JP2000273815A - Liquid spraying device for road surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly spray a liquid by periodically moving a spray nozzle train constituted of a plurality of spray nozzles arranged linearly in the prescribed plane. SOLUTION: A plurality of spray nozzles 3-1, 3-2... are linearly provided on a spray bar 4 to form a spray nozzle train, the bar 4 can be periodically moved on a circular, elliptical, oblong or polygonal locus in the horizontal plane parallel with the spray nozzle train, and this liquid spraying device 1 for the road surface is fitted to a work vehicle 2. The spray nozzles 3-1, 3-2... have a flat spray pattern as required, and the flat plane has an angle in the range of 0-90 deg. in the direction of the nozzle train. The bar 4 may be periodically moved on a desired locus in the vertical plane parallel with the spray nozzle train. When (n) spray nozzle trains are provided, the nozzle trains are moved at the phase difference of 360 deg./n. A liquid material can be sprayed highly uniformly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface liquid spraying device, and more particularly to a road surface liquid spraying device capable of uniformly spreading a pavement liquid material such as a binder.

[0002]

2. Description of the Related Art When performing road pavement, a bituminous material such as asphalt or asphalt emulsion may be sprayed on a road surface as a primer or a binder.
In spraying these liquid materials on the road surface, for example, a work vehicle such as an asphalt distributor is used to spray the liquid material on the road surface. The work vehicle is usually provided with a plurality of spray nozzles arranged linearly in a direction orthogonal to the traveling direction of the work vehicle, and liquid materials are ejected from the spray nozzles,
Spread on the road.

[0003] It is desirable that the spraying of the liquid material is performed uniformly. Therefore, conventionally, the spraying characteristics of a plurality of spray nozzles to be used are made as uniform as possible, or the spraying areas from the adjacent spray nozzles are mutually separated. Attempts have been made to cancel out variations in the characteristics of individual spray nozzles, for example by partially overlapping. However, considering that it is necessary to use a commercially available spray nozzle or replace some of the spray nozzles due to a failure or the like, there is a limit to making the spray characteristics of multiple spray nozzles used the same. is there. Also, even if the spraying areas from adjacent spray nozzles partially overlap, the height of the spray nozzles from the road surface, that is, the spraying height, may cause the liquid material to be sprayed to be sprayed in a mist state. For this reason, there is a restriction that it cannot be raised indiscriminately, and there is a certain restriction on the arrangement interval of the spray nozzles due to the size of the spray nozzle itself. It was at best. If the spray area from adjacent spray nozzles overlaps only twice or at most three times, it is difficult to achieve uniform spraying, depending on the type of liquid material used and the spraying environment. Was often observed in the sprayed area as a plurality of streaks along the traveling direction of the work vehicle.

[0004] Such uneven distribution is caused when a relatively large amount of bituminous material is applied as a primer or a binder per unit area, or when an asphalt mixture or the like is spread thickly on the application surface. Although it is not a problem, for example, as in the case of the spraying type surface treatment method, a relatively small amount of binder is sprayed per unit area on the road surface, and the aggregate is sprayed from above to form a surface treatment layer. In some cases, it can lead to unexpected obstacles. That is, in the spraying type surface treatment method, the aggregate is bonded to the road surface by the bonding material scattered on the road surface, so that the scattering of the bonding material is uneven, for example, the amount of the bonding material sprayed is too small. If there is a place, the bonding strength between the aggregate and the road surface will be weak at that point, and the aggregate will be scattered by traffic of vehicles,
There is a possibility that the constructed surface treatment layer is destroyed.
Conversely, if there are places where the amount of the binder spread is too large,
At that point, the binder rises to the upper surface of the sprinkled aggregate layer, which not only impairs the aesthetic appearance but also causes the road surface to flash, becomes extremely slippery, and causes slip.

[0005] As described above, in a construction method that requires detailed construction management and process management at the time of construction, such as a spraying type surface treatment method, for example, spraying of a liquid material is at an unprecedented level. Although uniformity is required, there has hitherto been no road surface liquid spraying device that meets such requirements.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art, and is intended to uniformly remove bituminous materials such as asphalt and asphalt emulsion and other liquid materials for paving. It is an object of the present invention to provide a road surface liquid spraying device capable of spraying the liquid uniformly.

[0007]

According to an investigation conducted by the present inventors, there is a limit in making the characteristics of the spray nozzles used uniform, and it is difficult to procure a plurality of spray nozzles having exactly the same characteristics. In addition, the ejection density of the liquid material ejected from a single spray nozzle is not completely uniform and has unevenness in place, and even with respect to a single spray nozzle, it is uniform over the entire spray area. It was found that no sprinkling was performed. For example, as shown in FIG. 1, the amount of spray from a single spray nozzle also varies in location. In FIG. 1, reference numeral 3 denotes a spray nozzle, 4 denotes a spray bar, 5 denotes a spray pattern, P denotes a spray amount, and N denotes a spray position. Therefore, the non-uniformity of spraying between a plurality of spray nozzles and in a single spray nozzle is eliminated, and the uniformity of spraying at an unprecedented level required in, for example, a spray type surface treatment method is realized. As a result of repeated research, it was possible to achieve an unprecedented level of uniformity of spraying by moving multiple spray nozzles so that the movement trajectory of each spray nozzle draws a periodic figure. The inventors have found out what is possible and completed the present invention.

That is, according to the present invention, at least one spray nozzle row composed of a plurality of spray nozzles arranged in a straight line, and the movement trajectory of each spray nozzle is set in the row direction of the spray nozzle row. The above object is achieved by providing a road surface liquid spraying device having a mechanism for moving a periodic figure in a plane parallel to the above.

The plane on which the spray nozzle row moves so as to draw a periodic figure may be horizontal, vertical, or any other angle as long as it is a plane parallel to the row direction of the spray nozzle row. Typically, it is a horizontal or vertical plane. A spray nozzle row composed of a plurality of spray nozzles is usually mounted on a work vehicle, so if the spray nozzle row is mounted in a direction orthogonal to the traveling direction of the work vehicle, it is parallel to the row direction of the spray nozzle row. The vertical plane is a vertical plane orthogonal to the traveling direction of the work vehicle. On the other hand, when the spray nozzle row is attached in a direction parallel to the traveling direction of the work vehicle during spraying, the vertical plane parallel to the row direction of the spray nozzle row is a vertical plane parallel to the traveling direction of the work vehicle.

There is no particular limitation on the mechanism for moving the spray nozzle row, and any mechanism can be used so that the movement locus of the spray nozzle draws a periodic figure in a plane parallel to the row direction of the spray nozzle row. Any mechanism may be used. The spray nozzle row is usually configured as a plurality of spray nozzles attached to the spray bar, so that the spray bar can be moved to move the spray nozzle row. When a spray bar is not used, a plurality of spray nozzles may be individually moved, or a plurality of spray nozzles may be moved as a group via mechanical coupling means.

The term "periodic figure" as used in the present invention means a figure viewed from a coordinate system on a road surface liquid spraying device,
Figures including circles, ellipses, ellipses, polygons, curves, and other curves, and figures that are a mixture of straight lines and curves may be used. A circle is most preferable from the viewpoint of the uniformity of spraying achieved. The speed and / or amplitude of the movement of the spray nozzle row is variable, and is appropriately adjusted and changed according to the type of the liquid material to be sprayed and the condition of the road surface. The speed and / or amplitude of the movement of the spray nozzle row may be kept constant during the spraying operation or may be varied, such as stopping at a specific position, reversing the direction of movement, and stopping and moving. You may make it perform it alternately. In addition, the amplitude of the motion of the spray nozzle row means a length of the periodic direction drawn by the moving trajectory of the spray nozzle in the row direction of the spray nozzle row and the direction perpendicular to the row direction of the spray nozzle row. If the periodic figure to be drawn is a circle, it will be the diameter. The liquid spraying device for a road surface according to the present invention is characterized in that the spray nozzle row is moved so that its movement trajectory draws a periodic figure. Naturally, when drawing a random figure instead of a figure, if the same result as when moving the figure to draw a periodic figure can be obtained in terms of the uniformity of scatter, Within range.

As described above, in the road surface liquid spraying apparatus of the present invention, one or a plurality of spray nozzle rows form a periodic pattern in a plane whose movement trajectory is parallel to the row direction of the spray nozzle rows. Since the spray nozzles move in a drawing manner, the spray areas of the spray nozzles existing in the motion amplitude range in the row direction of the spray nozzle rows overlap with each other, and even when the installation interval of the spray nozzles is limited, also when the spray nozzles are located from the road surface. Even in the case where the height is restricted, it is possible to easily overlap the spraying areas of the adjacent spray nozzles not only with double, triple, but also quadruple or more. At this time, it is needless to say that the number of spray areas can be changed by adjusting the movement amplitude of the spray nozzle row in the row direction or by changing the number of spray nozzle rows to be used. As described above, in the road surface liquid spraying apparatus of the present invention, since the spray areas from the respective spray nozzles overlap in a multiplex manner, even when the spray characteristics vary among the plurality of spray nozzles, Even when there is a non-uniformity in the injection amount in the nozzle, the dispersion and the non-uniformity can be easily canceled out, and a uniform level of dispersion can be achieved. Furthermore, in the road surface liquid spraying apparatus of the present invention, as a result of moving the spray nozzles, not only the horizontal position of each spray nozzle but also each spray The distance between the nozzle and the road surface also changes periodically. Therefore, the size of the spray area on the road surface of the liquid material sprayed from each spray nozzle also changes, which is effective for canceling the unevenness of the spray amount, and the spray height of the spray nozzle changes due to the movement of the spray nozzle row. In that case, more uniformity is achieved.

The liquid spraying device for road surface according to the present invention can be provided with two or more spray nozzle arrays.
When a plurality of spray nozzle rows are provided, it is desirable that they are parallel to each other. The plurality of spray nozzle rows can be moved with or without phase synchronization with each other, but it is desirable to move with the phase synchronization. When a plurality of spray nozzle rows are moved in synchronization with each other in phase, the phases should be the same, or the phase difference should be equal.To equalize the phase difference, When n is a natural number of 2 or more and there are n spray nozzle rows, the phase interval is preferably 360 / n degrees. When a plurality of spray nozzle rows are moved in the same phase, the plurality of spray nozzle rows can be moved by a single drive mechanism. The road surface liquid spraying device of the present invention is usually
Because it moves on the road surface, such as being mounted on a work vehicle,
By providing a plurality of spray nozzle rows, it is possible to obtain a plurality of spray areas that are as many as the number of spray nozzle rows as compared with the case where only one spray nozzle row is provided. In addition, even when using a plurality of spray nozzle rows, the speed and / or amplitude of the movement of each spray nozzle row is variable, and may be appropriately adjusted according to the type of liquid material to be sprayed or the condition of the road surface. Be changed. The speed and / or amplitude of the movement of each spray nozzle row may be kept constant during the spraying operation or may be varied, and a plurality of spray nozzle rows may be stopped at a specific position, or may be stopped and moved. May be alternately performed.

The type of the spray nozzle used in the road surface liquid spraying apparatus of the present invention is not particularly limited. A spray nozzle having a circular full-surface spray pattern, a square full-surface spray pattern, a ring-shaped spray nozzle, etc. It may have a pattern or another spray pattern, but from the viewpoint of realizing uniform multiple spraying, it is desirable to use a spray nozzle having a flat spray pattern.
The flat-shaped spray pattern is a substantially linear spray pattern in which a cross section perpendicular to the spray direction is elongated in a fan shape at a certain spray angle α from a spray nozzle, and the flat surface referred to in the present invention is a fan-shaped spray pattern. It shall refer to the face of the fan in the spray pattern.

[0015] The road surface liquid spraying apparatus of the present invention is preferably mounted on a work vehicle. The work vehicle is not limited to a work vehicle for road pavement work, but also includes a liquid spray vehicle that sprays a liquid for preventing freezing on a road surface and a liquid for dustproof treatment on an unpaved road. If necessary, it can also be used for fertilizers for agriculture and for spraying asphalt emulsion on fields. However, since the spraying apparatus for road surface liquid of the present invention can realize spraying with extremely excellent uniformity, spraying work requiring a new level of uniformity, such as a spraying type surface treatment method, is required. It is preferably used. Examples of working vehicles suitable for the spraying type surface treatment method include, for example, Japanese Patent Application Nos. 10-158664, 10-158665, and 10-108, filed by the same applicant.
A work vehicle equipped with at least an aggregate dispersing device and a binder dispersing device as disclosed in Japanese Patent Application No. 172107, Japanese Patent Application No. 10-172119, and Japanese Patent Application No. 10-177886. The road surface liquid spraying device of the present invention is mounted on such a work vehicle as a binder spraying device, and is configured as a work vehicle for a spraying type surface treatment method.

There is no particular limitation on the liquid material sprayed by the road surface liquid spraying apparatus of the present invention. Bituminous materials such as asphalt and asphalt emulsion, water, resin, other emulsions, chemicals, liquid fertilizer, antifreeze, drying Any liquid material that can be normally sprayed on the road surface, such as a preventive liquid, can be applied to any material. Further, the road surface in the present invention is not necessarily limited to a paved road surface, an unpaved road surface, and can be used for watering or spraying liquid materials such as a plaza, a parking lot, a cargo hold, a playground, a field, a coast, a wilderness, a green space, and the like. It includes all of the places where it takes place.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

FIG. 2 is a side view showing an example of the road surface liquid spraying apparatus of the present invention. In FIG. 2, reference numeral 1 denotes a road surface liquid spraying device of the present invention, which is attached to a work vehicle indicated by 2. 3-1, 3-2, 3-3, 3-4 ...
Denotes a spray nozzle, which is attached to the spray bar 4 and constitutes a spray nozzle row. 5-
1, 5-2, 5-3, 5-4,... Indicate the spray patterns sprayed from the spray nozzles 3-1, 3-2, 3-3, 3-4, respectively. Shows the case of the flat type spray pattern, but the spray pattern of the spray nozzles 3-1, 3-2, 3-3, 3-4,... Is not limited to the flat type. .

Each of the spray patterns 5-1, 5-2, 5-
., 5-4... Overlap with the adjacent spray patterns in a half area thereof, and the work vehicle 2 is advanced in the direction orthogonal to the spray bar 4 in this state, so that In this case, a double overlapping spraying is performed. Reference numeral 6 denotes a mechanism for circularly moving the spray bar 4 in a horizontal plane parallel to the row of spray nozzles. In the illustrated example, a crank mechanism using a disk is employed. The movement is not limited to circular movement. For example, if the spray bar 4 is attached to a chain stretched into an arbitrary shape such as an ellipse, a triangle, and a quadrangle by a plurality of gears, the chain is advanced to the spray bar 4 by rotating the gears to advance the chain. Can be made to move along the stretched shape. As a result of the spray bar 4 performing a circular motion in a horizontal plane parallel to the spray nozzle row, when viewed from the side, the spray bar 4
In FIG. 2, reciprocation is performed in the direction indicated by arrow A. In addition, α is an ejection angle of the liquid material ejected from the spray nozzle, and 7 is a road surface.

FIG. 3 is a plan view of the road surface liquid spraying device shown in FIG. 2, and the same components as those in FIG. 2 are denoted by the same reference numerals. As shown in FIG. 3, each spray nozzle is attached to the spray bar 4 such that the flat surface of the flat spray pattern has an angle β with the row direction of the spray nozzle row. The angle β can take any value within a range of 0 to 90 degrees. The value of the angle β can be appropriately determined according to the spray angle of the spray nozzle to be used, the distance from the spray nozzle to the road surface, the required overlapping number of sprays, etc., but is usually 5 to 45 degrees, preferably , 10
The range of 40 to 40 degrees, more preferably 15 to 35 degrees, is good for obtaining an appropriate number of sprays. 8-1, 8-2, 8-
3, 8-4 are spray nozzles 3-1 and 3-, respectively.
3, 3-3, and 3-4, which are circles in the example of FIG. 3, but are figures other than circles, such as ellipses, ellipses, polygons, and other curves, and straight lines. As described above, a figure composed of a curve may be used. In the example of FIG. 3, the direction of movement of the drive mechanism 6 may be reversed at a position of less than one rotation so that the spray nozzle draws an arc-shaped movement locus.

R is the radius of the circular motion, w is the distance between the spray nozzles 3-1, 3-2, 3-3, 3-4,. There is no particular limitation on the size of r, but if it is too small, there is no point in moving the spray nozzle row,
On the other hand, if the size is too large, the mechanism is unreasonable, so that the range is usually 1 to 90 cm, preferably 2 to 70 cm.
cm, more preferably in the range of 3 to 50 cm. Also, there is no particular limitation on the size of w, but if it is too small, the size of the spray nozzle itself and the size of the parts for mounting the spray nozzle interfere with the mounting, and it becomes difficult to mount. , Causing a failure, and conversely, if it is too large, the number of spray nozzles is reduced and uniform spraying becomes difficult to achieve, so it is usually in the range of 3 to 30 cm, preferably 5 to 25 cm, more preferably Is 7-2
A range of 0 cm is good. The relationship between r and w can be appropriately determined according to the spray angle of the spray nozzle to be used, the distance from the spray nozzle to the road surface, the number of spray nozzle rows, the required number of sprays, and the like. r = w
/ 3-3w, preferably r = w / 2-2w.

In the example of FIG. 3, r = w, and as a result of the driving mechanism 6 performing a circular motion in the direction of arrow B, the spray nozzle rows 3-1, 3-2, 3-3, 3-4,. Move along the movement trajectories 8-1, 8-2, 8-3, 8-4,..., And when the spray bar 4 moves to the leftmost position in FIG. Is the position where the spray nozzle 3-1 existed before the movement, and the spray nozzle 3-
4 moves to the position where the spray nozzle 3-2 existed before moving. Road surface liquid spraying apparatus 1 of the present invention
Is usually moving at a constant speed in the direction indicated by arrow C, while the movement speed of the drive mechanism 6 is
Since the work vehicle 2 is set to perform at least one cycle of movement until the work vehicle 2 moves a distance of 2r, that is, a distance corresponding to the amplitude of the drive mechanism 6 in the traveling direction of the work vehicle 2. In the third example, by moving the spray nozzle row, it is possible to perform at least twice, that is, at least quadruple overlapping spraying without moving the spray nozzle row. Needless to say, if the movement speed of the spray nozzle row is increased, multiple spraying can be performed. Thereby, even if the spraying characteristics vary from spray nozzle to spray nozzle, or even if there is uneven spraying on a single spray nozzle, those unevenness and uneven spraying are canceled out each other, and uniform spraying can be performed. .

FIG. 4 is a view showing another example of the road surface liquid spraying apparatus according to the present invention.
-1, 3-2 and 3-3 are rotating disks 9-1 and 9 respectively.
-2, 9-3. Rotating disk 9-1,
9-2 and 9-3 are rotation axes 10-1 and 10-, respectively.
2 and 10-3, so that the spray nozzles 3-1, 3-2 and 3-3 each have a circular movement trajectory 8
-1, 8-2, and 8-3 are drawn. in this way,
In the road surface liquid spraying device of the present invention, each of the spray nozzles 3-1, 3-2, 3-3 may be moved by an independent driving device.

FIG. 5 is a view showing still another example of the road surface liquid spraying apparatus according to the present invention, in which the spray nozzle row is moved in a vertical plane parallel to the row direction of the spray nozzle row. It is. The spray bar 4 is attached to the drive mechanism 6 as shown in FIG. 5, and moves along the vertical plane while drawing a circular movement trajectory as 4D → 4E → 4F → 4G → 4D with the movement of the drive mechanism 6. Moving.

FIG. 6 is a diagram showing a change in the degree of overlap of the spray patterns from the respective spray nozzles when the spray bar 4 is moved as shown in FIG. In the illustrated example, when the spray bar 4 is located at the lowest position 4D in the vertical plane, the spray patterns from the respective spray nozzles overlap by half, so that a double spray is obtained as a whole. ing. In this state, the spray bar 4 is changed from 4D to 4E.
When moving in a vertical plane while drawing a circular movement trajectory as → 4F → 4G → 4D, each ejection pattern becomes 5-1D,
5-2D, 5-3D, 5-4D, ... → 5-1E, 5
-2E, 5-3E, 5-4E, ... → 5-1F, 5-
2F, 5-3F, 5-4F, ... → 5-1G, 5-2
G, 5-3G, 5-4G, ... → 5-1D, 5-2
D, 5-3D, 5-4D,..., And multiple spraying with extremely excellent uniformity is realized. The movement trajectory of the spray nozzle row composed of the spray nozzles attached to the spray bar 4 is not limited to a circle, as in the case where the spray nozzle row is moved in a horizontal plane. When the spray bar 4 is at the lowermost position 4D, the distance from the spray nozzle to the road surface 7 should be at least 10 assuming that the road surface 7 has various irregularities and laid objects.
cm or more, preferably 15 cm or more, more preferably 2 cm or more.
It is better to have it at least 0 cm. When the spray bar 4 is at the uppermost position 4F, the distance from the spray nozzle to the road surface 7 is such that the spray pattern is disturbed by wind or the like, or the sprayed liquid material becomes mist and disperses into the air. It is preferable that the thickness be 50 cm or less so as not to cause the problem. The rotation speed of the drive mechanism 6 is, for example, the traveling speed of a working vehicle equipped with the road surface liquid spraying device of the present invention,
That is, it is desirable that the speed is sufficiently faster than the application speed of the spraying.

In the above example, the plane of movement of the spray nozzle row was either a horizontal plane or a vertical plane, but the plane of movement of the spray nozzle row is not limited to this, and any angle between horizontal and vertical You may exercise in the plane with

FIG. 7 shows an example in which two spray nozzle rows are provided, and is a plan view when the spray nozzles are moved in a horizontal plane.
For example, when one of the spray bars 4-1 is located at the position G, the other spray bar 4-2 is located at the position E so that the other spray bars 4-2 have a phase difference of 180 degrees in the horizontal plane. Is attached to the drive mechanism 6 so as to move. Thus, the two spray nozzle rows are 180
By moving with a phase difference of more than one degree, a more even distribution is possible. In the example of FIG.
1 and 4-2 are configured to move in the same horizontal plane. However, the mounting height of each spray bar may be changed to move in a different horizontal plane. The movement areas of the two spray bars 4-1 and 4-2 can be partially overlapped. When the number of the spray nozzle rows is three, the phase difference is preferably 120 degrees, and when the number is four, the phase difference is preferably 90 degrees.
It is preferable that n is the number of the spray nozzle rows and each phase difference is (360 / n) degrees.

Further, as shown in FIG. 8, three spray bars 4-1, 4-2, 4-3 may be attached to a single driving device 6 so as to be moved simultaneously. in this case,
The spray nozzle position of each spray bar is desirably shifted by (１ ／) w as shown in the figure. FIG. 8 shows a case where the number of spray bars is three, but it is needless to say that the number of spray bars is not limited to three, and in that case, the position of the spray nozzle attached to each spray bar is (1 / n). It is desirable that they are shifted by w. Here, n is the number of spray bars.

FIG. 9 is a side view showing an example in which two spray nozzle rows are moved in a vertical plane.
, The spray bar 4-1 is attached to the position F on the other side of the drive mechanism 6, and the spray bar 4-2 is attached to the position D on the front side of the drive mechanism 6, so that they move with a phase difference of 180 degrees from each other. Is configured. In the example of FIG. 9, the two spray bars 4-1 and 4-2 are attached to the same drive mechanism 6, but an individual drive mechanism 6 may be prepared for each of the spray bars 4-1 and 4-2. The good thing is, of course.
Also, three or more spray nozzle rows may be used as in the case of FIGS.

In the example of FIG. 9, the amplitude 2r of the movement of the spray nozzle array and the lowermost position D
Is selected so that 2r = H / 2, the spray nozzle row 3-1 at the lowermost position D, as shown in FIG.
, 3-2D, 3-3D,..., And at the same time, a spray nozzle row 3-1F, 3-2F, 3-3F,. Thus, it is possible to realize a triple overlapping overlapping application. That is, the spray nozzle row 3-1 at the lowermost position D
D, 3-2D, 3-3D, ..., injection pattern 5
-1D, 5-2D, 5-3D,... Overlap each other by １ ／, and 5-1D + 5-2D, 5-2D + 5-3
.., While the spray nozzle rows 3-1F, 3-2F,
Injection patterns 5-1F, 5-2 from 3-3F,...
F, 5-3F,... Overlap with each other by 2/3,
As shown in FIG. 10, 5-3F + 5-4F + 5-5F,
3-4F + 5-5F + 5-6F,... Are sprayed three times. At other positions, a distribution between double and triple is performed, resulting in a very uniform distribution. In this case, the mounting intervals and mounting positions of the spray nozzles constituting each spray nozzle row are the same, the spray angle α is almost the same, and when the spray nozzle is at the lowermost position D, double spraying is performed. Needless to say, the relationship with the distance H to the road surface is selected. It is desirable that the positions of the spray nozzles be the same between the uppermost spray nozzle row and the lowermost spray nozzle row.

As shown in FIG. 10, double spraying is performed by the spray nozzle row at the lowermost position D, and the uppermost position F
In the case where triple spraying is performed by the spray nozzle row in the above, spraying can be performed with the two spray nozzle rows stopped at the uppermost position and the lowermost position. The stop may be continued throughout the application of the liquid material, or may be repeated at regular intervals or at random time intervals.

The same is true when two spray nozzle rows are moved in a horizontal plane as shown in FIG.
The present invention can also be realized when the spray nozzle rows are configured to move in different horizontal planes with different mounting heights. That is, the spray patterns sprayed from the spray nozzle row installed below are made to overlap doubly on the road surface, and at the same time, the distance H from the spray nozzle row installed below to the road surface and the spray nozzle installed below By choosing the relationship with the distance R from the row to the row of spray nozzles mounted above, such that R = H / 2, double overlapping spraying with the row of spray nozzles mounted below and mounting above Triple overlapping spraying by the spray nozzle row can be realized at the same time. In this case, the spraying can be performed in a state where the movement of the spray nozzle row in the horizontal plane is stopped. The stop may be continued throughout the application of the liquid material, or may be repeated at regular intervals or at random time intervals. There is no particular limitation on the position where the spray nozzle row is stopped,
It is desirable to stop at a position where the positions of the spray nozzles constituting each spray nozzle row are aligned.

In the above example, the characteristics and number of the spray nozzles constituting each of the spray nozzle rows and the installation intervals are the same between the respective spray nozzle rows, but when a plurality of spray nozzle rows are used. It is also possible to change the characteristics and number of the spray nozzles constituting the spray nozzle row, and further, the installation interval for each spray nozzle row so that a desired spray pattern can be realized by each spray nozzle row. is there. In the above example, when there are a plurality of spray nozzle rows, all of the plurality of spray nozzle rows are moved, but only a part of the plurality of spray nozzle rows is moved. Needless to say, this may be done. Furthermore, depending on the required spray width of the liquid material, the length of the spray bar can be varied, for each individual spray nozzle attached to each spray nozzle, or for every two or more spray nozzles. It goes without saying that the spray width can be freely adjusted by controlling the injection of the liquid material on and off. On / off control of the injection of the liquid material from the spray nozzle is usually performed by, for example, an electromagnetic valve or the like.

Hereinafter, the present invention will be described in more detail with reference to Examples.

<Example 1> Liquid for road surface shown in FIGS. 2 and 3
Create a body spraying device, mount it on a work vehicle, and spray liquid material.
Made a cloth. Details are as follows. Number of spray bars: 1 Type of spray nozzle: Flat type (spray angle α: 60
Degree) Spray nozzle mounting angle β: 20 degrees Spray nozzle mounting interval w: 7.2 cm Distance from spray nozzle to road surface H: 20 cm Spray nozzle row motion: circular motion in horizontal plane (radius r:
7.2 cm, rotation speed: 120 r. p. m. ) Number of sprays on the road: triple spray (spray amount: 1.3 l)
Tol / m²Liquid material to be sprayed: Asphalt emulsion (trade name "Sanpi
-Sol ", manufactured by Nichireki Co., Ltd.) Spraying pressure: 1kgf / cm²  Spraying speed: 3m / min

Using the above-described road surface liquid spraying apparatus and liquid material, spraying was performed over a width of 1.5 m and a length of 10 m. Spraying, so that unevenness of spraying can be clearly observed,
A white nonwoven fabric was put on the road surface, and the operation was performed from above. After spraying,
The state of the spraying surface was visually observed, but no unevenness in spraying was observed.

Comparative Example 1 A liquid material was sprayed in the same manner as in Example 1 except that the spray nozzle row was not moved. After spraying, when the spraying surface was visually observed, a plurality of line-like spray unevenness along the construction direction was observed.

<Example 2> A road surface liquid spraying device capable of moving a spray nozzle array in a vertical plane was manufactured, and the spray nozzle was moved in a vertical plane circular motion (radius r:
3.3 cm, rotation speed: 120 r. p. m. ), And the distance from the spray nozzle to the road surface is 13.5c at the lowest position.
m, the liquid material was sprayed in the same manner as in Example 1 except that the uppermost position was 20 cm. After spraying, the spraying surface was visually observed, but no unevenness in spraying was observed.

Comparative Example 2 A liquid material was sprayed in the same manner as in Example 2 except that the spray nozzle row was not moved. After spraying, when the spraying surface was visually observed, a plurality of line-like spray unevenness along the construction direction was observed.

<Embodiment 3> An aggregate dispersing device as disclosed in Japanese Patent Application No. 10-158664 by the same applicant is attached to the rear part of the working vehicle used in Embodiment 1, and white on the road surface. The same asphalt emulsion as in Example 1 was directly scattered without forming a nonwoven fabric, and at the same time, aggregate was scattered from the scattered surface, and a scatter surface treatment method was applied. As the aggregate, crushed stone having a particle size of 5 to 8 mm (produced by Kuzu, Tochigi Prefecture) was used.
0 (liter / m ² ), aggregate 8.0 (liter / m ² )
Met. After spraying the aggregate, the sprayed surface was lightly compacted to remove the floating stone, and the sprayed surface was visually observed, but no seepage of the asphalt emulsion to the sprayed surface was observed. Also,
Immediately after the visual observation, the vehicle was passed through a heavy-loading vehicle 30 times on a test basis, but no aggregate was scattered.

[0041]

As described above, according to the road surface liquid spraying apparatus of the present invention, one or a plurality of spray nozzle rows composed of a plurality of spray nozzles are arranged in parallel with the row direction of the spray nozzle rows. Can be moved in such a way as to draw a periodic figure on the same surface, so that even if the spray characteristics vary among the spray nozzles used, Even if there is a substantial non-uniformity, these variations and non-uniformities cancel each other out, and it is possible to realize a highly uniform distribution of the liquid material. Therefore, a spray nozzle that can be used freely can be selected and used from among commercially available standard spray nozzles, thereby increasing the degree of freedom in device design and manufacturing a high-performance road surface liquid spraying device at low cost. Can be. Moreover, even when each spray nozzle is replaced due to a failure or the like, a commercially available standard product is sufficient, so that there is an advantage that maintenance and management of the apparatus is extremely easy. The road surface liquid spraying device of the present invention is particularly effective in a method requiring a high degree of uniformity of spraying, such as a spraying type surface treatment method, and performs a single operation together with an aggregate spraying device. By being mounted on a car,
It also exhibits excellent performance as a spray-type surface treatment vehicle and brings new possibilities to the technical field.

[Brief description of the drawings]

FIG. 1 is a diagram showing a variation in an injection amount from a single spray nozzle.

FIG. 2 is a side view showing an example of the road surface liquid spraying device of the present invention.

FIG. 3 is a plan view showing an example of the road surface liquid spraying device of the present invention.

FIG. 4 is a plan view showing another example of the road surface liquid spraying device of the present invention.

FIG. 5 is a side view showing still another example of the road surface liquid spraying device of the present invention.

FIG. 6 is a diagram illustrating an example of a spraying state by the road surface liquid spraying device of the present invention.

FIG. 7 is a diagram illustrating an example of a case where two spray nozzle arrays are used.

FIG. 8 is a diagram showing an example of a case where three spray nozzle rows are moved integrally.

FIG. 9 is a diagram showing another example when two spray nozzle rows are used.

FIG. 10 is a diagram illustrating an example of a spraying state by the road surface liquid spraying device of the present invention.

[Explanation of symbols]

 Reference Signs List 1 liquid spraying device for road surface 2 work vehicle 3 spray nozzle 4 spray bar 5 spray pattern 6 drive mechanism 7 road surface 8 movement trajectory 9 rotating disk 10 rotation axis α spray angle β mounting angle N spray position P spray amount r radius of circular motion w Spray nozzle installation interval H Distance from spray nozzle to road surface

Claims (13)

[Claims] At least one spray nozzle row composed of a plurality of spray nozzles arranged in a straight line, and the spray nozzle row is defined by a plane in which the movement trajectory of each spray nozzle is parallel to the row direction of the spray nozzle row. A liquid spraying device for a road surface, comprising: a mechanism for moving the liquid in such a manner as to draw a periodic figure. 2. The road surface liquid spraying apparatus according to claim 1, wherein the plane parallel to the row direction of the spray nozzle row is a horizontal plane. 3. The road surface liquid spraying apparatus according to claim 1, wherein a plane parallel to the row direction of the spray nozzle row is a vertical plane. 4. The road surface liquid spraying device according to claim 1, wherein the periodic figure drawn by the movement locus of the spray nozzle is a circle, an ellipse, an ellipse, or a polygon. 5. The road surface liquid spraying device according to claim 1, wherein the speed and / or amplitude of the movement of the spray nozzle array is adjustable. 6. An array of two or more spray nozzles,
6. A road surface liquid spraying apparatus according to claim 1, further comprising a mechanism for moving at least two spray nozzle rows with a phase difference of (360 / number of spray nozzle rows) mutually. 7. A spray nozzle having a flat spray pattern, wherein a flat surface of the flat spray pattern sprayed from the spray nozzle has an angle of 0 to 90 degrees with respect to the row direction of the spray nozzle row. Claims 1, 2, 3, 4, which are arranged to have an angle β.
7. The road surface liquid spraying device according to 5 or 6. 8. The road surface liquid spraying apparatus according to claim 7, wherein the angle β of each spray nozzle is the same in at least one spray nozzle row. 9. The road surface liquid spraying apparatus according to claim 1, wherein a plurality of spray nozzles constituting the spray nozzle row are attached to the spray bar. 10. The road surface liquid spraying apparatus according to claim 1, which is attached to a work vehicle. 11. The method of claim 1, 2, 3, 4, 5, 6, 7,
A work vehicle provided with the road surface liquid spraying device according to any one of claims 8 and 9. 12. The apparatus according to claim 1, further comprising an aggregate dispersing device.
The work vehicle according to 1. 13. The work vehicle according to claim 11, which is a work vehicle for a spray-type surface treatment method.