JP2007085152A - Painting method and painting device of road surface sign - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for painting a road surface sign evenly on a draining paved road surface using a conventional paint for the road surface sign but not a paint for an exclusive use which may be fitted to an existing heat melting type construction machine which is already in use. <P>SOLUTION: In the painting method of the road surface sign, a guide shooter 4 is provided at at edge end of the advancing side of a paint dropping port 3 provided at the lower part of a direct flow-down type paint retaining hopper 1 of the conventional heat melting type construction machine in a manner that the guide shooter 4 is oriented in a direction reverse to an advancing direction. The paint flows on the guide shooter, flows down to the construction road surface A, and is painted on the road surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for painting a road marking on a drainage pavement surface, and provides a construction method and apparatus for efficiently and uniformly applying to a road surface using an existing paint used on a conventional pavement surface. It is.

  Conventionally, as a construction method for painting road markings, the heat melting type is most often used, which is a melting pot for paint raw materials composed of components such as pigments, synthetic resins, glass beads, additives, etc. A direct-flowing paint having a gap width of 2 mm to 3 mm provided under a paint reservoir hopper of a construction machine with a good fluidity paint that is stirred and dissolved and heated to about 180 ° C. to 220 ° C. The drop opening was brought into close contact with the construction road surface, and the paint was allowed to flow down while being moved almost horizontally, and was applied at a thickness of about 1.5 mm.

In recent years, drainage pavement, which has been widely used on highways and highways, has functions to improve vehicle driving safety during rainy weather, such as mitigating hydroplaning phenomena, as well as suppressing engine noise absorption and air pumping noise generation. Since it has a function to reduce road traffic noise due to vehicle driving, etc., it is a pavement that is effective for improving the roadside environment as a low-noise pavement.
However, since the aggregate particles on the surface layer are large, there are many voids and the surface of the road surface is formed in an uneven shape. Therefore, the road surface marking by the direct flow method using the conventional superheated melting construction machine When using a conventional highly fluid paint, the sign paint penetrates deeply into the voids of the drainage pavement, impairing the drainage function, and the amount of sign paint used is less than the conventional dense paint. In the case of grain pavement, it is about 540 g per meter, whereas in drainage pavement, there is a problem of increasing to about 980 g per meter.
In addition, the paint drop hopper provided below the paint reservoir hopper is brought into close contact with the construction road surface, and in order to make the paint flow down, the falling edge of the paint reservoir hopper is pressed against the edge of the paint reservoir hopper. There are also problems such that the glass beads for use are buried in the paint, the night reflectance is lowered, the road surface formed in irregularities is flattened, the frictional resistance is lowered and the tire slips.
In order to solve the above problems, the following inventions have been proposed.

Japanese Patent Laid-Open No. 10-102417 Japanese Patent Laid-Open No. 11-124817 JP 2000-1813 A JP 2001-81715 A

  In Patent Document 1, two rotating bodies arranged away from the ground and facing each other are rotated downward in an inscribed direction, and stored in a hopper arranged above the two rotating bodies. A coating material is sprayed downward from between the two rotating bodies by inclining the two rotating bodies and the hopper with respect to the drainage pavement surface.

  The above-mentioned patent document 2 is mainly composed of high-purity aluminate after baking colored paint on a necessary part of a line such as a center line or a traffic division line on an asphalt road or on a colored paint that has already been baked. The phosphorescent material alone or the phosphorescent material and glass bead particles are mixed and dispersed to form a phosphorescent material layer, and the phosphorescent material layer is fixed to the upper part with a transparent fixing / adhesive material.

  The patent document 3 uses a heat-melt type paint obtained by blending 0.1 wt% to 5 wt% of a filler having a fiber shape, a flat shape or an indeterminate shape, and the surface of the drainage pavement has a color of drainage pavement. Undercoat the same or similar color.

  In Patent Document 4, the carriage is composed of a carriage and an application unit attached to the carriage. The application unit rotates the application roller to cause the paint to flow down in the form of a curtain so that the paint is applied to the road surface with a predetermined width. A road surface marking application device for applying, in order to hold the application roller at a constant height position from the road surface, at least at a position below the application roller, while being in contact with the road surface and along each other on both sides of the application roller. A pair of side plates arranged in parallel is provided.

With the direct flow-type road marking using a conventional superheated melting construction machine, when a conventional highly fluid paint is used, the marking paint penetrates deeply into the voids of the drainage pavement. There is a problem that the amount of use of the marking paint is about 540 g per meter in the case of the conventional dense-grain pavement, and about 980 g per meter in the drainage pavement.
In addition, the paint drop hopper provided below the paint reservoir hopper is brought into close contact with the construction road surface, and in order to make the paint flow down, the falling edge of the paint reservoir hopper is pressed against the edge of the paint reservoir hopper. There are also problems such as that glass beads for use are buried in paint and the night reflectance is lowered, and the road surface formed in an uneven shape is flattened, the frictional resistance is lowered and the tire slips.

For this reason, special paints and the like for drainage pavement have been made, but there is a problem that it is expensive and expensive.
Although the said patent document was proposed in order to solve them, there existed the following problems.

  In Patent Document 1, although a small hand pusher is possible, capital investment such as purchasing a new dedicated device such as an injection pressurizing device or a heat retaining device is required.

In Patent Documents 2 and 3, the construction process is duplicated, and it takes a long time to work.
In addition, since an undercoat paint or the like is used separately, it is expensive.

In Patent Document 4, the coating roller is rotated to flow down the paint in a curtain shape, and the paint is applied to the road surface with a predetermined width. However, when the paint is made into a curtain shape, the distance from the construction road surface is The physical property that the width of the curtain becomes narrower when it is separated and becomes wider when it is approached. Therefore, the distance between the application roller and the construction road surface is made as narrow as possible, and further, the distance between the enforcement road surface is kept constant. In addition, a side plate is provided to hold the application roller at a certain height while contacting the enforcement road surface.
However, the road marking applied to the road surface is as thin as about 1.5 mm, and a thin paint curtain with a thickness of 1.5 mm is required when the paint is applied in the form of a curtain.
Therefore, there is a problem that the paint curtain tends to cause the physical properties as described above, and it is necessary to reduce the distance from the construction road surface as much as possible. However, when the application roller is used, at least the radius of the application roller is required. Therefore, it was necessary to set an appropriate height with respect to the application width of the road marking in consideration of the physical properties of the paint curtain, and fine adjustment was necessary.
In addition, when it is applied while contacting the road surface, the construction machine may be affected in some way due to the unevenness of the surface of the construction road surface.
Furthermore, it is necessary to purchase a dedicated machine such as a coating roller, which requires capital investment.

  In view of the above problems, the present invention is attached to an existing superheated melting construction machine that has already been used, and uses a conventional road marking paint instead of a dedicated paint, and evenly on the drainage paved road surface. The present invention provides a construction method and apparatus for painting road markings.

  In order to achieve the above object, a guide shooter is provided at the edge of the paint drop opening provided below the paint reservoir hopper of the present invention in the direction of travel in the direction opposite to the travel direction. The paint flows and flows down to the construction road surface and is applied, and instead of flowing down directly onto the construction road surface as in the past, the paint becomes a film by flowing once over the guide shooter, and the construction road surface remains in the form of a film. It will flow down.

The height from the lower end of the guide shooter to the construction road surface is about 1 mm. This is because, like the conventional direct flow type, the paint drop opening is brought into close contact with the construction road surface to flow down the paint. In order to solve problems such as the paint reservoir hopper being pressed against the paint that has flowed down, it is about 1 mm away from the construction road surface. This is to prevent things.
Furthermore, the distance of about 1 mm from the construction road surface is set so as not to be affected by the physical properties when the paint flows down in the form of a film. By using the guide shooter to flow down the paint, The distance from the construction road surface can be reduced.
Furthermore, the mounting angle of the guide shooter is appropriately set to an arbitrary angle with respect to the construction road surface, and this is for setting according to the shape of the paint reservoir hopper to be attached, the situation of the construction road surface, and the construction form.

  Both sides of the guide shooter are provided with side plates for preventing wind, and the fluidity is prevented from falling due to outside air and wind while the paint flows on the guide shooter. .

  The guide shooter is provided at the edge of the drop-off port of the direct flow-type paint reservoir hopper of the existing heating and melting type construction machine in the direction opposite to the traveling direction. It is a superheated melt-type construction machine used in the past, and is a direct-flow-type paint dropper provided below the paint reservoir hopper, which is detachably provided on an existing machine. In addition, an existing heating and melting construction machine that has already been used can be used as it is without requiring a dedicated machine.

  The width of the guide shooter is slightly wider at both ends than the width of the drop port of the direct-flow type paint reservoir hopper of the existing heating and melting type construction machine to be installed. In consideration of the physical property that the width when flowing down from the shooter is narrowed in advance, both ends of the guide shooter are provided slightly wider.

  While the paint reservoir hopper is moved substantially horizontally in the direction of travel, the paint flows down from a drop opening provided below, and after the paint flows over the guide shooter, it further flows down to the construction road surface and is applied. Once the paint flows over the guide shooter, the paint becomes uniform and flows down as it is moved horizontally to the construction road surface to display a road marking with a uniform paint thickness on the surface of the construction road surface. It can be formed.

The present invention has the above-described configuration, and has the following effects.
There is no need to use an expensive dedicated paint, and a conventional paint can be used, so there is no material cost.

  Since it can be used by attaching to existing machines that are already in use, there is no need for capital investment such as purchasing expensive dedicated machines.

  Once the paint flows over the guide shooter, the paint becomes uniform and flows down while moving it horizontally on the construction road surface to stabilize the amount of paint flow, and the paint thickness on the surface of the construction road surface. A uniform road marking can be formed.

  The paint that has flowed down to the road surface is not further pressed, the glass beads for phosphorescence on the paint surface are not buried in the paint, and the nighttime reflectance is not lowered.

  Since the paint adheres uniformly regardless of the unevenness of the pavement surface, it is possible to form the painted surface with the unevenness of the surface as it is, so that the frictional resistance value is not lowered and there is an anti-slip effect.

  Since a highly fluid paint can be used, the moving speed of the construction machine can be increased and the construction time can be shortened.

Embodiments of the present invention will be described based on examples with reference to the drawings.
Example 1, first, proceed to the edge of the paint dropping port (3) provided in the lower direction of the direct flow type paint reservoir hopper (1) of the heating and melting type construction machine that has already been used. A guide shooter (4) is provided opposite to the direction (B).

  Next, the paint reservoir hopper (1) is charged with the marking paint (2) used in the conventional road marking, and the distance from the lower end of the guide shooter (4) to the construction road surface (A) is about 1 mm and The mounting angle of the guide shooter (4) is appropriately set to an arbitrary angle with respect to the construction road surface.

  The marking paint (2) is caused to flow down from the paint drop opening (3) while moving the set material on the construction road surface (A) of the drainage pavement in the traveling direction (B), and the marking paint (2 ) Flows on the guide shooter (4), flows down to the construction road surface (A), and is applied.

  First, a guide shooter (4) having side plates (5) is provided at both ends, and the guide shooter (4) is already used, and the direct flow-down paint reservoir hopper (1) of an existing heating and melting type construction machine is used. It is provided at the edge of the paint drop opening (3) provided below in the direction of travel, opposite to the direction of travel (B).

  In this case, the distance between the guide shooter (4) and the construction road surface (A) is set to about 1 mm, and the attachment angle is set to the construction road surface (A). The shape of the paint reservoir hopper (1) to be attached and the construction road surface (A) The angle is set appropriately depending on the situation and construction form.

Moreover, when constructing a line-shaped road marking, the coating width of the paint reservoir hopper (1) to be used and the paint dropping opening (3) provided below is changed according to the coating width of the road marking to be constructed.
Therefore, a guide shooter (4) of several kinds of widths is provided in accordance with the paint reservoir hopper (1) and the paint drop opening (3) provided below.

  Next, a paint raw material composed of components such as pigments, synthetic resins, glass beads (7), additives, etc., used for conventional pavement surfaces, is stirred and dissolved in a melting pot at about 180 ° C. to 220 ° C. The sign paint (2) having good fluidity heated to a certain degree is charged into the paint reservoir hopper (1).

  While moving the paint reservoir hopper (1) in the traveling direction (B) on the drainage pavement construction road surface (A), the sign paint (2) is caused to flow down from the paint drop opening (3), The paint (2) flows on the guide shooter (4), flows down to the construction road surface (A), and is applied.

  The perspective view which shows the Example of this invention   The perspective view which shows the Example of this invention   Expanded sectional view showing an embodiment of the present invention   Expanded sectional view showing a conventional example

Explanation of symbols

1 Paint reservoir hopper 2 Marking paint 3 Paint dropper 4 Guide shooter 5 Side plate 6 Paint surface 7 Glass beads A Construction road surface B Direction of travel

Claims (6)

  In the method of painting road markings on the drainage pavement, a guide shooter is provided at the edge of the paint drop port provided below the paint reservoir hopper in the direction of travel in the direction opposite to the direction of travel. A coating method and a coating apparatus for road marking, characterized in that the paint flows, flows down to the construction road surface, and is applied.   The road marking according to claim 1, wherein the height from the lower end of the guide shooter to the construction road surface is about 1 mm, and the mounting angle of the guide shooter is appropriately set to an arbitrary angle with respect to the construction road surface. Painting method and painting equipment.   The road marking coating method and coating apparatus according to claim 1 or 2, wherein side plates for wind protection are provided on both side surfaces of the guide shooter.   The guide shooter is detachably provided at the edge of the drop-off port of the direct flow-type paint reservoir hopper of the existing heat-melting construction machine, in the direction opposite to the direction of travel. The road marking coating method and coating apparatus according to claim 1.   5. The road marking coating method and coating apparatus according to claim 1, wherein the width of the guide shooter is slightly wider at both ends than the width of the dropping port of the paint reservoir hopper to be attached.   While the paint reservoir hopper is moved almost horizontally in the direction of travel, the paint is allowed to flow down from a dropping port provided below, and after the paint flows over the guide shooter, it further flows down to the construction road surface and is applied. The road marking coating method and coating apparatus according to claim 1, wherein:

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