants inside; by setting a combination of buffer blocks and springs between the corrugated plate and the energy-absorbing guard plate, the guardrail can absorb energy more efficiently when impacted, relieve the impact force, and reduce the risk of injury to the vehicle and the occupants; the buffer plate is provided with a curved arc structure and is obliquely arranged. When the guardrail is impacted, the downward impact component force can be transmitted to the ground, enhancing the strength of the overall structure, preventing the vehicle from turning out from one side of the guardrail, and improving safety; hinge seats and elastic plates are provided between adjacent railing assemblies. When the vehicle collides, through the deformation of the hinge seats and the buffering effect of the elastic plates, the intrusion degree of the railing assembly into the vehicle is reduced, effectively protecting the safety of the vehicle and the occupants inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the multi-stage buffer road guardrail according to an embodiment of the present invention.

[0018] Figure 2 is a perspective view of the multi-stage buffer road guardrail according to an embodiment of the present invention.

[0019] Figure 3 is a top view of the multi-stage buffer road guardrail according to an embodiment of the present invention.

[0020] Figure 4 Yes Figure 3 It is the A-A cross-sectional view of the multi-stage buffer road guardrail.

[0021] Figure 5 It is the cross-sectional view of the panel assembly of the embodiment of the present utility model.

[0022] Figure 6 It is the structural schematic diagram of the buffer seat of the embodiment of the present utility model.

[0023] Figure 7 It is the structural schematic diagram of the hinge seat of the embodiment of the present utility model.

[0024] Reference numerals in the drawings: column 1, cross beam 2, panel assembly 3, corrugated plate 31, energy-absorbing guard plate 32, buffer seat 4, support plate 41, buffer plate 42, arc structure 43, buffer component 5, buffer block 51, spring 52, elastic plate 6, hinge seat 7, wing plate 71, pin shaft 72, anti-collision block 8. Specific embodiments

[0025] The present utility model will be further described in detail below in conjunction with the drawings and through embodiments. The following embodiments are explanations of the present utility model and the present utility model is not limited to the following embodiments.

[0026] Embodiment 1:

[0027] See Figure 1 – Figure 4 , in this embodiment, a multi-stage buffer road guardrail is involved, which is specifically used to absorb the energy during vehicle collision (reduce the peak acceleration during collision), thereby reducing the damage to the vehicle and the occupants in the vehicle. Specifically, it includes: two columns 1 and a plurality of panel assemblies 3 arranged between the two columns 1. The columns 1 are fixed to the ground, a cross beam 2 is fixedly connected between the two columns 1, the panel assemblies 3 are fixed to the cross beam 2 through buffer seats 4, and the panel assemblies 3 include corrugated plates 31 and energy-absorbing guard plates 32.

[0028] Specifically, in this embodiment, a cross beam 2 is provided between two columns 1, and the cross beam 2 is fixedly connected to an energy-absorbing guard plate 32 through a buffer seat 4. One side of the energy-absorbing guard plate 32 is fixedly connected to a corrugated plate 31. Compared with the traditional corrugated guardrail, when the present utility model is impacted by a vehicle, generally, the impacted corrugated plate 31 first plays a first buffering role on the vehicle, and the energy-absorbing guard plate 32 located inside the plate body of the corrugated plate 31 is synchronously impacted to generate a second buffering role; the impacted side causes the entire energy-absorbing guard plate 32 to move backward under the action of force, and at this time, the buffer seat 4 located behind the energy-absorbing guard plate 32 is impacted to achieve a third buffering role; the buffer seat 4 is fixed on the cross beam 2, and the cross beam 2 is bent and deformed after being impacted to absorb the impact energy, forming a fourth buffering role; both ends of the cross beam 2 are fixed on the column 1, and after the cross beam 2 is impacted, the buffered force is finally transmitted to the column 1. The column 1 in this embodiment can be fixed to the ground by means of plugging, anchoring, etc., forming a complete buffer integral structure. The present utility model gradually absorbs and disperses the impact energy through a multi-stage buffer structure, effectively reducing the harm to the vehicle and the personnel in the vehicle, and at the same time having good deformation ability and strength, and being able to adapt to impacts of different degrees.

[0029] See Figure 4 , in this embodiment, the column 1 is made of I-beam, and the cross beam 2 is made of angle steel. The width of the side of the angle steel is less than the width of the web of the I-beam, and the end of the angle steel is connected to the I-beam by welding or screwing, ensuring the stability and strength of the structure. The inside of the energy-absorbing guard plate 32 adopts a honeycomb hole structure, which is made of fiberglass material. This structure not only reduces the weight of the guardrail, but also has high strength and good energy absorption effect. A blocking block 8 is provided at the connection between the column 1 and the railing assembly 3, further improving the safety performance of the guardrail.

[0030] See Figure 5 , in this embodiment, the railing assembly 3 further includes a plurality of groups of buffer components 5 provided between the corrugated plate 31 and the energy-absorbing guard plate 32. The buffer components 5 include buffer blocks 51 fixed on the corrugated plate 31 and springs 52 fixed on the energy-absorbing guard plate 32. The buffer blocks 51 are adapted to the concave side contour of the corrugated plate 31 close to the energy-absorbing guard plate 32, and one end of the buffer block 51 is fixedly connected to the energy-absorbing guard plate 32 through a spring 52. Under the combined action of the buffer blocks 51 and the springs 52, the impact energy can be further absorbed, improving the overall buffering effect of the railing assembly 3.

[0031] See Figure 7, in this embodiment, two adjacent railing components 3 are connected by a hinge seat 7. The hinge seat 7 includes wing plates 71 fixedly connected to the outside of the energy-absorbing guard plate 32, which extend outward alternately, causing the railing components 3 to protrude and the wing plates 71 to cross. Inserting a pin shaft 72 can effectively connect adjacent guardrails. When the wing plates 71 are impacted, the impact force can be transmitted to other railing components 3 through the hinge seat 7, and a certain amount of impact energy can be absorbed through deformation during the collision. Even if the pin shaft 72 is tilted, the railing components 3 can undergo torsional displacement, generating a certain buffering effect on the uncontrollable impact force of the vehicle, greatly reducing the damage caused by the collision. An elastic plate 6 is also filled between the two railing components 3. When the guardrail is impacted, due to the hinge seat 7, an instantaneous angular acceleration can be generated between the adjacent railing components 3. The end of the railing component 3 is a weak area. Through the setting of the elastic plate 6, the impact during the relative swing between the railing components 3 can be alleviated, enhancing the protection of the end of the railing component 3. When the vehicle directly impacts the end of the railing component 3, the combined buffering effect of the elastic plate 6 and the hinge seat 7 enables the adjacent railing components to fold and collapse (see Figure 3 ), which can reduce the intrusion degree of the railing components into the vehicle and reduce the harm to the vehicle and the occupants inside.

[0032] See Figure 6 , in this embodiment, the buffer seat 4 includes a support plate 41 and two buffer plates 42 fixedly connected to one side of the support plate 41. The support plate 41 is threadedly connected to the energy-absorbing guard plate 32, and one end of the buffer plate 42 is welded to the cross beam 2. The buffer plate 42 is provided with an arc-shaped structure 43, and the arc-shaped structure 43 deforms when impacted, thereby absorbing part of the impact energy. The buffer plate 42 is obliquely arranged, and the end of the buffer plate 42 connected to the support plate 41 is at a high position, which can transmit the downward impact component received by the guardrail component during the vehicle collision through the buffer plate 42, the cross beam 2, and the column 1 to the ground finally, enhancing the strength of the overall structure, being able to prevent the vehicle from turning out from one side of the guardrail to a certain extent, and improving the safety.

[0033] The above content described in this specification is only an example of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the content of this specification of the present utility model or exceed the scope defined by this claims, they should all belong to the protection scope of the present utility model.

Claims

1. A multi - level buffer road guardrail, comprising two columns and a plurality of railing assemblies arranged between the two columns, characterized in that: The described upright columns are fixed to the ground, and a cross beam is fixedly connected between two upright columns. The railing panel assembly is fixed to the cross beam through a buffer seat. The railing panel assembly includes a corrugated plate and an energy-absorbing guard plate. The railing panel assembly further includes several groups of buffer components arranged between the corrugated plate and the energy-absorbing guard plate. The buffer components include buffer blocks fixed to the corrugated plate and springs fixed to the energy-absorbing guard plate. The buffer blocks are adapted to the concave side contour of the corrugated plate close to the energy-absorbing guard plate, and one end of the buffer block is fixedly connected to the energy-absorbing guard plate through a spring.

2. The multi-stage buffer road guardrail according to claim 1, wherein: Adjacent two of the railing panel assemblies are connected through a hinge seat, and an elastic plate is also filled between the two railing panel assemblies.

3. The multi-stage buffer road guardrail according to claim 2, characterized in that: The upper and lower edges of the corrugated plate are screwed to the energy-absorbing guard plate, and the buffer components are arranged in a closed cavity formed by the combination of the elastic plate and the edge of the corrugated plate.

4. The multi - stage buffer road guardrail according to claim 1, characterized in that: The buffer seat includes a support plate and two buffer plates fixedly connected to one side of the support plate. The support plate is threadedly connected to the energy-absorbing guard plate. One end of the buffer plate is welded to the cross beam. The buffer plate is provided with an arc-shaped structure that deforms when impacted.

5. The multi-stage buffer road guardrail according to claim 4, characterized in that: The buffer plate is obliquely arranged, and the end of the buffer plate connected to the support plate is at a high position.

6. The multi-stage buffer road guardrail according to claim 1, wherein: The upright columns are made of I-beams, and the cross beam is made of angle steel. The width of the side of the angle steel is less than the width of the web of the I-beam, and the end of the angle steel is welded or screwed to the I-beam.

7. The multi-stage buffer road guardrail according to claim 1, characterized in that: The interior of the energy-absorbing guard plate adopts a honeycomb hole structure and is made of fiberglass material.

8. The multi-stage buffer road guardrail according to claim 1, characterized in that: A blocking block is arranged at the connection between the upright column and the railing panel assembly.

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