A fiber-reinforced composite material guardrail system and production process

Abstract

The present invention discloses a fiber reinforced composite material guardrail system and production process, including guardrails, columns and barrier blocks. The guardrails are fiber reinforced composite material elastic sheets, and the cross section of the guardrails is a continuous three-wave and open semi-closed structure; extensions extend at the two outermost wave end points of the guardrail, and the extensions include an arc portion and a straight portion; adjacent guardrails are overlapped along the scale; the barrier blocks are provided with a supporting structure; the product can be overlapped by itself and can also be replaced with a single plate of the same specification steel plate, and can provide good protection effect; the extensions can provide better elastic support and enhance the connection strength between the guardrail and the pins, and the pultrusion process can increase the local strength of the elastic sheet while producing at low cost, and cooperate with the strength structure design to achieve economy while meeting strength requirements.

Description

Technical Field

[0001] The present invention belongs to the technical field of polymer composite material applications, and in particular relates to a fiber-reinforced composite material guardrail system and a production process. Background Art

[0002] Guardrails are mainly used to protect personal safety and equipment facilities in residential areas, highways, commercial areas, public places and other places. The main form of highway guardrails is semi-rigid guardrails, which are a strip-shaped protective energy-absorbing structure installed on the outside of the highway lane or the central dividing strip. When an accident vehicle collides with the guardrail, it absorbs the collision energy by blocking, the guardrail itself deforms, or the vehicle climbs up to buffer and guide, thereby blocking the vehicle and reducing the degree of injury to the driver and passengers.

[0003] The semi-rigid guardrails in my country's highway guardrail standards generally use three-corrugated steel plates. Traditional highway composite guardrails are of low grade and difficult to install and maintain. Continuous fiber composite materials are an inorganic non-metallic material with excellent performance, good insulation, strong heat resistance, and high mechanical strength. However, continuous fiber composite materials have not yet been effectively applied to guardrails. Summary of the Invention

[0004] The present invention provides a fiber-reinforced composite material guardrail system and production process. The product can be overlapped with itself and can also be replaced with single plates of steel plates of the same specification, and can provide good protective effect. The extension part can provide better elastic support and enhance the connection strength between the guardrail and the pin. The pultrusion process can increase the local strength of the elastic sheet while achieving low-cost production. Combined with the strength structure design, it can achieve economy while meeting strength requirements, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fiber-reinforced composite guardrail system, comprising a guardrail and a column, and also comprising an anti-obstruction block, wherein the guardrail is a fiber-reinforced composite elastic sheet, and the cross-section of the guardrail is a continuous three-wave and open semi-closed structure; the two outermost wave end points of the guardrail are S-shaped and extend outwardly, and the extension portion includes an arc portion and a straight portion, and the arc portion converges to the trough and then connects to the straight portion, and the straight portion continues to extend outward at a small angle to the end of the trough, and the two ends of the guardrail do not intersect or overlap; adjacent guardrails are overlapped in parallel; the anti-obstruction block is provided with a supporting structure that cooperates with the extension portion and limits it, and the overlap of adjacent guardrails is fastened to the trough, the anti-obstruction block and the straight portion by pins; the anti-obstruction block is fixed to the top of the column.

[0006] Preferably, the anti-obstruction block includes a main horizontal plate, and a first vertical plate perpendicular to the main horizontal plate is welded at the end of the main horizontal plate, and the first vertical plate is clamped between the trough and the straight part, and the two ends of the first vertical plate are bent toward the arc-shaped part and pressed inside it, and second vertical plates are welded on both sides of the middle part of the main horizontal plate, and the ends of the second vertical plate are bent toward the arc-shaped part and pressed outside it, and the end of the main horizontal plate is bent and fixed to the column, and the guardrail trough, the first vertical plate, the straight part and the second vertical plate are fastened by pins.

[0007] Preferably, the cross section of the column is C-shaped, the notch faces away from the guardrail, and the side without the notch is connected to the anti-obstruction block by a pin.

[0008] The present invention provides a production process for a fiber-reinforced composite material guardrail, comprising the following steps:

[0009] S1. Prepare reinforcing fiber materials and resin glue;

[0010] S2, the reinforcing fiber material is impregnated and combined into a fiber-reinforced composite material;

[0011] S3, heating and pultruding the fiber-reinforced composite material through a guardrail mold into a corrugated guardrail having a continuous three-wave cross section and a semi-closed opening;

[0012] S4. Cooling the corrugated guardrail;

[0013] S5. Cutting the cooled corrugated guardrail into multiple sections of set length;

[0014] S6. Processing and trimming the cut corrugated guardrail;

[0015] S7. Inspection and packaging.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The product can be overlapped with itself and can also be replaced with steel plates of the same specifications, and can provide good protection.

[0018] 2. Compared with the traditional continuous three-wave structure, the open semi-closed continuous three-wave structure limits the front and rear separation movement of the overlap. When impacted, the overlap is more likely to form a whole and is not easy to separate.

[0019] 3. The curved part can provide elastic deformation support in multiple directions after the guardrail is hit by an external impact, thereby improving the elastic support effect of the guardrail. The straight part can enhance the connection strength between the guardrail and the pin.

[0020] 4. The support structure provides support when the extension part itself deforms elastically.

[0021] 5. The pins directly connect multiple parts. After the guardrail is hit, it is not easily pulled or torn at the pin fixing hole. At the same time, the fixed position does not interfere with the overlap and fixation with the original semi-rigid guardrail of the same specification.

[0022] 6. The pultrusion process can improve the local strength of the elastic sheet while producing at low cost. Combined with the strength structure design, it can achieve economy while meeting the strength requirements.

[0023] 7. The guardrail structure can achieve high-strength bearing capacity of low-modulus materials. Low-modulus materials are softer, and the instantaneous acceleration of vehicle collision is smaller than that of steel guardrails, causing less damage to vehicles and people. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of the guardrail system of the present invention;

[0025] Figure 2 This is a rear view structural diagram of the guardrail system of the present invention;

[0026] Figure 3 It is a schematic diagram of the guardrail structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the guardrail of the present invention;

[0028] Figure 5 This is a schematic structural diagram of the anti-blocking block of the present invention;

[0029] Figure 6 This is a schematic diagram of the guardrail, column, and anti-blocking block structure of the present invention;

[0030] Figure 7 It is a schematic diagram of the column structure of the present invention;

[0031] Figure 8 It is a schematic diagram of the production process of the present invention.

[0032] In the figure: 1. guardrail; 2. column; 3. anti-blocking block; 4. extension; 5. curved part; 6. straight part; 7. main horizontal board; 8. first vertical board; 9. second vertical board. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1-4The present invention provides a fiber reinforced composite guardrail system, including a guardrail 1 and a column 2, and also includes an anti-blocking block 3. The guardrail 1 is a fiber reinforced composite elastic sheet. Compared with traditional semi-rigid guardrails and composite guardrails, it is an inorganic non-metallic material with excellent performance, and has the advantages of good insulation, strong heat resistance, high mechanical strength, etc. This composite material has both high strength and high toughness. Composite plates with the same structure cannot achieve the same protective effect; the cross-section of the guardrail 1 is a continuous three-wave and open semi-closed structure. The specific number of waves can be changed according to actual needs. The open semi-closed continuous three-wave structure limits the front and rear separation movement of the overlap compared to the traditional continuous three-wave, and is easier to form a whole when impacted; the two outermost wave endpoints of the guardrail 1 are S-shaped and extend outward with an extension 4, and the extension 4 includes an arc portion 5 and a straight portion 6. The arc portion 5 converges to the trough and then connects to the straight portion 6, and the straight portion 6 continues to extend outward at a small angle It extends to the end of the trough, and the arc part 5 can be used to support elastic deformation in multiple directions after the guardrail 1 is subjected to external impact, thereby improving the elastic support effect of the guardrail 1, and the straight part 6 can enhance the connection effect between the guardrail 1 and the pin; the two ends of the guardrail 1 do not intersect or overlap, and when the guardrail 1 is replaced, it is replaced and installed through the non-overlapping opening; the adjacent guardrails 1 are overlapped in parallel, so that they can be directly overlapped and replaced with the original semi-rigid guardrails of the same specification; the anti-obstruction block 3 is provided with a supporting structure that cooperates with the extension part 4 and limits it, and provides support for the extension part 4 through the support structure, and provides support when the extension part 4 itself is elastically deformed; the overlap of adjacent guardrails 1 is fastened with a pin to connect the trough, the anti-obstruction block 3 and the straight part 6, so that the pin directly connects multiple parts, and the guardrail 1 is not easily pulled and torn at the pin fixing hole after being hit, and the fixed position does not interfere with the overlap fixation with the original semi-rigid guardrail of the same specification; the anti-obstruction block 3 is fixed to the top of the column 2.

[0035] like Figure 5-6 As shown, the anti-obstruction block 3 includes a main transverse plate 7, and a first vertical plate 8 perpendicular to the main transverse plate 7 is welded at the end of the main transverse plate 7. The first vertical plate 8 is clamped between the trough and the straight part 6. The two ends of the first vertical plate 8 are bent toward the arc part 5 and pressed inside it. Second vertical plates 9 are welded on both sides of the middle part of the main transverse plate 7, and the ends of the second vertical plate 9 are bent toward the arc part 5 and pressed outside it. The end of the main transverse plate 7 is bent and fixed to the column 2, and the trough of the guardrail 1, the first vertical plate 8, the straight part 6, and the second vertical plate 9 are fastened by pins; in this embodiment, the pins directly connect the first vertical plate 8, the second vertical plate 9, the guardrail trough, and the straight part 6 to fix multiple parts. After the guardrail 1 is hit, it is not easily pulled and torn at the pin fixing hole. The ends of the first vertical plate 8 cooperate with the ends of the second vertical plate 9 to provide internal and external support to the arc part 5.

[0036] like Figure 7 As shown, the cross section of the column 2 is C-shaped, the notch faces away from the guardrail 1, and the non-notched edge is connected to the anti-obstruction block 3 by pins; in this embodiment, the cross section is C-shaped and is connected to the anti-obstruction block by pins, reducing the stiffness and controlling deformation while ensuring the necessary strength.

[0037] like Figure 8 As shown, the present invention provides a production process for a fiber-reinforced composite material guardrail, comprising the following steps:

[0038] S1. Prepare reinforcing fiber materials and resin glue;

[0039] S2, the reinforcing fiber material is impregnated and combined into a fiber-reinforced composite material;

[0040] S3, heating and pultruding the fiber-reinforced composite material through a guardrail mold into a corrugated guardrail having a continuous three-wave cross section and a semi-closed opening;

[0041] S4. Cooling the corrugated guardrail;

[0042] S5. Cutting the cooled corrugated guardrail into multiple sections of set length;

[0043] S6. Processing and trimming the cut corrugated guardrail;

[0044] S7. Inspection and packaging.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and alterations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fiber reinforced composite material guardrail system, comprising a guardrail (1) and a column (2), characterized in that: It also includes an anti-blocking block (3), the guardrail (1) is a fiber-reinforced composite elastic sheet, the cross section of the guardrail (1) is a continuous three-wave and open semi-closed structure; the guardrail (1) has an S-shaped extension portion (4) extending outward at the two outermost wave endpoints, the extension portion (4) includes an arc portion (5) and a straight portion (6), the arc portion (5) converges to the trough and then connects to the straight portion (6), the straight portion (6) continues to extend outward at a small angle to the end of the trough, and the two ends of the guardrail (1) do not intersect or overlap; adjacent guardrails (1) are overlapped in a parallel manner; the anti-blocking block (3) is provided with a supporting structure that cooperates with the extension portion (4) and limits it, and the overlap of adjacent guardrails (1) is fastened to the trough, the anti-blocking block (3) and the straight portion (6) by pins; the anti-blocking block (3) is fixed to the top of the column (2).

2. A fiber reinforced composite guardrail system according to claim 1, characterized in that: The anti-blocking block (3) includes a main transverse plate (7), and a first vertical plate (8) perpendicular to the main transverse plate (7) is welded to the end of the main transverse plate (7), and the first vertical plate (8) is sandwiched between the trough and the straight portion (6). The two ends of the first vertical plate (8) are bent toward the arc portion (5) and then pressed inside it. Second vertical plates (9) are welded to both sides of the middle of the main transverse plate (7), and the ends of the second vertical plate (9) are bent toward the arc portion (5) and then pressed outside it. The end of the main transverse plate (7) is bent and fixed to the column (2), and the trough of the guardrail (1), the first vertical plate (8), the straight portion (6), and the second vertical plate (9) are fastened by pins.

3. The fiber reinforced composite guardrail system according to claim 1, characterized in that: The cross section of the upright post (2) is C-shaped, with the notch facing away from the guardrail (1), and the side without the notch being connected to the anti-blocking block (3) via a pin.

4. A production process for fiber reinforced composite material guardrail, characterized in that: The steps include: S1. Prepare reinforcing fiber materials and resin glue; S2, the reinforcing fiber material is impregnated and combined into a fiber-reinforced composite material; S3, heating and pultruding the fiber-reinforced composite material through a guardrail mold into a corrugated guardrail having a continuous three-wave cross section and a semi-closed opening; S4. Cooling the corrugated guardrail; S5. Cutting the cooled corrugated guardrail into multiple sections of set length; S6. Processing and trimming the cut corrugated guardrail; S7. Inspection and packaging.

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