JPH07286310A - Guidance line for transportation machine and formation of the line - Google Patents

Abstract

PURPOSE:To prevent a guide line from diffusively reflecting due to wet conditions during the rainy season and illumination at night, by forming a black powder layer having a large difference of brightness from the road face and a low brightness. CONSTITUTION:When a guidance line 1 for transportation machines, having a powder layer is formed on a concrete road face 4, At first, a two-liquid mixed type black resin paint 2 is applied on the concrete road face 4 by use of a line-drawing machine to make lines. Next immediately after application of paint, black rubber powder as a black powder layer 3 is scattered on the line 1. After 24 hours, the excess rubber powder which is not stuck to the line 1 is removed by use of a brush. In this way, the brightness of the surface of the line 1 is made greatly different from the road face 4 and the line is made of a black powder having a low brightness. Hence, diffused reflection due to the wet conditions during the rainy season and illumination at night can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical guide line for an automatic carrier used in a container yard or the like, and more particularly to a guide line for a carrier which prevents malfunction caused by irregular reflection on the surface and a method for forming the guide line. .

[0002]

2. Description of the Related Art As a guide line of a carrier, a magnetic type,
There is an optical type or the like. In the optical type, the brightness of the line is optically detected to guide and run the carrier. Although a white guide line has been used for a conventional guide line for a carrier, there is a risk of malfunction due to disturbances such as reflected light and dirt during sunshine.

Therefore, the present applicants have already proposed a guide line having a lower brightness and a larger brightness difference than the road surface, and a black material suitable for its use (if necessary, Japanese Patent Application No.
-80912 and Japanese Patent Application No. 5-123774).

[0004]

The practical main conditions of the optical guide line are (1) having load resistance, wear resistance, and peeling resistance with respect to wheels that traverse the line;
(2) Having weather resistance such as sunlight resistance, temperature resistance, and water resistance,
(3) Diffuse reflection does not occur due to wetness during rain and floodlight at night, and (4) Easy workability.

The black or extremely dark color guide line sufficiently satisfies the conditions (1), (2), and (4) among the above conditions, but the condition (3) is as shown in FIG. When the surface of the line 01 is smooth as shown in (1), there is a problem that irregular reflection occurs due to wet reflection during rain and light projection at night, which reduces the detection accuracy of the line. In order to prevent this irregular reflection, it is a general method to mix a matting agent in the drawing paint, apply it to the surface of the line, and form irregularities in micro units on the surface of the line. However, with this method, irregular reflection cannot be sufficiently prevented, and a malfunction is likely to occur.

There is also a method for preventing irregular reflection by roughening the surface of the paint solidified by drawing on the road surface with sandpaper or the like, or by mechanically embossing (texturing the uneven surface) to prevent irregular reflection. It takes time to form the line.
There is a problem that mechanical strength and durability are low. The present invention is proposed in view of the above-mentioned problems, and an object thereof is to sufficiently prevent diffuse reflection that has been caused by wetness during rainfall and light projection at night, and prevent malfunctions, and the line To provide a guide line for a carrier and a method for forming the line, which can improve the mechanical strength and durability of the line, and can easily form the line without using a special device or procedure and without adhering dust or the like to the line. There is a point to do.

[0007]

In order to achieve the above object, the guide line for a carrier of the present invention has an extremely dark color or black powder layer having a large lightness difference and a low lightness on the surface thereof. ing. Further, the method for forming a guide line for a carrier of the present invention is such that after drawing a line with a paint, an extremely dark color or black powder having a large lightness difference with the road surface and a low lightness is sprinkled on the surface, and the powder is applied. It is characterized by combining with.

[0008]

[Action]

(1) In the guide line for a carrier of the present invention, as described above, the surface of the line is formed as a powder layer of a very dark color or a black color having a large lightness difference with the road surface and a low lightness. Diffuse reflection caused by is sufficiently prevented, and malfunction does not occur. (2) Further, in the method for forming a guide line for a carrier of the present invention, after drawing a line with a paint as described above, an extremely dark or black powder having a large lightness difference with the road surface and a low lightness is sprinkled on the surface thereof. Since this powder is firmly bonded to the paint, the mechanical strength and durability of the line are improved. In addition, after drawing a line with paint as described above, it is sufficient to sprinkle an extremely dark powder or black powder having a large lightness difference and low lightness on the surface, so that the line does not depend on a special device or procedure. Moreover, it is easily formed without adhering dust to the line.

[0009]

EXAMPLES Next, a guide line for a carrier and a method for forming the line of the present invention will be described with reference to the examples shown in FIGS. 1 and 2. FIG. 1 shows a guide line for a carrier, and FIG. The method of forming the guide line is shown. Reference numeral 1 in FIG. 1 is a guide line for a carrier, 2 is a paint solidified by drawing on a concrete road surface 4, and 3 is an extremely dark or black powder layer integrally formed on the surface of the paint 2.

In forming the guide line 1 for a carrier having the powder layer 3 on the concrete road surface 4, first, a black two-component mixed resin paint 2 having a width of 20 mm and a thickness is used on the concrete road surface 4 by using a wire drawing machine. It is applied to a thickness of 1 mm to form a line (see FIG. 2 (a)). Within 1 minute after application, black rubber powder (# 2000: average diameter 0.50 mm) is sprayed on the line 1 at a rate of 20 g per 1 m of the line as a black powder layer 3 (see FIG. 2B). After 24 hours, excess rubber powder not fixed to the line 1 is removed using a brush (see FIG. 2 (c)).

At this point, the curing of the epoxy resin is almost completed, and 8 g of rubber powder per 1 m of the line is firmly bonded to the guide line 1 for the conveyor (see FIG. 2 (d)).
The optical characteristics of the guide line 1 for a carrier are as follows. At daylight At night At night At night At night Black epoxy resin line (30) (4) (16) Black rubber powder coating line (30) (17) (23) Here, the data in () is the line It represents the difference in brightness from the surroundings, and the larger the data, the better the performance.

As the paint 2, a solvent type, an aqueous type, a hot melt type or the like can be used instead of the two-component mixed type resin paint. Further, as the polymer component of the paint, it is necessary to select one having good adhesion and adhesiveness depending on the material of the road surface and the powder. Generally, epoxy type and urethane type are preferable. The particle size of the powder is 5 μ to 10 mm
Although those having a size of about 0.3 to 3.0 mm can be used, those having a size of about 0.3 to 3.0 mm are preferable in terms of workability and wear resistance.

As for the color of the powder, in addition to the above black color, extremely dark colored powder can be used, and even when extremely dark colored powder is used, substantially the same optical performance can be obtained. Carbon black, synthetic iron oxide, rubber powder, plastic powder or the like is used as the powder material, but rubber powder is preferable from the viewpoint of particle size and abrasion resistance. In the above guide line 1 for a carrier, since the surface of the paint (line) 2 is formed into the powder layer 3 of extremely dark color or black color having a large lightness difference with the road surface and a low lightness, it is caused by wetness during rain and flooding at night. The irregular reflection that had occurred is sufficiently prevented, and no malfunction occurs.

After the line is drawn with the paint 2, an extremely dark or black powder having a large lightness difference with the road surface and a low lightness is sprinkled on the surface of the line to firmly bond the powder to the paint. Mechanical strength and durability are improved. Moreover, after drawing a line with the paint 2 as described above, it is sufficient to spray an extremely dark or black powder having a large lightness difference and a low lightness on the surface, so that the line does not depend on a special device or procedure. Moreover, it is easily formed without adhering dust or the like to the line. The paint 2 and the powder layer 3 are firmly bonded to each other and have excellent durability.

[0015]

【The invention's effect】

(1) In the guide line for a carrier of the present invention, as described above, the surface of the line is formed as a powder layer of a very dark color or a black color having a large lightness difference with the road surface and a low lightness. The diffuse reflection caused by the above can be sufficiently prevented, and no malfunction occurs.

(2) In the method for forming a guide line for a carrier according to the present invention, after the line is drawn with a paint as described above, an extremely dark color or black powder having a large lightness difference with the road surface and a low lightness is formed on the surface thereof. And the powder is firmly bonded to the paint, so that the mechanical strength and durability of the line can be improved. In addition, after drawing a line with paint as described above, it is sufficient to sprinkle an extremely dark powder or black powder having a large lightness difference and low lightness on the surface, so that the line does not depend on a special device or procedure. Moreover, it can be easily formed without adhering dust or the like to the line.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of a guide line for a carrier of the present invention.

FIG. 2 is an explanatory view showing an example of a method for forming a guide line for a carrier of the present invention.

FIG. 3 is a vertical sectional front view showing a conventional guide line for a carrier.

[Explanation of symbols]

 1 Guide line for carrier 2 Paint 3 Powder layer 4 Road surface (concrete road surface)

Claims (2)

[Claims] 1. A guide line for a carrier, characterized in that an extremely dark or black powder layer having a large lightness difference with a road surface and a low lightness is formed on the surface. 2. A conveyance characterized in that after a line is drawn with a paint, an extremely dark powder or black powder having a large lightness difference with a road surface and a low lightness is scattered on the surface and the powder is bonded to the paint. Method for forming machine induction line.