JP2000352011A - Method for constructing warning road line for visually handicapped person - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct accurate button-like projections on a road surface continuously in a short time. SOLUTION: Using paint (c), a band-shaped line A of 1 to 3 mm thick is constructed on a road surface beforehand. Next, using a projection work execution machine 1 having a projection forming rotor 2 rotating in parallel with the road surface, groove holes 2a are drilled in the projection forming rotor 2 and, while the projection forming rotor 2 is rotated according to the movement of the projection work execution machine 1, the paint (c) is filled sequentially from the inside top of the groove holes. When the groove holes 2a arrive at the bottom position, projections B are dropped on the band-shaped line A to lay them down on the road surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended for a visually impaired person to warn of danger during walking. The present invention relates to a method for constructing a warning-type road line for the visually impaired, which is laid.

[0002]

2. Description of the Related Art In general, road lines for the visually impaired include guide-type lines having a large number of rib-shaped protrusions having a rectangular outer periphery and warning-type roads having a large number of button-shaped protrusions having a circular outer periphery. Marked in combination with the line, the visually impaired walks along the guided road line, and recognizes places where normal walking cannot be performed on the warning road line, that is, dangerous areas such as stairs and platforms, or intersections etc. It is supposed to.

Conventionally, a warning-type road line for warning of this danger is provided by arranging square tiles having a large number of button-shaped protrusions formed on the surface in advance on the road surface, or by providing button-shaped protrusions. The mainstream method is to bond a sheet-like object having a large number of sheets on the surface of a road.

In recent years, as a method of constructing a road marking line for the visually impaired directly on a road surface using a paint mainly composed of a thermoplastic resin, Japanese Patent Application Laid-Open No. Hei 7-138921 discloses a method of shaking a road on a road surface. Is discharged from the line forming outlet of the storage tank containing the heat fusible material to form lines L1 and L2 having a predetermined width. By controlling the formation of the opening of the outlet, the protrusions P on the lines L1 and L2
A method of laying a road surface line in which 1, P2 is integrally protruded is disclosed.

Further, in Japanese Patent Application Laid-Open No. 9-170209, a warning type marking line for forming a large number of button-shaped protrusions having a circular outer periphery is provided with a flat line of a predetermined width of 1 to 3 mm in advance on a road surface. Work, place a 4-6mm thick template with a large number of truncated cone-shaped mold holes on it, and pour thermoplastic paint over the template to form a number of button-shaped protrusions Construction methods have been proposed.

[0006] In Japanese Patent Application No. 9-348556, a button-shaped projection is formed, so that a template placed on a road surface can be injected in a non-contact manner and an appropriate amount of paint can be injected into a mold hole of the template. A construction apparatus capable of forming an accurate button-shaped projection is disclosed.

[0007]

However, of the above-mentioned conventional construction methods, any of the methods of arranging tiles having button-shaped protrusions formed in advance and joining or bonding the protrusions is not required. It is troublesome and costly. In particular, it is difficult to arrange them in a line and neatly, and there is a problem in workability.

On the other hand, in Japanese Unexamined Patent Publication No. Hei 7-138921, the dimension of forming the warning-shaped projection P2 is described in column 5, line 10 of the Japanese Unexamined Patent Publication No. The repeated opening and closing operation is repeated, so that a predetermined button-like projection P2 is placed on the line L2.
(For example, a diameter of 3 cm and a height of 5 mm), and the button-like projections P2 flow extremely slowly during the cooling of the heat-fusible material, and after cooling, the button has a rounded shape. It becomes a state. However, even if the formation of the projection P2 enables a square shape,
It is extremely difficult to form a square protrusion in the shape of a circular button by flowing slowly while the material is cooling, and it is extremely difficult to form a precise circular protrusion. With the development, there was a problem that construction could not be performed in a short time.

[0009] In Japanese Patent Application Laid-Open No. 9-170209, a road lane marking machine is generally used for constructing an ordinary band line on a template, and the paint hopper contacts the template. Therefore, it is necessary to move the paint hopper to a certain extent while pressing the paint hopper against the mold plate to flow the paint in the hopper. However, since the road surface is not completely flat, the entire surface of the template does not completely adhere to the road surface, and a portion floating from the road surface is generated. Therefore, due to the pressing force of the paint hopper, the floating portion of the template changes with the movement of the paint hopper, and the paint is injected and the hole of the template rises while it is not yet solidified, and it is originally formed into a button shape. No projections to be formed are formed, resulting in incompleteness. In addition, between the template and the paint hopper, aggregate (up to about 0.8 mm) mixed into the paint enters, and a gap is easily generated between the template and the paint hopper, and therefore, a thin layer is formed on the upper surface of the template. When the paint film is formed and it becomes thicker and thicker, it is connected to the paint in the hole, and when the paint is solidified and the template is removed, the upper part of the protrusion formed in the hole is partially missing and incomplete. In addition to the shape, a large amount of labor was required to remove the solidified coating film on the template. Furthermore, if there is unevenness on the road surface or the template itself warps, the amount of paint discharged from the conventional paint hopper is large, so that excess paint flows into the gap between the road surface and the template and the defective coating film Is formed.

In Japanese Patent Application Laid-Open No. Hei 9-348556, there is an advantage that an accurate button-shaped projection for injecting an appropriate amount of paint into a mold hole of a mold plate can be formed, and the mold plate can be easily maintained. However, it is necessary to sequentially move a template of a certain size and place it on the road surface, and it takes time and effort to place the template, during which the construction work of protrusions is interrupted, and In addition, there is a problem that it is not possible to perform a simple construction, the workability is poor, and furthermore, extra work such as loading and unloading of the template to the construction site is required.

The present invention has been developed in view of the above-mentioned conventional problems, and is intended for the construction of a warning-type road line for visually impaired persons in which accurate button-shaped projections can be formed on a road surface continuously and in a short time. The aim is to provide a method.

Another object of the present invention is to provide a method of constructing a warning-type road line for the visually impaired, which can automatically perform a button-shaped projection on a road surface.

[0013]

Means for Solving the Problems However, in the present invention,
In order to warn a visually impaired person of the danger of walking, a warning-type road line to be marked on the road surface is used to construct a warning-type road line. In a method of constructing a warning type road line for the visually impaired in which a large number of button-shaped projections (B) are formed, the band-shaped line (A) having a thickness of 1 to 3 mm is previously formed on the road surface with the paint (C). A projection forming rotor (2) that rotates in parallel with the road surface for applying and then applying the projection (B).
A plurality of the protrusions (B) -shaped slots (2a) are formed in the outer periphery of the protrusion forming rotor (2). While rotating the protrusion forming rotor (2) corresponding to the moving distance of the protrusion application machine (1), the paint (C) heated and melted from above is sequentially injected into the slot (2a) from the upper portion, and When the protrusion (B) is formed in the slot (2a), and the protrusion forming rotor (2) is rotated, and the slot (2a) into which the paint is injected reaches a lower position, The projections (B) are sequentially dropped and laid on the strip-shaped line (A) from inside the slot (2a).

In the present invention, when the paint (C) is injected into the slot (2a), the injection timing and the injection amount can be adjusted by an injection adjusting means (9). (C) is less wasteful, and is preferable for accurately forming the button-shaped protrusion (B) in the slot (2a).

Further, in the present invention, the paint (C) injected into the slot (2a) is completely filled in the slot (2a) by the shaping means (10), and an excess of the paint (C) is filled. (C) is removed. This allows the slot (2
This is preferable because the shape of the button-shaped protrusion (B) in a) becomes accurate and excess paint adhered to the outer peripheral surface of the protrusion forming rotor (2) is removed.

In the present invention, the projection (B) formed in the slot (2a) is forcibly dropped from the slot (2a) by the discharging means (11). This is preferable because it can be reliably dropped onto the road surface from the slot (2a).

Further, in the present invention, the strip-shaped line (A) is heated in advance, and the projection (B) is dropped from the slot (2a) onto the heated strip-shaped line (A). As a result, the dropped projection (B) is easily connected to the strip-shaped line (A) whose surface is in a molten state, and is thus securely fixed.

In the present invention, before the paint is injected into the slot (2a), air is blown and then a release agent is sprayed. Thereby, even if a part of the paint (C) remains in the slot (2a), the paint (C) is discharged by air, and the protrusion (B) is detached from the slot (2a) by the release agent. It is preferable because it is easy to perform.

Further, in the present invention, the projection (B) dropped from the slot (2a) onto the strip-shaped line (A) is
It is pressed from above by a pressing means (19). Thereby, the connection between the strip-shaped line (A) and the projection (B) is improved, the projection (B) is firmly fixed, the height of the projection (B) can be made uniform, and the upper surface can be made uniform. Is preferable because it can be shaped flat.

According to the present invention, the distance traveled by the projecting machine (1) is detected by the distance sensor (20), and the slot (2a) is detected by the slot sensor (21). Based on the processed data, at least the injection adjusting means (9), the discharging means (11), the injection timing of the release agent and the pressing means (19) are automatically controlled by the control device (22). Control. This is preferable because the construction of the projection (B) is accurate and easy.

[0021]

Embodiments of the present invention will be described below. 1 is an explanatory view showing the construction method of the present invention, FIG. 2 is a perspective view showing the construction method of the present invention, FIG. 3 is an explanatory view showing a construction machine used in the construction method of the present invention, and FIG. FIG. 5 is an explanatory view showing a method of forcibly dropping a projection from a projection forming rotor in a construction method, and FIG. 5 is a block diagram showing automatic control in the construction method of the present invention.

The construction method of the warning type road line for the visually impaired person according to the present invention will be described with reference to FIGS. 1, 2 and 3. First, the thickness of the road surface is previously coated with a thermoplastic paint (C). A flat strip line (A) of 1 to 3 mm is constructed. The band-shaped line (A) may be constructed by a conventional method of constructing a lane marking.

Next, a plurality of button-shaped protrusions having a circular outer periphery are arranged on the belt-shaped line (A) by using a protrusion construction machine (1) having at least a protrusion forming rotor (2) rotating in parallel with the road surface. The protrusion (B) is formed. The protrusion forming rotor (2) forming the protrusion (B)
As shown in FIG. 2 and FIG. 4, a cylindrical hub having a central portion, a large number of groove holes (2a) having the same shape as the protrusions (B) are formed in the outer periphery thereof, and the hub is rotated about the center. The shaft (3) is fixed, and a pulley (4) is attached to one end of the rotating shaft (3). On the other hand, a pulley (not shown) is also attached to the axle (6a) of the wheel (6) attached to the bogie (5) of the projection construction machine (1), and this pulley and the pulley on the projection molding rotor (2) side A belt (7) is hung between (4) to synchronize the rotation of the wheel (6) with the rotation of the protrusion forming rotor (2). Thereby, the protrusion forming rotor (2) rotates while moving in accordance with the moving distance of the protrusion processing machine (1).

In the projection machine (1), a paint tank (8) is disposed above the projection forming rotor (2), and a plurality of ejection nozzles (8a) at the lower end of the paint tank (8). A suitable amount of the coating material (C) heated and melted is sequentially injected into each of the slots (2a) reaching the uppermost position while rotating the projection forming rotor (2), and the projections are formed by the slots (2a). (B) is molded. The paint (C) to be injected is
A binder mainly composed of a thermoplastic resin, an aggregate, a pigment, a plasticizer, etc. are blended, and the melting temperature is 150 ° C. to 230 ° C. and the viscosity is 50%.
It is maintained between 00 cps and 60000 cps.

Then, the protrusion forming rotor (2)
Is rotated and the slot (2
When a) reaches the lowermost position, the projections (B) are sequentially dropped and laid on the strip-shaped line (A) from the inside of the slot (2a). The projection (B) dropped at this time hardly loses its shape because it is cooled and appropriately hardened while the projection forming rotor (2) is rotating. Good connectivity.

According to the present invention, the injection timing and the injection amount can be adjusted by the injection adjusting means (9) so that the molten paint (C) in the paint tank (8) is injected into the slot (2a). ing. The injection adjusting means (9) is provided with an opening / closing rod (9a).
And an actuator (9b). More specifically, the open / close rod (9a) is moved up and down by the actuator (9b), whereby the lower end of the open / close rod (9a) opens and closes the ejection nozzle (8a). ing. By controlling the vertical movement of the opening / closing rod (9a), it becomes possible to optimally set the timing at which the ejection nozzle (8a) should be opened / closed, the opening / closing time, and the like.

Further, in the present invention, the paint (C) is added to the slot (2a).
Is injected, and the protrusion (B) is shaped. The shaping means (10) uses a thin plate having the same width as that of the protrusion forming rotor (2), and uses the protrusion (B) of the protrusion forming rotor (2).
Is mounted on the carriage (5) in a horizontal state, with its tip abutting on the outer periphery on the side where the is inserted. As a result, the paint (C) injected into the slot (2a)
a) is pushed into and filled with excess paint (C)
Is scraped off, and the protrusion (B) is shaped.

In the present invention, the projections (B) may be naturally dropped by their own weight to drop the projections (B) from the slots (2a) onto the strip-shaped line (A). Depending on the temperature and viscosity characteristics, the timing of the drop is likely to vary slightly, and it is preferable that the drop is performed forcibly to ensure a reliable and accurate drop. The discharging means (11) is used for forcibly dropping. This discharging means (11)
As shown in FIG. 4, a small hole (2b) communicating with the inside of the cavity of the protrusion forming rotor (2) is formed in the bottom of the slot (2a), and air is formed in the cavity of the protrusion forming rotor (2). A pipe (11) connected to the tank (12) via a solenoid valve (11c)
a) is inserted, and the air nozzle (11b) attached to the tube (11a) is arranged toward the lowermost position through which each small hole (2b) passes. With this, when the air sent from the air tank (12) is blown out from the air nozzle (11b) when the slot (2a) reaches almost the bottom, the air enters the small hole (2b), The protrusion (B) in the slot (2a) is forcibly discharged by the pressure of the air, and surely falls to the correct position on the strip-shaped line (A).

Further, in the present invention, if the strip-shaped line (A) is heated by the heating burner (13) in advance, the surface of the strip-shaped line (A) is melted, and the projection (B) falls on the strip-shaped line (A). In addition, the bonding with the band-shaped line (A) is further enhanced, and firm fixing is enabled. The heating burner (13) is connected to a propane cylinder (14) mounted on the construction machine (1) by a pipe.

In the present invention, it is preferable to blow air before spraying the paint (C) into the slot (2a), and then to spray a release agent. As means for performing these operations, an air nozzle (15) is arranged toward an empty slot (2a) where the projection (B) of the projection molding rotor (2) has been dropped, and the air nozzle (15) Above the position, the release agent injection nozzle (16) is arranged toward the slot (2a), and the air nozzle (15) is connected to the air tank (12) by a pipe. ) Is connected to the release agent tank (17) via a solenoid valve (18), and the release agent tank (17) is connected to the air tank (12) by a pipe. The compressed air in the air tank (12) is blown out from the air nozzle (15) to clean the empty slot (2a) before the paint (C) is injected, and then pressurized with compressed air. The released release agent in the release agent tank (17) is injected from the release agent injection nozzle (16) into the slot (2a) by opening and closing control of the solenoid valve (18). As a result, extra deposits are removed from the empty slot (2a), and even if the adhesive paint (C) is injected into the slot (2a), the inside of the slot (2a) is removed. By the release agent, the molded projections (B) have good releasability, and the projections (B) fall easily.

In the present invention, it is preferable that the projection (B) dropped on the strip line (A) is pressed from above by the pressing means (19), and this pressing is performed by the projection (B) and the strip line. (A) and a projection (B)
And for shaping the projection (B). As an example of the pressing means (19),
The long pressing plate (19a) covering the horizontal row of projections (B) arranged on the strip line (A) is moved up and down by the actuator (19b).

Further, in the present invention, it is necessary to automatically control at least the injection adjusting means (9), the discharging means (11), the injection timing of the release agent and the pressing means (19), etc. In this automatic control, as shown in FIG. 5, the moving distance of the protrusion construction machine (1) is detected by the distance sensor (20), and the slot (2a) is detected by the slot sensor (21).
, And the two detection signals are arithmetically processed by the control device (22), and based on the processed data, the control device (22) controls the injection adjusting means (9), the discharging means (11), the release agent. It controls the operation of each actuator such as a solenoid valve for injection (18) and a pressing means (19). More specifically, the distance sensor (20) detects the moving distance of the construction machine (1), and in this embodiment, the wheel (6)
A pulse signal is extracted from the rotation by using the rotation of the wheel. Specifically, a gear wheel (not shown) fixed to the axle (6a) of the wheel (6), and a distance sensor (20) meshed with the gear wheel (not shown) Is installed. The slot sensor (21) is attached to the slot (2a) of the projection forming rotor (2). For example, a magnetic sensor is used as the slot sensor (21), but any other optical sensor or sensor capable of detecting the other slot (2a) may be used (see FIG. 3).
The control device (22) mainly contains a microcomputer, and the actuator (9b),
(19b) and the solenoid valves (11c) and (18) are controlled by a preset program based on the processing data of the detection signal.

In the present invention, the paint tank (8)
When the spray nozzle (8a) is heated while being heated by the heating burner (23), the paint (C) solidifies and the spray nozzle (8a) hardens.
The paint (C) is easily ejected from the ejection nozzle (8a) even in a long line construction without clogging a).

[0034]

The present invention has the following effects.

According to the present invention, a circular button-shaped projection (B) is formed into an accurate shape by the projection forming rotor (2), and the arrangement of the projections (B) becomes accurate. Is very good. In particular, the formation of the projections (B) by the slots (2a) is extremely accurate because the entirety of the projections (B) to be surfaced after the application is molded.

In the present invention, since a template is not required, accurate construction can be performed continuously and in a short time only by the construction machine (1).

Further, according to the present invention, since the correctly formed projections (B) are dropped and constructed, even if the road surface has some undulations or irregularities, the construction can be carried out with almost no influence.

Further, according to the present invention, automatic control is easy and the construction is automated, so that human labor and construction costs can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a construction method of the present invention.

FIG. 2 is a perspective view showing a construction method of the present invention.

FIG. 3 is an explanatory view showing a construction machine used in the construction method of the present invention.

FIG. 4 is an explanatory view showing a method for forcibly dropping a projection in the construction method of the present invention.

FIG. 5 is a block diagram showing automatic control in the construction method of the present invention.

[Explanation of symbols]

 Reference Signs List A strip-shaped line B projection C paint 1 projection construction machine 2 projection molding rotor 2a slot 2b small hole 9 injection adjusting means 10 shaping means 11 discharging means 19 pressing means 20 distance sensor 21 slot sensor 22 controller

Claims (8)

[Claims] 1. In order to warn a visually impaired person of danger during walking, a warning-type road line marked on a road surface is used for construction of a flat strip line (A) with a thermoplastic paint (C). In the method for constructing a warning type road line for the visually impaired in which a large number of button-shaped projections (B) having a circular outer periphery are formed on the road surface, the paint (C) having a thickness of 1 to 3 mm is previously applied on the road surface. A belt-like line (A) is constructed, and then a projection-forming machine (1) having at least a projection-forming rotor (2) rotating in parallel with a road surface for constructing the projection (B) is used; On the outer periphery of the projection forming rotor (2), a large number of slots (2a) having the shape of the projections (B) are formed, and the projections are formed in accordance with the moving distance of the projection processing machine (1). While rotating the product forming rotor (2), from the top into the slot (2a) The coating (C) melted by heating is sequentially injected to form the projections (B) in the slots (2a), and then the projection forming rotor (2) is rotated to form the coatings (C). ) Is injected into the slot (2a) reaches the lower position, the protrusions (B) from the inside of the slot (2a) are sequentially dropped and laid on the strip-shaped line (A), characterized in that To build warning-type road lines for visually impaired people. 2. An injection adjusting means for injecting the paint (C) into the slot (2a) by adjusting an injection timing and an injection amount.
The method for constructing a warning-type road line for visually impaired persons according to claim 1, wherein the method can be adjusted according to (9). 3. The paint (C) injected into the slot (2a) is completely filled in the slot (2a) by a shaping means (10), and excess paint (C) is filled. 3. The method for constructing a warning-type road line for visually impaired persons according to claim 1 or 2, wherein shaping is performed to remove the road. 4. The projection (B) formed in the slot (2a) is forcibly dropped from the slot (2a) by a discharge means (11). Construction method of warning type road line for the visually impaired. 5. The strip-shaped line (A) is heated in advance, and the projection (B) is dropped from the slot (2a) onto the strip-shaped line (A) in the heated state. 4. The construction method of the warning-type road line for visually impaired persons according to 4. 6. The warning for a visually impaired person according to claim 1, wherein air is blown before the paint (C) is injected into the slot (2a), and then a release agent is jetted. Construction method of the shape road line. 7. The visual system according to claim 1, wherein the projection (B) dropped from the slot (2a) onto the strip-shaped line (A) is pressed from above by a pressing means (19). Construction method of warning type road line for the disabled. 8. A distance sensor (20) for moving a distance of the protrusion construction machine (1), and a slot sensor (21) for a slot (2a).
The control device (22) detects at least the injection adjustment means (9), the discharge means (11), the injection timing of the release agent, 8. The method according to claim 7, wherein the pressing means (19) and the like are automatically controlled.