Anti-collision guardrail structure

Abstract

The utility model discloses an anti-collision guardrail structure which comprises a plurality of guardrail units spliced along the road side, each guardrail unit comprises a guardrail plate, the guardrail plates are fixed on the road side through stand columns, and each guardrail plate is of a rectangular energy absorption box structure formed by bending a steel plate for multiple times. The guardrail unit is simple in structure and low in cost, the guardrail plates and the stand columns of the guardrail unit are arranged to be of an energy absorption box structure, the good energy absorption effect is achieved during collision, the strength is high, and the driving safety can be effectively guaranteed; and machining is easy, dismounting and mounting are convenient and fast, the application range is wide, and good popularization prospects are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of anti-collision guardrail structures, belong to guardrail technical field. BACKGROUND

[0002] With the surge in road traffic, traffic accidents also show an upward trend. According to statistics, about 1.35 million people die in traffic accidents worldwide each year, of which 20% are related to guardrail failure, so guardrails are particularly important as passive safety facilities. Existing highway guardrails are mainly divided into rigid concrete guardrails, semi-rigid wave-shaped guardrails and flexible cable guardrails. Each type of guardrail has the following defects:

[0003] (1) Rigid concrete guardrails have high construction costs, long construction periods, and a collision acceleration peak of usually >20g, which poses a high risk of injury to passengers. Moreover, damaged guardrails cannot be repaired, and the replacement cost is high;

[0004] (2) Semi-rigid guardrails, such as wave-shaped beam guardrails, have low installation and maintenance costs, and have a certain energy absorption effect during a collision, so they are the most widely used. However, semi-rigid guardrails have slightly lower overall strength and can only absorb ≤40kJ of energy, with a fracture rate of >25% when a heavy vehicle collides, making them difficult to popularize in high-risk road sections;

[0005] (3) Flexible guardrails, such as cable guardrails, have a large lateral displacement (>1.5m), which can easily cause vehicles to jump over, and require tension adjustment at least twice a year, resulting in high maintenance frequency and cost.

[0006] Therefore, it is a technical problem to design an anti-collision guardrail structure that is easy to install, has high strength, and good energy absorption effect. INVENTION CONTENTS

[0007] In view of this, the purpose of the present utility model is to provide an anti-collision guardrail structure that can overcome the shortcomings of the prior art.

[0008] The purpose of the present utility model is achieved through the following technical solutions:

[0009] An anti-collision guardrail structure includes a plurality of guardrail units arranged along the roadside of the road, the guardrail unit includes a guardrail plate, the guardrail plate is fixed to the roadside by a stand, and the guardrail plate is a rectangular energy absorption box structure formed by bending a steel plate multiple times.

[0010] Further, an outer edge is left on the back of the rectangular energy absorption box structure, and an elastic deformation gap is left between the outer edge and the inner side plate; mounting holes are provided on both the outer edge and the inner side plate, allowing the rectangular energy absorption box structure to be connected to the stand by high-strength bolts inserted into the mounting holes.

[0011] Further, the rectangular energy absorption box structure is provided with a bolt fixing part opposite to the mounting hole position, the bolt head of the high-strength bolt is pre-fixed on the bolt fixing part, and the end away from the bolt head penetrates out of the back of the rectangular energy absorption box structure from inside to outside and is connected with the column.

[0012] Further, the bolt fixing part is a threaded seat, and the bolt head of the high-strength bolt is screwed and fixed on the threaded seat.

[0013] Further, the bolt fixing part is a limiting sleeve with an internal hexagonal clamping groove, the internal hexagonal clamping groove is matched with the bolt head of the high-strength bolt in size, and the bolt head of the high-strength bolt is clamped and fixed in the limiting sleeve.

[0014] Further, the column is a support column provided with an energy absorption cavity inside, the support column has a tapered structure with a narrow upper end and a wide lower end, the support column is provided with a waist round hole opposite to the mounting hole position at the upper end, and the support column is fixed on the roadside of the road through an anchor rod penetrating and arranged on a connecting flange at the bottom end.

[0015] Further, the support column has a circular, square or rectangular structure in cross section, and is an integral injection molding structure or an integral bending molding structure.

[0016] Further, the end cover structure is further arranged at the end of the rectangular energy absorption box structure of the guardrail unit at both ends of the roadside of the road.

[0017] Further, the column is further provided with a U-shaped damping frame, the U-shaped damping frame is provided with a through hole corresponding to the waist round hole, and the rectangular energy absorption box structure is fixed on the U-shaped damping frame through the high-strength bolt.

[0018] The utility model discloses the beneficial effect is:

[0019] The utility model discloses simple structure, low in cost, and the guardrail plate and column of guardrail unit are arranged into energy absorption box structure, and good energy absorption effect has when colliding, and high, can effectively guarantee the safety of driving, the guardrail plate and column are easy to process, and convenient and fast dismounting, and the application range is wide, and good popularization prospect has.

[0020] The roadbed main body has strong stability, bearing capacity and good waterproof and drainage performance, avoids settlement of the roadbed structure, improves the service life of the roadbed, and has good practicality and popularization prospect.

[0021] The other advantages, objects and features of the utility model will be described in the subsequent specification to some extent, and to some extent, it will be obvious to those skilled in the art based on the study of the following text or can be taught from the practice of the utility model. The objects and other advantages of the utility model can be realized and obtained by the following specification. Attached Figure Description

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0025] Figure 3 This is a schematic diagram of the side structure of the guardrail (Example 1);

[0026] Figure 4 A schematic diagram of the guardrail panel (Example 2);

[0027] Figure 5 This is a structural diagram of the column;

[0028] Figure 6 This is a schematic diagram of the structure of the present invention (Example 3).

[0029] In the diagram, 1 is the guardrail panel; 101 is the outer edge; 102 is the inner side panel; 103 is the mounting hole; 2 is the post; 201 is the oval hole; 202 is the connecting flange; 3 is the high-strength bolt; 4 is the threaded seat; 5 is the limit sleeve; 6 is the end cap structure; and 7 is the U-shaped shock absorber frame. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0031] Example 1

[0032] like Figures 1-4 As shown, a crash barrier structure includes multiple barrier units spliced ​​along the roadside. Each barrier unit includes a barrier panel 1, which is fixed to the roadside by a post 2. The barrier panel 1 is a rectangular energy-absorbing box structure formed by bending steel plates multiple times.

[0033] The rectangular energy absorption box structure is provided with an outer flange 101 at the back, and an elastic deformation gap is left between the outer flange 101 and the inner side plate 102. A through mounting hole 103 is formed in the outer flange 101 and the inner side plate 102, so that the rectangular energy absorption box structure is connected with the stand column 2 through high-strength bolts 3 threaded in the mounting hole 103. Since the elastic deformation gap is left between the outer flange 101 and the inner side plate 102, the outer flange 101 and the inner side plate 102 are elastically deformed to be attached after the high-strength bolts 3 are tightened, which not only improves the strength of the connecting part, but also has an anti-loosening effect on the high-strength bolts 3, improves the installation strength and stability. At the same time, the rectangular energy absorption box structure has good energy absorption effect, greatly improves the strength of the overall structure, and ensures good driving safety.

[0034] A bolt fixing part opposite to the position of the mounting hole 103 is arranged in the inner side of the rectangular energy absorption box structure, so that the bolt head of the high-strength bolt 3 is pre-fixed on the bolt fixing part, and the end away from the bolt head is threaded out of the back of the rectangular energy absorption box structure from the inside to the outside and connected with the stand column 2, which is more convenient and efficient.

[0035] The bolt fixing part is a threaded seat 4, and the bolt head of the high-strength bolt 3 is screwed and fixed on the threaded seat 4, and the end away from the bolt head is threaded out of the back of the rectangular energy absorption box structure from the inside to the outside.

[0036] The stand column 2 is a support column provided with an energy absorption cavity inside, and the support column has a tapered structure with a narrow upper end and a wide lower end. A waist round hole 201 opposite to the position of the mounting hole 103 is arranged at the upper end of the support column. The waist round hole structure can leave an installation allowance during installation of the guardrail plate 1, so that the installation is more convenient and fast, the machining precision is reduced, and the machining cost is reduced. A connecting flange 202 is arranged at the bottom end of the support column, so that the support column is fixed on the roadside of the road through an anchor rod threaded on the connecting flange 202.

[0037] The cross section of the support column can be circular, square or rectangular structure, which can be an integral injection molding structure or an integral bending molding structure. The structure has high strength and low manufacturing cost.

[0038] An end cover structure 6 is further arranged at the end of the rectangular energy absorption box structure of the guardrail unit at both ends of the roadside. The end cover structure 6 can be connected with the end of the rectangular energy absorption box structure through welding, clamping or bolt connection. It can prevent vehicles from directly impacting the end of the guardrail, reduce injury, and guide the vehicle to smoothly transition.

[0039] Embodiment 2

[0040] As Figure 5As shown, on the basis of example 1, the bolt fixing part is a limiting sleeve 5 with an internal hexagonal clamping groove, the internal hexagonal clamping groove is matched with the bolt head of the high-strength bolt 3 in size, the bolt head of the high-strength bolt is clamped in the limiting sleeve 5, and the end away from the bolt head is out of the back of the rectangular energy absorption box structure from inside to outside, and then is connected with the stand 2, convenient and efficient installation.

[0041] Example 3

[0042] As Figure 6 shown, on the basis of examples 1 and 2, the U-shaped shock-absorbing frame 7 is further provided on the stand 2, the U-shaped shock-absorbing frame 7 is provided with a through hole corresponding to the waist round hole 201, and the rectangular energy absorption box structure is fixed on the U-shaped shock-absorbing frame 7 through the high-strength bolt 3, so that the connection strength and the shock-absorbing effect are better.

[0043] The above is only a preferred embodiment of the present application, and does not make any form of security restrictions on the present application. Any simple modification, equivalent change and modification of the above embodiment without departing from the technical solution content of the present application, according to the technical essence of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A crash barrier structure comprising a plurality of barrier units arranged in series along a roadside of a road, characterized in that, The guardrail unit comprises a guardrail plate (1) fixed to the roadside by a column (2), wherein the guardrail plate (1) is a rectangular energy-absorbing box structure formed by multiple bending of a steel plate.

2. The crashworthy guardrail structure according to claim 1, wherein An outer flange (101) is left at the back of the rectangular energy-absorbing box structure, and an elastic deformation gap is left between the outer flange (101) and an inner side plate (102); a through mounting hole (103) is formed in the outer flange (101) and the inner side plate (102), so that the rectangular energy-absorbing box structure is connected to the column (2) by a high-strength bolt (3) inserted into the mounting hole (103).

3. The crashworthy guardrail structure according to claim 2, wherein A bolt fixing portion opposite to the position of the mounting hole (103) is arranged inside the rectangular energy-absorbing box structure, so that one end of the bolt head of the high-strength bolt (3) is pre-fixed on the bolt fixing portion, and the other end away from the bolt head is inserted out of the back of the rectangular energy-absorbing box structure from inside to outside, and connected to the column (2).

4. The crashworthy guardrail structure according to claim 3, wherein The bolt fixing portion is a threaded seat (4), and one end of the bolt head of the high-strength bolt (3) is screwed and fixed on the threaded seat (4).

5. The crashworthy guardrail structure according to claim 3, wherein The bolt fixing portion is a limiting sleeve (5) with an internal hexagonal slot, and the size of the internal hexagonal slot is matched with the bolt head of the high-strength bolt (3), so that the bolt head of the high-strength bolt is clamped in the limiting sleeve (5).

6. The crashworthy guardrail structure according to claim 2, wherein The column (2) is a support column with an energy-absorbing cavity inside, and the support column has a tapered structure with a narrow upper end and a wide lower end; a waist round hole (201) opposite to the position of the mounting hole (103) is arranged at the upper end of the support column, and a connecting flange (202) is arranged at the bottom end of the support column; the support column is fixed to the roadside of the road by an anchor rod inserted into the connecting flange (202).

7. The crashworthy guardrail structure according to claim 6, wherein The cross section of the support column is circular, square or rectangular structure, which is an integral injection molding structure or an integral bending molding structure.

8. A crashworthy guardrail structure as claimed in any one of claims 1 to 7, wherein, An end cover structure (6) is further arranged at the end of the rectangular energy-absorbing box structure of the guardrail unit at both ends of the roadside of the road.

9. The crashworthy guardrail structure according to claim 8, wherein A U-shaped shock-absorbing frame (7) is further arranged on the column (2), and a through hole corresponding to the waist round hole (201) is arranged on the U-shaped shock-absorbing frame (7); the rectangular energy-absorbing box structure is fixed on the U-shaped shock-absorbing frame (7) by the high-strength bolt (3).

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