Fiber reinforced composite material guardrail system and production process

Abstract

The invention discloses a fiber reinforced composite material guardrail system and a production process, the fiber reinforced composite material guardrail system comprises a guardrail, a stand column and an anti-blocking block, the guardrail is a fiber reinforced composite material elastic sheet, and the cross section of the guardrail is of a continuous three-wave structure with a semi-closed opening; extension parts extend from two wave end points on the outermost side of the guardrail, and each extension part comprises an arc-shaped part and a straight part; adjacent guardrails are lapped along scales; the anti-blocking block is provided with a supporting structure. The product can be self-lapped and can be replaced with a steel plate with the same specification by a single plate, and a good protection effect can be achieved; through the extending parts, better elastic supporting can be achieved, the connecting strength of the guardrail and the pins is enhanced, the pultrusion technology can improve the local strength of the elastic sheet while low-cost production is achieved, and the strength requirement is met while economical efficiency is achieved in cooperation with the strength structure design.

Description

Technical Field

[0001] The 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 for the protection and preservation of 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 can block the vehicle and reduce the degree of injury to the driver and passengers by blocking, the guardrail's own deformation or the vehicle climbing to absorb the collision energy for buffering and guidance.

[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, high mechanical strength, etc. Continuous fiber composite materials have not yet been effectively used in guardrails. Summary of the invention

[0004] The present invention provides a fiber reinforced composite guardrail system and a production process. The product can overlap itself and can also be replaced with a single plate of a steel plate of the same specification, and can provide good protection. The extension portion 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 producing at low cost. Combined with the strength structure design, economy is achieved while meeting the 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, the guardrail is a fiber-reinforced composite elastic sheet, the cross-section of the guardrail is a continuous three-wave and open semi-closed structure; the guardrail has an S-shaped extension portion extending outward at the two outermost wave end points, the extension portion comprises an arc portion and a straight portion, the arc portion converges to the trough and then connects to the straight portion, 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, a first vertical plate perpendicular to the main horizontal plate is welded at the end of the main horizontal plate, the first vertical plate is clamped between the trough and the straight part, the two ends of the first vertical plate are bent toward the arc-shaped part and pressed inside it, second vertical plates are welded on both sides of the middle part of the main horizontal plate, the ends of the second vertical plate are bent toward the arc-shaped part and pressed outside it, 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 non-notch side is connected to the barrier block by a pin.

[0008] The present invention provides a production process of a fiber-reinforced composite material guardrail, comprising the following steps: S1. Prepare reinforcing fiber materials and resin glue; S2, reinforcing fiber materials are dipped in glue and combined into fiber-reinforced composite materials; S3, heating and pultruding the fiber-reinforced composite material through a guardrail mold to form a corrugated guardrail with 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.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. The product can be overlapped by itself and can also be replaced with steel plates of the same specifications, and can provide good protection.

[0010] 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.

[0011] 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.

[0012] 4. The support structure provides support when the extension part itself deforms elastically.

[0013] 5. The pins directly connect multiple parts. After the guardrail is hit, it is not easy to be pulled and torn at the pin fixing hole. At the same time, the fixing position does not interfere with the overlap and fixation with the original semi-rigid guardrail of the same specification.

[0014] 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.

[0015] 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

[0016] Figure 1 It is a schematic diagram of the main structure of the guardrail system of the present invention; Figure 2 It is a rear view structural schematic diagram of the guardrail system of the present invention; Figure 3 It is a schematic diagram of the guardrail structure of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the guardrail of the present invention; Figure 5 It is a schematic diagram of the structure of the anti-blocking block of the present invention; Figure 6 This is a schematic diagram of the guardrail, column, and barrier block structure of the present invention; Figure 7 It is a schematic diagram of the column structure of the present invention; Figure 8 It is a schematic diagram of the production process of the present invention.

[0017] In the figure: 1, guardrail; 2, column; 3, barrier block; 4, extension; 5, arc-shaped part; 6, straight part; 7, main horizontal board; 8, first vertical board; 9, second vertical board. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0019] 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. Compared with the traditional continuous three-wave, the open semi-closed continuous three-wave structure limits the front and rear separation action of the overlap, 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 part 4, and the extension part 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-shaped part 5 can be used to support elastic deformation in multiple directions after the guardrail 1 is hit by an 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 non-overlapping openings; 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-blocking block 3 is provided with a supporting structure that cooperates with the extension part 4 and limits it, and the support structure provides support for the extension part 4, 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-blocking 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-blocking block 3 is fixed to the top of the column 2.

[0020] 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, and the two ends of the first vertical plate 8 are bent toward the arc-shaped part 5 and pressed inside it, and 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 plates 9 are bent toward the arc-shaped part 5 and pressed outside it, and 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, and the guardrail 1 is not easily pulled and torn at the pin fixing hole after being hit, and the ends of the first vertical plate 8 cooperate with the ends of the second vertical plate 9 to provide internal and external support for the arc-shaped part 5.

[0021] 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 connected to the anti-obstruction block by pins, thereby reducing the rigidity and controlling the deformation while ensuring the necessary strength.

[0022] like Figure 8 As shown, the present invention provides a production process of a fiber reinforced composite material guardrail, comprising the following steps: S1. Prepare reinforcing fiber materials and resin glue; S2, reinforcing fiber materials are dipped in glue and combined into fiber-reinforced composite materials; S3, heating and pultruding the fiber-reinforced composite material through a guardrail mold to form a corrugated guardrail with 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.

[0023] Although 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 variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fiber reinforced composite 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 extension portion (4) extending outward in an S-shape at the two outermost wave end points, the extension portion (4) includes an arc portion (5) and a straight portion (6), the arc portion (5) converges to the wave 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 wave trough, and the two ends of the guardrail (1) do not intersect or overlap; adjacent guardrails (1) are overlapped in parallel; the anti-blocking block (3) is provided with a supporting structure that cooperates with the extension portion (4) and limits the position of the extension portion (4), and the overlap of adjacent guardrails (1) is fastened by pins to connect the wave trough, the anti-blocking block (3) and the straight portion (6); 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) comprises a main transverse plate (7), the end of which is welded with a first vertical plate (8) perpendicular thereto, the first vertical plate (8) being sandwiched between the trough and the straight portion (6), the two ends of the first vertical plate (8) being bent toward the arc portion (5) and then pressed therein, second vertical plates (9) being welded to both sides of the middle of the main transverse plate (7), the ends of the second vertical plates (9) being bent toward the arc portion (5) and then pressed outside thereof, the end of the main transverse plate (7) being bent and then 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) being 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, the notch faces away from the guardrail (1), and the side without the notch is connected to the barrier 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, reinforcing fiber materials are dipped in glue and combined into fiber-reinforced composite materials; S3, heating and pultruding the fiber-reinforced composite material through a guardrail mold to form a corrugated guardrail with 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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