CZ20013394A3 - Vertical traffic sign for roads and process for producing bottom board thereof - Google Patents

Abstract

The vertical road sign for the road is assembled from a supporting structure to which it is fixed by means of fasteners (4) and backing boards 1). this consists of fiberglass planar washers (2) and backing layers (3). The clip (4) is secured to the substrate by lamination and / or cured joints (5); the sheet (1) by means of a mold to which a layer is first applied of a curable gelcoat forming a backing layer (3) on sticking the retroreflective foil with the symbol. On Background the layer (3) is deposited with a glass fabric wetted with curable material a polyester resin solution which forms a planar one together washer (2). The clip (4) is covered by the blankets (21) of the screed mat and the overall the assembly is allowed to cure.

Description

(57)

The vertical traffic sign on the road is made up of a supporting structure on which it is fixed by means of a clip (4) and a base plate 1). it consists of a fiberglass planar support (2) and a backing layer (3). The method of manufacturing said backing sheet (1) by means of a mold into which a curable gelcoat layer forming the backing sheet (3) is first applied to adhere a retroreflective film with the symbol of the fastener (4). . A glass cloth wetted with a curable polyester resin solution is deposited on the backing layer (3) to form a flat backing (2). The clip (4) with the mating surfaces of the web (2) (6) is covered by the blankets (21) in the step and the assembly is allowed to cure.

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Vertical road sign on the road and the method of production of its base plate

Technical field

The invention relates to vertical road signs, in which the structural composition of their sub-bases and a method of manufacturing such sub-bases is provided.

BACKGROUND OF THE INVENTION

Road signs are used to notify safety measures and / or information to road users by means of established symbols. Vertical traffic signs are signs placed vertically above or next to the road, on sub-bases with glued foil of the relevant symbol, mounted on columns or other suitable supporting structure.

Placing vertical traffic signs in the terrain and in the immediate vicinity of roads exposes them to changes in weather conditions and the frequency of traffic of vehicles, increasing the demands on their service life. In the known vertical traffic signs, mainly metallic materials, such as steel sheets coated with protective coatings, galvanized sheets or aluminum sheets, are mainly used to make their base plates.

Making sheet metal backing sheets is a relatively inexpensive solution, but protective coatings on the front under the retroreflective foil as well as on other surfaces cannot prevent corrosion from deteriorating long enough to negatively affect the service life of vertical road signs. A better surface protection for steel road signs is their galvanizing, which provides better protection against corrosion, but the disadvantage of the protective layer is its brittleness, which is manifested by small cracks, from which the creeping corrosion of the board gradually deteriorates and the road signs .

The complete prevention of the corrosion of the road signs of the vertical road signs is achieved by using aluminum sheet for their production. However, this qualitatively advantageous material is costly, and its placement on the road signs is often subject to alienation or other vandalism, and it has been shown to be one of the main drawbacks of the road signs so constructed.

When using metallic materials on a flat vertical washer α «* ·· ♦ · ·· ♦ road signs, screw fasteners, riveted, welded or soldered joints are used to fasten the clip. These types of joints are frequent focal points for the spread of corrosion defects, joint brittleness, or insufficient strength, which also contributes to the negative effects on the service life of road signs.

SUMMARY OF THE INVENTION

The aforementioned drawbacks are largely eliminated by a vertical road sign consisting of a supporting structure and a backing plate, on which is mainly glued on the front surface of the retroreflective film with a symbol and at least one clip for fastening to the supporting structure according to the invention in which the backing sheet is made of a fiberglass planar support. A continuous cured backing layer is formed on the front face of the pad and on the rear side the clip is fixed by lamination to a planar pad or is removably attached to at least two fasteners of the releasable connection, the rear of which forms a rigid joint with the planar pad. The fortification is also preferably made by forming at least one cured joint. The rigid connection of the planar washer to the fastener is formed by its laminated rear portion directly to the planar washer. Preferably, the reinforcing pad is made of metal and its length and width are greater than the length and width of the clip.

The fiberglass planar backing is formed by at least one layer of glass fiber embedded in a cured polyester resin solution. The backing layer consists of a cured gelcoat. The lamination between the planar washer and the clip is formed at the overlapping ends of the web by overlaying with at least one fiberglass blanket with a cured polyester resin solution. The strip is laid along the length of the clip at the bottom of its profile.

The joint of the clip and the plain washer is formed by a cured polyester flux flowing into the drilled hole of the bottom of the clip profile and into the opening of the belt. Above the upper level of the aperture, the resin forms a bump that is larger than the diameter of the aperture of the web. The vertical road sign backing sheet is produced by the method of applying a curable gelcoat backing layer over the entire surface. At least one glass fiber layer is deposited over the entire surface and wetted with a curable polyester resin containing initiator and accelerator. A clip is placed on the surface of the dense liquid backing layer under gentle pressure so as to ensure that it is sufficient to provide sufficient support. wetting their contact surfaces. Preferably, a portion of the contact surface is covered at least at the ends of the clip with at least one fiberglass blanket which is also wetted with a curable polyester resin solution. Such a substrate sheet assembly is allowed to cure.

BRIEF DESCRIPTION OF THE DRAWINGS

The solution is explained in more detail in the attached figures, where:

Giant. 1 is a view of the rear face of a square backplate of a vertical traffic sign with two clips attached; FIG. 2 is a detail A of FIG. 1 showing a side of the clip rigidly bonded to a planar support; FIG. Fig. 4 is a cross-sectional view of a rigid joint structure in which the reinforcement pad is supported on a fastener Fig. 5 is a cross-sectional view of a rigid joint structure in which a reinforcement pad is firmly attached to a joint element

An example of an embodiment of the invention

Example 1

The vertical road sign is made of a load-bearing structure (not indicated in the figure) and the backing sheet I shown in FIG. 1. This backing sheet J is made as described below from a fiberglass planar support 2, forming at its front surface A continuous cured backing layer 3. Two fasteners 4 are fastened to the back surface of the backing sheet 1 by laminating the overlapping ends of the web 6 and making eight cured joints 5. The backing sheet of the vertical traffic sign is made as follows:

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A container in the form of a wide bottom and slightly raised edges, following the shape of the backing sheet 1 of the vertical traffic sign, in this case square (see Fig. 1), is thoroughly cleaned of mechanical impurities and a thin film of separation paste is formed. which serves to separate the product from the mold later. A 0.5 mm thick undercoat 3 (see FIG. 3) of the pretreated gelcoate solution is sprayed or brushed into the mold over its entire surface. It is a mixture based on isophthalic acid with neopentyl glycol containing about 1.5% by weight of an initiator, which is methyl ethyl ketone peroxide and the thick solution of the mixture is colored with a gray dye.

The planar substrate 2 is formed by applying a base layer of a pre-treated polyester resin solution with a brush. It is a low viscous solution of orthophthalic unsaturated polyester in styrene with the addition of about 2 weight percent initiator and about 0.25 weight percent accelerator.

Fiberglass strips are applied to the base layer over the entire surface, which are wetted by applying another layer of pre-treated polyester resin solution and thoroughly formed with brushes in corners and in a flat substrate 2 having a diameter of about 4 mm.

In the workshop conditions, the aluminum profiles of the clip 4 are cut to a predetermined length by about 40 mm longer aluminum strip strips 6. Drill holes 2 mm in diameter at the bottom of the clips 4 and in the strip 6 are spaced approximately 80 mm apart so that they are coaxial and at each overlapping end of the web 6 a single aperture was formed spaced from its edge by about 10 mm. The web 6 is bevelled at the edges and placed on the bottom of the profile so that its edges overlap on both sides. The clip assembly 4 with the web 6 is placed in a bitumen solution under gentle pressure to ensure the holes are filled and overflowed.

The protruding edges of the web 6 are wetted with the bitumen solution, folded transversely through the glass fiber blanket 21, rewetted with the bitumen solution and longitudinally folded on both sides with further glass fiber blankets 21 and the surface is wetted and brushed to a gradual surface bevel.

The assembly is allowed to cure for about 20 minutes under normal atmospheric conditions, the unnecessary edges protruding from it are cut off and left to ripen for about 3 hours.

The backing plate 1 of the vertical traffic sign is removed from the mold and a retroreflective film with the symbol is adhered to its front surface and placed in the field by fastening the clip 4 to the post or other supporting structure.

Example 2

On the back of the backing layer, separate fixed joints 72 are provided for each clip 4, two independent connecting elements 7 each.

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A rigid joint 72 is formed between a planar washer 2, on the front side of which the backing layer 3 is located and between the connecting element 7. A reinforcing washer 8 is supported to the head of the back of the connecting element 7 and covered by a laminated fiberglass blanket 21. The clip 4 is fastened to the connecting element 7 by a screw connection.

Example 3

On the back of the backing sheet, for each clip 4, there is an assembly consisting of a reinforcement pad 8 and two fastening-welded fasteners 7 fixed by a resistance weld. It consists of a laminate blanket 21 made of fiberglass.

Claims (9)

PATENT CLAIMS 1. A vertical road sign consisting of a supporting structure and a sub-base, the front surface of which bears the symbol and the rear surface of which has at least one fastener to be attached to the sub-base, characterized in that the sub-floor (1) is made of a fiberglass planar washer (2) having a continuous cured backing (3) formed on the front surface, wherein the clip (4) is secured to the back plane by lamination to the planar washer (2) to form at least one cured joint (5), or the clip (4) is removably attached to the at least two connecting elements (7) of the releasable connection, the rear of which forms a fixed connection (72) to the planar washer (2). 2. The vertical traffic sign according to claim 1, characterized in that the fiberglass planar support (2) is formed by at least one layer of glass fabric embedded in a cured polyester resin solution. A traffic sign according to claim 1 or claim 2, characterized in that the base layer (3) is a cured gelcoat. A vertical traffic sign according to any one of the preceding claims, characterized in that the lamination between the planar washer (2) and the clip (4) is formed at the overlapping ends of the strip (6) extending along the length of the profile of the clip (4). ), by covering these ends of the web (6) with at least one blanket (21) of fiberglass and cured polyester resin. A vertical traffic sign according to any one of the preceding claims, characterized in that the joint (5) is formed by a cured polyester resin of the planar washer (2) flowed into the drilled hole of the bottom profile of the clip (4) in the opening of the strip (6). the level of the band opening (6) of the resin creates a bump larger than the diameter of the band opening (6) Road sign according to one of Claims 1 to 3, characterized in that the rigid joint (72) of the planar washer (2) to the connecting element (7) is formed by its rear part laminated directly to the planar washer (2). · ** ** ** ** ** ** * ** * * * * * * * * * * * * * 7. A road sign according to claim 1, characterized in that the fixed connection (72) of the flat washer (2) to the connecting element (7) is formed by its supported or attached rear part to the reinforcement pad. (8), which is laminated to the plain washer (2). The vertical traffic sign according to any one of claims 1 to 7, characterized in that the reinforcing pad (8) is made of metal and its length and width are greater than the length and width of the clip (4). Method for producing a road sign underlay according to the preceding claims, characterized in that a curable gelcoat backing layer (3) is applied in the form of a road sign in the form of a road sign, over which at least one glass fiber layer is deposited over the entire surface. wetting the curable polyester resin solution containing the initiator and accelerator, whereupon the clip (4) is placed under pressure to provide sufficient wetting of the contact surfaces and overflow of the clip openings (4) as well as the web (6) and part of the clip contact surface ( 4) and / or the webs (6) are covered with at least one glass fiber blanket (21) which is wetted with a curable polyester resin solution and finally the whole assembly is allowed to cure.